Chas,
Ah, a xformer! If it is not a 1:1 ratio (used merely for isolation), I hope
the *low* side of the given ratio of your device is used at the *mic* end
(ergo it steps up into channel i/p). So if it's about 1:3.2, can we rename
it a 10dB Dab?
But using this interface seems drastic and unnecessary.
Is the mic cell at adequate voltage and where is it located? Is battery
switchable off/on?
At the other end, I imagine the mini jackplug should be mono if your R-1
recorder has Mono pannable inputs, or dual mono (stereo plug with tip & ring
in parallel), if your recorder has Stereo inputs.
The knock's result remains to be seen or heard, or not.
Jim