Hi ...this is my first post

I begin my story...
I had an amplifier for my composite speaker (a 4 way) ... (sorry for my english and i dont know a lot about car audio specification... ) but i had disturb sound that was coming from my engine's car. So the salesman change my amplifier for another one (supposely the same quality!) ...
But im not sure... i think my sound is a little worst than before :1

Anyway ...I ask for a better amplifier... he asked me 150$ more for it.

My old amplifier was :
Soundstream 4 way channel LW4.480 ( i bought it around 350$)
The new amplifiers is :
Soundstream 4 way channel EGA 560.4 (ha ask me 500$ for)

He told me that he got this new amplifier for a cheep price (normally its around 700$)

I want to know if you think its a good deal or not?... if i should keep my old amplifier??

thanks in advance (and ill do my search too :p )

Hell, I got a QSC RMX 2450 for $370.


I'd shop around more.

__________________
-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build)

I just don't understand what an amp got to
do with the engine.
I don't see how it could cause your car's engine
to produce strange noises.

I you are refering to alternator whine then the
amp is most likely not the culprit but I would
suspect the wiring.

RCAs running to close to high power accessories could
induce this noise.
Same goes for the power and ground wires.
Also if the RCAs are to close to the power wire then
alternator whine is possible.
What you need is someone who knows what he's doing
and nows how to trouble shoot.
You didn't need a new amp you just need a new shop.

Louis.

__________________
Not always the smartest but certainly not dumb?

think he means engine noise in the amp, not the other way around, and this is most likely due to a bad ground.

make sure you have a clean ground, using the same one for all your components if you have too.
FORGET the idea of noise "suppressors" they will only ever give you more trouble than before..

I agree with rudolphgreen. It sounds much like a grounding problem. Check all grounds. At the amp, at the deck, everything under the hood. I'll bet you either have a loose ground connection, or possibly an inadequate ground.