Question about Kenwood SW-38HT Subwoofer

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100watt sub MY sub has a constant buzzing bass sound coming out of it... whats the deal?

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  • Anonymous May 26, 2008

    it has a constant buzzing and it gets louder when the volume is turned up

  • Warren Laurent Oct 10, 2008

    Fuse blown, replaced fuse - blown again....another fuse and smoke coming from heat sink /circuit board connection.



    Is it worth taking to a repairer?



    Warren Laurent

    Cedargrove Qld Australia

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  • 4,234 Answers

There is a problem wwith teh power supply or the amp section. Does the noise remain constant or does it vary in volume? The sub should have a level control, does the noise vary with that control?
Dan

Posted on Mar 20, 2008

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I think it wants you to raise the volume high enough on the sub so IT can hear at least 75dB. It can always adjust the sub downward if necessary. Max it out at the sub and let Audyssey deal with the adjustment.

Your crossover frequency selection would be a piont below which you want the sub to activate. It depends on the bass capabilities of your other speakers. You want some overlap so there's no droop in the crossover region where your main speakers roll off.

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Phase reverses the polarity of the driver so it can be matched to the other speakers and bass-reinforcement characteristics of its position in the room. You don't want the sub 'sucking in' while other speakers are 'pushing out' or a bass cancellation will occur.

Set it, listen to bass from your normal seating position, reverse it and observe if the bass gets subjectively better. Leave it in the 'better' position.

Cutoff is a variable for the highest frequency where the speaker 'cuts off'. You can experiment with adjusting it for what sounds to you like the smoothest transition betwen the sub and the othere speakers. You don't want a lot of audible overlap where the sub and other speakers are acting on the same frequencies. It may sound to bassy in that area.

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What is Phasing and how to set it up


he phase control will help the sound waves from your sub get synced up with those coming from your main speakers. If they arrive out of phase, there's the tiniest delay between **** Jagger's voice and Bill Wyman's bass, for instance. An easy, accurate way of setting the phase control is to reverse the connections on your main speakers (the black wire goes to the red terminal and the red wire to the black terminal). Now play a simple selection, like a jazz instrumental with a good walking bass line, on your system while you're sitting in your listening position. Have a friend dial the phase control on the sub until you hear the least amount of bass. Leave the setting there. Returning your speaker wires to their proper places will now allow you to hear the most bass from your sub.

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Have got v125 and k7s. what freq should i set on back of sub?


Since bass response is heavily dependent on speaker placement and room ineractions that would depend on how everything sounds in YOUR room.

You don't say what the amplification comes from, but if it has a speaker level routine you might use IT or a good bass-rich music program to evaluate the effectiveness and smoothness of the bass response where it crosses over from your main speakers to the sub. Use your Mark.1 Earholes and personal preference to make the best choice.

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Humm noise coming from 10" 100watt sub only plugged into wall...


If you're using it first time, check the sub cable u're using, low-quality rca cables can easily pretend to act as an antenna and pick up parasite and hum from electric lines or from other devices, also another factor is too-long cable. If u're using a cable longer than 5m, it should be really hi-quality and well screened. Or the hum is inevitable. I hope this helps.

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When watching movies, our sub makes a popping sound when there is a lot of bass. is our sub blown?


Yes - it sounds like it has been blown. It might just be that the bass is too much for your sub but if you've never heard it before until now, then
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How do I get more bass out of the system?


To get a better bass output from the sub. The best place is in the corner next to a wall. Doing that is called corner loading. Like you put a firecracker on your hand you might just get burned,buy if you close your hand...you will have to goto ER. And it is not a boomy sub. Small 5 1/4" woofers.You wand good bass? Take it back and buy klipche. Great sound and bass for a decent price.Or go all out and buy the Bob's Sunfire sub. and tick off all your neighbors. that little thing really pounds. I own two. When I played twister, My celing in my new home cracked. I got picts. If you want something simple like the 321,try Kef instant home therei <<spelling. Has a 10" sub.Bought for my father. Sounds great. Just 2speakers DVD/CD/Radio unit and sub.Simple one wire hook-up. and speakers.
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Buzzing Cerwin Vega LS-12 Subwoofer


Generally, a buzz from your sound equipment indicates some sort of nearby EMI. The normal culprits and.or possible fixes that I've found are:

- Remove any other electronic devices plugged into the same outlet as your subwoofer

- If the woofer is on a power strip/surge protector, remove it and plug directly into the wall

- If there are any nearby wireless devices (cordless phiones, WiFi eqiupment), disconnect/power down them

- Try connecting different speaker wire between the woofer & the receiver

- Try turning off all other eletronic equipment with the exception of your receiver


Let me know if any of these help and good luck!

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