SO as of now I have an Alpine CDA-7893 Headunit that is putting out 3volts to the mids, and 4v @ the sub pre. I am running a JL 500/1, & 300/4 to 2 sets of Boston Z6's, and an eclipse alu. 12". My question is... If I were to increase my preamp voltage to say 6-8 volts by either upgrading my headunit, or adding a powered EQ will it make a noticable difference? Is it worth it??

 

IMO, not really, use the JL Audio tutorial... http://mobile.jlaudio.com/supp...d=143 to set input gains on the amps.
The amps have an input sensitivity range switch, to optimize the input. 94

PS, the Alpine CDA-7893 is one hell of a HU, [it is the one I have] it has just about everything a HU can have.

 

SO increasing your preamp voltage isn't going to make any noticable difference?

 

nope

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Madvillian45 &raquo;</TD></TR><TR><TD CLASS="quote">SO increasing your preamp voltage isn't going to make any noticable difference? </TD></TR></TABLE>


yes, (very noticable!! dedends on how many volts u step up to). When u have a headunit w/ higher output voltage, more of the output singal gets to the amps
easyer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SRCRX &raquo;</TD></TR><TR><TD CLASS="quote">yes, (very noticable!! dedends on how many volts u step up to). When u have a headunit w/ higher output voltage, more of the output singal gets to the amps
easyer.
</TD></TR></TABLE>

NO NO NO NO NO NO NO NO NO!!!!!!!!!!!!!!!!!!!!!!!!

Easier? What electricity isn't running up hill.

The purpose of haveing a higher deck output voltage is to make up for signal loss accross an RCA. It also is used to drown out noise. BAsically if your source signal is signifacantly louder then the noise signal it effectively reduces the noise.

So as other have said if your gain is set up correctly then deck signal voltage makes no difference. That is unless you like clipping your amplifier.