any use for velodyne plate amps?

cowanrg · 16th December 2004, 03:43 AM

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?

troystg · 16th December 2004, 06:11 PM

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.

cowanrg · 16th December 2004, 10:31 PM

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.

Stocker · 16th December 2004, 11:23 PM

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.

cowanrg · 17th December 2004, 05:42 AM

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.

cowanrg · 19th December 2004, 08:20 PM

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.

thomas997 · 19th December 2004, 10:44 PM

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.

mjarve · 19th December 2004, 10:45 PM

If you want, I can put them on my site for the time being.

cowanrg · 20th December 2004, 12:47 AM

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.

cowanrg · 20th December 2004, 10:42 PM

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.

16th December 2004, 03:43 AM	#1
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	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?

16th December 2004, 06:11 PM	#2
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	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. __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

16th December 2004, 11:23 PM	#4
Stocker diyAudio Member Join Date: Dec 2003 Location: Austin	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. __________________ Jesus loves you.

19th December 2004, 10:45 PM	#8
mjarve diyAudio Member Join Date: Apr 2004 Location: Northeastern Minnesota	If you want, I can put them on my site for the time being. __________________ /Mike

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

16th December 2004, 10:31 PM	#3
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	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.

17th December 2004, 05:42 AM	#5
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	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.

19th December 2004, 08:20 PM	#6
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	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.

19th December 2004, 10:44 PM	#7
thomas997 diyAudio Member Join Date: Feb 2004 Location: Vancouver	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.

20th December 2004, 12:47 AM	#9
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	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.

20th December 2004, 10:42 PM	#10
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Velodyne Servo plate amp	Kickin Wing	Solid State	5	12th January 2009 03:05 AM
F/S or trade Velodyne SPL-1200 plate amp	ginsner	Swap Meet	1	22nd January 2007 05:56 PM
FS: Velodyne subwoofer amps...	Stuart Easson	Swap Meet	12	9th June 2005 01:07 AM
Plate amps in the UK	Matttcattt	Multi-Way	4	5th June 2004 11:04 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read