Re: there is no sound coming from my 15's when my stereo...
Check the voltage at the amplifier when on should Have 12V on PWR and Rem. Have seen situations where the amp powers but the voltage is low so the amp does not work... Also check your Subwoofers make sure they are good. and the connections to the subs. The wire inside the box and to the amp.
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they want you to "level match" the amps head units voltage from the rcas .this is best done with the radio at 3/4 volume , turning the amps gain dial till music distorts then backing off till it sound s clear .if theres other units in the signal chain (eq,x overs, ) see if they too have gain /volume controls . it goes down the line if thats the case . .
Ssometimes the antenna wire is not enough to turn on the amp , some cars use relays in thier power antenna turn on set up which require low 500 ma 's . hit the amps turn on post with 12 volts directly from a jumper wire with alligator clips from main poower wire , if it still wont tunr on the amp the amp may be faulty , also check amps ground , metal its grounded must be free of paint , undercoating rug ect ....
The cable should not cause the problem unless it is shorting out somewhere on the remote or positive cable. I would use a larger gauge wire first as this is the cheaper way to go, and if the same problem occurs you are having a short in the sub or box causing the protection mode. You will have to back trace to find possible cross connections.
Did it stopped working ?
check your main fuse line under the hood ?
you should have one ! replace it ?
know if it works fine out what ohms is your amp best plays at!
and connect the correct woofer ohms ..
for that power at the most two 8 inch woofers or one 12 ich thats pushing it!
you are going to need an amp that can supply the right amount of rms power to make it sound good. these sony subs are rated for 380 watts rms. so in order to find an amp that will supply two, you must multiply that figure by two. so you will need an amp that can supply around 500 to 750 watts continuously (or rms). also you are going to want an amp that is either class d or class ab rated. these amps are built to push subwoofers exclusively and will give you the best efficiency and sound out of your subs. you will also want to get an amplifier is a monoblock amp, and not a stereo amplifier. make sure the amp can put out that rms rating at 2 ohms as two 4 ohm speakers equal 2 ohms wired in parallel. i have a kenwood kac9152d that puts out about 2000 watts max at 2 or 1 ohms (900 watts rms) that i used with my two sony xplod 10's for about 2 years. it was kick ***! now i dont know if you need that much power but they will handle it as long as you dont push them too hard for long periods of time, otherwise you might end up blowing them up! (depending on the box size that is, and the quality of it as well...)
i have years of car audio installation experience and can help with setting up and wiring any mobile entertainment system you can imagine. may i ask what kind of music you listen to and what kind of box do you have for these subwoofers?
ive had problems kinda like this ... normaly its a crossed or reversed speaker wire check the positive and negitive wire into the speakers "they move sometimes when there is more air moving around the speaker"
second make sure you have the impedence correct "possitive to positive negitive to negitive'