2. analog
  3. 1291669919

I am at the end of my rope, please help

I have a problem that I can not solve and makes no sense to me at all.
My right channel is stronger than my left by a large margin. I can plug my tonearm cable directly into a Fozgometer (measures left and right output) and I get a substantially stronger signal on the right side. I confirmed this with my Voltmeter to make sure there was not a problem with the Fozgometer. So, as far as I can tell, this narrows the problem down to the Cart, Tonearm, Tonearm wire or the table.

Here is what I have tried:
1. Changed Azimuth in both directions. Small change but still much stronger on the right side.
2. Changed antiskating. Very little change.
3. replaced the cartridge. No Change.
4. replaced the tonearm and cartridge. No Change.
5. replaced the tonearm, cartridge and tonearm wire. No change.
6. I have used a second test record. No Change
My turntable is perfectly level.
I simply do not see how this is possible! I have an $83,000 system that I can not listen to. Any ideas would be much appreciated.

My system:
DaVinci Turntable > Lyra Titan i > Schroeder Reference tonearm > Manley Steelhead > Stealth Indra cables > VTL 450 amps > Stealth Mlt speaker cables > Vienna acoustic Mahler speakers
audioraider
audioraider OP
8 posts
 
I have thought from the beginning that it was a tonearm cable problem. The Schroeder tonearms use very very tiny copper wire with a clear coating. The wire runs directly from the clips to the RCA plugs. The wire sticks out of the tonearm in two locations and would be very easy to damage. If some of the plastic coating was scratched off you would never see it, even with a magnifying glass.

Here is the problem; when I disconnect the cart, the meter reads perfect continuity from red clip to pos, green clip to neg on the RCA and white clip to pos and blue clip to neg on the RCA BUT when I hook up the cart, the red then has continuity to both pos and neg on the RCA. The green also has continuity to both pos and neg on the RCA. The same goes for the white and blue on the other RCA. This leads me to believe that the cart has the short. With the cart disconnected, I also checked to see if there was any continuity from each clip lead to the base of the tonearm, thinking that a wire may be shorting to ground, and found no problem.
almarg's avatar
Ag insider logo xs@2x
almarg
9,670 posts
 
Audioraider 12-08-10: Here is the problem; when I disconnect the cart, the meter reads perfect continuity from red clip to pos, green clip to neg on the RCA and white clip to pos and blue clip to neg on the RCA BUT when I hook up the cart, the red then has continuity to both pos and neg on the RCA. The green also has continuity to both pos and neg on the RCA. The same goes for the white and blue on the other RCA. This leads me to believe that the cart has the short. With the cart disconnected, I also checked to see if there was any continuity from each clip lead to the base of the tonearm, thinking that a wire may be shorting to ground, and found no problem.
As I said in an earlier post:
Almarg 12-07-10: Since there are far fewer turns in the coils of a lomc compared to a mm, the resistance will be much less in a lomc. As a very rough ballpark guess, perhaps a few ohms in the case of the lomc, and many hundreds of ohms or more in the case of a mm. Depending on the resolution of your meter, and the resistance scale you are using, the resistance of the lomc may be low enough to appear to be a short even though it is not.
Are you certain that the "continuity" you are seeing when the cartridge is connected is in fact a zero ohm short, or might you in fact be reading the very low resistance of a few ohms that I would expect the LOMC cartridge's coils to normally have?

Regards,
-- Al
hifihvn
943 posts
 
Almarg talked about doing damage to the cartridge with an ohmmeter.The only thing that I can think of without measuring is(write color code and position down first), switch the left and right leads at the cartridge like someone mentioned above.The left and right plus(+),and the left and right(-)negative.That is a good way of telling if one channel in your cartridge is shorted.If the sound coming out of your left channel becomes the loud one,then I would guess the cartridge is the problem,minus tracking problems.I've never heard a tracking problem make a large volume difference.Again,using the meter may be causing *damage*,and especially an analog meter,with a dial gauge.Like Almarg said,the meter your using may appear to be showing a short.There should be continuity if I'm reading your post right.Again,the meter may be *harmful*.That's why I'd go with the left and right channels swap at the cartridge.And if the left gets loud after swap,it may be the cartridge,but I can't say for sure.
I don't want you to cause damage to the cartridge if it may
be something else being overlooked.This is a mystery.
hifihvn
943 posts
 
Oops,Almarg,I didn't see your post.It popped in while I was typing.
almarg's avatar
Ag insider logo xs@2x
almarg
9,670 posts
 
Thanks, Hifihvn. If I understood one of Audioraider's earlier posts correctly, he already tried swapping channels at the cartridge, and the problem DID move to the other channel.

One further note to Audioraider: If you measured continuity using a yes/no "continuity" function the meter may provide, that for example simply indicates the presence or absence of "continuity" via a buzzer or some other comparable mechanism (as opposed to measuring the specific resistance quantitatively), then the detection of "continuity" with the LOMC connected would definitely have been expectable, and not indicative of anything abnormal. That kind of meter function will indicate "continuity" even when a considerable number of ohms are present.

Regards,
-- Al
More to discover