I just installed another amp,and a crossover in my 71,and now I have motor noise in the mid/highs.I didn't have this until I put in the new amp,and crossover,so I think it is one of those.Question is how do I get rid of it?

I have all the power wires running to the battery directly.Grounds are to a new plcae on the cab floor,I ground a bare spot and grounded them.The remotes are ran to the switch.

This system minus new amp and crossover have been in use in this truck for a year,no noise.

Any ideas on this problem?

Thanks

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what gauge are you're grounds? No joke, make bigger ones. I used 2 a.w.g on mine I ran a cap 2 amps 2 subs and components to the doors. Ensure the cab is BARE METAL. Also ensure you RCA's are away from power wire

OK redid all hte wiring,moved all RCA away fom power,and redid all the grounds.It is better,but still there.At this point it's tolerable though.

Any more ideas are welcome

try grounding the cab better to the frame/// or you could just get more carbs a bigger cam and listen to real music

cdowns had a good recommendation, find a real nice ground point. Like a seat bracket bolting in to the floor or so, and just lug it there. You can also clean up the main ground connection for the battery as well. I'm an aircraft electrician, I have a bit that you put on the cordless screwgun, that is a circular wire brush, but really tight and small. It makes the perfect size ground termainal point. What size wire are you using for your speakers and power?

I know that you can purchase a noise suppressor. I think they are about $8.00. It is just a cap and a coil. Back in the 70's I had that problem after I installed a amp/equalizer and it was rea bad. It is just installed in the power to the unit and it worked great.

I may have to go to the mechanical fix here,as bad as I don't want to.

OK I have it grounded to the seat bracket,no joy.Here is a wierd thing.In the morning,after sitting in hte dew all night,there is hardly any noise for the first 10 minutes or so.Slowly it gets worse the warmer the truck gets.
I noticed today if I just turn on the key,and eject the CD,it has a pulsating hum until I fire the headunit back up.Sounds like a fast heartbeat.Is this a ground problem as well?Or the source of the whole aggrevation?

cdowns,I will give the cab to frame gounding a try,could just solve the trauma.

Oh I'm running a pair of header mufflers that aren't even to the back of the cab,that is what prompted the AMPs,and speakers :lol:

for your ground you might also try from the firewall to engine// there were originally 2 ground wires from firewall to the valve covers from the factory--- i always ran grounds from firewall to the bolt holes in the back of the heads

Why not try a noise suppressor. Save you a lot of time, work and money.

try your rca wires or turning the amp down what u got i had and my rca wires were bad

......../// or you could just get more carbs a bigger cam and listen to real music
I agree...Who cares about the little :dnd: signs that those who don't realize the true music of a straight piped headered Chevy V8 put up anyways :crazy: