![]() ![]() ![]() 1999 PCB 20 Simplest Ever Bridge Adapter Use this simple method, and avoid external circuits 1999Ģ1 Stereo Width Controllers Two to choose from. Ideal for use with the AC Millivoltmeter above 1999ġ8 Simple Surround Sound Decoder A line-level version of the "Hafler matrix" decoder 1999 19 Single Chip 50W Power Amplifier Using the National Semiconductor LM3876/ LM3886 Power IC. This is the optimum choice for any active system - Rev-B boards 1999 PCB 9aĪ Reader's Xover This is well worth reading if you can't decide on biamping 1999Ģ0 Watt Class-A Power amp True Class-A power amp for low power systems or tri-amping 1999ġ1 Pink Noise Generator For loudspeaker and room acoustics testing 1999ġ2 Current Feedback Amp An updated version of a very old 60W / 8 Ohm design 1999ġ2a El-Cheapo This is the real El-Cheapo, presented in more or less original form 1999ġ3 Low Noise Preamplifier Simple unbalanced design, suitable for microphones - very low noise 1999ġ4 Power Amp Bridge Adapter A conventional adapter for bridging power amplifiers 1999 PCB 15 Capacitance Multiplier Supply Extremely low ripple supply with less power dissipation than a regulator 1999ġ6 Audio Millivoltmeter For Testing Amplifiers (etc) - An analogue design, 3mV to 30V with dB scale (superseded by Project 236) 1999ġ7 A-Weighting filter For noise measurements. Intended as an experimental device - works extremely well 1999Ģ-Way Electronic Crossover Conventional 3rd order electronic crossover 1999 09Ģ4dB/Octave 2/3-Way Xover Linkwitz-Riley alignment. 1999 PCB 07ĭiscrete Op-Amp Class-A Output. Phono (RIAA) Preamp Very high quality moving magnet phono preamp - few circuits will better this one. This is a new PCB that replaces the original P05 board, because some builders just want a simple PSU. Preamplifier Power Supply Flexible, low-cost PSU for preamps or general test work. Preamplifier Power Supply All the features of the original P05 boards plus an improved muting circuit. See Project 3A 1999 PCB 04ĭual Power Supply A power supply that is adaptable for most power amps 1999 Has all the facilities normally expected 1999Ħ0W / 8 Ohm Power Amplifier (Updated) My old faithful power amp design. Simple High Quality Hi-Fi Preamp As it says - simple, high quality preamp. ![]() Project Description Date PCB 01 A Better Volume Control A volume control using a linear pot that is much better than most log pots 1999 PCBs for these won't be available if there's not enough interest. There are currently two projects that will/ might get PCBs (shown as Pending). Most are in chronological order, but there are a few exceptions. Many of the projects are 'timeless', and a very early publication date doesn't mean the project is obsolete. Because there are so many projects, it's proved difficult to ensure that the last update is shown. Where possible, the date of initial publication and the update are both shown. The Date column usually indicates the date of initial publication, and there have been updates to many of the projects that are not reflected by the date shown. preamps, crossovers and other opamp circuits introduction, general principles and power amps Troubleshooting and Repair Guide - Part 2. Troubleshooting and Repair Guide - Part 1. Main Index Projects Index Projects By Category Pricelist This site can't exist without purchases from readers, but if you don't need to buy anything please consider a donation to ensure the site's survival. ESP Projects Pages - DIY Audio and Electronics The Audio Pages Elliott Sound Products Audio Project Pages ![]()
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