HI, hope you'll indulge this newbie query.

I have a cambridge audio 540A and Sony SACD with Gale floor floor
standing speakers. For a while I've been convinced that one speaker/
channel - the right one - wasn't equal to the other - I cleaned out
all the connections, stripped back the cables again, even swapped the
speakers around, and still it sounds to my ears like one is weaker
than the other - am I imagining it? Or is there another explanation?
I've played around with the positioning and my listening position is
pretty much central.

Any comments appreciated,

Andy

On 11 Mar 2007 06:05:31 -0700, "andyjk70"
wrote:

HI, hope you'll indulge this newbie query.

I have a cambridge audio 540A and Sony SACD with Gale floor floor
standing speakers. For a while I've been convinced that one speaker/
channel - the right one - wasn't equal to the other - I cleaned out
all the connections, stripped back the cables again, even swapped the
speakers around, and still it sounds to my ears like one is weaker
than the other - am I imagining it? Or is there another explanation?
I've played around with the positioning and my listening position is
pretty much central.

Any comments appreciated,

Andy

Swap the two speaker connections at the amp - right for left. Is the
right still weaker? If so, the speaker is the problem, otherwise it is
something in the rest of the system - reverse other bits until you
find which swaps the fault.

Now, is it really weaker? Put the speakers face-to-face, as close as
you can get them. Reverse the phase of just one of the speakers does
the bass vanish? If so, the speakers really are equally loud, and you
have some asymmetry on the room.

d

--
Pearce Consulting
http://www.pearce.uk.com

On Sun, 11 Mar 2007 13:16:09 GMT, (Don Pearce)
wrote:

Now, is it really weaker? Put the speakers face-to-face, as close as
you can get them. Reverse the phase of just one of the speakers does
the bass vanish? If so, the speakers really are equally loud, and you
have some asymmetry on the room.

How critical is this test? Even with mismatched speakers there will
be some bass cancellation and with perfectly matched speakers, there
will be almost complete cancellation. The only real way to determine
whether there is a mismatch, aside from trusting one's ears, is to
measure the output.

Kal

On Sun, 11 Mar 2007 13:16:09 GMT, (Don Pearce)
wrote:

Now, is it really weaker? Put the speakers face-to-face, as close as
you can get them. Reverse the phase of just one of the speakers does
the bass vanish? If so, the speakers really are equally loud, and you
have some asymmetry on the room.

"Vanish"? And wouldn't it still reduce if one speaker was a few dB
up?

My new Cambridge 540A doesn't have this unbalanced output, but my former
Sony amplifier did (after 20 yrs)!
Most of the time, the stereo potentiometer (volume control) is the cause.
Specially with very low setting (0..5 on 0/100 scale).
If you turn-up the volume, the unbalance disappears, but that is ofcourse no
option for your problem.
So, if it turned out to be the potmeter, you'll need to replace it with a
new one.

Max H.

"andyjk70" schreef in bericht
s.com...
HI, hope you'll indulge this newbie query.

I have a cambridge audio 540A and Sony SACD with Gale floor floor
standing speakers. For a while I've been convinced that one speaker/
channel - the right one - wasn't equal to the other - I cleaned out
all the connections, stripped back the cables again, even swapped the
speakers around, and still it sounds to my ears like one is weaker
than the other - am I imagining it? Or is there another explanation?
I've played around with the positioning and my listening position is
pretty much central.

Any comments appreciated,

Andy

Thanks for your replies - I may get it looked into professionally.

Cheers

Andy



On 12 Mar, 06:33, "Max Headroom" wrote:
My new Cambridge 540A doesn't have this unbalanced output, but my former
Sony amplifier did (after 20 yrs)!
Most of the time, the stereo potentiometer (volume control) is the cause.
Specially with very low setting (0..5 on 0/100 scale).
If you turn-up the volume, the unbalance disappears, but that is ofcourse no
option for your problem.
So, if it turned out to be the potmeter, you'll need to replace it with a
new one.

Max H.

"andyjk70" schreef in legroups.com...



HI, hope you'll indulge this newbie query.

I have a cambridge audio 540A and Sony SACD with Gale floor floor
standing speakers. For a while I've been convinced that one speaker/
channel - the right one - wasn't equal to the other - I cleaned out
all the connections, stripped back the cables again, even swapped the
speakers around, and still it sounds to my ears like one is weaker
than the other - am I imagining it? Or is there another explanation?
I've played around with the positioning and my listening position is
pretty much central.

Any comments appreciated,

Andy- Hide quoted text -

- Show quoted text -

Any comments appreciated,

I had exactly the same problem with my KEF 104's. Eventually I tracked
it down to a blown tweeter in the left speaker. Amazingly, the tweeter
adds very little audible stuff, other than the "ambience". I'm planning
to purchase an old stethoscope to simplify diagnosis of this problem in
future.

Then I had the same problem again only last week with a pair of Rogers
LS1's that I'm connecting up to an old QUAD 33/303 for our holiday home.
In the end I deduced that the volume control had gone seriously
one-sided during years of being stored in the attic. Whizzing it up and
down a bit fixed that, fortunately.

My first test was to swap the speakers left to right (so the left sound
came out of the right and vice-versa). This was to eliminate problems in
my ears/perception. I'm getting older, and get wax in my ears, so I had
to eliminate the probable cause first.

--
Steve Swift
http://www.swiftys.org.uk/swifty.html
http://www.ringers.org.uk

On Sat, 07 Apr 2007 08:03:03 +0100, Steve Swift
wrote:


I had exactly the same problem with my KEF 104's. Eventually I tracked
it down to a blown tweeter in the left speaker. Amazingly, the tweeter
adds very little audible stuff, other than the "ambience".

snip

. I'm getting older, and get wax in my ears, so I had
to eliminate the probable cause first.

Maybe that's why you can't hear what the tweeter does?

On Mar 11, 2:05 pm, "andyjk70" wrote:
HI, hope you'll indulge this newbie query.

I have a cambridge audio 540A and Sony SACD with Gale floor floor
standing speakers. For a while I've been convinced that one speaker/
channel - the right one - wasn't equal to the other - I cleaned out
all the connections, stripped back the cables again, even swapped the
speakers around, and still it sounds to my ears like one is weaker
than the other - am I imagining it? Or is there another explanation?
I've played around with the positioning and my listening position is
pretty much central.

Any comments appreciated,

Andy

On my 640A (similar inside to the 540A, perhaps eve nthe same) the
right channel does fade out sometimes and then comes back again.

Robert