Stereo whine

[Brooks Ellis <brooks@fortnet.org>]

>not eliminate whine.  You also might try to take the amp power 
>lead direct from the battery...and turn on with relay.  I dunno but 

!!! This is very important! Use the turn on lead from the head unit to turn
the amp on, but get the power from the battery. I do not recall what kind of
car we were dealing with here, but if it is under the seat, it is a nice
short run. Just fuse it close to the battery.

>what a big capacitor may not still be necessary off the power 
>input....my success with killing rising/falling alternator whine has 
>not been as good as I'd like.

Probably would help - but not that much. A small RF capacitor would help a
lot more. Of course, if you are running many watts, and your headlights dim
when the bass hits, go for a nice big cap to stiffen the power supply. Put
it right next to the amp. 


brooks