After turning on the woofer for an hour it starts clicking. what can be the problem?
I have a PS-12, and I had the exact same problem. The best I can tell, the amp is overheating. It's housed in what is more or less an airtight plastic enclosure, so there is no efficient way for heat to leave the amp as the electronic components heat up.
I don't know how old your PS-12 is, but mine started to click after about four years of reliable use. Perhaps older amps are more sensitive to overheating than when they're new.
Anyways, Here's how to fix it yourself, if you're feeling up to the task:
Disconnect the sub from your system and the wall. Remove the amp from the back of the unit (ten philips head wood screws around the edge of the control panel). Disconnect the amp from the speaker itself.
Next, remove the amp from its asphyxiating plastic enclosure (2 smaller philips head machine screws hold it on, one to the right of the LED power indicator, the other to the left of the power cord.
Now, the fun part. Take the empty plastic enclosure, and turn it into swiss cheese with a drill. I would recommend a large drill bit and as many holes as you feel comfortable with, because the whole point is to get as much airflow across the amp as possible. If you've got better tools to cut holes in the enclosure, feel free. Whatever it takes to open it up. Be careful of the speaker wire as you go.
As for a source of airflow, the speaker actually provides that itself. Just reassemble the whole mess, and your speaker should stop clicking.
If the amp continues to click, consider more holes. Oh, and don't worry if you crack the enclosure a little as you drill, it doesn't serve much of a functional or structural purpose, and you won't see the cracks again anyways. As long as you can screw it back onto the amp, you'll be fine.
Jan 30, 2010 |
Infinity PS-12 Subwoofer