[crowmar kirkliss]

hi, recently amped the rear speakers.

ran them to the amp in the boot which powers the sub.

Started getting feedback, i reasoned this was because i had run one of the speaker cables alongside the power cable. So i rerouted it up the door pillar, under the roof lining and down the other side

however the buzzing feedback noise still comes from the speaker.

ive tried changing all the settings on the amp but to no avail


discuss

 

[snowboundzero]

Any chance of a bit more info fella.

You got any LOC's
Model of the amp, How many channels?
What gauge power cables are you using?
Where have you earthed it to?

Have you just attached it to the same outputs as the sub?

I've always ran speaker and power cables down the same side and never had a problem with feedback or buzzing.
Proper audiophiles will always separate though.

 

[sixphredd]

wheres the earth mate? and is it when the engine is running or aswell as off?

 

[crowmar kirkliss]

Any chance of a bit more info fella.

You got any LOC's
Model of the amp, How many channels?
What gauge power cables are you using?
Where have you earthed it to?

Have you just attached it to the same outputs as the sub?

I've always ran speaker and power cables down the same side and never had a problem with feedback or buzzing.
Proper audiophiles will always separate though.

No LOc's
two comps front to the head unit.
two inphase 6.5 woofers rear to the amp in the boot. channel 1 and 2
1 1000 watt sub in boot, run to channels 3 and 4 bridged.

Its the woofer on the passenger side that is buzzing. Im not sure of the the power cable guage will check that tomorrow.

The amp is earthed to a bolt, that you can see if you lift up the flap of carpet that sits behind the rear seats and between the hidden boot compartment.

 

[snowboundzero]

Try swapping channel 1 and 2 over to see if the buzzing swaps sides.
You'll need to do this twice, do the speaker cables and make a note if it changes sides, put them back to normal.
Then swap the input/RCA cables and see if the buzzing changes sides.

This will help you work out where the source of the buzz is coming from.

Speakers, cables, amp, rca cables, head unit.
Its all about elimination.

Running 1000w you need a decent gauge cable, Think im running 4 gauge on a 500watt.
I know the earthing point your talking about, if the cable check doesn't show much might be worth trying a different earthing point.

Few month ago i helped someone out and it turned out to be the RCA cables, they were cheap and nasty.

 

[sixphredd]

This guy is a man of my own thinking, he what hes on about, the process of elimination is a marvelous thing or in other words keep asking yourself why untill you can no longer ask why and then youll have your answer

 

[crowmar kirkliss]

ok thanks guys i will check it all today.