I have a JBL S120PII Sub. Yesterday, I went to turn on the Sub, and the Power Switch just came off. I tried putting it back in, but to no avail. A couple pieces of aluminum also came out w/ the switch. I was wondering if there is somewhere I could take it to get it repaired. Aside from that, sub works perfectly. Although, at current, I have no way to turn the power on. Appreciate any help and guidance.
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Check and replace the power output MOSFETs [at the power amplifier circuit]. A damaged MOSFET can cause this continuous LED blinks. It is important to replace all the 4 MOSFETs at one time. Also, check for any further damaged to any other components too have occurred. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
First try to find the source of your problem. The easiest way would be to try your sub with a different audio source to see if the problem still occurs but is sounds more like there's a problem with the receiver.
Generally there is a left and right input. The sub is usually not in stereo, the frequences of the sub are more omni directional, and have no spattal placement in the stereo field. If there is only (1) input you can take either the left or right from the system and you should get the frequencies you need. In the even it is not working out quite right you may take the left and right and use some 1k to 4.7k 1/2 watt resistors connected to tie the left and right line output togeather to feed the sub.
i have same speakers try these setting and tell me what you think put phase at 180 and put switch on lfe mode not normal for some reason my sub plays louder on these setting verse phase on 0 and lfe switch on normal i have power on subwoofer a little more than half also set croosover to 80hz you will never touch it again