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2026-10-09
- 170 new manuals added in aes, alinco, bitsavers, b&k, century, collins, dovetron, ebooks, eico, electric-eye, freq-electronics, goodwill, hickok, johnson, kantronics, micronta, military, national, rca, scientific_radio, sencore, sylvania, tennelec, triplett, uniden, and xyz.
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2026-10-21
- New beta site for public review.
Circuits
Directories
Amplifiers - Integrated
Audio-Visual
Automotive
Compressors, Limiters, Loudness & Gain Control
Compressors, Limiters, Volume & Gain Control
Connectors and Connecting Audio
Construction, Wiring & Mechanical
Digital Audio
Distribution
Equalizers, Filters & Tone Controls
Equalizers, Filters, Loudness & Tone Controls
FM & High Fidelity Radio
Intercoms
Meters, Metering & Indicators
Misc
Multichannel Sound-Home Theatre
Musician
Noise Reduction
Noise Reduction & Signal Restoration
PA Amplifiers
PA Systems & Amplifiers
Power Amplifiers
Power Supplies - Audio, Amplifiers. etc
PreAmps
Professional Audio
Speakers & Headphones
Switching Audio
Switching of Audio
Test & Measurement - Audio
Theory
Vintage Audio
_About MHTML and XPS Files
MHTML File format is where all the files from a web site are in one file XPS File format is Microsofts version of Acrobat or PDF The reader for these is Microsoft Internet Explorer
_ABOUT THIS SECTION
This section is about audio circuits.
Files
- 10-Band Graphic Equaliser.pdf
- 100 Amplifiers Part 1.pdf
- 100 amplifiers part 2.pdf
- 1W Power Amplifier with Push Button Volume Up-Down - Part available through Octopart as of date file saved.pdf
- 25W-500W Scalable Class D Amplifier IRAUDAMP7D.pdf
- 315W-Ch Class D Amp using TPS3255 Evaluation Module with schematics.pdf
- 35V Isolated Car Amp power supply.jpg
- 400W 4 Ohm Power Amp Module.png
- All About Microphones.pdf
- Audio Amplifier Overload Protection and Transient Elimination.pdf
- Audio Delay Line Systems and Circuits Part 4 EAB 1997-04.pdf
- Audio Effects Circuits - Assorted.pdf
- Audio Lead Connections.jpg
- Audio Phase Inverters, Phase Splitters and Drivers.mht
- Audio Power Amplifier Design Handbook 3rd Edition.pdf
- Audio Signal Amplifier Assortment for Home Audio and Microphones.pdf
- AVA Hifi UltraValve.mht
- Baxandall 5W Amplifier.pdf
- BBD Sound Effects Unit Theory KK 1990-.3.pdf
- Brown Audio Power Amplifier,120W,6550.jpg
- Build a Microphone Polarity Tester.mht
- CD Adaptor.pdf
- Choosing and Using Vacuum Tubes.pdf
- Class D Audio Amplifier Basics AN-1071.pdf
- Class D Audio Amplifier Design.pdf
- Class D Audio Amplifier Performance Relationship to MOSFET Parameters AN-1070.pdf
- Class D Driver ICs - IRS2011 and IR2011 Comparison AN-1097.pdf
- Class D Driver ICs IRS20954S and IRS20955S Comparison AN-1129.pdf
- Class D Driver IRS2092(S) Functional Description AN-1138.pdf
- Class D Driver IRS20955S and IRS20957S Comparison AN-1141.pdf
- Class D OEM product FAQ.mht
- Class D Power Amplifier Using TL494 as Mosulatortl494final1wf.jpg
- Class D Power Calculator.xls
- Class-A Headphone Amplifier with Tone Controls.jpg
- Class-D Amplifier External Load Diagnostics.pdf
- Class-D Amplifiers with TL494 Modulator.pdf
- Class-D Filter Design.pdf
- Class-D LC Filter Designer.xlsx
- Constant-Voltage Audio Distribution Systems.pdf
- Design of a Korg Nutube Amplifier.pdf
- Designing and Building Audio Amplifiers with Tubes.mht
- Digital Stereo Sound Recorder.pdf
- Do It Yourself Car Amplifier.xps
- Dynamics Processor Tips.pdf
- Effect of Load Impedacne on Magnetic Pickup Response.pdf
- Electronic organ tone system 1978.pdf
- Gain Control Devices, Detectors, Side Chains & Audio make-up Amplifiers.pdf
- Handbook of Sound Reproduction Part 10 Loudspeakers Part 1 Audio 1953-03.pdf
- Hypex SMPS180 Power Supply Connection.pdf
- Keyboard Tracking for the ETI Sequencer.jpg
- LM3886 ApplicationNote BPA-200 for more power.pdf
- Low Noise Amplifiers with Op-Amps and discrete FETs.pdf
- Low Power Audio Amplifier Circuits.pdf
- Low-Noise Microphone Amplifier.jpg
- Masher - son of The Amazing Audio Elixir.pdf
- Measuring Sound Pressure Level with APx.pdf
- Neve 1063 500 Module Schematic.jpg
- Neve 1073 500 Module Schematic.jpg
- Optonics RP-7100 Turntable with Partial Schematic.pdf
- Pa Amp 15w Rms.pdf
- Playmaster AM-FM Stereo Tuner Part 2 EA 1986-01.pdf
- Police Car Siren Sound Effect.jpg
- Power Amplifier Protection Using Automotive Lamps.pdf
- Recording Tape and Tape Recording.pdf
- Reducing Amplifier Distortion - Sandman.pdf
- Selection of Tone-Control Parameters.pdf
- Tape Recorder Controller.jpg
- The Art of Dynamics - From a Purr to a Roar = The Classics.pdf
- The Leapfrog Method of Switching Amplifier Control Loop Design.pdf
- ±35V Car Amp Isolated Power Supply.jpg
- ±70V 900W Car Amp Power Supply.png
Contact and submissions
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Viewers
These viewers may be required to read some manuals in the archive:
- Sumatra PDF (Windows)
- DjView (DjVu)
- WinDjView (Windows, DjVu)
- Adobe Acrobat Reader (PDF)