Hi,

 

I have a pair of these modules that I want to use to hook an old TC effects processor into my rig. However, the TC unit only provides XLR connections, a left-right pair for input and another left-right pair for output. I have some cables with the appropriate XLR genders at one end and 1/4@” TRS connections at the other. However, when I wire this up, I get nothing back from the effects unit. Unfortunately, I can’t validate that signal is getting as far as the effects processor, as I’m blind, so can’t look at the unit’s meters. I assume that my problem is that the A-138D has unbalanced sockets for the sends and returns, so I’m getting signal cancellation – is this the case, please, or are there other things I might try  

 

I should say that the A-138D units are working fine as cross-faders.

 

Many thanks in advance for any advice.

 

Best wishes.

 

Tim Burgess