I just finished installing and xtant a300 amp and a cheap little pioneer sub and am having trouble getting it to run. The amp has power and the speaker is hooked up correctly, but when you plug in the RCA's to either the amp or the back of the deck, instead of the sub working, the rear speakers stop working. any idea's on why thats happening? the deck is a jvc kd-s570. any help would be greatly appreciated.

 

short in the deck or your using the wrong set of pre amp outs

 

the preamp outputs are by stinger. I bought them just the other day to put the amp in. hope it's not a short in the deck!!

 

no not the rcas.....how many sets of plugs do you have coming out of the back of your decj that you can plug rca's into?

 

my bad, yeah I only have one set of preouts. They are also labeled rear, which would make sense why the rears aren't working if there is something wrong with them.

 

that might be your problem you might want to look up the manual for your particular model to see the reccomendations of running a sub amp off of it

 

i'm sure i dont have it anymore, but im sure a little internet searching can find it

 

the best thing to do is go to the website of the company and get the exact specs on the deck you might have to run your back speakers off of one amp and split the rca signal to run your sub amp..ive heard that but never actually seen anybody do it for that reason....so leat me know what is going on ill try to help as much as possible

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcvc &raquo;</TD></TR><TR><TD CLASS="quote">my bad, yeah I only have one set of preouts. They are also labeled rear, which would make sense why the rears aren't working if there is something wrong with them.</TD></TR></TABLE> I have never heard or seen a HU that has internal amp cutoff when RCAs are pluged in, but I have seen amps that are screwed up and plugging the outputs of a HU into them will shut the speaker outputs of the HU down [shorting out] ,if the HU still works when RCAs are pluged into it but not to the amp, you can test the pre amp output of the HU by hooking up a small speaker to the RCAs ,pos. of speaker to RCA center pin,neg. of speaker to outside of RCA the sound will be very low, but if the preamp output and RCAs are good you will hear music, maybe unplug the rear speakers so you can hear better, if you can head something ,the amp or the sub is hooped.

hope this helps .94

 

thanks, I'll try that tomorrow!!