lets to build mini organ keyboard
We can connect a output of pin 5 on the UM3511-IC to drive a transistor output to emit loud sound out to the speakers directly. For the variable resistor-VR1 ac...
compact dj station circuit diagram
The mixer appearance two stereo phono inputs and two stereo line-level inputs and has one stereo bond channel. A microphone ascribe and a stereo capital achieve...
synth mg
There are various approaches to analog synthesizer building, luckily they don`t vary too much in terms of the applied building blocks. The main building blocks ...
Audio Technology Midrange
I recently worked with an Audio Technology custom midrange driver. Since not many of us get a chance to work with drivers like this one I thought I post some pi...
audio mixer in ads
The circuit used was basically for audio mixing, it had an input from the triangular wave generator and the noise generator. And it is passsed through the audio...
multi channel audio mixer using lm 3900
By adding the same circuit parallel with this, you can increase the number of inputs according to the applications. Each input is connected to the inverting ter...
nixie music visualizer
...
hand wired overdrive pedal
Building your own guitar foot pedal Would you like to try your hand at soldering Do you like point to point circuitry Would you like an overdrive pedal that wil...
vu meter using lm3915
This is Version 1 of the VU meter which i have planned to built The final version will be different from the present one as its performance did not meet require...
jet engine sound generator
This jet engine sound generator circuit is based on the sound generator IC HT2844P from Holtek Semiconductors. This particular IC can make four sounds namely lo...
new 4 channel portable audio mixer
The target of this project was the design of a small portable mixer supplied by a 9V PP3 battery, keeping high quality performance. The mixer is formed assembli...
pump it up mp3 booster
MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly easy to take with you; your very own personal sound system` on...
555 audio tone
...
lr passive
ESP - The Audio Pages. Tips and techniques for passive crossover network design, including a design spreadsheet. Much more information than you are used to on t...
audio mixing
The essential principles of mixing audio signals are straightforward, but strangely are not explained very well at all on the Net. This article should fill the ...
ht gps audio revised schematic
An attenuator on the output of the MAX4467 voice amp allows gains below unity. Right now, the MAX4467 has Av=5 and the attenuator cuts it back by about 1/5, so ...
digital volume control
With this circuit you can make the amplifier volume control without having to use a potentiometer, but using a circuit with IC DS1669. For working voltage of th...
surround sound processor circuit
This is the easy build surround sound processor circuit using the digital delay process method. This audio processor isn`t applying any unique function ICs that...
12 led vu meter circuit
This is a simple visual indication of the audio level signals, adaptive to various user needs. Can be adapted to different input levels, adjustable by trimmer T...
multi channel audio mixer using jfet
2N3819 is an n-channel JFET especially manufactured for RF and mixer applications and provides very low noise, very low distortion and excellent high frequency ...