Saturday, May 06, 2017

ARP AXXE and AVATAR Analog Synthesizer


via this auction

"This is a combo Avatar + Axxe with CV/gate cable and Stand

Avatar and Axxe Modifications Included :
All tantal polarized capacitors are changed for new Electrolytic Capacitors.
All Sprague Orange capacitor are changed

Old transistor 2n606/2n5172 has been changed for new 2n3904/06
all defect IC has been changed by new (ca3080, CA3086, lm1358, lm3900 ..)
LM301 has been changed by new TL081 (Compensation cap removed)
New oversized power supply with modern component (lm317/337) and separate power supply for the LED
with modern component (lm317) with 1 toroidal transformer +/-15v + 1 toroidal transformer +5v for Avatar
and 1 R-CORE transformer +/- 15 and +5v for Axxe
With Queensland Walnut raw wood veneer panels
Specific Avatar Modifications Included :
Correction on the 4075 VCF which cut off frequencies above 12kHz

37 new sliders, Bourns PTL serie with led. Each color has an individually adjustable trimmer to adjust the brightness. The colors are according to the color code of the Odyssey.
The guitar part (Board E and D) are present and fonctionnel, but not used in this configuration.
The Guitar microphone is included. The connector are changed for a less expansive one (DIN 6, the same as input of the avatar)
Board D power supply connector are not connected (Reduce consumption).
- the Portamento, Guitar vol slides , and switchs string select has no effect
Two modifications are been made to allow the adjustment of both oscillators pitch to tune with another instrument :
- the Triger sensibility is used for a (reverse Log) pitch adjustment
- the 3 positions switch Env Follow is used to an approximatively +/- 2 octave pitch adjustment
Specific AXXE Modifications Included :

New VCF AM4023 Filter12dB Low Pass
Due to the configuration of the Axxe slider the resonance are inverted (low on the top) and to have a maximum resonance,
the settings of Q is very hight, that will take the filter in oscillation depending of the frequency and the reso.
23 new sliders, Bourns PTL serie with led. Each color has an individually adjustable trimmer to adjust the brightness. The colors are according to the color code of the Odyssey.
All IC excepted VCO, are on sockets for easy change."

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