hissing sound coming from behind woofer on one side AR11
in [Repair]
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From: Phil Allison on 21 Jul 2010 22:15 "Amanda Ripanykhazov" And for some reason I have never understood, the surrounds in those old speakers aren't made of rubber which disintegrates so that isnt a problem ** The AR11 woofer has a FOAM surround - all foam surrounds disintegrate after about 10 to 20 years. Most woofers made these days use rubber (aka roll) surrounds which have an indefinite life excepting the odd case of adhesive failure. ..... Phil
From: bz on 24 Jul 2010 07:21 Amanda Ripanykhazov wrote: > Anyone know what this means? This hissing sound isnt constant, it is > irregular: It isnt related to the music or any movement of the cone > 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 is > coming through the speaker though it does increase and decrease with > adjustment of the volume control. Andit is louder than most signals > 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 people > improving the sound of AR11s by bypassing the tone controls in the > speaker completely). This speaker is quite elderly and I would > imagine that if it does use mechanical pots, they must be fairly dirty > 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 speaker or amp?) From your description, it isn't clear to me that you have eliminated the 'more obvious' possibility that your amplifier is putting out white noise, perhaps intermittently varying in amplitude.
From: Amanda Ripanykhazov on 25 Jul 2010 21:09 On Jul 24, 7:21 am, bz <WQAHBGMXS...(a)spammotel.com> wrote: > Amanda Ripanykhazov wrote: > > Anyone know what this means? This hissing sound isnt constant, it is > > irregular: It isnt related to the music or any movement of the cone > > 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 is > > coming through the speaker though it does increase and decrease with > > adjustment of the volume control. Andit is louder than most signals > > 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 people > > improving the sound of AR11s by bypassing the tone controls in the > > speaker completely). This speaker is quite elderly and I would > > imagine that if it does use mechanical pots, they must be fairly dirty > > 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 speaker > or amp?) > > From your description, it isn't clear to me that you have eliminated 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.
From: Arfa Daily on 26 Jul 2010 04:11 "Amanda Ripanykhazov" <dmanzaluni(a)googlemail.com> wrote in message news:8f36b444-2b05-4f98-85e1-d79583ce9c63(a)g19g2000yqc.googlegroups.com... > On Jul 24, 7:21 am, bz <WQAHBGMXS...(a)spammotel.com> wrote: >> Amanda Ripanykhazov wrote: >> > Anyone know what this means? This hissing sound isnt constant, it is >> > irregular: It isnt related to the music or any movement of the cone >> > 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 is >> > coming through the speaker though it does increase and decrease with >> > adjustment of the volume control. Andit is louder than most signals >> > 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 people >> > improving the sound of AR11s by bypassing the tone controls in the >> > speaker completely). This speaker is quite elderly and I would >> > imagine that if it does use mechanical pots, they must be fairly dirty >> > 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 speaker >> or amp?) >> >> From your description, it isn't clear to me that you have eliminated 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 solved it as in it wasn't ? Arfa
From: Amanda Ripanykhazov on 29 Jul 2010 08:25
On Jul 26, 4:11 am, "Arfa Daily" <arfa.da...(a)ntlworld.com> wrote: > "Amanda Ripanykhazov" <dmanzal...(a)googlemail.com> wrote in message > > news:8f36b444-2b05-4f98-85e1-d79583ce9c63(a)g19g2000yqc.googlegroups.com... > > > > > > > On Jul 24, 7:21 am, bz <WQAHBGMXS...(a)spammotel.com> wrote: > >> Amanda Ripanykhazov wrote: > >> > Anyone know what this means? This hissing sound isnt constant, it is > >> > irregular: It isnt related to the music or any movement of the cone > >> > 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 is > >> > coming through the speaker though it does increase and decrease with > >> > adjustment of the volume control. Andit is louder than most signals > >> > 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 people > >> > improving the sound of AR11s by bypassing the tone controls in the > >> > speaker completely). This speaker is quite elderly and I would > >> > imagine that if it does use mechanical pots, they must be fairly dirty > >> > 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 speaker > >> or amp?) > > >> From your description, it isn't clear to me that you have eliminated 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 solved > 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 |