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have you got the auto ariel lead from the head unit connected to the remote connection on your amp? if not then that is your problem, it turns the power on when you turn on the unit. and turns it off when you switch unit off.
Hey i have looked over many rockford manuals,(i own a 300.1 my buddy owns a 325.1) and for there mono(.1) amps there hooked together on the inside so channel A+ and B + are cencted on the inside the amp. So you ither hook one 2ohm sub to channel A or you can hook 1 4ohm subs to channel A and 1 4ohm sub to channel B. There 2ohm stable so any lower will eventualy burn the amp out.
Ok, you're going to choose 1 set of inputs for the subs on the amp (I usually use the low or rear which ever has more settings) Now in the output side you're going to use the positive side of the right side speaker and the negative side of the left side speaker (you can switch left or right as long as they are opposite sides). Lets start with the negative wire connect it to the negative input on one of the subs, connect the positive wire to the positive input on the OTHER sub, then get an extra wire to connect the inputs not used on both subs. Adjust settings in amp and radio and if it doesn't sound good use negative and positive outputs from one single output (only left or only right) Hope this helps.
You do not say what subs you are connecting or what wiring configuration you are using. But there should be no problem if the amp is powering up normally. I'd check the gain and crossover settings to make sure they match the subs.
Having 2 +'s and 2 -'s is just a convenience for connecting more than one sub to the amp. If you have just one sub, connect to either of the positives and either of the negatives (they're connected internally). If you have 2 subs, you can run separate wires to each sub or you can wire the subs together and then run just one positive and negative to the amp.
A pair of JH4512-04's can be wired to 2 ohms if the subs themselves are paralleled. There's only one voice coil and it's 4 ohm. If wired in series, the final impedance to the amp would be 8 ohms. They cannot be wired to 1 ohm.
In bridged mode, your 4-channel amp is only stable down to 4 ohms. You can bridge 2 of the channels to provide a relatively low 200 watts RMS X 2. The best power solution for your subs would be to bridge channels 1 and 2 and wire one sub to it. Likewise, bridge channels 3 and 4 and connect the other sub. If you connect both subs in parallel, the impedance will be too low causing the amp to overheat and possible fail.
As for the settings: Low pass filter on, crossover somewhere between 80-100, input levels to match your receiver, and bass boost to your personal preference.
if you have dual voice coils connect on each seporate sub negative left channel to possative right channel of the subwoofer same to other sub then conect the left possative and the right neggative to your box power terminal same to other sub then conect the two sub outs on your box left speaker positive to your positive left channel bridge then conect left speaker negative to the right speaker possative then connect your right speaker negative to your right channel negative brigdeg to your amp is single coil hook the box its self up the same way to your amp i have two dual voice cooil 12" hooked up to the same amp that way and it rocks without the power protecter turning on
With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.
Make sure the BOSS isn't in "Protected" mode (Red led lit) and connect the speakers properly (check the connections if they are in "bridged" mode). Also, make sure you set the cross-over, bass boost setting, bass volume control and the bridge mode according to the speakers you are connecting. Check the input level too. The BOSS amplifiers are of very poor quality and it can be easily broken. Maybe yours is broken.