Psb alpha subsonic 1 is not working - PSB Alpha Sub Sonic 1 Speaker

The fuse is integrated in hte AC socket. You'll need a small screw driver to pry up the part that talks about the power requirements. Check the online manuals for more details.

The protection only should come on, when the power amplifier has to give more current than it can deliver. (electronic fuse)
If in the music is a lot of subsonic, sound, so low you can't hear and your speakers can't produce, this could cause the problem. Normal CD players will cut of all frequencies beneath 20 Hz, but it could be your PC is giving everything from 1 Hz and above.
I would certainly try to play some music over a CD player and check if that would solve your problem. Not sure if that works, what you could do to suppress the sub sonic in the computer music.

Make sure you the plug eorks before you do anything. Plug in a lamp or something. The fuse is inside where you plug the input.

try using different wires

the user manual for this speaker is not avail on line for download, but u can request a copy from PSB SPEAKERS at the web link below by email.

http://www.psbspeakers.com/contact

You can also call them at:
Tel: (905) 831-6555 • Fax: (905) 837-6357

You can Hook the sub up to the b speaker channel

Had this same problem with a Yamaha sub. Unfortunately it's the amp section in the sub. If they can't fix it in the shop (problem is they don't leave it on long enough for the problem to return), the only option is replacement. I buy exclusively on AmEx cards, because they cover this kind of stuff - an additional 1 year warranty on anything you buy.

The subsonic filter is to help your system's overall performance by blocking frequencies that your subwoofer cannot effectively produce. For example, if you have a single 10 inch sub, it's not likely to be able to produce sound much lower than 60-80Hz with any respectable volume. If you have the subsonic filter on and set to 60Hz, it will prevent a 40Hz tone from being delivered to the sub. If the subsonic filter is turned off, your sub will get everything, and it will try to produce every sound. If it gets a 40Hz tone, it will make the sub work extra hard without any audible noise. It'll just degrade the overall so the answer to "shoud the subsonic filter stay off" would be "it depends on your system" but in most cases, you should keep it on, and set it to the low end of your subwoofer or woofer range. This also applies to filters on mids and highs.

Check the power cable.

Others have had similar problems with the amp on this model. There is probably a circuit design error which causes some components to blow and as far as I've read, fixing it (or replacing the fuse) won't make the problem go away for long. Try contacting PSB or the retailer.