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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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hissing sound coming from behind woofer on one side AR11
On Jul 29, 12:43*pm, (GregS) wrote:
In article , Amanda Ripanykhazov wrote: On Jul 26, 4:11=A0am, "Arfa Daily" wrote: "Amanda Ripanykhazov" wrote in message .... On Jul 24, 7:21 am, bz wrote: Amanda Ripanykhazov wrote: Anyone know what this means? This hissing sound isnt constant, it is irregular: =A0It isnt related to the music or any movement of the co= ne or any signal put through it, though it doesnt happen when no sound = is put through the speaker. Frankly it sounds more mechancial than electronic (as if there is something behind there!) but as I say, it isnt related to whatever i= s coming through the speaker though it does increase and decrease with adjustment of the volume control. =A0Andit is louder than most signa= ls put through the woofer itself?? Is it indicative of some pot in the crossover needing cleaning or is there something else going on please? (I have seen reference to peop= le improving the sound of AR11s by bypassing the tone controls in the speaker completely). =A0This speaker is quite elderly and I would imagine that if it does use mechanical pots, they must be fairly dir= ty by now I know it is a silly question, but are you SURE that the hiss isn't coming out of your amplifier? (have you put a scope on the speaker lines or substituted either speak= er or amp?) =A0From your description, it isn't clear to me that you have eliminate= d the 'more obvious' possibility that your amplifier is putting out white noise, perhaps intermittently varying in amplitude.- Hide quoted text = - - Show quoted text - Yeah, switching one speaker pretty much solved that one. What, solved it as in proved that the amplifier *was* the cause, or solve= d it as in it wasn't ? Arfa- Hide quoted text - - Show quoted text - When I took out the speaker and put in another one, the hissing sound stopped? When I put the speaker *in again, the hissing sound started again I don't know if my question was ever answered. Where is the hissing comming from ? Behind speakers means behind the box. If you can't tell from listening, use a piece of tubing to get location. You can get it down to less than an inch. greg- Hide quoted text - - Show quoted text - I thought I made this point in the second posting by saying what I did to try to trace it by pushing in the woofer (you cant push in a tweeter that easily), the sound is coming from behind the woofer. |
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