| Home |
| Search |
| Today's Posts |
|
#1
|
|||
|
|||
2 amps only one gets noise
i have two separate amps hooked up, one for subs and one for 6x9's. the smaller amp has its own ground, but the power and remote are off of the other amp. the sub amp is running off of sub preouts, the other of of the rear outs, not daisy chained. even when i used the high outs instead of the rca's, it continued to pick up alternator whine, the other never has. Do i just need to create its own power lead or is the small amp the problem? any hlep? thnx -- huggybear77 ------------------------------------------------------------------------ huggybear77's Profile: http://www.caraudioforum.com/vbb3/me...p?userid=34885 View this thread: http://www.caraudioforum.com/vbb3/sh...d.php?t=224373 CarAudioForum.com - Usenet Gateway w/over one million posts online! |
|
#2
|
|||
|
|||
|
It's doubtful that the power lead is the culprit. It's most likely the
ground lead. Try a new ground. And yes, it's common for one amp to exhibit alternator whine but not the other. Some amps are more "prone" to it. Besides, the amp running your 6x9s will naturally be more sensitive to it since it's not filtered out. On Sat, 27 Aug 2005, huggybear77 wrote: i have two separate amps hooked up, one for subs and one for 6x9's. the smaller amp has its own ground, but the power and remote are off of the other amp. the sub amp is running off of sub preouts, the other of of the rear outs, not daisy chained. even when i used the high outs instead of the rca's, it continued to pick up alternator whine, the other never has. Do i just need to create its own power lead or is the small amp the problem? any hlep? thnx -- huggybear77 ------------------------------------------------------------------------ huggybear77's Profile: http://www.caraudioforum.com/vbb3/me...p?userid=34885 View this thread: http://www.caraudioforum.com/vbb3/sh...d.php?t=224373 CarAudioForum.com - Usenet Gateway w/over one million posts online! |
|
#3
|
|||
|
|||
|
what about a ground loop? i've never experienced this i only know its
something to avoid, and you didn't mention that they were grounded at the same spot. "huggybear77" wrote in message news:1125143826.288edd022b97efa2ebb97e3931dc8d00@t eranews... i have two separate amps hooked up, one for subs and one for 6x9's. the smaller amp has its own ground, but the power and remote are off of the other amp. the sub amp is running off of sub preouts, the other of of the rear outs, not daisy chained. even when i used the high outs instead of the rca's, it continued to pick up alternator whine, the other never has. Do i just need to create its own power lead or is the small amp the problem? any hlep? thnx -- huggybear77 ------------------------------------------------------------------------ huggybear77's Profile: http://www.caraudioforum.com/vbb3/me...p?userid=34885 View this thread: http://www.caraudioforum.com/vbb3/sh...d.php?t=224373 CarAudioForum.com - Usenet Gateway w/over one million posts online! |
|
#4
|
|||
|
|||
|
they've each got separate grounds. do I use the same ground? -- huggybear77 ------------------------------------------------------------------------ huggybear77's Profile: http://www.caraudioforum.com/vbb3/me...p?userid=34885 View this thread: http://www.caraudioforum.com/vbb3/sh...d.php?t=224383 CarAudioForum.com - Usenet Gateway w/over one million posts online! |
|
#5
|
|||
|
|||
|
Try using a distribution block for your grounds, then you only really need
one. "huggybear77" wrote in message news:1125208613.7b1d20e611e280aa730605721c6d6b17@t eranews... they've each got separate grounds. do I use the same ground? -- huggybear77 ------------------------------------------------------------------------ huggybear77's Profile: http://www.caraudioforum.com/vbb3/me...p?userid=34885 View this thread: http://www.caraudioforum.com/vbb3/sh...d.php?t=224383 CarAudioForum.com - Usenet Gateway w/over one million posts online! |
|
#6
|
|||
|
|||
|
yes both the grounds should attach to the body at the same place, if they
don't you can get a ground loop which is bad but i don't know what the product would be in car audio. Would be worth moving your grounds if they're close enough. "huggybear77" wrote in message news:1125208613.7b1d20e611e280aa730605721c6d6b17@t eranews... they've each got separate grounds. do I use the same ground? -- huggybear77 ------------------------------------------------------------------------ huggybear77's Profile: http://www.caraudioforum.com/vbb3/me...p?userid=34885 View this thread: http://www.caraudioforum.com/vbb3/sh...d.php?t=224383 CarAudioForum.com - Usenet Gateway w/over one million posts online! |
| Reply |
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| common mode rejection vs. crosstalk | Pro Audio | |||
Linear Mode
