Gem DEX 20

PCM Piano Module (199X)

DEX20 demo

Overview

OVERVIEW MIDI module with numeric display, midi-led for activity, 8 basic sounds and 56 variations of them with effects (chorus + tremolo with variable speed). Sounds cannot be edited but a simple control for midi channel with OMNI mode.

TERMINAL CONNECTORS:
- 2 signal line out
- Midi INPUT + THRU
- pitch trimmer for tuning
- 2 pedal inputs (damper and soft)
- VDE current input

Sounds list

SOUND main core based on a CPU intel 8052ah - sound is out of a simple ST Microelectronics "SGS J004", wich read pcm waveforms out of an EPROM, it's the same used into the Miracle PIano Teaching System, but instead it features decent 2x CEM 3381 VCA amplifier. (thanks to TXG for the pic)
-> Contrary to what some people have been saying, there is NOT YAMAHA CHIPS YM, and it is NOT an FM unit!

Sound list preset

Sound list: there are 8 basic sounds and some variations with chorus and tremolo
- PIANO1
- PIANO2
- VIBES
- MARIMBA
- ELECTRIC PIANO1
- ELECTRIC PIANO2
- CLAVI
-CHIMES

Gem DEX 20 Specifications

COMPANY: GEM
CLASS: MIDI SOUND MODULE with option 19" Rackmount
SYNTHESIS:
POLYPHONY:
MULTIMBRIC: 2 layers
Price: 50€

EFFECTS: TREMOLO, CHORUS

TERMINAL CONNECTORS:

LINE OUT LConnector: 1/4" Phone Jack (6.35mm) Mono, Unbalanced, Socket (Female)
MIDI IN / OUT / TRHU
AC IN Connector VDE
SOFT PEDALConnector: 1/4" Phone Jack (6.35mm) Socket (Female)
DAMPER PEDALConnector: 1/4" Phone Jack (6.35mm) Socket (Female)

WEIGHT: n/a
DIMENSIONS; n/a

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GEM DEX20

45 out of 100 based on 1 user ratings

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