|Class D Switching Power Amplifiers and Power D/A conversion|
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|12th February 2012, 06:31 AM||#1|
Join Date: Dec 2004
Location: West London
low wattage mono amps
This may seem like a stupid question, but.....
Are there any boards/kits/schematics out there for single channel amps in the 10-15 watt range?
I am engaged in an ongoing project to convert my entire library to FLAC, to stream wirelessly with AirPlay dierectly to each set-up. As a first step, I am interested in converting a set of speakers to an active configuration, with on-board amps, and am looking for a solution other than running two t-amps with one channel fed to each half of the board.
Any suggestions would be warmly welcomed.
|12th February 2012, 12:27 PM||#2|
Join Date: Apr 2008
I'm just about ready to have PCBs fabbed for something in that field.
It uses the TI TAS5727 chip in PBTL, meaning
15W into 4Ohm @12V single supply
38W into 4Ohm @18V single supply
The TAS5727 has digital input (i2S), soft limiter and a programmable DSP, interesting for speaker cabinet equalization etc. See here: Speaker Amplifier and Modulator - Mid/High-Power Amplifier - TAS5727 - TI.com
The board is meant to be used for distributed audio systems.
At higher supply voltages it can even serve a subwoofer IMO.
Here is a PCB render. If you're interested, I can have a few more built.
You don't need a weatherman to know which way the wind blows --Bob Dylan
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