OVERVIEW The main panel features 1 knob, 16 buttons, 16 non-dynamic pads and a central volume mixer for each instruments; a lcd display with no backlight (pretty fragile plastic protection, pay attention). In 2014, Roland add the tr707 soundset to the Aira TR8 digital drum machine.
TR-707 factory reset procedure Power on while holding TRACK WRITE and TRACK #1
Back panel terminal connectors:
1- separate analog outputs (x11)
2- main out
4- footswitch input for start/stop
5- trigger out (pulse +5V)
6- tape intrface
7- Midi interface
8- sync at 24 PPQ (5-dins)
9- Power supply PSU Roland Boss 12V DC negative center.
SEQUENCER notes can be entered by either in realtime with metronome or in step mode with a 16 steps grids
Some recording functions:
- shuffle adjustment
- swing option
- variable quantisation resolution
- different accent velocities settings: off / mid / strong
MIDI the implementation is basic with just velocity, in addition pads transmit assignable Midi notes (not the lenght) using specia Midi mode 2 setting.
SYNC the TR-707 is also very appreciated as Sync / Midi communication bridge.
It can be synchronized to other units in 3 different manners: Midi clock / tape sync / sync at 24PPQ
The trigger out signal generates pulses at +5V (controlled by rimshot) and syncs arpeggiators or sequencer like Juno-60 or SH-101.
MEMORY MEMORY: 64 patterns + 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 M-64C
- magnetic tape interface dump (or record a wav file)
MODIFICATION some common modifications are: changing wave rom set, real-time instrument pitch knobs or barbaric circuitbending. However many of these mods were common when 707 was cheaper, now people tend to prefer intact machine due to raising commercial value.
MAINTENANCE The tr707 is a pretty sturdy and reliable machine, not much to signal. Like many machine from that era, the plastic gets yellowed in time, it's pretty common to apply to special products to invert this, back to a much better white.
Type: digital drum machine based on PCM
Actual price: 500€ trend up
MEMORY CAPACITY: 64 Patterns (4 Pattern Groups x 16)
TEMPO: Quarter Note = 38 to 250
TRACKS: 4 Tracks ( | to |V tracks up to 998 bars)
STEP NUMBER (Per Bar) 1 to 16 steps
DRUM VOICES: (15 Voices) Bass Drums (1 and 2), Snare Drums (1 and 2), Low Tom, Mid Tom, Hi Tom, Rim Shot/Cow Bell, Hand Clap/Tambourine, Closed/Open Hi-Hat, Crash Cymbal, Ride Cymbal, Total Accent
Master Output (L, R / Mono)
Bass Drum (1 and 2), Snare Drum (1 and 2), Low Tom, Mid Tom, Hi Tom,
Rim Shot / Cow Bell, Hand Clap / Tambourine, Closed / Open Hi – Hat,
Crash Cymbal, Ride Cymbal
MIDI Input + MIDI Output
Tape Memory / Sync
Save / Out, Load / In
Trigger Output (Rim Shot: + 5V, 20ms pulse), Start / Stop (DP – 2),
Sync In / Out ( 1: Run / Stop, 2: GND, 3: Clock, 5: Continue)
DC IN 12 VDC
OPTIONS: Pedal Switch DP-2, Memory Cartridge M-64C
ACCESSORIES: 12V AC Adaptor, Connection Cord, Owners Manual, MIDI
POWER CONSUMPTION: 2.4 W
DIMENSIONS: 380 (W) x 250 (D) x 73 (H) mm 14 – 15 / 16′ x 9 – 13 / 16′ x 2 – 7 / 8′
WEIGHT: 1.5kg / 3lb 5oz