I have 2 12" kicker solar baric squares L7 hooked up to a kicker cx 1200.1 amp as soon as I turn bass knob up it cuts out and amp goes into protective mode plus I have a 3 microfarad copasitor hooked up as well

The CX1200.1 amp is 2 ohm stable. Hopefully, you have the 4 ohm DVC version of the Solo-Baric L7. If so, connect the DVCs in parallel (both positives together, both negatives together) to the amp. This will maximize the output power of the amp. If you have the 2 ohm DVC version of the Solo-Baric L7, the best you can do is connect the DVCs in series to the amp. This will cut the output power in half, though.

On the amp there should be High pass and a low pass setting. Put it on low pass cause if its on high pass or in between it produces normal noted like a speaker. Low pass will filter out all the high frequencies.

you should use an amp with approx half the power of the speakers max output (i.e 1000 watt speaker use no more than 600 watt amp)

its either a bad voice coil or your amp is under powered while hitting good bass, could try a CAP or replace your car battery

As stated before, knowing the impedance of your subwoofer would really help the situation. Either way the link I have provided is to your subwoofers manual (Incase you dont have it)

But since you have said it has smoked, if it still works I recommend turning the bass boost down (Bass boost causes alot of heat within the subwoofers voice coil and even within the amp itself and should never be maxed out.)

Here is a link to your manual for the subwoofer.
http://www.kicker.com/sites/default/files/SoloBaricL7Series.pdf

So as a solution to your issue, keep your bass boost turned down. You should almost never need it if you have tuned your amp correctly (You have a very serious subwoofer there)

Consider yourself lucky if your subwoofer is still working without issues.

This will help you :)


Below is a link to the subwoofers manual where is clearly states how to wire it all up, it includes both the 2ohm DVC and 4 ohm DVC models.

Click Here for the L7 Solo Baric Manual

All depends on your amp. Is it 1 ohm stable or not?
Parralell:
positive (pos) on voice coil 1 (vc1) to Pos on vc2 and negative (neg) on vc1 to neg on vc2. Then speaker wire from amp to one vc only = 1ohm load.
Series:
Pos from amp to Pos on vc1. Neg of vc1 to Pos of vc2. Neg of vc2 to amp = 4 ohm load.

You need to lower the Gain just a little.

sell me the subs it would be better

common problem of this subs are in the litles cables that goes to the voice coil. few times brock....check those. another .....if you heard the music too hihg with many bass..and your amp ..i think is big block... may be you blow off!!!!!!!!! the voice coil and the little wires...im calling trencillas...are the aquiles talon of this L7 and a manny others kickers. check the ¨TRENCILLAS¨ FIRST.