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post #1 of 6 (permalink) Old 12-04-2011, 12:12 PM Thread Starter
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car stereo guys - need help

I have a 2005 Jeep Grand Cherokee

Head unit - Kenwood DNX-6160
stock factory front and rear speakers
4g power and ground running to the amp

JL 12w7 in a sealed box from Ebay that should match JL specs
I have had a JL 500/1 and now a 1000/1 amp hooked up and I just don't feel either are giving me the bass I should have out of that sub. Honestly it isn't much at all.

I had the subwoofer settings on the headunit at 0 and all the way up to 10. I have had both amps set at the standard JL settings.

any recommendations? settings to double check?

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post #2 of 6 (permalink) Old 12-04-2011, 12:19 PM
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Check what the gain is set at on the amp. What kind of voltage is the car putting out at idle? Are you sure the radio isn't on mute? I have seen all these problems on customers cars in the past.
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post #3 of 6 (permalink) Old 12-04-2011, 12:45 PM
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Few tests you can run.

* Do you know how to tune the sub on the amp? (this can make all the difference in the world)

* What ohm load is your sub wired to? 2ohm? and can the amp handle a 2 ohm load? Double check that. (How exactly is it wired? Length of wires going to each side? How they connect ect.) Even the inner length of wire going to the sub can ruin a sub if you are running parallel.

* Without anything on, softly push the cone of the sub in and make sure you dont hear a sort of scraping sound (making sure the sub isnt popped).

Start there, if you arent sure on any of this stuff let me know and maybe we can meetup and i can give you hand.

Side note, if you want a real bass out of a sub, go ported or bandpass box. Sealed is good but its not gonna give you that deep bass. Sealed is more for the solid thump without a heavy basslines.

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post #4 of 6 (permalink) Old 12-04-2011, 02:27 PM
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Saled is also better for Rock, vanhalens 5150 is badass on sealed boxes cracked up.

but if your listening to dance or pop etc, you need a ported box tuned for low bass.

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post #5 of 6 (permalink) Old 12-04-2011, 02:38 PM
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Another simple one but I've seen it happen, is people reversing the high pass filter and low pass filter switches on the amp.

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post #6 of 6 (permalink) Old 12-04-2011, 03:49 PM
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What do you mean when you say you have the amp at "standard JL settings"? There is no such thing as standard amp settings. Take a pic of the amp controls and post it here. You sure it's hooked up correctly as well?

The 1000/1 is a great amp for the 12w7. I'd recommend a ported box too.

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