MATRIXSYNTH: Modded SEQUENTIAL CIRCUITS DRUMTRAKS with 21 Extra Eproms


Thursday, June 02, 2016

Modded SEQUENTIAL CIRCUITS DRUMTRAKS with 21 Extra Eproms

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

Pics of the inside below.

"SEQUENTIAL CIRCUITS DRUMTRAKS
Digital Drum Machine (1983)
one of a kind ! professional modified with several modswitches to get extra samples and sounds (switch and mute) !
used by German (Berlin) music project TOK TOK !

DRUM MACHINE Main panel features a segment display, 13 dynamic trigger pads, 9 buttons and numeric pad.
Back panel terminal connectors:
- main outputs
- 6 seperate outputs
- clock out
- metronome out (it generates +5V pulses)
- tape interface
- Midi interface

VOICES main core 8 bits NEC D780C-1 CPU part of Z80 ZILOG family manages 6 channels polyphony, each channel features 2 settings:
- individual volume gain
- pitch tune quantised into 15 different steps.

WAVETABLE 13 PCM waveforms at 8 bits resolution stored on socket EPROMS Erasable Programmable Read Only Memories.
TECH: TOM channels are filtered by famous chip Curtis CEM3320.
potChannel 1: Bass Drum potChannel 4: Crash cymbal / ride Cymbal
potChannel 2: Snare / Rim potChannel 5: Open / closed HH
potChannel 3: Tom 1 / Tom 2* potChannel 6: Claps / tambourine / cabasa /cowbell

SEQUENCER record in real-time mode or step mode.
Recording quantisation at variable resolution levels from 1/2 to 1/96 in 10 values: 1/2, 1/4, 1/6, 1/8, 1/12, 1/ 16, 1/24, 1/32, 1/48, 1/96 or swing shuffle.

SYNC internal frequency tempo range from 40 to 250 BPM, sync mode available in 2 ways:
- external Midi clock
- analog sync IN at 24 /48 /96 PPQ resolution, but Drumtraks outputs only at 24 / 48 PPQ resolution.

MIDI each sound is triggered with velocity levels and pads output MIDI with dynamic.

MEMORY:
- 3289 notes
- 99 patterns (100 measure)
- 99 songs
Data can be saved either tomidi exclusive dump or tape backup

included are 21 extra eproms - very hard to find ....."


No comments:

Post a Comment

To reduce spam, comments for posts older than one week are not displayed until approved, usually same day. Do not insult people. For items for sale, do not ask if it is still available. Check the auction link and search for the item. Auctions are from various sellers and expire over time. Posts remain for the pics and historical purposes. This site is meant to be a daily snapshot of some of what was out there in the world of synths.

PREVIOUS PAGE NEXT PAGE HOME


Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH