I'm trying to mend the intercom in a friend's flat. There are three flats and my friend can hear what visitors say, but the visitors can't hear what she says. It's the same for each flat.

It seems that the speaker is faulty in the unit outside with the buttons on it.

I have removed the speaker and it's 70mm across and says 0.5 watts and 16 ohms. It's a mylar cone one.

Will 8 ohm and 1.5 watts be ok as it's the nearest I can seem to find online?

On Saturday, February 22, 2014 8:50:34 PM UTC, Murmansk wrote:

I'm trying to mend the intercom in a friend's flat. There are three flats and my friend can hear what visitors say, but the visitors can't hear what she says. It's the same for each flat.
It seems that the speaker is faulty in the unit outside with the buttons on it.
I have removed the speaker and it's 70mm across and says 0.5 watts and 16 ohms. It's a mylar cone one.
Will 8 ohm and 1.5 watts be ok as it's the nearest I can seem to find online?

It probably will. If not the intercom amp will die.


NT

On 22/02/2014 20:50, Murmansk wrote:
I'm trying to mend the intercom in a friend's flat. There are three flats and my friend can hear what visitors say, but the visitors can't hear what she says. It's the same for each flat.

It seems that the speaker is faulty in the unit outside with the buttons on it.

I have removed the speaker and it's 70mm across and says 0.5 watts and 16 ohms. It's a mylar cone one.

Will 8 ohm and 1.5 watts be ok as it's the nearest I can seem to find online?


I suppose that the speaker has to be the prime suspect, but there are
lots of things which it *could* be. Can you test the speaker by removing
it and connecting it to another sound source (HiFi system, etc.)?

If it isn't the speaker, it could be a wiring problem.

It could *even* be a problem with all 3 of the handsets in the flats. If
they're like the ones in my holiday flat[1], the receiver rest operates
two springy contacts[2] - one for transmit and one for receive - and if
these get dirty (or even a bit oxidised) it's quite common for one or
other function not to work. [If you part dismantle the handset, you can
unhook the springy contacts and clean them with the likes of a
manicure-type emery board].

[1] http://www.mills37.plus.com/Handset.JPG

[2] IIRC (I'm 100 miles away at the moment, so can't check) these are
short lengths (1" or so) of tight-wound small diameter coil springs
(similar to curtain wire), which make contact with a piece of stiff wire
- which is the common return for earpiece and microphone - when the
receiver is off-hook
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

In article ,
Murmansk wrote:
It seems that the speaker is faulty in the unit outside with the buttons
on it.

I have removed the speaker and it's 70mm across and says 0.5 watts and
16 ohms. It's a mylar cone one.

Will 8 ohm and 1.5 watts be ok as it's the nearest I can seem to find
online?

A speaker like that is easy to check. Examine for physical damage then
'wipe' a 1.5v cell across the terminals. You should see the cone move and
hear a click.

--
*The average person falls asleep in seven minutes *

Dave Plowman London SW
To e-mail, change noise into sound.

On 22/02/14 20:50, Murmansk wrote:
I'm trying to mend the intercom in a friend's flat. There are three flats and my friend can hear what visitors say, but the visitors can't hear what she says. It's the same for each flat.

It seems that the speaker is faulty in the unit outside with the buttons on it.

I have removed the speaker and it's 70mm across and says 0.5 watts and 16 ohms. It's a mylar cone one.

Will 8 ohm and 1.5 watts be ok as it's the nearest I can seem to find online?

Odd. because the speaker is also the microphone in most door phones.


--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

In message , The Natural Philosopher
writes
On 22/02/14 20:50, Murmansk wrote:
I'm trying to mend the intercom in a friend's flat. There are three
flats and my friend can hear what visitors say, but the visitors can't
hear what she says. It's the same for each flat.

It seems that the speaker is faulty in the unit outside with the
buttons on it.

I have removed the speaker and it's 70mm across and says 0.5 watts
and 16 ohms. It's a mylar cone one.

Will 8 ohm and 1.5 watts be ok as it's the nearest I can seem to find online?

Odd. because the speaker is also the microphone in most door phones.



In all the ones that I've fitted there has been a separate electret
mic'

I think it boils down to Murmansk having to do a bit of testing to be
sure.

Could the fault be in another flat? The system thinking that that flat
is trying to speak out and is thus muting the speaker and so stopping it
working for all the others too?

Have fun, especially with trying to get assistance from the other flat
owners :-)

--
Bill

In article ,
Arfa Daily wrote:
Blimey ! I don't know what pro gear you work on, but many of the mixers
and pro amps that I see, have no service info or help of any kind
available from their manufacturers. For sure, your Fenders and
Marshalls and so on have service info and parts available, but some of
them can be a bitch to work on from a 'mechanical' point of view. And
try persuading any info or parts out of Behringer ...

I'd guess Tony isn't classing the likes of Behringer as 'pro gear'. He'll
be thinking Neve, etc.

--
*Why does the sun lighten our hair, but darken our skin?

Dave Plowman London SW
To e-mail, change noise into sound.

In article , Dave Plowman (News)
scribeth thus
In article ,
Arfa Daily wrote:
Blimey ! I don't know what pro gear you work on, but many of the mixers
and pro amps that I see, have no service info or help of any kind
available from their manufacturers. For sure, your Fenders and
Marshalls and so on have service info and parts available, but some of
them can be a bitch to work on from a 'mechanical' point of view. And
try persuading any info or parts out of Behringer ...

I'd guess Tony isn't classing the likes of Behringer as 'pro gear'. He'll
be thinking Neve, etc.


Ummm not that difficult, one of their best designers lives opposite..

http://uk.linkedin.com/in/martinhartleyjones
--
Tony Sayer

Thanks for those responses.

I contacted a company that specialises in mending intercoms and is based in London - intercomsrus.com - they said it would be the speaker and that I'd be best not ordering one from them as their supplier charges a ridiculous £38. They suggested finding one myself for a few pounds.I thought this was very helpful and honest.

The intercom unit at the front door does indeed appear to have a separate microphone.

I've tried wiping a battery over the speaker terminals and the speaker is silent so it sounds like that's the culprit.

"tony sayer" wrote in message
...
In article , Dave Plowman (News)
scribeth thus
In article ,
Arfa Daily wrote:
Blimey ! I don't know what pro gear you work on, but many of the mixers
and pro amps that I see, have no service info or help of any kind
available from their manufacturers. For sure, your Fenders and
Marshalls and so on have service info and parts available, but some of
them can be a bitch to work on from a 'mechanical' point of view. And
try persuading any info or parts out of Behringer ...

I'd guess Tony isn't classing the likes of Behringer as 'pro gear'. He'll
be thinking Neve, etc.


Ummm not that difficult, one of their best designers lives opposite..

http://uk.linkedin.com/in/martinhartleyjones
--
Tony Sayer



Then perhaps you can ask him why his company has this policy of not helping
people who are professionally in the business of servicing this sort of
equipment ? At least one of the music shops that I do work for, has an
active policy of refusing to take the stuff in or selling it to his
customers, purely because he knows that he will not be able to help his
customer in a timely manner and at a sensible price, should the need arise.
I think that being so obstructive is a very negative thing, and the company
does themselves no favours by being like it. There are plenty of companies
at least as big as them - and possibly bigger - who adopt a much more
realistic approach to post-warranty service, and these will be the companies
that the shop recommends over Behringer every time ...

Arfa

In article , Arfa Daily
scribeth thus


"tony sayer" wrote in message
...
In article , Dave Plowman (News)
scribeth thus
In article ,
Arfa Daily wrote:
Blimey ! I don't know what pro gear you work on, but many of the mixers
and pro amps that I see, have no service info or help of any kind
available from their manufacturers. For sure, your Fenders and
Marshalls and so on have service info and parts available, but some of
them can be a bitch to work on from a 'mechanical' point of view. And
try persuading any info or parts out of Behringer ...

I'd guess Tony isn't classing the likes of Behringer as 'pro gear'. He'll
be thinking Neve, etc.


Ummm not that difficult, one of their best designers lives opposite..

http://uk.linkedin.com/in/martinhartleyjones
--
Tony Sayer



Then perhaps you can ask him why his company has this policy of not helping
people who are professionally in the business of servicing this sort of
equipment ?

Which company are you referring to Arfa?. Martin was at Neve from 75
thru 85 quite some time ago!...

Neve of old is now AMS-Neve a different company completely!..

Of did you mean,


www.rupertneve.com


At least one of the music shops that I do work for, has an
active policy of refusing to take the stuff in or selling it to his
customers, purely because he knows that he will not be able to help his
customer in a timely manner and at a sensible price, should the need arise.
I think that being so obstructive is a very negative thing, and the company
does themselves no favours by being like it. There are plenty of companies
at least as big as them - and possibly bigger - who adopt a much more
realistic approach to post-warranty service, and these will be the companies
that the shop recommends over Behringer every time ...

Arfa


--
Tony Sayer

In article ,
Arfa Daily wrote:
I'd guess Tony isn't classing the likes of Behringer as 'pro gear'. He'll
be thinking Neve, etc.


Ummm not that difficult, one of their best designers lives opposite..

http://uk.linkedin.com/in/martinhartleyjones
--
Tony Sayer



Then perhaps you can ask him why his company has this policy of not
helping people who are professionally in the business of servicing this
sort of equipment ?

The likes of Neve would have had no sales to the BBC etc if they wanted to
keep their schematics as some sort of secret. Since broadcasters and
larger recording studios normally keep maintenance and repair 'in house'.
They can't risk equipment (like a mixing desk in a studio) being down for
the time it would take to send something off for repair, or get a factory
man in.

At least one of the music shops that I do work for,
has an active policy of refusing to take the stuff in or selling it to
his customers, purely because he knows that he will not be able to help
his customer in a timely manner and at a sensible price, should the need
arise. I think that being so obstructive is a very negative thing, and
the company does themselves no favours by being like it. There are
plenty of companies at least as big as them - and possibly bigger - who
adopt a much more realistic approach to post-warranty service, and these
will be the companies that the shop recommends over Behringer every time
...

Behringer almost fits into the disposable bracket. ;-)

I recently contacted Linn wanting to buy a copy of the schematic for a
long defunct piece of equipment. Only to be told they only supply such
things to authorised dealers. My feeling about that is they don't want the
great unwashed to find out easily just how little their products cost to
make. ;-)

--
*Taxation WITH representation ain't much fun, either.

Dave Plowman London SW
To e-mail, change noise into sound.

"tony sayer" wrote in message
news
In article , Arfa Daily
scribeth thus


"tony sayer" wrote in message
...
In article , Dave Plowman (News)
scribeth thus
In article ,
Arfa Daily wrote:
Blimey ! I don't know what pro gear you work on, but many of the
mixers
and pro amps that I see, have no service info or help of any kind
available from their manufacturers. For sure, your Fenders and
Marshalls and so on have service info and parts available, but some of
them can be a bitch to work on from a 'mechanical' point of view. And
try persuading any info or parts out of Behringer ...

I'd guess Tony isn't classing the likes of Behringer as 'pro gear'.
He'll
be thinking Neve, etc.


Ummm not that difficult, one of their best designers lives opposite..

http://uk.linkedin.com/in/martinhartleyjones
--
Tony Sayer



Then perhaps you can ask him why his company has this policy of not
helping
people who are professionally in the business of servicing this sort of
equipment ?

Which company are you referring to Arfa?. Martin was at Neve from 75
thru 85 quite some time ago!...

Neve of old is now AMS-Neve a different company completely!..

Of did you mean,


www.rupertneve.com


At least one of the music shops that I do work for, has an
active policy of refusing to take the stuff in or selling it to his
customers, purely because he knows that he will not be able to help his
customer in a timely manner and at a sensible price, should the need
arise.
I think that being so obstructive is a very negative thing, and the
company
does themselves no favours by being like it. There are plenty of companies
at least as big as them - and possibly bigger - who adopt a much more
realistic approach to post-warranty service, and these will be the
companies
that the shop recommends over Behringer every time ...

Arfa


--
Tony Sayer


All at cross purposes here, I think. I spoke specifically of how difficult
it was getting service info out of Behringer as an example of a big company
that are unhelpful, and assumed that was who you were talking about when you
said that it was not so difficult as one of their designers lived across
the road ... I didn't realise that you were in fact referring to Neve, a
company of which I have no experience.

Sorry for any confusion. I need to read a bit more carefully ... :-\

Arfa

All at cross purposes here, I think. I spoke specifically of how difficult
it was getting service info out of Behringer as an example of a big company
that are unhelpful, and assumed that was who you were talking about when you
said that it was not so difficult as one of their designers lived across
the road ... I didn't realise that you were in fact referring to Neve, a
company of which I have no experience.

Ah!, they Rupert Neve that is or was, were building pro mixing desks for
all the big studios and broadcasters since 1970 odd.

Then Neve sold out/were amalgamated with AMS to become AMS-Neve.

Rupert Neve is still involved in his own company and started IIRC
Focusrite which is a similar sort of outfit to Behringer...

Sorry for any confusion. I need to read a bit more carefully ... :-\
..

Arfa


--
Tony Sayer

Hi Dave

On Sunday, 23 February 2014 15:22:21 UTC, Dave Plowman (News) wrote:
[...]
I recently contacted Linn wanting to buy a copy of the schematic for a

long defunct piece of equipment. Only to be told they only supply such

things to authorised dealers. My feeling about that is they don't want the

great unwashed to find out easily just how little their products cost to

make. ;-)

FWIW there is a fair number of Linn Schematics out there - I have a few myself, for things like the Valhalla. Keep hunting, I suggest...

Cheers
J^n

Then perhaps you can ask him why his company has this policy of not
helping people who are professionally in the business of servicing this
sort of equipment ?

The likes of Neve would have had no sales to the BBC etc if they wanted to
keep their schematics as some sort of secret. Since broadcasters and
larger recording studios normally keep maintenance and repair 'in house'.
They can't risk equipment (like a mixing desk in a studio) being down for
the time it would take to send something off for repair, or get a factory
man in.

Indeed.. I almost got a job as field service engineer there many years
ago now. It was put that if Madonna or Michael Jackson couldn't record
as a desk was down then hop onto the first Concorde out to wherever and
"sort it"!..

All the nice places mind, not like that other job a mate of min had
going to the Sudan and such like;(..



At least one of the music shops that I do work for,
has an active policy of refusing to take the stuff in or selling it to
his customers, purely because he knows that he will not be able to help
his customer in a timely manner and at a sensible price, should the need
arise. I think that being so obstructive is a very negative thing, and
the company does themselves no favours by being like it. There are
plenty of companies at least as big as them - and possibly bigger - who
adopt a much more realistic approach to post-warranty service, and these
will be the companies that the shop recommends over Behringer every time
...

Behringer almost fits into the disposable bracket. ;-)

Well what can you do with equipment like that from the service POV?

I recently contacted Linn wanting to buy a copy of the schematic for a
long defunct piece of equipment. Only to be told they only supply such
things to authorised dealers. My feeling about that is they don't want the
great unwashed to find out easily just how little their products cost to
make. ;-)


I wonder what Phil Addision would have to say on that;!!..

--
Tony Sayer

On Sunday, February 23, 2014 12:20:52 PM UTC, Murmansk wrote:
Thanks for those responses.
I contacted a company that specialises in mending intercoms and is based in London - intercomsrus.com - they said it would be the speaker and that I'd be best not ordering one from them as their supplier charges a ridiculous £38. They suggested finding one myself for a few pounds.I thought this was very helpful and honest.
The intercom unit at the front door does indeed appear to have a separate microphone.
I've tried wiping a battery over the speaker terminals and the speaker is silent so it sounds like that's the culprit.

It is. £38!! Any old 15 or 16 ohm speaker than physically fits should do.


NT

On 23/02/14 22:26, wrote:
On Sunday, February 23, 2014 12:20:52 PM UTC, Murmansk wrote:
Thanks for those responses.
I contacted a company that specialises in mending intercoms and is based in London - intercomsrus.com - they said it would be the speaker and that I'd be best not ordering one from them as their supplier charges a ridiculous £38. They suggested finding one myself for a few pounds.I thought this was very helpful and honest.
The intercom unit at the front door does indeed appear to have a separate microphone.
I've tried wiping a battery over the speaker terminals and the speaker is silent so it sounds like that's the culprit.

It is. £38!! Any old 15 or 16 ohm speaker than physically fits should do.



car boot sale and get 30 old tranny radios for a 5ver

NT



--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

On Sunday, February 23, 2014 2:00:40 PM UTC, Arfa Daily wrote:
"tony sayer" wrote in message

...

In article , Dave Plowman (News)

scribeth thus

In article ,

Arfa Daily wrote:

Blimey ! I don't know what pro gear you work on, but many of the mixers

and pro amps that I see, have no service info or help of any kind

available from their manufacturers. For sure, your Fenders and

Marshalls and so on have service info and parts available, but some of

them can be a bitch to work on from a 'mechanical' point of view. And

try persuading any info or parts out of Behringer ...



I'd guess Tony isn't classing the likes of Behringer as 'pro gear'. He'll

be thinking Neve, etc.





Ummm not that difficult, one of their best designers lives opposite..



http://uk.linkedin.com/in/martinhartleyjones

--

Tony Sayer







Then perhaps you can ask him why his company has this policy of not helping

people who are professionally in the business of servicing this sort of

equipment ? At least one of the music shops that I do work for, has an

active policy of refusing to take the stuff in or selling it to his

customers, purely because he knows that he will not be able to help his

customer in a timely manner and at a sensible price, should the need arise.

I think that being so obstructive is a very negative thing, and the company

does themselves no favours by being like it. There are plenty of companies

at least as big as them - and possibly bigger

The Music Group which is Uli Behringer`s parent group for all the off shoots also includes Klark Teknik and Midas, not sure there is currently a bigger single group in audio.

The X32 digital mixer appears to be going down well with even pro users and Behringer trying to do a bit of a Ryan Air style u turn on customer service issues...


- who adopt a much more

realistic approach to post-warranty service, and these will be the companies

that the shop recommends over Behringer every time ...



Arfa

In article ,
The Natural Philosopher wrote:
It is. £38!! Any old 15 or 16 ohm speaker than physically fits should
do.



car boot sale and get 30 old tranny radios for a 5ver

They're usually more like 40 ohm. So might be a bit too quiet. And may
not like the damp. Hence the original being Mylar.

--
*Fax is stronger than fiction *

Dave Plowman London SW
To e-mail, change noise into sound.

On Monday, February 24, 2014 11:21:20 AM UTC, Dave Plowman (News) wrote:
In article ,
The Natural Philosopher wrote:
It is. £38!! Any old 15 or 16 ohm speaker than physically fits should
do.


car boot sale and get 30 old tranny radios for a 5ver
They're usually more like 40 ohm. So might be a bit too quiet. And may
not like the damp. Hence the original being Mylar.

I used to reinforce/waterproof the cones for some uses. Its important to use something that remains to some degree flexible, humbrol enamels would break up when the thing endstopped, causing ongoing distortion. ISTR banana oil being good, but it was a long time ago. Whether the card & glue in the voicecoil will survive damp I cant be certain, but I have used basic speakers in damp places and got away with it.


NT

Dave Plowman (News) wrote:
In ,
The Natural wrote:
It is. £38!! Any old 15 or 16 ohm speaker than physically fits should
do.



car boot sale and get 30 old tranny radios for a 5ver

They're usually more like 40 ohm. So might be a bit too quiet. And may
not like the damp. Hence the original being Mylar.


If the coil is intact, it may be possible to free it up with some
cleaning.