<font face="Verdana, Arial" size="2">Originally posted by andyrew500:
right now i have the amp input connected to the existing speakers .
and i can hear a little treble and midrange coming from the subwoofer making it sound distorted, and all i want is bass. someone told me if i hooked the amp up to the head unit i would get better sound quality and all bass. thats why im asking about a preamp. is this true? </font>
Hi Rickneurops,<font face="Verdana, Arial" size="2">Originally posted by rickneuropa:
If the headunit does not have a preamp out, you can get a preamp adapter, that connects to the output left and right channel wires, and converts the signals down, and allow you to then plug the signal into the amp via RCA plugs. Most amps require you to have pre-amp outputs to hook up them up properly. Then you would hook up the speakers to the left and right outputs on the amp.
You may be able to get a wiring diagram or headunit info from your dealer, or maybe crutchfield. I hope this is understandable and helpful.</font>
Here's my 2 cents, Steve. I had a set-up in my '82 Mitsubishi with the speaker level outputs into the amp. Let me tell you that the quality is inferior to one with RCA outs.Sound was not as clear and crisp .<font face="Verdana, Arial" size="2">Originally posted by Intrepid175:
If so, do you think the results were comparable with a unit using the RCA jacks?
Hi Shinjohn,<font face="Verdana, Arial" size="2">Originally posted by shinjohn:
Preamp outputs are a very desirable thing when installing outboard amps. As Rob mentioned, the sound quality is simply better.
In regards to your question Steve, I've installed a quality aftermarket headunit and tried both speaker level and line level inputs to see if there is a noticable SQ difference. I think the difference is night and day; the preamp outs are much better. (email me if you want a better explaination why this is so) Compare a factory unit using the speaker outs into an aftermarket amp against an aftermarket deck using line-outputs into an amp, and the difference is even greater.