• Analog Music Zone Schematics
• Andrea's projects
• Audio circuit at Digital Music Zone
• DIY Audio pages
• DIY
• Pojačala snage
• Hiraga Le Classe A 20W
• Lidström ZEN A FET
• Low Power Audio Amplifier - based on LM386
• Current Amplifier Outputs10W - 75W
• Class A 10W Linsley Hood
• Amp Design and Testingamplifier
• The Pass Zen Amplifier10 Watts Single-Stage Single-Ended Class A
• 100W RMS Amplifier dostupan i na compressed tar format
• 50 Watt Amplifier - 50 watt amp
• 90W Audio Power Amplifier - power-output stage
• GM75 Audio Power Amplifier - 75W to 8 ohm MOSFET amplifier
• Hafler Amplifiers - Amplifiers and preamp
• Current Amplifier Outputs - 10W design up to 75W
• Pass Laboratories DIY Projects - amplifier projects
• SDS Labs Schematics - class A amplifiers
• Stereo Cassette Player - 150W audio amplifier circuit,
• Symmetrical Output Amplifier - FET amplifier with power rating of 200 Watts 8 Ohms and 400 Watts RMS 4 Ohms
• The Leach Amp - 120W power amplifier, latest update "Low TIM Amplifier",
• The Leach SuperAmp - 270 watt Amplifier
• Zen Amp and Preamp
• Professional Sound Systems circuit diagrams PA amplifiers technical pages , 2x80W - 2x400W
• QSC Audio has Service manuals and circuit diagrams
• 5 Channel Current FB Car Amps - 200W current feedback amplifier design
• 20 Watt Power Amplifier
• Loudspeaker Protection circuit - DC protection circuit
• An Acoustic Simulator for Headphone Amplifiers - RC filter that creates a more realistic sound image in headphones by electronically mimicking spatial hearing with "shaded" interchannel crossfeed
• Designing an Opamp Headphone Amplifier - many circuit examples
• Headphone Amp Construction Kit
• SDS Labs Headphone Amp - solid state amplifier
• Stereo Headphone Box - takes input from one audio power amplifier and drives many headphones vith adjustable audio level, available as a kit from Sescom
• Top-Level OTL Tube Headphone Amplifier
• ALL-FET MC phono preamp - phono preamp with 54 and 64 dB gain and RIAA accuracy is better than 0.2dB
• A low distortion audio preamplifier
• Audio Preamp - simple preamp for electric guitar or microphone
• Fender Pre_amp with Horizonal Tube Mounting
• Hiraga MC -Moving Coil förstärkare
• Kaneda Linjeförsteg - includes phono and line inputs
• Mic-Pre Pan Pot Circuit
• Simple Guitar Preamplifier
• Power Amplifier Design Guidelines
• Cool Audio - application notes on PWM amplifiers
• LM12CL - IC for making good quality 80W audio amplifier, used in high quality active loudspakers
• 25L6 Amp - without a power transformer
• Ampage - tube amps and music electronics
• Build a tube amplifier
• Dynaco Mark 3
• Dynaco stereo 70
• Homebrew Tube Amp Corner - FAQs and circuits
• KAA 1 Tube Power Amplifier
• Klassiskt 300B slutsteg
• Klaus Schiffer's audio web site - tube amplifiers and tube information
• KTA/KSA High End Tube Audio - many tybe amplifier projects
• Les projets en cours - tube amplifiers
• Musical Instrument Tube Amp Building, Maintaining and Modifying FAQ
• Pure A class - 15W pure A class and push-pull
• SDS Labs Schematics - solid state class A amplifiers, headphone amplifier, vacuum tube amps
• Sheldon's Audio Designs - audio DACs and tube amplifiers
• Soft start for power tubes
• Tube Guitar Amp
• Tube Microphone Preamplifiers V72 (Telefunken/Siemens/Maihak/TAB) - information about the amplifier and the schematic
• Vacuum Tube Amplifier Construction Articles at the engineering musician webmagazine - articles targeted at preamplifier design and construction
• Vintage Quad equipment circuit diagrams
• Quad 22
• Zero Feedback Stereo Pre-Amplifier with Balanced & Unbalanced Inputs and Outputs
• Audio mixer for Ramsey FM10 transmitter: schematic and description , schematic also in Postscript format
• Dual Booster - two op-amp drives switchable to one output
• Simple 4-input mixer
• Simple audio mixer for two signal sources
• Simple audio mixer design ideas
• Transistorized Audio Mixer
• Audio Transformers - notes on using audio transformers for balanced signal interfacing
• Additional RFI Protection for Line Input Circuits - 8KB PDF
• Instrumentation or true balanced input differential amplifier
• Jensen Transformers Application Notes and Schematics - many circuit examples with transformers
• Making Differential Probes - for sensing audio signal voltages across devices which are not ground referenced
• Simple differential amplifier - opamp balanced input circuit with unity gain and common mode rejection adjust
• Non-inverting amplifier - opamp circuit which provides 15 dB gain and option for balanced output
• Simple 0 to 24 dB Gain Amplifier and Balanced Line Driver - 18KB PDF
• Balanced Line Technology - information and example circuits for both input and output
• Quad Buffer - gives 4 outputs from one input, every output separately buffered, option for output transformer isolation, can also be used as headphone amplifier
• Zero Feedback Stereo Pre-Amplifier with Balanced & Unbalanced Inputs and Outputs - tube circuit
• Long Lines Driver - high current output configuration is ideal for use as a transformerless long lines driver

• 10 to one voltage divider for direct input - very simple DI-box idea for your guitar amp output
• Black Box Circuit - a 40dB pad/100:1 attenuator for running spaker output to DI-box, so if you put 100 Watts in you'll get around 275 mVolts out
• Jensen Direct Box Transformer - data sheets have example circuit diagrams
• PO-26 Passive Direct Box - circuit diagram of Sescom PO-26 kit
• PO-25 Kit 1 x 3 Mic Splitter - circuit diagram of Sescom PO-25 kit

• Audio preamplifier circuits - three transistor microphone preamplifiers
• A Vacuum Tube Microphone Preamp / Direct Box Project phantom power supply
• Balanced mic/line amp with TUBES - 12AU7 tubes class-A cathode-driven stage, class-AB1 cathode follower output stage, 6db gain
• Balanced Mic Preamp - SSM2017
• Condenser microphone hookup
• Dual Phantom Power Microphone Preamplifier - information and full schematic of a kit available from PAiA Electronics circuit diagram
• Jensen Twin-Servo topology
• Jensen Transformers Application Notes and Schematics
• JT-13K6-C in Simple One IC Stage Mic Preamp
• Kondensaattorimikrofonin esivahvistin - simple preamplifier for electret microphone
• Mic-Pre Pan Pot Circuit
• Microphone and general purpose preamplifier - amplification of up to 1000 times
• Modern Microphone Preamplifiers - A paper originally published in R-E-P Magazine, cintains general information but does not contain circuit diagrams
• Mu Stage Tube Mic Pre - microphone preamp based on a Jensen transformer and an Alan Kimmel designed "Mu-mode" gain stage
• PAiA Tube Mic Preamp
• Simple microphone preamplifier - simple one transistor circuit
• Standard Microphone Preamplifier Input Circuitry - pdf file
• Taos Amp Solid State Mic Preamp - simple transformerless microphone preamp, includes circuit board design

• Binaural Microphone System
• Binaural microphones
• Electret MIC Apps - electret MIC
• Electret microphone connection - how to connect electret microphone
• Electret microphone powering circuits
• Homemade Binaural Mics
• Interfacing Microphones to Computer Sound Cards
• Making a rugged, connectorized microphone from a Panasonic microphone capsule
• PZM Modifications - phantom powering electret microphone capsule
• Schematics of old tube mics
• Taos Amp Stereo Bar - how to build special microphone holder for two microphones for near coincident stereo techniques
• Phono Preamp - tube design
• Phono premaplifier - RIAA two-pole filter curve and its implementation using operational amplifier
• Digital Volume Control
• Digital stero potentiometer - in pdf format, text in Finnish
• VOLC - this tar file consists of the schematic for a digital audio control
• Voltage controlled amplifier - three different circuits
• Voltage Controlled Audio Panner - variable gain amplifier circuit
• Voltage-controlled stereo signal attenuator
• 10 band audio equalizer - ascii drawing of simple circuit
• Five Band Mono Graphic Equaliser - basic mono unit originally designed for improving the apparent sound quality when dubbing video
• High-Q, 60-Hertz Notch Filter - very high-Q and narrow notchband
• A Basic Introduction to Filters - application note on active, passive and switched capacitor filters, document in PDF format
• Active Filters - Butterworth, Bessel and Linkwitz filter example circuits and equations
• Audio Graphic Equaliser - simple 7 band equalizer
• Basic gyrator design - basic building block of graphic EQ
• Designing A Pocket Equalizer For Headphone Listening
• Filters - page for filter design information
• Have Ya Ever Been Too High?? - filter that is intended to take the harshness off some sources of sound that have an upward response tilt
• High-Q 60-Hertz Notch Filter - pdf file
• LMC835 - Digital Controlled Graphic Equalizer IC, take also look at application note
• Tone controls with 2x NE 5532 - check also PCB design and notes
• 24db/octave Linkwitz-Riley
• 3-way 4th Order Active Crossovers for Car Audio
• Schematics Of Various Tubed Crossovers
• Subwoofer filter - 12 dB/octave low pass filter for subwoofer, includes subsonic filter
• Audio level control device - compressor circuit based on LED and photodiode
• Compressor using photoresistor - very basic circuit based on LED, LDR and OPAMP
• Dynacomp compressor
• Dynamic Range Processor - this stereo unit allows the dynamic range of a signal to be increased (expansion) or decreased (compression) by a variable amount up to 3:1, based on the SSM2120 dynamic range processor IC
• Q&D Compressor - A complete guitar compressor/limiter design based on SSM2165, check also http://www.muzique.com/amz/ for information where to get the components
• Q&D Compressor 2 - based on SSM2166
• Stereo Broadcast Limiter Circuit for the Ramsey FM10a/FM25 transmitter - also available in Postscript format
• Analog Music Zone - guitar effects, compressors
• Digital Echo Unit - mono unit for producing special effects for amateur dramatics
• Guitar Effects Boxes - guitar effect schematics and articles
• Guitar-related Circuits - effect circuit collection
• Harmony Central - contains effect information, schematics and construction tips
• LXH2 Web Page - guitar amplifier and cabinet simulator circuits
• Phase Shifter - The classic, swishy sound of the 70s and 80s is coming back, provides a 0 to 180 degrees of phase shift, with a variable sweep control, for keyboards and guitar
• PracticeMan(TM) - battery powered small guitar amplifier with distortion and tone controlls
• The Guitar Effects Oriented Web Page - FAQs and circuit diagrams
• The LXH2 Web Page - guitar box simulator information
• How to filter out voice in music - very simple method
• Burwen audio processor documentation - dynamic noise filter and eliminator circuit diagrams
• Digital Potentiometers Overview - information about digitally-controlled solid-state electronic potentiometers from Dallas Semicondictor
• Mixed feedback drive circuits for audio output transformers - technical paper from Lundahl Transformers in pdf format
• Noise generator - generates white and pink noise, from Synth Fool
• Square wave to sine wave converter circuit
• SSM ICs datasheets - voltage controlled amplifers etc.
• True bypass DPDT switching - produce true bypass when effect is switched off
• Surround Sound Decoder - designed to extract the rear channel from Dolby-encoded film soundtracks
• S/PDIF
• CD-ROM to MD - get toslink signal from your CD-ROM drive
• Cheap TOSLINK Transmitter
• Coax Digital Out to MD - Convert the coax signals to TTL signals for Toslink module
• Optical output for Creative Infra CD-ROM - little circuit to connect your MD or DAT to your CD-ROM drive with standard optical S/PDIF cable, based on TOTX173
• SPDIF Circuits - input and output interfacing circuits
• S/P-DIF I/O Using the Epoch SoundPro HT-1869V+ Card - circuits for S/PDIF to TTL interface and TTL to S/PDIF coax
• SCMS
• A SCMS killer circuit - should work with all DAT decks that have a Sony CXD2601 signal processor, ftp://ftp.cs.ruu.nl/pub/MIDI/DOC/pbscms.html
• Copybit deleter - sets the copybit in digital audio signals to enable copying of digital recordings
• DAC
• Audio Crafters Guild Articles & Essays - DAC building articles
• DAC v1.1 - high-performance DAC using the Crystal Semiconductor 8412 receiver, 8x oversampling, Burr-Brown PCM1702 D/A chips and the POOGE-5 output stage
• Jitter-Free DAC
• JT-DAC No. 3
• SDS Labs DAC Page
• Equipment modifications
• CDplayer's Project - information to make and upgrade a CDPlayer at home
• Misc
• CrystalClear AC'97 AMR Audio Modem Riser card reference design
• Electronic bell - Plays 2 mono 8bit wav files, stored in EPROM
• Sample Rate Converter Project - inputs an s/pdif (or AES/EBU) signal between 25 and 50kHz, and outputs an s/pdif signal at 44.1kHz
• Measuring
• AF generator - 60 Hz to 20 kHz sine wave
• Audio LED VU meter - built around discrete components
• A-weighting filter
• Building the L-R Test Set - helps you to set up left/right channel balance on audio broadcasting ystems
• LM3915 Dot/Bar Display Driver - suitable for VU meters etc.
• LM3916N bar graph driver - datasheet in pdf format, drives a 10 LED bar graph with VU proportions (3dB/step)
• Peak Power Indicator - a very simple circuit for an LED indicator that blinks when the delivered power to the amp exceeds a preset amount
• Peak Reading Level Meter Using Indicator Tubes
• Sound Level Meter - one chip replacement for the standard analog meters, based on LM3915 audio level IC
• VU Meter - 5 led VU meter, in pdf format, includes circuit board, text in Finnish
• VU Meter Amplifier
• VU Stereo Meter - will indicate the volume level of the audio going to your speakers by lighting up LEDs, based on LM3915 IC
• Burwen TNE7000 Transient Noise Eliminator - Schematics and Lineup Instructions
• Burwen DNF1201A Dynamic Noise Filter - Schematics and Lineup Instructions

• Design
• Ask the Applications Engineer - a collection of articles from its "Analog Dialog" newsletter in pdf format from Analogue Devices , useful info for people designing aDC and DAC systems
• Analog record and playback IC's
• Class A Amplifier Design
• Datasheets for audio related components Denon, Sony, Teac and Yamaha
• Determining Output Transformer Impedance
• Digital Volume Control - DS1669 Digital Pot IC
• Dual +/- 15 volt power supply - suitabe for powering many opamp circuits
• Guitar Effects FAQ
• Jensen Transformers Application Notes and Schematics
• Known WWW Tube and Audio Internet Sites - second page
• Main principles of amplifier wiring - how to wire operational amplifier circuits
• Mosfet Power Amplifiers - A discussion of the benefits of the lateral Mosfet output devices used in todays High Power audio amplifiers
• Proper Grounding Inside Equipment Avoids Ground Noise Coupling (aka"Pin 1 Problems") - 15KB PDF
• Sheldon's Audio Designs - audio DACs and tube amplifiers

• Digital audio

• Audio receivers tune in to binary broadcasts - Digital audio is more than the music played on PCs, PDAs, or solid-state Walkmans strapped to joggers' hips. Sonic-supplied Internet appliances can transport the tunes to every room in the house.
• Basics of Digital Recording - digtal audio introduction
• Consequences of Nyquist Theorem for Acoustic Signals Stored in Digital Format - published in proceedings from Acoustic Week in Canada 1991 - CAA Conference, Edmonton, Alberta, Canada, October 7 - 10, 1991, from Digital Recordings
• Digital audio gets an audition part one: lossless compression - Theory's fine, but reality's better. In this two-part series a PC, stopwatch, oscilloscope, and spectrum analyzer are used to get answer your audio-compression questions.
• Digital audio gets an audition. Part two: lossy compression - Lossless compression can shrink file sizes down a fair amount, but for serious weight loss, you need to permanently discard some of the data. Find out how the lossy codecs work and whether you can hear the differences between them.
• Digital audio lectures
• Digital audio routing and distribution
• Digital Audio: Theory and Reality
• FAQs (Frequently asked questions with answers) on Digital Signal Processing
• Introduction to Digital Recording Techniques - paper was published in Canadian Acoustical Association Journal, 1989, from Digital Recordings
• Level Practices in Digital Audio
• More Bits---Please! - how to pick right digital audio workstation (DAW)
• Principles of digital audio
• Security scheme doesn't hold water(marking) - Audio watermarking inserts media identification data within the bit stream, using techniques that its advocates claim are inaudible, but they might not be that reliable and unaudible as claimed
• Signal Processing information page
• S/PDIF IEC958 (named IEC60958 at 1998)
• The Video Engineer's Guide to Digital Audio - full book on-line
• White Paper: Digital Audio Distribution Systems - paper examines the suitability of several computer networking technologies to the task of carrying real-time digital audio
• Digital to analogue conversion technology
• 1-bit converters
• A Suggested Explanation For (Some Of The) Audible Differences Between High Sample Rate and Conventional Sample Rate Audio Material - AES paper in pdf format
• Effects in High Sample Rate Audio Material - document in pdf format
• On Jitter, the S/PDIF Standard, and Audio DACs - a discussion of how the implementation of the S/PDIF standard used in consumer digital audio can effect the fidelity of the recovered analog signal
• Bit Wars Listening Tests - Can You Hear the Difference between 16- and 24-bit recording ?
• Everything you always wanted to know about jitter
• Resolution, Bits, SNR and Linearity - document in pdf format
• Timing Errors and Jitter - document in pdf format
• Understanding the origin and function of audio A/D converters
• Why Jitter matters in high resolution digital audio systems - white paper from Axon in pdf format
• Digital audio formats
• Format comparisions
• A Comparison Between Audio Formats - DAT, LD, AC-3, radio, TV, LP, phone
• CD
• CD player features - a summary of experiences and opinions concerning CD specs and the utility of specific player features
• CD-player mods - CD player modification ideas for propable better sound quality
• CDplayer's Project - information to make and upgrade a CDPlayer at home
• CD Subcode Formats
• Compact Disc - how it works by Philips
• Compact Disc Formats - explanation of different types of CD disks
• Compact Disc: The Inside Story - articles on the technical details of the Compact Disc audio recording system originally published as a series in the magazine MAC Audio News
• Differences between CD-R/CD-RW discs and standard CD
• Digital Domain - site is designed to help audio engineers and musicians make better Compact Discs and CD ROMs
• EE498 Project Reports - exploded CD player, 1-bit D/A, CD testing, karioke device
• Introduction to CD player - how CD player works
• Subcode on the CD - check also Q-Subcode Decoding and Display project
• The Compact Disc - good introduction to CD technology by Philips
• The Compact Disk - how does it work
• Transferring LPs to CDR: Some Advice
• HDCD
• HDCD encode/decodeprocess HDCD Home Page
• DVD audio
• Digital Versatile Disc (DVD) - new laserdisk standard for audio and video
• DCC
• Dying digital tape format from Philips.
• DCC FAQ
• DCC-L Mailing List Homepage - information about DCC, mailing list subscription information, and archives from the list, includes DCC FAQ
• Minidisc
• ATRAC: Adaptive Transform Acoustic Coding for MiniDisc - information on audio coding in use in MiniDisc system
• MiniDisc Community Pages - MiniDisc information pages which are mirrored all over the world, also mirrored in Finland
• MiniDisc DIGITAL Recording FAQ
• MiniDisc Manager - software allows computer control of Sony MiniDisc recorders that have a compatible slink control port
• The MiniDisc Appreciation page - information about mini disk and how to use it in different applications
• US MiniDisc page
• DAT
• DAT-heads - home page for the DAT-heads mailing list
• DAT Tapes page - DAT links
• DAT World
• How to maintain your DAT
• Live taping to DAT
• Sony TCD D-7 and TCD D-8 resource page
• Tascam decs FAQ
• Other digital audio formats
• PC-Based Multitrack Recording Frequently Asked Questions (FAQ)
• Unofficial Tascam DA-88 web page
• Digital audio broadcasting
• DMX, Digital Music Express - digital music channels from cable
• UK Digital Radio Forum
• Networked audio
• Networking for Audio
• Routing Audio Via Ethernet White Papers
• Papers and FAQs
• AAC audio analysis - AAC has substantially fewer artifacts and artifact magnitudes than its MP3 codec predecessor.
• Audio Compression - very good introduction to audio compression part of Simon Fraser University CMPT 365 Course notes
• Digital Audio - Material for the lectures
• Digital Audio Transmission - Why Jitter is Important
• Everythign you always wanted to know about jitter but were afraid to ask - jitter is often misunderstood among recording engineers and audiophiles
• The Secrets of Dither - or How to Keep Your Digital Audio Sounding Pure from First Recording to Final Master
• Speech and music coding
• Information on coding
• AC-3 specification - in pdf format
• Audio Compression Introduction
• Comp.speech Frequently Asked Questions web page
• GSM 06.10 digital speech compression
• Human auditory masking and perception based coding - introduction to this topic
• Philips MPEG audio compression technology - documents, technology, software, components, links
• Speech Coding - introduction to speech codecs
• Software
• Hyperreal Tool Shed - audio tool programs for computers
• Source code for audio codecs in C - ADPCM, G.72x, LPC, GSM, CELP
• Digital audio interfaces
• AES/EBU and S/PDIF
• AES-3 distribution: Coax or twisted pair?
• AES/EBU and S/PDIF digital audio interfaces - zipped ascii text file and GIF pictures
• Digital Format Converters MSB, Midiman & Fostex Review - converters for S/PDIF conversion between Toslink optical and coaxial electrical
• FAQ for AES/EBU and S/PDIF interfaces - posts from the USENET newsgroup rec.audio.pro collected to one zip file
• S/PDIF Interface - a description of data format used in CD player digital output and some exaple circuits
• SPDIF overview
• The Jitters and Its Cure
• Audio Distribution and Control using the IEEE 1394 Serial Bus - this paper describes a system for transmitting hundreds of channels of high quality digital audio, control & monitoring protocols, and digital video over an IEEE 1394 serial bus
• I2S enhanced - preliminary specification
• New Olympic Stadium Audio System Runs Via Ethernet
• SCSI Musical Data Interchange (SMDI)
• TDA1543 DUAL 16-BIT DAC Data Sheet - includes description of I2S interface
• The D7 7-pin connector
• The Kurzweil KDS 8+2 Channel Digital Audio Interface
• Computer audio
• Computer speech compression techniques - comp.speech.FAQ, speech data, software
• Digital audio experiments - pages devoted to DSP and digital audio
• PC soundcard hardware pages - information about PC soundcard hardware, software and many related topics
• File formats
• About Sound Formats - a brief description of the various sound formats
• Audio file formats FAQ
• Soundcards
• Interfacing Microphones to Computer Sound Cards
• Tomi Engdahl's PC soundcard pages
• MP3
• Philips MPEG audio compression technology - introductory documents to MPEG audio technology, software, components, links
• MPEG Audio FAQ
• The Internet-audio (r)evolution - MP3 has launched digital audio into the mainstream, revolutionizing the way people collect and play music
• Software
• RealAudio - real time audio on Internet
• Sound Processing Kit - object-oriented class library for audio signal processing implemented in C++

• Acoustic Suspension Design Requires Macromedia Shockwave
• Active Crossover Kit for DIY Speaker Builders
• Active Filter Design
• AES project
• A. Galavotti DHT DIY Homepage
• AktivFilter Design
• Alessandro Galavotti's DHT Home Page
• All you need to know about designing horns - Lowther Club Holland
• Angela Instruments - great DIY tube retailer with some good DIY tube projects
• Antique Sound/ASUSA
• A.O.S. Lautsprecherbausätze
• April Sounds - exotic tube output transformer retailer(Tango) & great DIY tube projects
• Argos Loudspeakers - DIY- Voight Pipe & Folded Pipe Speakers
• Arn Roatcap, Inc. - High-quality stepped attenuator controls
• Audax A652
• Audua Inc. - Alpha version of SpeakerWorkshop
• Audiotechnik zum Selbstbauen von THEL Audio Engineering
• Audio Corner
• Audio Bizzaro - D.I.Y. Forum, tubes etc.
• Audio DIY Home Page
• Audio Note Preamp Kit
• AudioNova - DIY Links
• Audio Illusions - DIY step by step construction of the famous ARIEL speaker
• Audiophile loudspeakers - A description of a speaker project
• Audio Software Archive
• Audio pages
• Audio pages
• Audio Projects
• Audiopur - very large and expensive spiral horn
• Audio & Technique - Kits
• Balanced Mic Preamp
• Basstuba M1 - MSW
• Bi-amp (Bi-amplification) - Not quite magic, but close
• Big Fun horn - Back Loaded Lowther Horn
• Big Matt's Audio-Home Theater, DIY Interconnects Note by Jon Risch
• Bob's Music/Vacuum Tube Audio Electronics Page - some interesting tube DIY stuff
• Bob's Darling Amp Page - Cool 3/4 watt amp, great for Headphone use
• Bona's HomePage - tube and D.I.Y. stuff
• Bottlehead - tubes & DIY
• Brian Steele's Subwoofer DIY Page
• Build your own Hi-Fi - by Jim Read
• Build your own loudspeakers
• Building my Fantasy Music Room and Sound System
• Bullock and White Software - Free Loudspeaker Design Software.
• CALSOD demo available for download, SD Sonic Design
• CARA - Computerberechnete Raumakustik
• Carl's Electronics - DIY audio
• Cathode regulation for EL84's / 6BQ5's
• Cathode regulation for EL34's / 6CA7's
• CHRIS AND SUE'S PAGE, a work in progress - DIY Audio
• Cuno's DIY Ariel Loudspeaker page
• Conus 1 - a folktechnology speakerproject by Ole Thofte
• Convert pentod to triod
• Cookie-can amp - cool 6BM8 triode amp
• Cool DIY HiFi page
• Cowan's DIY audio and speakerbuilding
• Crossover Calculator
• Customized Audio & Hifi - Modifiy Your System
• Dave Platt's Speaker Project
• Dave's Audio DIY page
• DC Servo for HiFi Amplifiers
• DECWARE - High Performance Audio
• DigiKey Electronics - Electronic parts
• Die Angebotsseite für HIFI von Meister Beugel
• DIY Audio
• D.I.Y. Audio Amplifier Pag
• D.I.Y. Audio Central
• D.I.Y. Audiopage - German
• D.I.Y. Audio From Around the World
• DIY Audio.com
• DIY Audio & Video
• DIY Loudspeaker Driver Selection Guide
• DIY Loudspeakers Home Page
• DIY Loudspeakers Org.
• DIY...Ljudsidan, site in swedish
• DIY Klipschorn Speakers - by Mark Winquist
• DIY Audio pages
• DIY projects by Craig Stark
• DIY speaker by Dick Olsher
• DIY speakers homepage
• DIY speaker project
• DIY speaker projects
• DIY speakers
• DIY speakers
• DIY Tractrix Horn - Alf Lepp
• Doc's DIY Loudspeaker Page Requires Macromedia Shockwave
• Dream Builders Mic DIYers
• Edison Original - Kits
• Ed's D.I.Y. Corner
• Egils lydside
• Electonics
• Electronic Repair Tips Home Page
• Electronic Tonalities (PARASEX, Afterglow/Paraglow kits)
• Electrostatic Loudspeaker Circuit - Information and DIY ESL
• Elektro Akustik - DIY tube kits and more
• ELECTRONICS MANUFACTURERS by Jughead's
• Elemental's Loudspeakers (Commercial & DIY)
• Elliott Sound Products - DIY and audio information - Australia
• Ein Hornprojekt nach Schmacks von Thomas Naumann
• Enclosure Dilemma- Ported vs. Sealed by Cameron T. Noakes
• Enjoy the Music's - 300B Comparison Review
• Enjoy The Music - Speaker Lust
• Eric Wallin's Audio Pages - MIC preamp etc.
• ESL Info Exchange - Electrostatic Speaker DIY & parts/kits sale
• E-Speakers.com - DIY speakers
• FILTER.EXE - Freeware
• Fostex Drivers
• Free Audio Software available for download, Steve Ekblad
• Free Capacitors from Cameras
• Frits J. Donker Duyvis's Home Built Loudspeaker , Manger-Schallwandler
• Front Left/Right/Center Speakers and Subwoofer for Less Than $1,000
• GlassWare - Tube audio design software
• GoldPoint - decently priced assembled stepped attenuators
• Hafler Amps
• Handemade Electronics - great, quick shipping audiophile parts retailer
• Handwound Transformers
• Hammers Home Page Dedicated to DIY Tractrix Horns, Tube Amps, Fieldcoil Loudspeakers
• Harris Techologies Inc. - Authors of BassBox Pro & X-over Pro
• Hawk Audio
• Headphone Amp
• HeadWize projects
• Hedlund Horn
• Hifi - A forum to discuss general DIY hifi projects
• HiFi Röhrenverstärker Homepage - Carsten´s Röhrenverstärker Homepage
• Hobbybox- Infos zur Lautsprechermeß-Software
• HomeGrown Audio Products
• Horn Folds Page
• Horn Loudspeaker DIY Page
• Horn Loudspeakers: DIY plans, pictures, notes. - Cornu
• Hornlautsprecher.de with lots of plans for Lowther and Fostex
• Horn Page of James Melhuish
• Horn Speaker Home Page
• How to Make Electrostatic Loudspeakers
• How to Repair a Woofer - DecWare
• Human Speakers & DIY Speaker Repair for EPI and Genesis Physics
• Hunecke Consult
• Ivex software - Free demo of their PCB and schematic software
• Jade Products DIY battery chargers for portable DAT that do a 100% charge
• James Melhuish - DIY Audio, single drive speakers
• Jens Moller's Online Bandpass Calculator & Speaker Wiring/Loading Examples
• Jens Moller's Online Cross-Over Network Air Core Inductor Calculator
• Jeroen Steenblik's "Huh?" page - DIY and CDR recording
• Johannes Chiu's DIY Homepage
• Jon T. Gale's Site
• Joy of Speaker Building by Mika & Max Tucker- DIY speaker project
• Juha Hartikainen's - Interactive Speaker Designer
• Juha Hartikaninen - Lets you search by driver name
• Julius Urban - devoted to vacuum tubes and related projects
• Jürgen Heinzerling
• Kennedy Tube Audio - Interesting tube projects
• Kbapps Online - Speaker Enclosure Calculators & DIY speaker information
• KB Acoustics - Demo of VisualEars, designed to model room effects
• Kongsberg Electronics Express - Excess parts list - good for DIY
• Lautsprecher, Elektronik, Car Hifi
• Lautsprecherbau-Seite
• Lautsprecherbau Strassacker - Lautsprecherselbstbau
• Lautsprecherkonstruktions-/messtools
• Lautsprecherversand.de
• Likewise's Page - DIY digital and Minidisc Mailorder
• Literatur zum Lautsprecherbau
• Ljudsidan - Urban Mathiasson's Swedish audio page
• Ljudia Sound Tech - DIY speakers
• Ljudia Sound Tech's Interactive speaker designer
• Looking Over My Shoulder by Lynn Olson
• Loudspeakers
• Loudspeaker Driver Selection Guide
• Loudspeaker Driver Selection Guide by Igor Korzinek
• LoudSpeaker LAB - a program for loudspeaker builders
• Loudspeaker Discussion Forum
• London Live DIY HiFi Circle
• Lowther-america - Official Lowther importer for the US
• Lowther Club Holland
• Lowther Club Western Europe
• Lowther history - Evolution of the Lowther drive units
• Lowther hobbyists & enthusiasts page by Marc S. Wauters
• Lowther page of Marc Wauters - Contains tips&tricks for Lowther enthusiasts
• Louis Lung's Audio Projects
• Lynn Olson's Ariel - a cool DIY speaker & 300B PP project
• Lynn Olson's the basics of speaker design
• Magnush Speaker Project
• Manfred Huber's amplifier page.
• Marks Speaker Designs
• Mark Sokos Home Page - DIY
• Measurement Unit Conversions
• Meniscus Audio - Driver parameters for Audax, Audio Concepts, Eton and Eclipse
• Michel Paquette's DIY Audio Page
• Micro-Cap - Free Spice simulation
• Modifications on budget Hi-Fi Equipment
• Ms-line speaker systems MIC DIY e-mail list
• Multi Media Speakers
• My experience rebuilding AC10 foam surrounds
• My audiophile loudspeaker design project by Arto Jaaskelainen
• MyHo-the horn speaker project
• My projects include two speakers, a DAC and (sort of) a sub-woofer
• Negative opinion regarding Lowther speakers
• Newfoam
• NHT1259 subwoofers
• Nicholson Audio Hompage
• North Creek Music - speakers and DIY speaker systems
• Norbert Bayer's DIY Audio Home Page - DIY high end (DACs, amplifiers, etc.)
• Nuance & Fluence - Adnan Arduman's personal DIY tube audio site
• Oliver Friedman's Audio & Video Pages - Many DIY projects
• Old Colony - DIY KITS
• Open Directory Project - DIY List
• Painting Speaker Cones - a Direct Heating Site
• Pat's Home Page: The Great Electrostatic Speaker/Amp Project
• Pat's Tube & Recording Schematics - 4000 AVAILABLE SCHEMATICS
• Perfectionist Audio - Transmission Line Plans 10 Hz Sub...
• Personal Panel Speakers by Steve Deckert
• Peter Dahl's music, lesure, audio, hifi, DIY pages
• Philmore & Datak - DIY Audio
• Phil's Audio - DIY & Kit Speakers Phil Abbate, a hobbiest and member of the Atlanta Audio Society
• Phil Mundi - Exponential Horns & DIY - Belgium
• Plasma Tweeter
• Project for a cylindrical bass absorber
• Parts Express
• Pass Labs' DIY page - interesting solid state amp/pre-amp projects
• Passive Xovers Tutorial
• Podium fuer Lautsprecherselbstbau
• Power Supply
• Quality Electronic Kits - Tube amplifier kits
• Rear Effect Speakers
• Resistor Color Codes - Calculator
• RJM Audio Cable - DIY Hi-End Cables
• Rob's High End Acoustics - A Barnyard of Bargain Tweaks
• Roscoe Primrose's Page
• Sakuma - three easy-to-build designs.
• SatCure Satellite TV Spares & Repairs (Plus Hobby Kits & Electronics)
• SCM Speaker Design
• Scott's 2-Way101 Page
• SD Sonic Design has a CALSOD demo
• SDS Labs - interesting DAC project(from Positive Feedback fame)
• Self Bias- DIY Ultra-Fi Audio
• SEKIDO Ryoichi's DIY Audio page
• Shavano Music-Speaker building tips
• Silicon Sam's Technology Resource - DIY
• Simetrix - Free Spice simulation
• SJS Electroacoustics - custom made transformers & great DIY tube projects
• Skin Effect - by Wim.
• Software for speaker-construction and more
• Surroun Sound the Passive Way
• Speaker Building Page
• Speaker Building Place - Driver specs.
• Speaker Building Place - Crossover formulae
• Speaker Building Place - If you get a DNS error, try again here (Nor.)
• Speaker City USA - DIY Kits, Home Theater Kits
• Speaker Design - Home for DIY Loudspeaker Discussion
• Speaker Driver Selection
• Speaker Vertrieb Walter Fröhlich - Podium für aktive HiFi-Freunde und Lautsprecherselbstbauer
• SpeakerPRO - Free demo available for download
• Speaker City USA - DIY and raw drivers
• Speaker Building Page Speakerland - DIY Speaker Kits
• Speaker-online.de
• http://f16.parsimony.net/forum27133/messages/69.htm Spiralhorn Thoughts... Read this! (Logarithmic Spiral)
• Stellans Schematic Arkiv - Guitar effects, how to build filter
• Steinmusic - German DIY Audio site
• Stepped audio attenuators, phono stages - Danish Audio ConnecT
• Steve Ekblad - Free Audio Software available for download.
• Steve's Speaker stuff - DIY speaker projects
• Subwoofer DIY Page V 1.1
• Subwoofer Made from Sonotube and the Hsu 12" Driver
• Svetlana technical Support - Tube information
• Tactile Transducers
• Technological Fossils
• Tube World, Inc. - good tube seller
• The Accessible 1.0
• The Audio Society of Minnesota for DIY stuff
• The Bona's HomePage - tube and D.I.Y. stuff
• The DIY Audio Corner
• The Thrifty Thumper - a great budget subwoofer
• The Electrostatic Loudspeaker Circuit
• The Fi Primer
• The Microphone Preamp Project by Jason M. Neal
• The Radial Loudspeaker by Steve Deckert
• The Speaker Building Page
• The speaker building page
• The Speaker Building Page
• The Subwoofer DIY Page
• The Thrifty Thumper (Subwoofer)
• The Triode Guild - triode tube talk
• The Tube CAD Journal.
• The Tubelar page by Auke Dost
• Terry Miles's Cool DIY HiFi page.
• Thesis Acoustique - speakers and DIY kits
• Tips & Tweaks on budget HIFI equipment
• Titan Powered Subwoofer
• Transmission Line Speaker Page
• Triode Electronics - great DIY tube retailer with some good tube schematic archive
• True Audio - loudspeaker simulation software
• Tube pre-amp
• Tweakers Asylum
• Tweaks - hi-fi.com tweaks
• Tweaks by Bruce Kinch
• Tube Group - DIY Tube Audio - France
• Ulrich Haumann's Vintage HiFi Pages - DIY projects, plasma speakers
• Useful Conversions & Formulas
• Vacuum Tube Audio - Positive Feedback and several projects.
• Vacuum State Electronics - DYI audio "cookbooks"
• VAF Research - DIY Kit Loudspeakers
• Valve - great DIY tube mag goes online
• Valves & Tubes - Russ Sadd site is worth a visit
• Valves' World
• VT52 - great tube DIY project & data resource
• Wayne's Speaker Building Page
• Welbourne Labs - good audiophile parts supplier
• Welbourne Labs Audio Kits (Tube and Solid State)
• Wester electric WE16A Horn
• William
• WinSpeakerz Speaker Design Software
• Woodworking Tools for the Do-it-Yourselfer
• www.speaker-online.de
• XexorZ's DIY Electronics Page
• Yuichi's Audio Lab-Hand Craft Speaker System
• Zone - Japanese magazine
• ZALYTRON INDUSTRIES CORP - DIY speakers

BLOK SHEME CIJEVNIH UREĐAJA

• Acrosound 100W ultralinear amp
• Acrosound 6L6 amp
• Acrosound KT88 self-bias amp
• Acrosound push-pull parallel amp
• Acrosound triode amp
• Acrosound Williamson amp
• Allen organ amp schematic
• Altec 1570B schematic
• Altec 260A schematic
• Altec A333A
• AC12 schematic
• B-12XT Portaflex schematic
• B-15N Portaflex schemat, ca. 1962 (5U4 rectifier)
• B-15N Portaflex schemat, ca. 1968 (5AR4)
• B-15ND Portaflex schemat, ca. 1967 (7027A)
• B-15NF Portaflex schematic
• B-18N Portaflex schematic
• B-25 schematic
• EJ-12-A Echo Jet schematic
• ET-1 Echo Twin schematic
• ET-2B Super Echo Twin schematic
• G-12 schematic
• Gemini II schematic
• Gemini VI schematic
• J-12-A Jet schematic (7591A version)
• J-12-B Jet schematic (6V6 version)
• J-12-D Jet schematic (7591A / 6BK11 version)
• M-12 schematic (6V6 version)
• M-12-A schematic (7189A version)
• M-15 schematic (6L6 version)
• R-12-A Reverbrocket schematic (7591A/5Y3 version)
• R-12-R Reverbrocket schematic (6V6/5Y3 version)
• R-12-RB Reverbrocket schematic (7591A version)
• R-15-R SuperReverb schematic
• Ampeg reverborocket 3 schematic
• ReverbRocket II schematic
• SB-12 Portaflex schematic
• SB-12 Portaflex schematic (7868 version)
• SVT power amp schematic (6146)
• SVT power amp schematic (6550)
• SVT preamp schematic
• V2 power amp schematic
• V2 preamp schematic
• V3 power amp schematic
• V3 preamp schematic
• V4 power amp schematic
• V4 preamp schematic
• V4B power amp schematic
• V4B preamp schematic
• V9 power amp schematic
• V9 preamp schematic
• VT-40 power amp schematic
• VT-40 preamp schematic
• DL7-35 schematic
• Bell 6060 schematic (1 of 2)
• Bell 6060 schematic (2 of 2)
• Berning EA230 schematic
• Bogen CHB35A schematic
• Bogen DB20DF schematic
• Bogen DO-30 schematic
• Brook 12A schematic
• Brook 22A schematic
• Conrad Johnson MV75 schematic
• Conrad Johnson PV2 schematic
• Conrad Johnson PV5 schematic
• Conrad Johnson PV6 schematic
• Danelectro Silvertone 1484 preamp
• Dukane 1A45A schematic
• Dukane 1A475 schematic
• Blues-112 Combo
• DDS-2250V Guitar amp
• Dynaco FM3 schematic p1
• Dynaco FM3 schematic p2
• Dynaco low power amp
• Dyanco Mark III schematic
• Dynaco Mk III
• Dynaco Mark II schematic
• Dynaco "Mullard" amp
• Dynaco PAM1 schematic
• Dynaco PAS2 schematic & manual
• Dynaco PAS-3X schematic
• Dynaco SCA-35 schematic
• Dyanco ST-70 schematic & manual
• Dynaco ST-70 schematic
• ST-70 circuit
• Dynaco modified Williamson
• Eico HF-12A schematic
• Eico HF-20
• Eico HF-22
• Eico HF-35
• Eico HF50/60 schematic
• Eico HF-81 schematic (1)
• Eico HF-81 schematic (2)
• Eico HF85 preamp
• Eico HF-86
• Eico HF-87
• Eico MX-99 multiplexer schematic
• Eico ST-70
• Electrovoice A-30 Circlotron schematic
• Emerson model 508 schematic
• Emerson model 560 schematic
• Epiphone EA-50
• Fender 75 schematic/manual
• Fender Bandmaster 5E7 schematic
• Fender Bandmaster 6G7 schematic
• Fender Bandmaster 6G7-A schematic
• Fender Bandmaster AB763 schematic
• Fender Bandmaster Reverb AA1069 schematic
• Fender Bassman 135 schematic
• Fender Bassman 5B6 schematic
• Fender Bassman 5E6-A schematic
• Fender Bassman 5F6 schematic
• Fender Bassman 5F6-A schematic
• Fender Bassman 6G6 schematic
• Fender Bassman 6G6-A schematic
• Fender Bassman 6G6-B schematic
• Fender Bassman AB371 schematic
• Fender Bassman AA864 schematic
• Fender Bassman AB165 schematic
• Fender Blackface Champ schematic
• Fender Blackface Power Amp (20W) schematic
• Fender Blackface Power Amp (50W)
• Fender Blackface Preamp schematic
• Fender Bronco AA764 schematic
• Fender Brownface Power Amp (50W) schematic
• Fender Brownface Preamp schematic
• Fender Champ 12 schematic
• Fender Champ 5C1 schematic
• Fender Champ 5E1 schematic
• Fender Champ 5F1 schematic
• Fender Champ AA764 schematic
• Fender Concert 6G12 schematic
• Fender Concert 6G12-A schematic
• Fender Deluxe 5C3 schematic
• Fender Deluxe 5D3 schematic
• Fender Deluxe 5E3 schematic
• Fender Deluxe 6G3 schematic
• Fender Deluxe AB763 schematic
• Fender Deluxe Reverb AA763 schematic
• Fender Dual Showman Reverb 100W schematic
• Fender Dual Showman Reverb 135W schematic
• Fender Harvard 5F10 schematic
• Fender Musicmaster Bass schematic
• Fender Princeton 5B2 schematic
• Fender Princeton 5C2 schematic
• Fender Princeton 5D2 schematic
• Fender Princeton 5E2 schematic
• Fender Princeton 5F2 schematic
• Fender Princeton 5F2-A schematic
• Fender Princeton 6G2 schematic
• Fender Princeton AA964 schematic
• Fender Princeton Reverb AA1164 schematic
• Fender Pro 5B5 schematic
• Fender Pro 5C5 schematic
• Fender Pro 5D5 schematic
• Fender Pro 5E5 schematic
• Fender Pro 5E5-A schematic
• Fender Pro 6G5 schematic
• Fender Pro 6G5-A schematic
• Fender Pro AA763 schematic
• Fender Pro AB763 schematic
• Fender Pro Reverb AA1069 schematic
• Fender Quad Reverb 100W MV schematic
• Fender Quad Reverb 135W UL schematic
• Fender Reverb Unit schematic
• Fender Reverb Unit 6G15 schematic
• Fender Reverb Unit SF schematic
• Fender Showman 6G14 schematic
• Fender Silverface Power Amp (50W) schematic
• Fender Super 5C4 schematic
• Fender Super 5D4 schematic
• Fender Super 5E4-A schematic
• Fender Super 5F4 schematic
• Fender Super 6G4 schematic
• Fender Super 6G4-A schematic
• Fender Super Reverb AA763 schematic
• Fender Super Reverb AA1069 schematic
• Fender Super Reverb AA270 schematic
• Fender Super Reverb AB568 schematic
• Fender Super Reverb AB763 schematic
• Fender Super Twin Reverb schematic
• Fender Tremolux 5E9-A schematic
• Fender Tremolux 6G9 schematic
• Fender Tremolux 6G9-A schematic
• Fender Tremolux AA763 schematic
• Fender Tweed Champ schematic
• Fender Tweed Deluxe schematic
• Fender Tweed Power Amp (100W) schematic
• Fender Tweed Power Amp (50W) schematic
• Fender Tweed Preamp schematic
• Fender Twin 5C8 schematic
• Fender Twin 5D8 schematic
• Fender Twin 5E8-A schematic
• Fender Twin 5F8 schematic
• Fender Twin 5F8-A schematic
• Fender Twin 6G8 schematic
• Fender Twin 6G8-A schematic
• Fender Twin Reverb AA270 schematic
• Fender Twin Reverb AA763 schematic
• Fender Twin Reverb AA769 schematic
• Fender Vibrasonic 5G13 schematic
• Fender Vibrasonic 6G13 schematic
• Fender Vibro Champ AA764 schematic
• Fender Vibrolux 5E11 schematic
• Fender Vibrolux 5F11 schematic
• Fender Vibrolux 6G11 schematic
• Fender Vibrolux 6G11-A schematic
• Fender Vibrolux Reverb AA270 schematic
• Fender Vibroverb 6G16 schematic
• Fender Vibroverb AA763 schematic
• Fender Vibroverb AB763 schematic
• Fisher 600 Receiver (1 of 4)
• Fisher 600 Receiver (2 of 4)
• Fisher 600 Receiver (3 of 4)
• Fisher 600 Receiver (4 of 4)
• Fisher Custom Electra E-46 (amp)
• Fisher Custom Electra E-46 (mpx)
• Fisher Custom Electra E-46 (tuner 1)
• Fisher Custom Electra E-46 (tuner 2)
• Fisher FM-100-B schematic (1 of 3)
• Fisher FM-100-B schematic (2 of 3)
• Fisher FM-100-B schematic (3 of 3)
• Fisher SA-100 schematic
• SA-16 schematic
• Fisher X-100 schematic (1)
• Fisher X-100 schematic (2)
• Fisher X-100 schematic (3)
• Fisher X-202-B schematic (1 of 3)
• Fisher X-202-B schematic (2 of 3)
• Fisher X-202-B schematic (3 of 3)
• 30W amplifier
• KT66 15W amplifier
• Genelex KT88 100W amp
• Genelex KT88 30W amp
• Genelex KT88 400W amp
• Genelex KT88 50W amp
• Gibson GA-15 schematic
• Gibson GA15-RVT schematic
• Gibson GA-20 schematic
• Gibson GA-25 schematic
• Gibson GA-30 schematic
• Gibson GA-40
• Gibson GA-5
• Gibson GA-77 schematic
• Gibson Gibsonette
• Gibson Les Paul Junior Amp
• Gotham Audio 150W record lathe amp
• Gotham Audio 150W record lathe PSU
• Grommes 211 preamp schematic
• Grommes 215-BA
• Grommes 216-BA schematic
• Grommes 230-BA schematic
• Grommes 260A schematic
• Grommes 260-A
• Grundig 7000 schematic
• Hallicrafters S53A schematic
• Harman Kardon A-500 schematic (1)
• Harman Kardon A-500 schematic (2)
• Harman Kardon Citation 1 line stage
• Harman Kardon Citation 1 phono stage
• Harman Kardon Citation 2
• Harman Kardon Citation 2
• Harman Kardon Citation 4 line stage
• Harman Kardon Citation 4 phono stage
• Harman Kardon Citation 5
• UA-1 schematic
• Heath W3-AM
• Heath W5M schematic
• Heath W-5M schematic
• Heath W-6A
• Heath W-7M schematic
• Heath WA-P2 schematic
• Hiwatt Preamp schematic
• An OTL amplifier
• Battery powered PA
• Electronic crossover
• One tube battery operated amp
• SRPP preamp schematic
• The Beast push-pull 3CX300A1 amp
• Jadis Preamp
• Kalamazoo Model 1 schematic
• Knight Linear Deluxe schematic
• Knight Stereo 40 schematic (1)
• Knight Stereo 40 schematic (2)
• Leak Point One preamp schematic
• Leak preamp version 1 schematic
• Leak preamp version 2 schematic
• Leak preamp version 3 schematic
• Leak preamp version 4 schematic
• Leak RC/PA/U preamp schematic
• Leak RC-PAU schematic
• Leak Stereo 20 schematic
• Leak Stereo 50 schematic
• Leak Stereo 60 schematic
• Leak TL/10 schematic
• Leak TL/12 schematic
• Leak TL/12 plus schematic
• Leak TL/25 plus schematic
• Leak TL/25A schematic
• Leak TL/50 plus schematic
• Leak Troughline 2 Stereo tuner schematic
• Leak Troughline 2 tuner schematic
• Leak Varislope 2 Stereo preamp schematic
• Leak Varislope II preamp schematic
• Leak Varislope Mono preamp schematic
• Leak Varislope Stereo preamp schematic
• Magnavox Model 278 bi-amp amp
• Marantz Consolette mono preamp
• Marantz model 5 schematic
• Marantz Model 5
• Marantz Model 8
• Marantz Model 9
• Marshall 100W Power Amp schematic
• Marshall 1986
• Marshall 1986 Bass Mk II
• Marshall 1987 (plexi)
• Marshall 50W Power Amp schematic
• Marshall JCM Preamp schematic
• Marshall JCM2000 Preamp Ch. A schematic
• Marshall JCM2000 Preamp Ch. B schematic
• Marshall Master Volume Preamp schematic
• Matchless DC30 schematic
• Matchless Spitfire schematic
• McIntosh MC-30 schematic
• MFA 120 amp schematic
• MFA 120 power supply
• Michaelson & Austin TVA-1 schematic
• Michaelson and Austin TVA-1
• Multivox Premier 50
• Music Man GP3A power amp
• Musicman 2100-130 chassis schematic
• Musicman 2100-150 chassis schematic
• Musicman 2100-65 chassis schematic
• Musicman 2100-75 chassis schematic
• Musicman 2100-B chassis schematic
• Musicman 2100-RD chassis schematic
• Musicman 2100-RP chassis schematic
• Musicman 2165-RD chassis schematic
• Musicman 2165-RP chassis schematic
• Musicman 2275-130 chassis schematic
• Musicman 2275-150 chassis schematic
• Musicman 2275-65 chassis schematic
• Musicman 2275-75 chassis schematic
• Musicman 2475-130 chassis schematic
• Musicman 2475-150 chassis schematic
• Musicman 2475-65 chassis schematic
• Musicman 2475-75 chassis schematic
• Muzak model 975 75W amp
• Nation Horizon 20 schematic
• Pederson W-50
• Philco 37-630 schematic
• Philco 50-1718 schematic
• Pilot AA-902
• Quad Model 2 amp schematic
• Quad Model 22 preamp schematic
• Preamp schematic
• Quad II circuit diagram
• Quad II schematic
• RCA 16X1,2,3 schematic
• RCA 19K schematic
• RCA 5T schematic
• RCA 66X11 series schematic
• RCA 811K schematic
• RCA 8BX6 schematic
• RCA 9K3 schematic
• RCA Limiting Amplifier schematic
• RCA MI-12246 schematic
• RCA MI-9377 schematic
• RCA OTL amp
• Rock-Ola model B schematic
• Scott 222 (1 of 2)
• Scott 222 (2 of 2)
• Scott 299-C (1 of 2)
• Scott 299-C (2 of 2)
• Scott 299-C (1 of 2)
• Scott 299-C (2 of 2)
• Scott 310-D tuner schematic (1 of 2)
• Scott 310-D tuner schematic (2 of 2)
• Scott 335 (1 of 2)
• Scott 335 (2 of 2)
• SDS Labs EL84 Amplifier
• Sherwood S-5000 schematic
• Sherwood S5000 II schematic
• Silvertone 1484 guitar amp schematic
• Simplex AM-1026 schematic
• Stromberg-Carlson AP-80
• Sunn Model 2000S
• Sunn Model 200S
• Sunn Model T
• Telefunken Gavotte 5353W (1 of 2)
• Telefunken Gavotte 5353W (2 of 2)
• 73 YGM3 4
• 66 YBA1 BassMaster
• 69 YBA 1A BassMaster Mk II
• 72 YBA1 BassMaster
• 72 YSR1 Custom Reverb
• 72 YBA3 Custom Special
• 66 YGM2 GuitarMate
• 72 YGL3 Mk III
• 76 YGL3 Mk III
• 67 YGA1 Signature
• 66 YVM1 VoiceMaster
• Traynor YGM-4 Studio Mate
• 75W AB2 amp (zip file)
• Regulated PSU
• Simple 10W amp
• VOX AC-100/2 Power Amp schematic
• Vox AC15 schematic
• VOX AC-30 Power Amp schematic
• Vox AC-50
• VOX AC-50/4 Power Amp schematic
• VOX Berkeley Power Amp schematic
• VOX Berkeley Preamp schematic
• Vox Pacemaker schematic
• VOX Top Boost Preamp schematic
• WE 142A schematic
• Western Electric Model 86A schematic
• Wurlitzer Model 680 schematic
• Zenith 12-H090 schematic
• Zenith chassis 5621 schematic
• Zenith chassis 5638 schematic
• Zenith chassis 6B02 schematic

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