FS: MAXIM MAX9709 (2x25/1x50W) based Class-D amplifier board. - diyAudio
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Old 15th December 2014, 08:55 PM   #1
diyAudio Member
doctormord's Avatar
Join Date: Oct 2007
Default FS: MAXIM MAX9709 (2x25/1x50W) based Class-D amplifier board.

Actually i got 3-4 spare boards up for sale here, at $44 each. They're prebuild, tested and ready to run.

Performance were tested and measured by a friend of mine, the results are shown here:

MAX9708 / MAX9709 25W / 50W Class-D - Messungen - #360customs

Some more pictures:


Features are:

- adjustable gain (22dB, 25dB, 29.5dB, 36dB)
- selectable overtemperature shutdown (110 C, 158 C)
- Mono/Stereo (2x25W, 1x50W)
- differential inputs via pin header
- “single-ended” inputs via 3.5mm jack and 10k ALPHA potentiometer
- Speaker terminals on Phoenix plug contacts (screw in exchange coupling)
- Panasonic FR (long life FM series) bulk caps 820uF 35V each side
- black PCB
- 10-22V supply voltage
- fits DP5050 case
- stackable, chainable

Shipping is at $7 by registered airmail to almost any country.
Attached Images
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File Type: jpg IMG_7496.JPG (181.5 KB, 102 views)
File Type: jpg IMG_7497.JPG (250.2 KB, 103 views)

Last edited by doctormord; 15th December 2014 at 08:59 PM.
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