Batboard

I need to disable the internal speaker of a CDM series without just disconnecting it. I need to have the ability like the Radius series where I can feed the internal speakers audio back in through a pin on the 16-pin connector. The reason I'm doing this is that the radio will operate 2 external speakers PLUS the internal. The 3 speakers will each have their own volume pot. Yes, the radio will have a seperate volume pot. The reason you need to do this is that the radio has to put out full audio at all times so any of the speakers can be turned up to full level at any time while others remian low. And no...I don't want to use an external amplifier. I've done it many times with the Max/Radius series, but the CDM's speaker is always on! I suppose that I could run an external wire into the radio's speaker, but I can't see drilling a hole in a customer's new radio!

thanks!