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Identifying T21 in a Paradigm PS-1000

I'm repairing a Paradigm Subwoofer PS-1000. I found that transistor T21 is shorted. Nothing identifyable on the transistor itself. I need to know what it is so I can finish repairs. I would appreciate any help since I can't get a service manual.

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SOURCE: PAradigm ps-1000 subwoofer

It turns out its most likely one of the resistors on the PCB on the amplifier plate.

My uncle has had the same problem and managed to replace the resistor and its working as normal now.

Posted on Nov 02, 2008

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SOURCE: Our ten year old paradigm ps 1200 subwoofer does

Disconnect the power, pull the amplifier out by undoing the screws that hold it in.
When you pull it out, look closely towards the top there is a little 1.8A fuse. It probably has blown.
Replace that and you should be back in business.

Posted on Sep 27, 2010

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What is the impedance of the 12" driver in this subwoofer


PS-1200 Specifications
Design
Single driver, DCBS™ system with high velocity resistive ports and built-in amplifier Amplifier High current, hybrid output, 130 watts RMS
Amplifier Features Powersaver auto-on/off, soft clipping, thermal protection Low Pass Filter Frequency Variable 50Hz-150Hz Low Frequency Driver 310 mm, carbon-fiber-reinforced composite cone, Apical™ former Low Frequency Extension 23 Hz (DIN) Sub / Sat Phase Alignment 0 - 180 Finishes Black Ash Inputs From A/V receiver/processor or Paradigm X-Series Control Unit or preamp left/right output; From receiver/amplifier speaker terminals or main/satellite speaker terminals Weight 68 lbs. (31 kg) Dimensions HxWxD 19.75" × 17" × 21"
(50cm × 43cm × 53cm)
Specifications are subject to change without notice.
© 2016 Paradigm Electronics Inc. Conditions of Use Privacy Policy Unauthorized Dealers WARNINGSouth Africa

Apr 26, 2016 | Paradigm PS 1200 Speaker

1 Answer

What would cause paradigm sub12 not to power on


The inside of a subwoofer isn't really a great place to put an amplifier, that that is what you have. These things do go bad from time to time.

You may be able to get it repaired, or you could replace the amp. You're looking for a "plate amp". Parts Express has a good selection:

Subwoofer Plate Amplifiers

Oct 14, 2015 | Paradigm Speakers & Subwoofers

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If it is a powered sub, the sub power supply may have failed. There might be an open fuse.

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I have a paradigm ps 1000.it powers on fine when i plug in the rca cable into thoe back of the sub into the low level input it humms supper loud. i tested my cable and used another one same thing. could...


It sounds like it has bad ground on the RCA input assembly, you should Ohm out the ground of the RCA jacks to see if they are all connected.
How about the sender side (the amplifier) ground?

Mar 09, 2011 | Paradigm PS1000 Speaker

1 Answer

Our ten year old paradigm ps 1200 subwoofer does not power up, although it is plugged in and properly connected to the receiver. Why is this? Is it a lost cause?


Disconnect the power, pull the amplifier out by undoing the screws that hold it in.
When you pull it out, look closely towards the top there is a little 1.8A fuse. It probably has blown.
Replace that and you should be back in business.

Sep 20, 2010 | Paradigm PS 1200 Speaker

1 Answer

PDR-10 subwoofer has no output. 120vac to unit is


I have exactly the same situation with my PDR-10. Paradigm techs were of no help, don't me to take it to a service centre which i did. Of course when it was there they plugged it in and it stayed on for a day and a half so no problem right? Get it home, nothing, plugged and replugged, got it on once but not for long. Opened up back, everything including fuse looks solid and fine....to naked eye anyhow.

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I have a ipod i would like to connect to my PS Series but i do not know how


Don't bother. A subwoofer will only reproduce the rumble (deep bass) end of the spectrum. You would still need other (full range) speakers for the rest of the frequencies.

But, if you must - get an adapter to convert the Ipod's headphone output to an RCA pair and jack it into the sub's inputs.

Dec 06, 2009 | Paradigm PS 1200 Speaker

2 Answers

PAradigm ps-1000 subwoofer


It turns out its most likely one of the resistors on the PCB on the amplifier plate.

My uncle has had the same problem and managed to replace the resistor and its working as normal now.

Jul 14, 2008 | Speakers & Subwoofers

1 Answer

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?

Dec 13, 2007 | Paradigm PS 1200 Speaker

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