Audio Aero Capitole - 6021W subminiature tube ??

Hi lal

Tighter bass, better timming. More focus.

Masilu

Hello everybody,
Since it is capitole thread maybe somebody had similar problem.
When my monoblocks (Clayton M100) are connected to my CDP Audio Aero Capitole mkII with XLR interconnect, there is pretty audible white noise. When I disconnect XLR connection noise disappears. Noise have constant level in both channels. When Claytons are connected to CDP with RCA interconnect there is no noise, dead quiet.
Any idea why ? Any suggestion. Is not supposed XLR to be quieter connection ? I have tried many different RCA, XLR cables, always the some, so problem is not in a particular cables make, but in the connection itself. problem must be either with AA Cap or with Clayton.

Sorlowski- Have you checked to see that the pin-out on the balanced output on the AA is the same as the pin-in on the Claytons? There are some products out there with a non-standard configuration for the XLR connectors.

That is an interesting thought. Is it not normalized, especially that both Clayton and AA cap are products designed for US market. US How do I check that ?

How do I check that ?

If you have a multimeter, check for continuity between xlr pin 1 and the ground sleeve of an rca connector. Otherwise check with the manufacturers.

However, the most common inconsistency in xlr pinouts is that the signals on pins 2 and 3 are interchanged, which would not affect hiss levels. It would just invert polarity, sometimes referred to as "absolute phase," which would have minor or negligible effects on many or most recordings.

Also, check that continuity does NOT exist between pin 2 and ground, and between pin 3 and ground. A near zero resistance between one of those pins and ground would indicate that the unit does not drive the xlr connector with a differential pair of signals. I would be very surprised if that were the case, but if it were it would go a long way toward explaining the hiss.

Regards,
-- Al