Impedance
 

Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of the
speakers cutting out occasionally but it doesn't seem to be wiring. Could it
be the old volume pot or caused by the 4 ohm speakers running of an 8 ohm
amp?

Impedance
 

On Sun, 29 Oct 2006 00:36:01 +0100, "Doki" wrote:

Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of the
speakers cutting out occasionally but it doesn't seem to be wiring. Could it
be the old volume pot or caused by the 4 ohm speakers running of an 8 ohm
amp?

Yes and yes :_)

Impedance
 

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of the
speakers cutting out occasionally but it doesn't seem to be wiring. Could
it be the old volume pot or caused by the 4 ohm speakers running of an 8
ohm amp?


Do you run the amp flat out for hours on end?

Does the amp get silly hot?

Do the speakers cut in and out if you wriggle the volume comtrol backwards
and forwards?

Impedance
 

In article ,
Doki wrote:
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of
the speakers cutting out occasionally but it doesn't seem to be wiring.
Could it be the old volume pot or caused by the 4 ohm speakers running
of an 8 ohm amp?

Most quoted amplifier load and speaker impedances are nominal - speakers
vary in impedance with frequency.

Easy way to check if the load is too low for the amp is to wire the
speakers in series and connect to the suspect channel only, ans see it it
still occurs. But my guess is the fault is elsewhere.

--
*Sleep with a photographer and watch things develop

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

Impedance
 

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of the
speakers cutting out occasionally but it doesn't seem to be wiring. Could
it be the old volume pot or caused by the 4 ohm speakers running of an 8
ohm amp?

**The volume pot, output relay (if it exists) or a dry solder joint
somewhere. Impedance mismatches would cause BOTH channels to shut down.


--
Trevor Wilson
www.rageaudio.com.au



--
Posted via a free Usenet account from http://www.teranews.com

Impedance
 

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of the
speakers cutting out occasionally but it doesn't seem to be wiring. Could
it be the old volume pot or caused by the 4 ohm speakers running of an 8
ohm amp?
Amplifier fault or damaged speaker wiring - check wiring for intermittent
shorts - look at connections on amp & speaker.
Regards Mike.

Impedance
 

"Keith G" wrote in message
...

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of
the speakers cutting out occasionally but it doesn't seem to be wiring.
Could it be the old volume pot or caused by the 4 ohm speakers running of
an 8 ohm amp?


Do you run the amp flat out for hours on end?

Nope. Does get left on with no input sometimes. Ran the same speakers flat
out on an Arcam amp of the same wattage and blew the foams out of the
speakers, but the amp was perfectly happy.

Does the amp get silly hot?

Doesn't seem to, but does get warm.

Do the speakers cut in and out if you wriggle the volume comtrol backwards
and forwards?

Not tried it. It's my bird's setup and I've never heard it do it.

Impedance
 

"Doki" wrote in message
...

"Keith G" wrote in message
...

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of
the speakers cutting out occasionally but it doesn't seem to be wiring.
Could it be the old volume pot or caused by the 4 ohm speakers running
of an 8 ohm amp?


Do you run the amp flat out for hours on end?

Nope. Does get left on with no input sometimes. Ran the same speakers flat
out on an Arcam amp of the same wattage and blew the foams out of the
speakers, but the amp was perfectly happy.

Does the amp get silly hot?

Doesn't seem to, but does get warm.

Do the speakers cut in and out if you wriggle the volume comtrol
backwards and forwards?

Not tried it. It's my bird's setup and I've never heard it do it.



OK. leaves you two options AFAICS.....

1) Have the whole house rewired and see if it still does it...

2) Go mad, lob the amp out and get another one...

Impedance
 

"Keith G" wrote in message
...

"Doki" wrote in message
...

"Keith G" wrote in message
...

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of
the speakers cutting out occasionally but it doesn't seem to be wiring.
Could it be the old volume pot or caused by the 4 ohm speakers running
of an 8 ohm amp?


Do you run the amp flat out for hours on end?

Nope. Does get left on with no input sometimes. Ran the same speakers
flat out on an Arcam amp of the same wattage and blew the foams out of
the speakers, but the amp was perfectly happy.

Does the amp get silly hot?

Doesn't seem to, but does get warm.

Do the speakers cut in and out if you wriggle the volume comtrol
backwards and forwards?

Not tried it. It's my bird's setup and I've never heard it do it.



OK. leaves you two options AFAICS.....

1) Have the whole house rewired and see if it still does it...

2) Go mad, lob the amp out and get another one...

3) Attack the pot with a bucket of contact cleaner or swap it?

Impedance
 

"Doki" wrote in message
...

"Keith G" wrote in message
...

"Doki" wrote in message
...

"Keith G" wrote in message
...

"Doki" wrote in message
...
Got an old Aiwa (IIRC) amp driving some 4 ohm speakers. Getting one of
the speakers cutting out occasionally but it doesn't seem to be
wiring. Could it be the old volume pot or caused by the 4 ohm speakers
running of an 8 ohm amp?


Do you run the amp flat out for hours on end?

Nope. Does get left on with no input sometimes. Ran the same speakers
flat out on an Arcam amp of the same wattage and blew the foams out of
the speakers, but the amp was perfectly happy.

Does the amp get silly hot?

Doesn't seem to, but does get warm.

Do the speakers cut in and out if you wriggle the volume comtrol
backwards and forwards?

Not tried it. It's my bird's setup and I've never heard it do it.



OK. leaves you two options AFAICS.....

1) Have the whole house rewired and see if it still does it...

2) Go mad, lob the amp out and get another one...

3) Attack the pot with a bucket of contact cleaner or swap it?




Hookay.....

That's also valid...!!

;-)