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No subwoofer output?!

Not getting any output through the subwoofer connection (single female RCA connector) on the rear of the amp! In anticipation, thanks for your help!

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  • Andrew Dunning Jul 30, 2013

    Sorry... My first post & I can't believe I didn't offer info re: Amp / Subwoofer model no's etc!

  • Andrew Dunning Jul 30, 2013

    Linkman Home Theatre AV Amp LM-5040 Amp & Panasonic Active (Powered) Sub - I'm sure the issue is in the setup of the amplifier, but I don't know how to get into 'setup'. I suspect that it is currently setup with 'no sub present' & as such is simply not sending a signal to the sub-woofer! I don't know how to get into the setup area of the Amp (& I do not have an owners manual).

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What brand/model?

Posted on Jul 29, 2013

  • Andrew Dunning Jul 30, 2013

    Linkman Home Theatre AV Amp LM-5040 ...Sorry for my obvious lack of sufficient information! Note: Even if you can point me to an Owners Manual (online) for this device, I would be very grateful. I suspect the issue is in the Amplifier's setup (i.e. currently set to no sub-woofer - I suspect)!

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fcollingwood
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SOURCE: subwoofer

Most AV receivers do not have a built in amplifier block to drive a subwoofer, and merely provide the subwoofer output channel at line voltage. Thus, a powered subwoofer is required. Does the subwoofer require mains power? From your description, I'm guessing it doesn't. If not, it does not have a buit in amplifier, you will need to purchase a monoblock amplifier, which is just a mono amplifier with a volume control, no tone controls or anything else. Make sure that the amplifier power rating is as close as possible to the subwoofer power rating, as it is quite possible to blow a speaker by using an amplifier whose power output is too low, by overdriving the amplifier , and putting DC through the voice coil when the amplifier clips. If it does require mains power, it will have an amplifier built in, but does not have line level inputs.

Posted on Sep 14, 2007

SirHanz
  • 145 Answers

SOURCE: subwoofer connection

if this is ao powered sub, that plugs into the wall, there should be no problems, if it is powered solely by the reciever it may work fine but be sure you dont exceed amperage on the subwoofer.

Posted on Jan 29, 2008

  • 4 Answers

SOURCE: Bose Acoustimass 15 woofer, Replacement of RCA female connector

On the end opposite of the jacks (top of the sub opposite connectors) in the exact middle, there is a ratchet looking device (flashlight and magnifying glass reveal the little culprit) with a very small flat screw driver rotate the piece CCW until a small tab is protruding from the middle. Pu the palm of your hand on the plastic case and give it a small whack (in the direction of the jacks) it will move about a 1.2 inch. Lift straight up and the case will come off and reveal the connectors. Trust me, get a flashlight and magnifying glass and peer through the small crack between the cover and the box, you will see the little notch (encoder looking) rotating wheel

Posted on Dec 15, 2008

  • 121 Answers

SOURCE: dayton sub-100 connection

You have it upon one of several truly odd "standards" in the AV industry but the answer is simple if not quite logical. You will use an RCA type cable from the Sub out or LFE on the receiver to just one of the two inputs on the subwoofer. I usually use the one on the right but it really doesn't matter. The other connectors would be for a system with out a sub out where the speaker wire would be run first to the subwoofer and then out to the speakers. This will not be used at all in your case.

Enjy!

Posted on Feb 27, 2009

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Subwoofer


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