Weight: 1,9 Kg
Dimensions: 303 (w) x 235 (h) x 92,5 (d) mm
| trend price : 200€
Groove Effects (1999)
Dj-oriented machine with step value modulations inspired from analog sequencer.
The EF303 also includes a VA digital
drum machine and a TB -303 emulation.
EFFECT MODULE Main panel features a segments display, 16 sliders, 7 knobs and 30 buttons.
Rear panel terminal connectors:
RCA stereo outputs
- microphone input
line RCA input switch between line / phono with ground terminal for turntables.
Power supply is a 9V external DC PSU negative polarity -)+
VOICE internal DSP resolution works at 20 bits / 44 kHz sampling rate.
The EF-303 groovebox is a fully digital unit which manages 3 main sound sections:
- a modulator effect processor
- a virtual analog TB303 bassline emulator
- a virtual analog drum machine
MODULATOR the 16-steps modulator is especially designed for real-time visual performance.
The principle is quite simple: the step modulator cyclically changes the effect settings to a specified values and creates moving textures or rich rhythmic patterns.
can be played in 5 modes:
- forward -->
- backward <--
- forward / backward .--><--.
- pendulum --><--
- random -?-
TIP: It is also possible to set the number of steps for a sequence, up to 16 at 480 ticks per note resolution.
EFFECTS the machine features 16 algorithm effects:
|| filter : classic cutoff filter with resonance and a digital LFO
isolator: boosts or cuts specific frequency ranges on 3 bands low / med / high
flanger: classic short delay metallic effect with LFO modulation
pan delay: echo with panning ping-pong effect
reverb : adds classic reverberation
pitch/delay: shift the pitch and adds a time delay
slicer/pan: tremolo effects with stereo panning variation
comp: adds compression
LO-FI: reduces sound quality lowering the sampled BIT depth (bit crusher)
ring mod: iss a digital ring modulator
phaser: phase shifting effect with own LFO
voice: formant pitch shifter as voice changer, ROBOT for synthetic voice
vo Mod: tracks the incoming signal and triggers the internal synbass synthesizer.
DRUM MACHINE is based on modelling virtual analog.
Internal DSP generates 5 electronic percussions with no possible edit.
Drum Patterns are recorded using the step modulator. Each step slider is split into 5 equal zones and each of them corresponds to a specific percussion between:
- mute (no sound)
- open hihat
- closed hihat
- snare drum
- bass drum.
internal VA d rum machine HEAR
TB303 is also virtual analog and emulates the iconinc TB303 bassliner: notes are entered using the step modulator sliders from bottom position for lower octave to higher, in addtion the bassliner has some sonic controls including filter cutoff, resonance and slide emulation (but no accent "twang").
|| internal VA TB303 HEAR
SYNC internal frequency range is from 40 to 240 BPM or defined by TAP button.
Tempo can be slaved to to an external Midi clock or engage the AUTO-DETECT function that digitally counts the BPM from external signal and automatically syncs the patterns.
||The sync function provides 12 tempo dividers: 16th, 16th dotted, 8th, 8th dotted, quarter, half note, whole, two whole notes, four whole notes, 16th triplet, 8th triplet and quarter note triplet.
MIDI synth and drum can be triggered by Midi and EF-303 knobs do transmit Midi CC#.
16 setups that can be data dumped to Midi sysex.
- 21 tuning scales : chromatic, diatonic, minor, dominant, whole, pentatonic and more.
VST PLUGIN no official roland EF VST PLUGIN, however some alternatives:
EF303 Factory Reset procedure
hold shift, turn on, press WRITE, CONFIRM
all snapshots, sounds, texts copyright Polynominal.com / Eric Pochesci polynominal.com is not associated or affiliated with ROLAND in any manner.
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