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My amplifier does not want to send power to the subs

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What kind of application is it and what kind of amplifier is it? Meaning home or car, and a brand and possibly a model number. Thanks

Posted on Mar 27, 2008

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Have jvc rx-2020v receiver with mono rca out for sub and trying to hook it up with polk audio rm 1000 w sub woofer with +/- terminals for both left ane right channels plus blue terminal(?). How to?


Your Polk Audio subwoofer is a passive sub and your JVC mono output is for connection to a powered sub. If the JVC does not have an amplified output for a passive sub, you'll either need to get an amplified sub, a different receiver, or buy a dedicated mono subwoofer amplifier.

Oct 14, 2016 | JVC Audio & Video Receivers

1 Answer

The subwoofer output on my Kenwood VR-606 has suddenly stopped working. I have tried the "setup" several times, turning the subwoofer off and back on. Also, when I first power up the system, it emits a low...


It sounds like the problem is not with your VR-606. If you hear a hum from the sub, the problem is more likely to be in the sub's built-in power amplifier. However, it is worth resetting the amplifier to factory presets. To do this, unplug the power cable from the mains supply and reconnect whilst holding down the power on/standby key. If the hum persists, connect any powered speaker to the sub-out socket, power on and listen for the hum. If no hum then suspect the powered sub amp. Turn the sub on with no connection to the Kenwood VR-606. If hum persists, the sub has a problem and will need to be replaced or repaired. By the way, you said there is a low frequency hum through the 'speakers' for about 30 mins. Is that all speakers or just the sub? Hope this helps.
Cheers, Don.

Jul 06, 2014 | Kenwood VR-606 Receiver

1 Answer

Sub woofer does not come on. we checked for power to the cord. what to do now?


If it's an active subwoofer, it will need power from the wall along with a signal from your amplifier. usually this is done over a cable that looks a bit like coax, with the same plug on each end. Make sure your amp is configured to send a signal to the sub and ensure that whatever you're trying to play (i.e. a movie / console game) outputs signals for subwoofer.

If all of these things do not solve your problem... try turning the subwoofer on? (i jest).

Thanks,
Moza805

Aug 30, 2011 | Audio & Video Receivers

1 Answer

Where on my mixer should I plug the subwoofer into? Or would plugging it in somewhere else be better ?


This will depend on whether your sub-woofer is powered (has it's own built in amplifier) or not. If it is not powered it will need connecting to an amplifier. If it is powered you will need a line level output either on the amp or the mixer.
Many modern amplifiers (and some mixers) have a dedicated output for sub-woofers in which case this is the best place for it because the higher frequencies will have been filtered out.
Some high quality amplifiers like the JAMO MPA 101 have a filter switch and adjustable filter level for powering sub-woofers. You then just connect the speaker to the speaker terminals in the normal way.

Otherwise on a p.a. mixer you could use the main output, one of the auxiliary, monitor or sub-mix outputs. If you are not using the main output you will need to route signal to the appropriate output accordingly. Either way your output signal will cover the full frequency range - your subwoofer may have built in filtering or you may need to use some sort of crossover to split the signal between the sub-woofer and the rest of your speaker system.

Feb 25, 2011 | Audio & Video Receivers

1 Answer

I have connected all speakers but not getting anything coming through the subwoofer? I have connected all of my existing Sony suround system speakers 4 corner and one middle and the sub woofer to the...


You need to use an amplified sub. The Yamaha receiver is only sending "Pre-Amp Signal" not amplified audio like the rest of your speakers. If your sub has a crossover built in, connect it's speaker level (wires) to the "B" side of the receiver which will send audio to your sub and it will cross it over internally. Not the best sounding, but it works. Amplified subs range in price from 200 and up. Hope this helps

Jun 14, 2010 | Yamaha Rx-v465/rxv465 Home Theater...

1 Answer

Cannot get power to sub woofer...


Maybe you could name the subwoofer model so we know what it needs for input.

And we need to be careful with the indiscriminate use of the word 'power' in audio discussions. There's wall power and there's amplifier (audio) power.

In the case of subwoofers, some are self-powered (AC power cord plugged into the wall and an amplifier built-in; usually receives subwoofer-specific audio program via RCA cables from YOUR source); others are passive (just get audio power from YOUR amplifier.

Apr 09, 2010 | Pioneer VSX-D504 Receiver

1 Answer

Have 1 subwoffer need to hook it up to a 2 channel input


I must assume that you have a "Sub" output from the receiver that you are using. If this is a dedicated Subwoofer that doesn't have it's own power, you are set, all you need to do is use an RCA cable from the Receiver to the Sub. If this is a dedicated Sub without power you will need an appropriate power amplifier to amplify the signal to the Sub. If this is only one Sub you may search for a Mono Amplifier to save money in your search. The connection from the Receiver to the Amp is the same and from the Amp to the Sub is with a wire that is usually 18 Gauge "Zip cord" unless the Sub has it's own cabling. Place the sub in a corner to maximize the power output and move it away from the corner to smooth the output until you like the way the sound works with the main speakers. If it is too loud or too soft most A/V Receivers provide a way to adjust the volume of the Sub. Enjoy the sound when you get it setup the way you like it but don't blow out the neighbors.

Sep 16, 2009 | Audio & Video Receivers

2 Answers

Can I use front preouts for subwoofer?


First, you have to have a self-powered subwoofer (or two) with this reciver. That means the sub has its own amplifier. These are usually capable of accepting either Line Level (RCA) input or direct L and R amplifier channel speaker wires from your receiver from which it will react only to frequencies in its range. It doesn't actually use any if the power from your receiver's amp.

That is why you can extend your front speakers from the sub. Again, understand this - it is not playing any part in amplifying them. The amps in your receiver are just passing through it.

Setting your speaker 'Type' definition to Large will tell your receiver that they are capable of real bass (as opposed to small satellites) but won't necessarily steal anything from the subs. Set your LFE/Bass Out setting to Both if your front speakers are capable of handling real bass. Why would you want to deny them bass if they can handle it?

This part is confusing "If I can get the sub working on taking the lows out of the front speakers if I set them to large on the receiver then that is one thing less to send to the other sub on the LFE channel". The crossover feature allows you to define what bass goes to the sub. You would use the various points to smooth out the transition between your sub and the rest. Your quote of 47hz spec for something doesn't suggest your other speakers are great bass reproducers. One needs to see the +- db spec with less than x% distortion for that number make any sense.

Your receiver has two RCA Subwoofer Outputs but I'm sure they get the exact same level. If you're having trouble matching two different subs doesn't at least one of them have an adjustment for volume? Or maybe you could use physical positioning to adjust their comparative volume.

May 08, 2009 | Yamaha RX-V663 Receiver

2 Answers

Help


can you tell me how your sub is hooked to your amp. is it via the speaker cables or using the amplifier source sub wooker rca connections.
i suppose you have checked all your power cables. if the sub is connected to the amplifier rca output then check the bass sub out level if high enough to drive the auto power switch of sub wfr input. subwoofers normally use an auto power cutoff when no signal. if sub vol level is too low it might not triegger the autopower on.

Jul 16, 2008 | Yamaha HTR-5840 Receiver

1 Answer

SONY STR-DG510 Sub woofer does not work


You will need a powered sub because your receiver does not amplify in the sub output.

Jan 21, 2008 | JVC RX-554V Receiver

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