[Harp-L] Technical mic/amplification problem/question for a 2 mic ( Frankenstein ) set-up. YOW!

[Roger Boyce <wader1@xxxxxxxxxxx>]

Hello Y'all
I'm calling on the tender mercies and collective wisdom of all harpL 
techies to solve an odd problem I'm trying to solve.
I employ an unorthodox ( Frankenstein-like ) microphone system whereby 
I run one mic - an ElectroVoice RP-10 Dynamic Cardioid - as a clean, 
un-powered signal. The other mic -a Microvox mini-electret ( with its 
own power source ) is attached to the RP 10  -and it runs through a 
chain of effects pedals which adds more boosts the signal. Each signal 
then passes through a separate Baggs DI and then into two different 
channels of a custom tube amp designed for harmonica. What I want to do 
is mix( blend ) both line signals and send the single mixed signal 
through ONE Baggs DI.  A  Y-cord doesn't work because signal canceling 
occurs. I thought of using a simple HI Z mini mixer but I think the 
same signal canceling will occur because I suspect it might be a phase 
issue. I looked for a passive HI Z mini mixer with phase inversion but 
came up short......anyway I'm not absolutely sure phase is the problem 
anyway. So in short - HELP.
Yours Truly
Roger "wader" Boyce