Digital drum machine based on samples and step sequencer with advanced synching options.
Part of the famous Rhythm Composer family with similar TR-909 design and sharing same PCM samples
LAPTOP (weight: 1.5Kg)
The main panel features 1 knob, 16 buttons, 16 non-dynamic pads and a central volume mixer for each instruments.
Back panel terminal connectors:
11 separate outputs
- main out
footswitch input for start/stop
- trigger out (+5V)
- tape intrface
- Midi interface
sync at 24 PPQ (5-dins)
Power supply PSU Roland Boss 12V DC (-
VOICE main core is a Hitachi HD6303X CPU manages 10 channels.
Each voice has one or different assigned samples from a wavetable, sounds cannot be edited in anyway but volume mixing.
WAVETABLE contains 15 samples at 6 bits resolution.
Here's the full list, note that some instruments are channel-shared:
SEQUENCER notes can be entered by either:
- realtime with metronome
- step mode with a 16 steps grid
(can be defined)
Some recording functions:
variable quantisation resolution
- 3 accent velocities off / mid / strong
SYNC the TR-707 can be synchronized to other units in 3 different manners:
sync at 24 PPQ The trigger out signal generates pulses at +5V (controlled by rimoshot) and syncs arpeggiators or sequencer like Juno-60 or SH-101.
MIDI the implementation is basic with just velocity, in addition pads transmit assignable Midi notes (not the lenght) using speciacl Midi mode 2 setting.
- RAM 64 patterns
- RAM 4 songs
RAM system works with 2 X 1.5V stilo batteries.
Data can be saved in 2 different ways:
memory cartridges 64 Kb model M64C
- tape interface dump
Roland TR-727 quite same machine, the only difference is the blue prints and the internal wavetable with different sounds latino-oriented.
Roland TR-909 hybrid analog digital same crash, hihats and rides as tr707