ARP Axxe 1975    Weight= 14.5 Lbs. Number mfg.= ? MRP=$780


User Manual: Mediatorch free download or Manual Manor
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: Patch overlays came with Manual
Circuit Overview: below
Scematics/Service Manual: fdiskc archive or Silas 2300.pdf or Analog Hell
Common Service Issues/Tips: below
Parts Sources: Keys knobs semiconductors misc
Uncommon chips/modules used: CA3086 transistor arrays, SL19988 (selected 1558 dual op amp), SL19986 (Sel. LM301AN op amp)
Modifications:LFO Free run!
General Info Links: Vintage Synth





Circuit Overview:
     Basically a scaled down Odyssey with one VCO, similar filter to the later ones and the pitch bend knob.

Service Tips:
     Pots tend to get persistently dirty and can sometimes be brought back with repeated application of Caig Cailube. The recent one I worked on had a blow 4011 chip..well it didn't measure blown but it wasn't responding to give a trigger output. It also had a popping filter. The filter's response was sudden, going from complete cutoff to wide open in a very short span of the slider. Trying to troubleshoot now.

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