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Low level noise causing sub flutter

I have an 02 alero. I have installed vega subs and an amp. I have managed to get power and tunes but when the radio is at zero the subs have low level engine noise and the subs sit there and flutter. Increasing the volume drowns it out but increasing the bass boost just causes the flutter to worsen. All cable have been changed and I have even tried a new amp in the event it was an internal ground problem but with no success. How do I get rid of the flutter and engine noise?

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Try earthing the outer part of the connection of the phono lead. its likely the earth tracker has gone in your headunit

Posted on Jun 24, 2008

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Posted on May 17, 2008

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Power wires and sound cables running close together can cause this problem. Separate them.

Posted on Dec 09, 2007

Install a DC passing and AC blocking inductor inline with the input of your sterio, or install an AC shorting cap in parallel with the DC power input of your sterio. It is being passed from the sterio to the amp and then amplified in the amp.

Posted on Oct 20, 2007

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The ground may not be coming from your stereo it should be coming from a loose wire under the hood. Do u have the factory radio? that might be it if u do

Posted on Oct 12, 2007

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"Sherwood Receiver" doesn't really tell us much about that end of the scenario.

Look at this picture of the sub amp.

http://cgi.ebay.com.sg/CERWIN-VEGA-LW-10-SUBWOOFER-AMPLIFIER-Speaker-Blade-Amp-/350444290153

You COULD run the Main speaker output to the large Red/Black speaker inputs, then some more wires Out from the other Red/Black connectors to your Main Speakers. That way your amp volume control will affect both equally.

Tweak the sub volume, crossover and phase to match it up to your mains.

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When I hook up the speakers in the back to the left and right side for the in and out, do I connect the front or rear speakers. do the speakers connect to the subwoofer first then to my receiver or the...


I was trying to find an owner's manual or picture of the rear panel of the sub, but had no luck. The subwoofer is a powered type - or "active" speaker. This means it has a built in amplifier. These active subs usually provide for one or both "low level" and "high level" inputs. Low level signals are usually carried by shielded coaxial cables and have RCA type plugs on the end. The low level is also called "line level". This is an un-amplified signal that might be heard on cheap earphones - but that's about it. It is similar to the output of a tape deck, DVD or phonograph. These signals require an amplifier to be heard. If you have a sub woofer output on your receiver or amplifier, you could run a patch cable between the low level input on the subwoofer and the subwoofer output of the amp or receiver. You receiver or amp may call this output "low frequency effects" or similar. The front and rear speakers would then connect directly to the receiver or amp's corresponding connections.

If you lack low level outputs on the amp or subwoofer, you'll need to run speaker wires from the amplifier or receiver's front left and right speaker output terminals to the subwoofer's high level input terminals. High level signals are speaker connections or amplified signals. These are typically connections that accept bare wire connections. The front speakers would then connect to the subwoofer's front left and right speaker output terminals. The rear speakers connect to the amplifier.

I hope this helps - and good luck!

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I was given a Cerwin Vega LW12 by a friend. It works fine for some music at any volume, but with certain types it has a popping coming out, even at low volumes. Switched speakers and still happens....


phreewillie,
If you are certain that the problem is not with the speaker(s) the problem then sounds like an issue before the amp.

Did your friend have this issue? If yes, the problem is with the built in amp/crossover. If no, there is some kind of problem in your location.

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-Chris

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If the sub is new, they need to be broken in.

All sub woofers need a break in period of about 5 to 6 hours at medium volume.
The reason is because the glue needs to be cured. This is done by the heat from working.

If you are giving it too much volume too soon, you are burning the glue.

Back off the subs and only play them at medium volume for about a week.

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well my friend either your amp is not powerful enough to push your subs or you have a sub that is shorting out cause i just had the same problem with my 2 15 kicker cvr competition subs

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300 watts RMS is a little on the low side, but it'll power the sub. The sub is rated for 500 watts RMS.

If you haven't already purchased the amp, I'd recommend considering one with a little more output, perhaps in the range of 400-600 watts RMS.

Hope this helps.

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I ran into a similar problem installing a sustem in a Mazda RX8. He had BOSE speakers which operate at a different range. We had to purchase the Rockford 3sixty.

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