Question about Q-Logic QLT-.3508SS Car Subwoofer

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Sub's not playing loud any more

I got two 10 inch kickers and about a week ago their sound has greatly decreased. they still play good but no way as good as they use to be. Any solutions?

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You need to be shure of that,becarefull of hearing loss due to high spl also these speskers are capable of playing although the coils are burnt resulting in poor performance.

Posted on Aug 22, 2007

  • oscar herrera Aug 22, 2007

    note: worn suspensions would cause poor performance also.

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1 Answer

I have a Pioneer GM-5300T amp wired to a 10 inch kicker sub. The music plays throughout the speakers of my car but the sub goes in and out. I noticed that the amp's power light dims when the sub goes in...


Hello pburgfootbal,

You do not specify which Kicker sub you have or how it is wired to the amp. The GM-5300T is only stable to 4ohms in bridged mode and if your sub is a 4ohm DVC with the coils in parallel, it presents a 2ohm load. If the sub is 2ohm DVC with the coils in parallel, the load is only 1ohm. Either configuration would be too low of an impedance for the amp in bridged mode. I'd check the sub specifications and make sure that the wiring configuration properly matches it to the amp.

Hope this helps.

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Max 200 W. You could bridge 2 channels of a 4 channel amp (or get a 2 ch amp and bridge it) and connect the sub. Bridging = connect + of sub to + of one channel, and connect - of sub to - of *other* channel. Check amp manual for instructions.

Don't get a mono - most are 300W or more - might burn the coil during loud passages.

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1 Answer

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One of 2 things is going on.

First, the servo mounted in the driver may be going bad or is picking up some noise.

Second, Something in the amp section is going bad, hard to pinpoint the exact problem.

you say that it plays, so I tend to think it is the driver mounted servo unit.

If it is within the warranty time, take the unit back to the retailer you purchased it from, if not contact Velodyne for repair.

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sounds like the wiring in the speaker from the factory is shoty. rare but does happen. if you bought this from a retailer and have all of your warranty information id send it back and let em fix it

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1 Answer

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there is no such speaker as a solo-X L5.
The Solobaric L5 is 450Watts RMS and 900 Peak.
Check your documentation, and no warranty except Massive Audio covers Burned Voicecoils as it is deemed customer abuse.
If it is a typo, and not an L5, your combination (as long as each is level matched) should be ok to run on that sub. When wiring it as you describe, the two amplifiers need to be identically matched in order for both coils to play at the same level.
Seek professional installations so your warranty is intact.

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1 Answer

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It sounds like you have a bad ground connection. You need to take the radio out and check all the connections. I bet you have a loose one somewhere. That is what the problem was with my bronco

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1 Answer

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Velodyne is known for good service, i think in this case it is best to contact your vendor and have it solved.
I think internally there somethign wrong with the electronics, most likely the amplifier.

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3 Answers

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it is probably the rca inputs on the amp may have fried. was your cd decked turned up loudly before the power went out? did any wires accidently touch each other? If had worked fine and then suddenly stopped, than either a wire came loose or the inputs fried. try using different cables and I also suggest disconnecting power for 24 hours and then reconnect. If the green light is on then it is getting power and the problem is in the rca cables or the inputs

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1 Answer

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how did u wire the speaker ?what is the speaker rated at 2 ohm or 4ohm? thees kicker l7s 15 inch is rated for 1000 rms and 2000 peak the only thing that could of hapend was somthing was touching some were in the wiring or u hade the speaker wired at a load of 1 ohm

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That is a common problem with this radio, for it can not go to loud without going down in volume or shutting down.

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