Question about Paradigm PS 1200 Speaker

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Power source I cannot get power to my sub. We had a power outage last weekend and I unfortunately left the sub plugged inot the wall outlet. Now I cannot even get it to power on. any suggestions?

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Re: power source

I have PS-1000 and same problem. It looks like power transformer got partially shot (reads 11 V AC instead of 56)
I just don't know if it's all the problem or there is something else. And where I can find replacement transformer?

Posted on Jun 17, 2008

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QS10 powered sub, won't turn on while plugged in

It is possible that your powered sub is in standby mode until it is turned on by audio input from your amp. Usually there is some type of indicator that shows power is being applied to the sub. Also, there could be an open fuse inside the sub.

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Klipsch soundbar (SB1) won't power on ... green light on power adaptor seems to trip and go off when I power on the SB

I have read that this may be due to the order in how the AC adapter is attached to the sound bar. After some research I found that you need to unplug the AC adapter from the wall and the sound bar and let it sit for about 15min. Then flip the power switch "ON" on the sound bar and connect the AC adapter to the rear of the sound bar. Lastly, plug the adapter into the power outlet.

Feb 21, 2013 | Klipsch Speakers & Subwoofers

1 Answer

Buzzing sound when sub is on even without turning my amp on, if you can call me on my phone 909 938 9219 it be better for me thanks, i am little slow with my computer, please help

Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's.

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights.
I've also seen variable track lights induce noise but it's usually minor.

Try rotating the power cord in the wall outlet.

If it still buzzes with no cables or anything external attached there's an internal problem.

Apr 30, 2011 | KEF Audio PSW 2150 Speaker

1 Answer

Can`t power it up. Connections and fuse OK. Stopped working after switching off and would never switch back on. LED indicator light`s neither green nor red but simply off.

First, I have to commend you for having a really fine piece of equipment. Mission makes great products. Now down to business. Being where I am and not being next to your sub-woofer with test instruments and tools I'm going to be so basic as to almost be insulting. However, If I were there, I would be testing these things.
Normally, when one has a catastrophic failure. i.e. no power, and no indication of power present one starts with the power supply. And that starts at the power company.
1st Determine if there is power in the actual outlet that the unit is plugged into. I have found that when installing a sub-woofer on a two plug wall outlet, for example, it might be plugged into a plug intended for a floor lamp. and is turned on and off by a wall switch. Many residences have this feature. It is usually one of the two plugs in an outlet. So you have to test the actual physical outlet. If the outlet is off, check the light switches. If there is no power to the outlet, check the household circuit breaker.
Let's assume that everything works, so far.
The next thing to do is check the internal fuse with a meter. If you don't have one, pick up a multimeter from Radio Shack or Walmart for less than $20.00 or Harbor Freight for less than $7.00
If the fuse looks good but checks out bad (sometime happens) replace it with A FUSE OF THE SAME VALUE. DON'T STICK IN A PIECE OF ALUMINUM FOIL OR BYPASS THE FUNCTION AND PURPOSE OF THE FUSE. The fuse costs a dollar, at the most, the Sub-Woofer costs $800.00 at the most.
OK, so now you have either a working sub-woofer, or an elegant paper weight.
If it is still being a paper weight, contact mission to locate an authorized service company. This piece of equipment in not designed to be user servicable
Here is their link below,
I hope this helps,
Best Regards,

Jan 20, 2011 | Mission M5AS Subwoofer

1 Answer

The lights do not go on at all, it does not turn on

It may be the power supply fuse. The fuse is a "2amp Type T or slo-blo 250v" if you live in north america. If your electrical current is 230v like in europe the fuse you need is "1.25amp Type T or slo blo 250v". You will need to unplug the unit from the wall outlet, unplug all cables, and set the unit on a padded surface. Remove the 10 screws holding the amplifier to the sub box and remove the amp assembly from the box. At the bottom of the circuit board is a glass fuse, gently remove that fuse and inspect it for obvious signs, like dark burn spots. If you can, check it for continuity, or just replace it. Also before going through this check the outlet that the sub is plugged into for power.

May 16, 2010 | JBL PB10 Subwoofer

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Loud hum out of BaseCube 12 subwoofer

Actually I"m having the same problem. It is most probably the capacitors on the power supply internally. they are known to dry out and go back. cheap easy fix by a competent electronics repair facility. Also Cambridge will fix it for $75 plus shipping

Apr 20, 2010 | Cambridge Soundworks BassCube 12 Speaker

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Subwoofer continuous buzz/signal noise

I just bought mine yesterday and have the same problem... did you find a solution (other than throwing it out the window)?

Nov 18, 2009 | Bose Acoustimass 15 System

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Bought a used Martin Logan Dynamo subwoofer a couple days ago and have a very loud hum when the ac cord is plugged in, even if the speaker is not connected to an audio source. The "hum" can be heard in any...

Neither the amp or the sub have grounded power cords.

I have discovered the ML Dynamo takes about 30 minutes to switch to standby in auto mode.

With speaker level inputs connected to the Onkyo A807 amp, both units powered from the same wall outlet, Dynamo sub on Auto, the sub hums for about half an hour after the Onkyo is switched off, then the sub goes quiet. Not so good.

I connected a bonding wire between the two units on 3_7_09. If I smoked some old audio gear I could just look at that as an opportunity, right?

Works fine. Now I have the ML powered from the wall and working normally.

Jun 30, 2009 | Dynamo MartinLogan Subwoofer Speaker

1 Answer

RCA 10'' Home subwoofer powers up but no sound

  • Although most of my background is in car audio & acoustics, I did have a thought or two about some tests you can do.

DO THIS AT YOUR OWN RISK OF ELECTROCUTION - Have you tried checking the speaker terminals with a voltmeter while the unit is plugged in? I,ve seen solid state amps (both car & home amps do this) kind of lock up and send constant line voltage to the sub. In some cases the sub snaps instantly, high power subs may not. I've used power from a 110v wall outlet to show off some high SPL systems I've built (very painful 60hz earthquakes). So be careful at the sub terminal it may have some voltage at it.-(If it does you probably know the rest of my answer.)- If so the sub will most likely be wasted and fused voice coils are also common when this happens.
If everything checks out okay there (make sure to check if the subs resistance is at spec while you're there) use the voltmeter and start poking around the audio side of things both on the powered sub and RCA's. You may even find a easy problem on RCA cables. Also can/did you plug the RCA's into a known source, to check their output. Most home audio is 1.5v max but some can go as high as 8v max or so. Also don't be afraid to check the simplest of items like source buttons, specifically the tape monitor buttons. My equipment has these such tape functions with little or no indication as to weather or not they are active, and not being plugged into anything you get no sound. I hope I gave some idea's you may not have tried, your fellow Audiophile-

Mar 31, 2009 | RCA Speakers & Subwoofers

1 Answer


Please check your model number, I can not find it on the JVC service website.

This is a powered sub-woofer I think. You need to have a thick black cord that connects the sub to the head unit. Then the satellite speakers get connected to the speaker jacks on the sub-woofer box. The sub-woofer should also be plugged into an A/C outlet on the wall.

The speaker outputs are labeled right there where you connect the speaker wires. You should see a red and black connector for each speaker and they are labeled "front right" "front left" "center" "rear right" "rear left".

If you do not have the thick black cord you need to connect the head unit with the sub-woofer, you can not use this system.

If you look at the head unit and give me the model number on it, I may be able to find the part you need. But I must have a good model number to work with, preferably from the head unit.


Nov 10, 2008 | JVC SPPWA670 Subwoofer

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