I have a kenwood KAC-9103D amp pushing 2 jl audio W3 4 ohms speakers. The amp is 500Wx1 RMS. One of my subs just stopped working. I wired it just like the JL website and amp manual explained. The subs worked great for a year. I've checked all the wiring and nothing is lose and the fuses are good. both channels in the amp are good because I checked it with the other sub. can anyone explain?
You have too much power. Although the power is 250 watts a piece. you should never apply the full strength of what the speaker is made for; and if you do the reliability of your speaker will deminish. Hense only one year in your case.
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No, your not over powering your L7, your underpowering your subwoofer.
Your Kenwood is
500W x 1 at 4ohms [20-200kHz 0.5% THD] 900W x 1 at 2ohms [100Hz 1.1% THD]
Your L7 is:
Max Rec Amplifier Power (WATTS PEAK/RMS)*
2000/1000But its ok for your subwoofer, alteast your not giving it to much stress. But personaly, get another mono amplifier that would match your subwoofers rating.
More specifically, the amp must support the resistance of the sub, or subs. If your amp is 2-ohm stable, it can run a sub, or subs wired for a 2-ohm load. Also, whatever the recommended maximum wattage is for the subwoofer, try not to exceed this much, if at all, with the amplifiers wattage.
to get the most power to your subs from that particular amp and those 8 ohm coils just wire the coils in parallel and that will give you a 2.66 ohm load. You will be close to the maximum rated rms output power for the amp that way
The 2 sets of terminals are connected internally. Having 2 sets just makes it more convenient when wiring multiple subs. The amp is rated for 900 watts RMS into a 2 ohm load. The specs claim that it is stable at 1 ohm but does not give a power rating.
The Radial SD competition series from Phoenix Gold are rated to handle up to 600 watts RMS. If you have the model RSdC124 with dual 4 ohm voice coils, it would be best to wire the voice coils in parallel for a 2 ohm load and connect the sub to one set of terminals on the amp. If your sub is the model RSdC122 with dual 2 ohm voice coils, you should wire the voice coils is series for a 4 ohm load and connect the sug to one set of terminals on the amp. Wiring the voice coils in parallel will result in a 1 ohm load. And, while the amp may be stable at 1 ohm, the sub will be seriously overpowered.
Unfortunately some of these speakers today... DO NOT PERFORM up to peak as they should.The on logical reason for this to be happening it that the speakers are NOT very DURABLE and cannot take constant playing. I would recommend to L7 the can take alot more abuse than your average speakers. Good luck and thanks for using FIX YA
That amplifier is 900W x 1 @ 2ohms.
If your subs are 4ohm SVC wired Parallel, resulting in a 2 ohm load, each sub will only see 1/2 of the rated power. (450W ea.)
Your gain (sensitivity) setting should be between 75% and 85% to max. You will be fine.
Most times I hear of people turning up the volume on a head unit and cutting off on the amp it tends to be wired to a speaker with the wrong impedance. I googled kicker comp and got tons of different models, not to mention almost all of them were 250 watt rms. That amp is 900 watt RMS at 2 ohms. If you only have 1 woofer, you can't possibly wire it wrong being all the subs I've seen in the results were 4 ohm. If you are using just one though, you should get a larger speaker, both 2 ohms and 1000 watt rms to prevent distortion. I'm afraid I can't answer your post without further information on the sub you are using.