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Old 16th December 2004, 03:43 AM   #1
cowanrg is offline cowanrg  United States
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Default any use for velodyne plate amps?

hey all. i have about 4 velodyne plate amps from their SPL series II subs. they are 1250 watts, 3000 peak. they do pretty well. however, they use accelerometers on the cones. without the accelerometer, they dont quite function correctly. is there a way to fake the input from the accelerometer, OR, where can i get a suitable accelerometer to attach to a cone.

with four of these things, im thinking of some rear-channel sub reinforcement maybe, or who knows... so, has anyone messed with these to know how to get them to work on their own?
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Old 16th December 2004, 06:11 PM   #2
troystg is offline troystg  United States
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Hi cowanrg-

Most likely the accelerometer circuitry is not part of the actual amplifier circuitry. Try to find the tie point and separate them.

Also take a good, detailed picture of the PCB and I'm sure someone here can assist in finding that point.
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Old 16th December 2004, 10:31 PM   #3
cowanrg is offline cowanrg  United States
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sounds good. ill get some pictures when i get home.

actually, iirc, the accelerometer is attached via a 6-pin cable to the main circuit board... i dont think there is any additional circuitry.
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Old 16th December 2004, 11:23 PM   #4
Stocker is offline Stocker  United States
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The accelerometer plugs in somehow to the feedback loop of the amplifier, otherwise it wouldn't work. It *should* be possible to work around / otherwise remove the related circuitry while keeping the rest of the "normal" amplifier part.
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Old 17th December 2004, 05:42 AM   #5
cowanrg is offline cowanrg  United States
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ok, that makes enough sense.

ill just take some high-res pictures tomorrow and post them, and hopefully someone will have an idea.

we also got a driver in from velodyne, and it has an accelerometer attached. i will see if i can get pictures of that too.
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Old 19th December 2004, 08:20 PM   #6
cowanrg is offline cowanrg  United States
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ive got some nice high res pics of both the driver and the plate amp, but my site is all messed up, so i can upload to it ill have to fix that monday and get them uploaded.
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Old 19th December 2004, 10:44 PM   #7
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You can upload to www.imageshack.us too.

I have a velodyne sub with the same 6 pin cable going to the sub, really small wires too. But its no where near as powerful as yours.
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Old 19th December 2004, 10:45 PM   #8
mjarve is offline mjarve  United States
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If you want, I can put them on my site for the time being.
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Old 20th December 2004, 12:47 AM   #9
cowanrg is offline cowanrg  United States
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thanks, but ill see if i can get my site fixed tomorrow, then we'll see...

the pictures will be big, becuase there are a lot, dont want to clutter up anyone's website.
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Old 20th December 2004, 10:42 PM   #10
cowanrg is offline cowanrg  United States
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got it all working (website). here are some pictures of the driver. pretty darn substantial, this is only a 10" driver. very very heavy.

http://www.cowanrg.mesanetworks.net/...e/DSC00047.jpg

http://www.cowanrg.mesanetworks.net/...e/DSC00048.jpg

http://www.cowanrg.mesanetworks.net/...e/DSC00049.jpg

http://www.cowanrg.mesanetworks.net/...e/DSC00052.jpg

http://www.cowanrg.mesanetworks.net/...e/DSC00053.jpg

im going to take the amp apart and take some nice detailed pics of it. ill post those when im done.
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