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Re: Sony XM-1252GTR Amplifier
Can it power the subs? Yes.
Can it make them crank? Well, that all depends on your expectations. That amp/sub combo is going to give each sub about 125W, which isn't much. But if it's what you have, it's better than nothing. You might also consider using only one sub and bridging the amp. This would put about 340W on the one sub, which is much more reasonable.
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Turn up the gain on your amp until you get the amount of bass you want or until the sub starts to distort. If you do this and you are still unhappy with the bass, you will need a bigger amp or better subs.
If your sub woofers are SVC (single voice coil) 2 OHM each, then connecting one to each channel would make the amplifier run in 2OHM stereo
Then again, if your sub woofers are 2OHM each, it would be better to connect both together in series and connect them to the BRIDGE specified speaker terminals of your amplifier making it run a 4OHM load into one channel.
This will give you all the power the amp can give and still run stable.
A 2OHM load into one channel will likely damage your amplifier.
Do not forget to set the LPF (low pass filter)on if you are going to use the amplifier to run sub woofer/s.
The Kicker L7 has an RMS power range of from 50-750 watts and a maximum power handling capability of 1,500 watts so your Sony amp will power it OK. A more powerful monoblock like the Alpine MRP-M1000 or the Kicker 08ZX750.1 would provide even more power and could operate safely at 2ohms.
You have the voice coils wired properly for the Sony amp. It's OK to have the sub impedance higher, but you definitely do not want it lower than the 4ohms the amp is rated at in bridged mode.
The sub you want is ONE single 4 ohm voice coil sub that is no higher than 500 watts in power but more than 350 watts. Your amplifier puts out the most power in the bridged state at 4 ohms so this is why you want a single 4 ohm voice coil sub. Also, you don't want to over or under power a sub so you want your sub to match or come close to your rated value of the amp. Good luck
Yes. If the rated power is 380W and the Max power is 1000W then it will handle it. Subs fry when clipping occurs. Clipping is when the amplifier is pushed past its capabilities and the output to the sub gets "dirty". The better quality the amp, the safer it will be on your speakers. It is also important to remember that the gain control on the amplifier is NOT a volume control to boot the sound, it is only to match the output from the headunit to the input handling of the amp. Cranking the gain up too much WILL CAUSE CLIPPING.