ARP Quadra -1978    Weight= Lbs. Number mfg.= ? MRP=$3700


User Manual: fdiskc archive or Far too Good
Reset Proceedures: N/A
Operating System code: N/A
MIDI or other control protocol: N/A
Software related Links: N/A
Patches or knob settings:
Circuit Overview: below
Scematics/Service Manual: fdiskc archive or Far too Good
Common Service Issues/Tips: below
Parts Sources: Keys knobs semiconductors misc
Uncommon chips/modules used: P8048 CPU and probably same chips as Omni and Odyssey. anyone know?
Modifications: gearhack page Including Tim Smith's filter mod
General Info Links: Vintage synth explorer





















Circuit Overview:
     A combination of the ARP Solus and Omni with 16 patch memory of sorts... snapshot memory I'm assuming. Haven't had time to really go over this rare one.

















Service Tips:
     Always those tantalum capacitors that can short/drift. I'm not familiar with these though. ANyone?

















Parts:
Lots of discrete parts in these. Always feel free to ask or check my Parts
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