hissing sound coming from behind woofer on one side AR11
in [Repair]
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From: Amanda Ripanykhazov on 31 Jul 2010 11:04 On Jul 30, 5:41 pm, Meat Plow <mhyw...(a)yahoo.com> wrote: > On Fri, 30 Jul 2010 14:03:39 -0700, Amanda Ripanykhazov wrote: > > Thank you for your confidence everyone: If I wanted to wind everyone up, > > dont you think I would have found a funnier way of doing it than this? > > Not if you're just not too funny in the first place. > > > If someone can get me a way of posting a wav file to a NG, let me know > > and I will stick a microphone in front of the speaker and post whatever > > it records > > > Meanwhile I will take the speaker out and report back if/when I have a > > result > > But you've already subbed the speaker and the hiss went away or so I > thought I had previously read. Call me an old cynic and obviously I am not a technical expert but doesnt simple logic mandate that when you sub a speaker and the sound goes away, all it means is that (what I thought blindingly obvious from the symptoms and there being no apparent logical connection between the source and the hissing, which was why I posted here: Because "The problem is that you are describing something that doesn't seem to make any sense, or have any obvious explanation" so I wondered whether anyone had come across it before) the sound wasnt coming from the source? Or did I have to add that when i put the speaker back again, the sound came back?
From: William Sommerwerck on 31 Jul 2010 12:30 Call me an old cynic and obviously I am not a technical expert but doesnt simple logic mandate that when you sub a speaker and the sound goes away, all it means is that (what I thought blindingly obvious from the symptoms and there being no apparent logical connection between the source and the hissing, which was why I posted here: Because "The problem is that you are describing something that doesn't seem to make any sense, or have any obvious explanation" so I wondered whether anyone had come across it before) the sound wasnt coming from the source? Or did I have to add that when i put the speaker back again, the sound came back? Your speakers are passive devices. They cannot make any sort of sound on their own. If hissing is coming from one of them (but not the other, when driven from the same amp), the speaker must be therefore be the source of the hiss. But as there is nothing in the speaker that could, by itself, create sound, then the speaker must be altering or distorting its input to produce the hiss. However, you say that the presence or level of the hiss is not related to the program material. This makes no sense. The logical conclusion is that A: you are grossly mis-describing the symptoms, or B: this is a troll. I think it's B. I really don't have any more time for this tsuris/tsimmes. Take your pick.
From: Jamie on 31 Jul 2010 13:45 Amanda Ripanykhazov wrote: > On Jul 30, 5:41 pm, Meat Plow <mhyw...(a)yahoo.com> wrote: > >>On Fri, 30 Jul 2010 14:03:39 -0700, Amanda Ripanykhazov wrote: >> >>>Thank you for your confidence everyone: If I wanted to wind everyone up, >>>dont you think I would have found a funnier way of doing it than this? >> >>Not if you're just not too funny in the first place. >> >> >>>If someone can get me a way of posting a wav file to a NG, let me know >>>and I will stick a microphone in front of the speaker and post whatever >>>it records >> >>>Meanwhile I will take the speaker out and report back if/when I have a >>>result >> >>But you've already subbed the speaker and the hiss went away or so I >>thought I had previously read. > > > Call me an old cynic and obviously I am not a technical expert but > doesnt simple logic mandate that when you sub a speaker and the sound > goes away, all it means is that (what I thought blindingly obvious > from the symptoms and there being no apparent logical connection > between the source and the hissing, which was why I posted here: > Because "The problem is that you are describing something that doesn't > seem to make any sense, or have any obvious explanation" so I wondered > whether anyone had come across it before) the sound wasnt coming from > the source? Or did I have to add that when i put the speaker back > again, the sound came back? check for electrical devices adjacent to the speaker, inside and outside of the wall. Your speaker coil maybe in the path of an induced magnetic field from a device near by.. etc..
From: nesesu on 31 Jul 2010 15:25 On Jul 31, 9:30 am, "William Sommerwerck" <grizzledgee...(a)comcast.net> wrote: > Call me an old cynic and obviously I am not a technical expert but > doesnt simple logic mandate that when you sub a speaker and the > sound goes away, all it means is that (what I thought blindingly obvious > from the symptoms and there being no apparent logical connection > between the source and the hissing, which was why I posted here: > Because "The problem is that you are describing something that doesn't > seem to make any sense, or have any obvious explanation" so I wondered > whether anyone had come across it before) the sound wasnt coming from > the source? Or did I have to add that when i put the speaker back > again, the sound came back? > > Your speakers are passive devices. They cannot make any sort of sound on > their own. > > If hissing is coming from one of them (but not the other, when driven from > the same amp), the speaker must be therefore be the source of the hiss. But > as there is nothing in the speaker that could, by itself, create sound, then > the speaker must be altering or distorting its input to produce the hiss. > However, you say that the presence or level of the hiss is not related to > the program material. > > This makes no sense. The logical conclusion is that A: you are grossly > mis-describing the symptoms, or B: this is a troll. > > I think it's B. I really don't have any more time for this tsuris/tsimmes.. > Take your pick. There is a slight possibility that there is an issue with the crossover in this speaker that de-stabilizes the driving amplifier, causing an HF oscillation in the amp, yet the amp IS stable with the other speaker. I worked on an Pioneer amp that was marginally stable and would oscillate depending on the load. The clue it was oscillating was a 'sizzle' in the speaker and the overload lamp was always lit. Other than that it appeared to work fine to the owners old ears, although there was a slightly perceptable clipping distortion on louder passages. A slight adjustment of the R-C feedback in the amp returned the rock solid stability and eliminated the perceived 'hiss'. That system had been to two 'professional' shops; one said there was nothing wrong and the other said it could not be repaired. Neil S.
From: Arfa Daily on 31 Jul 2010 21:42
"Ron" <ron(a)lunevalleyaudio.com> wrote in message news:jKydnVWRZZH1kcnRnZ2dnUVZ7teonZ2d(a)bt.com... > On 31/07/2010 01:35, Arfa Daily wrote: > >> Also, the source sounds suspicious, you must admit ? I mean, dmanzaluni >> ? That must be "the man's a loony", mustn't it ? And the nic. >> Ripanykhazov. "Rippin' ya clothes off" maybe ? > > Rip her knickers off, Shirley ;) > -- Ah yes, Ron ! Well spotted ... :-) Arfa |