Trend price : 100-150€
The TX7 has been designed as a voice expander for the DX-7 classic FM synthesizer.
Company: Yamaha
Model: TX-7
Class: Module Synthesizer
Dates: 1984
Weight: 1,5 Kg
Dimensions: n/a
Display: 16 x 2 lines LCD
Synthesis: FM
Polyphony: 16 voice
Operator: 6 sine OP
Algorithms: 32 paths
Polyphony: 8 voices
LFO: 2 modulators
Envelope: 1 + 6 x OP
Memory: 32 patches
CPU: 6303
FM IC: Y2128
Demo: 1
Video: 1
Review: 1
DOWNLOAD: user manual - service manual -
Overview
MODULE standalone unit intended to be placed on a DX as a simple voices expander.
The main panel features a 16 x 2 lines display with no backlight and
12 buttons for edit.
Back panel terminal connectors:
-
Midi interface
-
tape interface
-
jack mono signal out
-
headphones
Sound
16 digital voices.
FM TX7 synthesis
6 sinusoidal digital oscillators operators (or OP) organized as algorithms, assigned as carrier
or modulator, linked between them on different
pathways interacting on their harmonic contents depending on the
varable feedback strength.
- carrier: defines the amplitude and the spectral frequency
- modulator: sets the sound timbre and the relative harmonic contents.
The Tx7 offers 32 combinations algorithms with frequency ratio or fixed frequency: the output is fed back to its input with 7 levels feedback, as general rule, high values feedback results in richer harmonic contents.
LFO
2 digital modulators with adjustable start delay and sync retrigger:
- PMD modulates pitch
- AMD processes the amplitude
Both LFO delivers 6 shapes: sinewave, triangle, saw up/down, square and sample & hold.
Envelope
IC YM2819 generates 7 envelopes:
- 1 EG pitch: 4-segments structure + 4 time levels.
-
1 EG for each operators: 4-segments structure + 4 time levels
Performance
- aftertouch amount
- foot control amount
- breath control amount
- Midi channel assign
- mono or poly mode
- pitchbender range amount
- volume mix
- portamento amount
Memory
-
32 patches
-
32 performances
Review
OK: space-saver / FM / multitimbral
NOT : edit interface / limited FM edit
"A Dx7 in a little box! Edit is even more a pain than the original synth and NEEDS an external editor. However good sound classic, a smart buy"
Text , review, special demos copyright polynominal.com / Eric Pochesci
