Question about Lanzar VW12D Car Subwoofer

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The subs in my car constantly hit even when no song is playing. How can i fix this?

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My 10" subwoofer is hitting hard but no vibration, why? please help me to fix this issue.


You need a low pass crossover set at 80 hz & below. It will stop the music you hear in the sub. Don't expect the feel of a single 10 in a room to be like the same sub in a car. A car fills with pressure & gives the feel you want. A ported box designed to work with your sub will give you 3db or more output than a sealed box.

Jan 14, 2014 | Alpine SWS-1041 Car Subwoofer

1 Answer

I recorded drums to the internal click track/metronome and drums are in time with metronome when i play it back with the click from the start of the song. BUT, if i stop in the middle of the song and...


I'd say the click track starts from exactly when you hit play even if you've hit play not right on the beat. There might be a setting or preference that can fix this.

Try rewinding back to be right on the beat and see if it syncs with the click

Jul 01, 2011 | Tascam 2488mkii 24 Track Recording...

1 Answer

They speakers, when they hit hard they make this odd... smacking sound.. Also on just like.. eminem songs and some rock songs that I listen to whenever the subs hit the vocals get distorted, but when I...


Well it sounds like you need a mono block amplifier for the subwoofers. Subwoofers are ment for low frequency. If you try to run regular audio through the subwoofer the sound will become distorted at a high volume. If you have a crossover on the amplifier try putting it on LP. Also do not exceed the RMX rateing on the subwoofer because if you do they will also distort. If you try adding the mono block on to it and it is still doing it you may also be running to much power to the subwoofers.

Jun 13, 2011 | Alpine SWS-1043D Car Subwoofer

1 Answer

I just moved my 12" kenwoods to a new car. i'm running a 760watt amp with 6 guage wire. last week they sounded crystal clear, no rattle or anything. but this week they have a constant loud rumble,...


It sounds like you have a feedback problem between your amp and your speakers this is usually caused by a bad or weak ground between the amp and chassis ground and speakers and chassis groung, also make sure that the correct post on the speakers is the one attached to ground as this makes a big differance especially with high power systems. Hope This Helps Don

Dec 02, 2009 | Kenwood 12" 4-Ohm Single-Voice-Coil...

1 Answer

My kenwood kac-929 1000w amplifier is not powering my sub


unless you are a technician do not mess with the amplifier.
it takes years of school to learn electronics. unless it is a blown fuse or something simple,you will never fix it.
i did kenwood warranty for 8 years and the amplifiers are difficult to repair.

Aug 19, 2009 | Visonik V117SX Car Audio Amplifier

1 Answer

Constant loud muffled noise coming from the sub and speakers.


Try playing with the connection, sounds to me maybe the jack is going bad or has a shorted connection. Plug it in and out slowly to see if that's the issue.

Sep 25, 2008 | Logitech Z-5300 Computer Speakers

2 Answers

Sunfire True Sub Constant Hum & Thump on Initial Signal


IF THE SUB HAS AUTO SIGNAL SWITCH THIS OFF BUT TO BE HONEST IT SOUNDS LIKE YOU HAVE A SPLIT VOICE COIL.

Jun 20, 2008 | Sunfire True Sub Signature Subwoofer

1 Answer

"unknown" songs taking up memory in my sansa e200


Renew music svc sub, convert to Mp3, or update/remove DRM licensing

Nov 25, 2007 | SanDisk Sansa e200 MP3 Player

1 Answer

Songs in playlist do not play


It's a bug.  I hit this as well.  You've gotta update the firmware, and you will stll have to delete all your songs and start from scratch before it will work normal again. 

Nov 27, 2006 | Sirius Satellite Radio S50-TK1 Satellite...

6 Answers

Intermittent Problem


One thing that comes to mind is you said the heatsink had come loose. if this was the case and it was the heatsink for the output transistors. Then this seems to be the best place to look for a broken solder joint. When either the unit heats up or vibration. One of the legs to one of the transisters opens this would case a half wave cycle drop. Do not know if I would consider the sound it would make as static. But it would become very garbled. get a bright light a slowly look over the circuit for broken solder joints use a magnifier if you have one. also wiggle the wires and tap on the circuit with something non-conductive like wood or plactic see if you can make this cause the condition. This may help narrow your search. Check as well on the top of the circuit look close at the transistor leads, because flexing back and forth can case them to break if flexed in the right place.

Aug 08, 2006 | Bazooka BTA10100 Car Subwoofer

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