Yes a double bass might be a bit neck heavy.. im going to use hipshot lite tuners and make a long upper horn.
youre right aidlook. I dont need separate volume for each bass. but i think i will go for separate blend and tone
so this is what i have so far
-three way switch on upper horn. fretless-both-8string
-master volume on lower horn
-blend, tone, blend, tone under 8string bridge
-two outputs with a three way switch for each. That way i can use two rigs and send each bass to either rig1, rig2 or both. Hope that works. I have some looping ideas and i think that might be cool.
im not in a hurry about this project, but for those interested i will add some pics when i have something to show. Im not in the same leauge as most of you other folks here, so i think i will need some input on this one:)