Leben CS600 speaker balance issue

Stevenarrow

• Oct 11, 2018

• #1

Hello,

Lately I've had to adjust the balance on my Leben (to about the 10:30 position) to maintain a centre image. This is happening with both digital and vinyl playback. I have swapped power tubes and re measured speaker layout.

Any thoughts as to the issue?
Diagnostic procedures?

 

Tleung

Site Supporter

Site Supporter

• Oct 11, 2018

• #2

have you try swapping the 6CS7 from left to right?

 

Stevenarrow

• Oct 12, 2018

• #3

Tleung said:

have you try swapping the 6CS7 from left to right?

Click to expand...

Yes. Flipped tubes and rolled tubes.

 

Tleung

Site Supporter

Site Supporter

• Oct 12, 2018

• #4

Well without a schematic I will be guessing that bad or dirty Balance pot/volume pot? Or one channel power supply problem that causing a uneven supply voltage.

 

B

BH

• Oct 13, 2018

• #5

I believe the CS600 shares the power supply rails between both channels so it probably is not a voltage issue. Do others experience the same channel imbalance that you do? I ask because I have dealt with a number of situations over the years where the imbalance turned out to be the listener's ears and not the equipment! Some folks produce enough wax to occlude the canal sufficiently to reduce the perceived amplitude.

 

Stevenarrow

• Nov 17, 2018

• #6

Cleaned all pots, selectors and tube sockets. Centre image came back and clear sound top to bottom. This may be an annual chore for me going forward.

 

Wntrmute2

Not So Mediocre Member

Site Supporter

• Nov 19, 2018

• #7

BH said:

I believe the CS600 shares the power supply rails between both channels so it probably is not a voltage issue. Do others experience the same channel imbalance that you do? I ask because I have dealt with a number of situations over the years where the imbalance turned out to be the listener's ears and not the equipment! Some folks produce enough wax to occlude the canal sufficiently to reduce the perceived amplitude.

Click to expand...

That happened to me. I was constantly altering the balance to produce a louder left channel. Finally I went to an ENT and my ears were liDed with wax. Left worse than right. Fixed my balance problem instantly.

 

Olson_jr

Active Member

Site Supporter

• Nov 19, 2018

• #8

Wntrmute2 said:

and my ears were liDed with wax.

Click to expand...

That looks like an Apple Product.

Hope all is OK.

 

Wntrmute2

Not So Mediocre Member

Site Supporter

• Nov 19, 2018

• #9

New Apple earwax eliminator. Special app.

 

Stevenarrow

• Nov 19, 2018

• #10

clean your pots -- clean your ears...

 

Stevenarrow

• Nov 19, 2018

• #11

I spent that past year trying to convince myself it was a room imbalance issue... Ended up taking an hour to fix.