hejsan,
I have the IM-6 Module. I have been struggling with getting it up and running too. perhaps we can all work together and figure it out.
here is what I have figured out so far.
the pinout on the back of the unit goes as follows.
1. Mic input -
2. Mic input +
3. Line input -
4. Line input +
5. Ground 1 (this ground is the main ground in the unit with the exception of the output of card 2, and the echo level, which we don't use)
6. Output + card 1
7. Input + card 2 (this actually goes to the fader first, if your unit still has the fader wires connected, it will be at the bottom of the Auditronics board a three conductor wire, one red, one black, one clear. hooke the clear one to the wiper of a 600ohm or higher audio pot, and the black and red to the other terminals... I don't recall which wire goes to which terminal in order to make the travel right. but you got a 50/50 chance so.. thats not bad)
8. +24V DC
9.
10.
11. pins 9-13 all deal with the echo level, and the pre listen button.
12.
13.
14. Output + of Card 2
15. Ground 2 (this is the ground for the output of card 2.)
There is a ceramic capacitor that goes from ground 2 to Ground 1. and there is also a 5k resistor that goes from the Ouput + of card 2 to ground 2.
I have been only able to use the unit succesfully if I only use the 1st card. I can't figure out how to wire the second card in.
Card one is on the component side of the Auditronics board, and does the initial amplifying, this is the card that has the EQ in its feeback circuit.
Card two has a 10.7k resistor in the feedback circuit giving it an overall gain of 40db.
what I have found is this. if I connect pins 6&7 (the output of card one and input of card 2), and If I connect the ground 1 to ground 2 I got a signal out of the unit, but it had an awful hum.
I have not been able to get any further than that.
what do you guys think?
Matt, thanks so much for all the Spectra sonics info you've provided on this forum, I would'nt have been able to figure out as much as I have with out your help.
-hangman