Pre-out module

[hvsl]

Hello,

Does anyone know how to get the Pre - out module?
This is for upgrading my Expert 120, to get subwoofer out.

Thanks in advance,

Harry.

[Dozer]

Did you ever have any luck with the subwoofer output for your Expert 120? I purchased my Expert 120 second hand and wondered how you can tell if the card is installed.