Sonar FS2340 and Demco Modulator hook up

[oil2gas]

Does anyone know if i hooked up a Demco Modulator to my Sonar
FS 2340 . Can i use a powered D104 or does it have to be a non-powered D104? If i have a mod that gives me two levels of DeadKey and Swing would it make a difference
? MOD#1:
Switch one in up position gives me 3w DK and swings to 12w??
Switch one in down position gives me 6w DK and swings to 12w
Which of these two should i use with the Demco hooked up to Sonar?
I know its two quesiton but please set me straight before i make some smoke and we all know that tubes and iC's do not work without that smoke........
Sonny