hey guys I really need some help. yesterday I installed a pioneer 2900 deck into my 94 es300 i connected my rca output from my amp to the deck which was previously connected to my loc to power my subs (rca component) because I had my factory deck still. so when I connected the cable from the loc to thee decck there was barely no feedback from my rockford fosgate 12" p1 subs we thought it couldve been the deck so we tried a higher model which was the pioneer 4900 and it was still the same thing we tried another sub pioneer 12" and it was still the same thing please help because the only way my subs would work with the deck is if I connect it to the loc and I have no control over my subs thanks

 

I'm not familiar with the 2900 but I have used the predecessor to the 4900. Did you connect the RCAs to the sub output? Did you turn on the sub output? Did you adjust the gain on your amp? Did you adjust the sub output levels at the receiver?

-Robert

 

Yes the RCA's were connected to the sub output. Yes, the sub output was on and the gain on the amp was turned up all the way same witht he sub levels on the reciever

 

bump!!!!!!!!!!!!!!!

 

did you connect the rca's to the loc? the signal would be to low for that.

 

thats the only way they work whentheyre connected to the loc it doesnt even work with the rcas connected to the deck and amp

 

have you tried running a new cable from the head unit to the amp?

have you swapped another amp in to be sure it's not the amp at fault?

 

WERD.
the RCA should never be conected to the front side of the LOC. lik MJHS said, try to to use known, good rca's

 

yeah i tried a new cable to the amp and it still didnt work i havent tried another amp though

 

Well, you tried these:

New Cable
New Head unit

The only thing left to try is:

New Amp --

Just take a good close look at the settings on the amp to be sure it doesn't have different input modes you need to configure--

I've seen many amps have 2 or more input configurations you have to select according to how you're sending signal to the amp-- IE-- front, rear, and sub rca's separately, or just one set for all -- or front and rear sets minus a sub rca-- etc....

 

make sure the fad/bal is centered also. great troubleshooting MJH

 

ok i'll check it out tomorrow i dont know if my amp has that feature though i got the Rockford Fosgate 2-Channel Car Amplifier P200-2

 

bump!!!!!!!!!