THE MIGHTY FLEA BATTERY GUITAR AMP
Back in 2017, I designed “The Mighty Flea” – a 20W battery guitar amplifier aimed mostly at acoustic jazz guitarists, and built a couple of prototypes. I used to go to gypsy jazz festivals a lot, and I thought it…
creating music
creating music
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The MASSCOT Guitar Preamp Compressor Overdrive EQ
MASSCOT stands for Massive Analogue Sound Shaper – Compressor, Overdrive, Tone. It’s a guitar preamp, overdrive, optical compressor and EQ that creates a full, warm sound, as you will only get with top quality analogue circuitry. At the heart of…
Giving An Analogue Mixing Console Some Love
This lovely analogue mixing console, a Soundtracs PC-MIDI 24 track, was fully restored, and then purchased by a well known Electronic Dance Music producer based in Amsterdam. An audio mixing console like this can be a great value investment for…
How To Build An Audio Test Bench
To work on audio electronics, you need some audio test equipment. In this article I discuss what you need and how much you need to spend on it. This audio test bench served me really well, and I still use…
MPA GOLD Mic Preamp Repair – thank you ART
A friend asked me to fix his ART MPA Gold Dual Mic Preamp. It’s really nice to be able to dish out a fat spoonful of audio-praise to ART, who were ultra-helpful in helping me get this repair done. The…
Universal Audio 4110 and Millenia HV-3D Mic Preamp Repairs
I was recently contacted by the owner of a local studio who had two high end mic preamps (Universal Audio 4110, and Millennia HV-3D), both of which had developed noisy channels. In both cases the channel in question was producing…
KEF PSW2000 Subwoofer Repair
UPDATE Because of the number of issues I have seen with the KEF PSW2000 subwoofer, I am no longer accepting repair jobs on them. The mechanical construction makes them awkward to work on, and they seem to have just too…
Dynacord “Eminent” Valve Amplifier Restoration And Conversion
The Dynacord “Eminent” is a nice old German made valve amplifier that I was asked to restore. It was originally designed as a small mono PA. It has two instrument and two mic inputs, simple bass and treble tone controls,…
Rebuild Of An Audio Mixer Power Supply
This mixer power supply belongs to a Soundcraft Delta 200 desk which I restored. It is pretty old. On first inspection the output voltages were correct, the only problem was that the mains transformer made an annoying buzzing sound. Looking…
How to test an amplifier without speakers
This is a very simple project that takes only a few hours to make. It is a pair of 8 ohm resistive loads which can be used to test a mono or stereo power amplifier. If you have ever wondered…