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: P8748 CPU, 8243, AD7523 D/A conv., 5101 SRAM, LM3086 transistor arrays, MK50240 TOS,CD4520BE counter, TDA0470 trans. arrays, 3- SAD-512 BBD's (14pin) and uA723 voltage regulator.
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. A TOS with 4520 chips

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

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