My 221 Subwoofer speaker gets a loud humming especially after running them a while. I read a thread for AVS500's that solved the issue by replacing 1) The Power Supply condenser or 2) 6 polarised condensers on the sub-woofer circuit with non-polarised ones; it sounds like the same issue so is replacement the repair? Which condensers should I change if this is the case? (The circuit numbering is different to the AVS500).
You should replace the large Electrolytic(s) in the power supply. You should replace any other Electrolytic capacitor that the top is bulging or looks like there is something coming out of it.
Personally I would not recommend replacing any polarised capacitors with none polarised, unless you have seen an instruction from the Maker of the unit, which tells you to do so.
I recommend taking a look at the Bad Caps Forum for more information about Electrolytic Capacitors.
http://www.badcaps.net/forum
SOURCE: Sub Woofer does not work
hi there are fast checkings for you: Quick Connect Card http://www.alteclansing.com/downloads/641QCC.pdf manual: http://www.alteclansing.com/downloads/641_MAN.pdf is the system working fine exept the sub? my guess: the headphone jack works fine then the speakears are too if soo then the sub amp is bad or some connection is torn try opening the sub and see if everything is hooked right and if soo then the amp is the problem every electronics shop can fix this good luck
SOURCE: I'vebeen given an Altec Lansing
lost instructions on how to hook up. Large speaker makes static. Right speakers work great.
All colors match but can not find the proper jack for the black wire coming out of large speaker
I suspect this is the problem
SOURCE: power supply AVS500-A6860 fried
This one might work, but I'm not 100% sure on the connector:
http://cgi.ebay.com/AULT-041-0001-001-18VDC-1111MA-AC-ADAPTER_W0QQitemZ6741610952QQihZ002QQcategoryZ101265QQtcZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262
SOURCE: My subwoofer (Altec Lansing[AVS500]) is always makeing a thumping
You could only verify this by gaining access to the rear of the speaker but I suspect that the 'spider' has come unglued.
This is a device that surrounds the lower (inner) end of the cone to provide a second point of suspension; without this, the voice coil can slap against the side or bottom of the magnet structure.
I don't think a repair is an economical choice for these; repairs only make sense for 'professional' speakers that cost several hundred dollars to replace.
SOURCE: Subwoofer Emits a Buzzing Tone
The 2200 uF capacitor in the power supply has gone bad and the humming is a 60 Hz from the rectification of AC to 18 vDC. Either get a new power supply or take apart the power supply and replace the bad cap.
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