hissing sound coming from behind woofer on one side AR11

[Amanda Ripanykhazov]

On Jul 26, 4:11 am, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:

"Amanda Ripanykhazov" <dmanzal...@googlemail.com> wrote in message

news:8f36b444-2b05-4f98-85e1-d79583ce9c63@g19g2000yqc.googlegroups.com...





On Jul 24, 7:21 am, bz <WQAHBGMXS...@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

 

[Arfa Daily]

"Amanda Ripanykhazov" <dmanzaluni@googlemail.com> wrote in message
news:7b33e37c-d03a-4938-aa3a-761ada39d91e@5g2000yqz.googlegroups.com...

On Jul 26, 4:11 am, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:
"Amanda Ripanykhazov" <dmanzal...@googlemail.com> wrote in message

news:8f36b444-2b05-4f98-85e1-d79583ce9c63@g19g2000yqc.googlegroups.com...





On Jul 24, 7:21 am, bz <WQAHBGMXS...@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

I don't suppose that you are just comparing apples and oranges here, are you
? All amplifiers hiss to some degree - generally, although not always,
semiconductor ones more so than tube ones. It's not unusual for one channel
to be a little noisier than the other, so you might hear it more on one side
than the other. If you swap a different speaker onto the hissy channel, the
one that you are swapping in, might not have as good a frequency response as
the one you are taking off, so you might not hear the hiss, and think that
you've cured a problem that's not really there in the first place. I guess
you could also have a defective tweeter or crossover in the speaker that you
*think* is good, because it doesn't hiss, when in fact it is actually bad,
because it's not managing to reproduce the hiss that is a characteristic of
the amp, whereas the other one that you think is bad *is* reproducing it.

If you see what I mean ...

Can you hear hiss in headphones plugged into it ? If so, is it equal between
channels. Does it change depending on what input you have selected on the
amp ? Have you tried swapping the speakers that are always connected to the
system, between channels, rather than swapping in different speakers of
possibly unknown condition and specification. One thing at a time, is the
way forward with this sort of 'problem'

Arfa

 

[GregS]

In article <7b33e37c-d03a-4938-aa3a-761ada39d91e@5g2000yqz.googlegroups.com>, Amanda Ripanykhazov <dmanzaluni@googlemail.com> wrote:

On Jul 26, 4:11=A0am, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:
"Amanda Ripanykhazov" <dmanzal...@googlemail.com> wrote in message

news:8f36b444-2b05-4f98-85e1-d79583ce9c63@g19g2000yqc.googlegroups.com...





On Jul 24, 7:21 am, bz <WQAHBGMXS...@spammotel.com> 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

 

[Amanda Ripanykhazov]

On Jul 29, 12:43 pm, zekfr...@zekfrivolous.com (GregS) wrote:

In article <7b33e37c-d03a-4938-aa3a-761ada39d...@5g2000yqz.googlegroups.com>, Amanda Ripanykhazov <dmanzal...@googlemail.com> wrote:





On Jul 26, 4:11=A0am, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:
"Amanda Ripanykhazov" <dmanzal...@googlemail.com> wrote in message

news:8f36b444-2b05-4f98-85e1-d79583ce9c63@g19g2000yqc.googlegroups.com....

On Jul 24, 7:21 am, bz <WQAHBGMXS...@spammotel.com> 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.

 

[Arfa Daily]

"Amanda Ripanykhazov" <dmanzaluni@googlemail.com> wrote in message
news:c1be9778-423f-4f2f-8a20-49b444da7375@j9g2000yqn.googlegroups.com...

On Jul 29, 12:43 pm, zekfr...@zekfrivolous.com (GregS) wrote:
In article
7b33e37c-d03a-4938-aa3a-761ada39d...@5g2000yqz.googlegroups.com>, Amanda
Ripanykhazov <dmanzal...@googlemail.com> wrote:





On Jul 26, 4:11=A0am, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:
"Amanda Ripanykhazov" <dmanzal...@googlemail.com> wrote in message

news:8f36b444-2b05-4f98-85e1-d79583ce9c63@g19g2000yqc.googlegroups.com...

On Jul 24, 7:21 am, bz <WQAHBGMXS...@spammotel.com> 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.

I'm thinking now that this is a windup. Looking at the the account that this
has come from.

dmanzaluni ?

Yes, I think that's maybe true ...

Arfa

 

[William Sommerwerck]

My reply to the original post was something like
"check to see if there is a snake behind the speaker."

I will sometimes reject as a troll a posting that everyone else accepts,
simply because it doesn't "ring true".

Most people do such a bad job of describing what's going on, that a
perfectly legitimate (though odd) situation can come out sounding quite
phony.

I'm starting to think this is a fake.

 

[Meat Plow]

On Fri, 30 Jul 2010 09:05:54 +0100, Arfa Daily wrote:

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.

I'm thinking now that this is a windup. Looking at the the account that
this has come from.

dmanzaluni ?

Yes, I think that's maybe true ...

Arfa

My reply to the original post was something like "check to see if there
is a snake behind the speaker."

 

[William Sommerwerck]

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?

You'd be amazed at some of the stupid stuff you see in UseNet groups. I've
never seen any of these that were actually funny.

The problem is that you are describing something that doesn't seem to make
any sense, or have any obvious explanation. This quite naturally makes
people suspicious.

 

[William Sommerwerck]

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.

And no one here is aware of a "mechanism" that causes speakers to produce
hissing sounds on their own, especially when you say the sound is not
related to the program material or its volume.

 

[Meat Plow]

On Fri, 30 Jul 2010 07:29:02 -0700, William Sommerwerck wrote:

My reply to the original post was something like "check to see if there
is a snake behind the speaker."

I will sometimes reject as a troll a posting that everyone else accepts,
simply because it doesn't "ring true".

Most people do such a bad job of describing what's going on, that a
perfectly legitimate (though odd) situation can come out sounding quite
phony.

I'm starting to think this is a fake.

I knew it from the start. It's in my blood

 

[Amanda Ripanykhazov]

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?

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

 

[Meat Plow]

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.

 

[Arfa Daily]

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
news:i2vi0a$pf1$1@news.eternal-september.org...

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?

You'd be amazed at some of the stupid stuff you see in UseNet groups. I've
never seen any of these that were actually funny.

The problem is that you are describing something that doesn't seem to make
any sense, or have any obvious explanation. This quite naturally makes
people suspicious.

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 ?

Dunno. Sorry if I'm being unfair to you, but the more I look at this, the
more it doesn't make any sense, and the more it begins to look like a usenet
windup ...

Arfa

 

[Meat Plow]

On Fri, 30 Jul 2010 15:01:33 -0700, William Sommerwerck wrote:

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.

And no one here is aware of a "mechanism" that causes speakers to
produce hissing sounds on their own, especially when you say the sound
is not related to the program material or its volume.

Especially if it is just a passive enclosure. Now a woofer with a built
in amp is an entirely different story.

 

[William Sommerwerck]

Dunno. Sorry if I'm being unfair to you, but the more I look
at this, the more it doesn't make any sense, and the more
it begins to look like a usenet windup ...

Of course, if it is true, we might read the following in the newspaper...


Woman killed by poisonous snake

Miss so-and-so was killed yesterday when bitten by a viper hiding behind one
of her loudspeakers. The animal had curled up there for warmth, and had
attracted her attention by making random hissing noises when music was
played.

 

[Ron]

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
--
I am using the free version of SPAMfighter.
We are a community of 7 million users fighting spam.
SPAMfighter has removed 1609 of my spam emails to date.
Get the free SPAMfighter here: http://www.spamfighter.com/len

The Professional version does not have this message

 

[William Sommerwerck]

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.

 

[Amanda Ripanykhazov]

On Jul 30, 5:41 pm, Meat Plow <mhyw...@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?

 

[Jamie]

Amanda Ripanykhazov wrote:

On Jul 30, 5:41 pm, Meat Plow <mhyw...@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..

 

[nesesu]

On Jul 31, 9:30 am, "William Sommerwerck" <grizzledgee...@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.