Derick2k sent me a prototype of the audio merge kit and I installed it over the weekend. Install requires one to remove the two rca jacks off of the multi and install a pcb in their place. This pcb is powered via a 3 pin connector. You must tap 5v, ground, and the Dash signal from the multi to plug onto this connector. There is a cable used to tap line-level from the cps1 A board via the CN5 connector. This cable plugs directly from CN5 to a connector on the audio mod pcb.
The other part of making this work requires modding the A-board by removing the sound pot. CN5 does not output actual line-level unless the volume pot is removed. So to remedy this we remove the volume pot and install a small pcb that adds back the volume pot but with a bypass switch so we can choose whether we want jamma audio (bypassing the pot mutes jamma audio) or proper line-level. Note that doing the A-board mod is not required but I'd you don't you will have uneven channel volume and bad sound mixing.
One thing we may add is a volume control between CN5 and the audio pcb. Currently you can't control the volume from CN5 unless your cab has a volume pot. So some cabinets, such as q25, have super loud music because you can't lower it via the pcb.
Comments are appreciated. Pics below:
The other part of making this work requires modding the A-board by removing the sound pot. CN5 does not output actual line-level unless the volume pot is removed. So to remedy this we remove the volume pot and install a small pcb that adds back the volume pot but with a bypass switch so we can choose whether we want jamma audio (bypassing the pot mutes jamma audio) or proper line-level. Note that doing the A-board mod is not required but I'd you don't you will have uneven channel volume and bad sound mixing.
One thing we may add is a volume control between CN5 and the audio pcb. Currently you can't control the volume from CN5 unless your cab has a volume pot. So some cabinets, such as q25, have super loud music because you can't lower it via the pcb.
Comments are appreciated. Pics below: