2600

ARP 2600

Released: 1971

MSRP: $2600US

Synopsis:

Semi-modular (81 patch points) with speakers. VCOs can be switched from audio to LFO (0.03Hz-30Hz) ranges. Architecture Class: Conventional (subtractive).

Ebay Description:

The ARP 2600 is a semi-modular (81 patch points), 49 key, monophonic (duophonic with 3620 keyboard) analog synthesizer, featuring three oscillators (with LFO ranges and ring modulation), resonant low pass filter, dual ADSR envelopes, envelope follower, lag processor, dual mixer/inverters, portamento, and S/H.

Physical

Form Factor	Dimensions	Weight	Audio Input	Audio Output	Communication Port	Control Input	Control Output	Switch Input	Power
49 keys and desktop	?	?	microphone	stereo	no	81 patch points	no	various patch points	wired

Interface

Compatibility	Multitimbral Memory	Program Memory	External Storage	External Programming	UI Input	UI Output
-	N/A	no	no	no	buttons/sliders	LED

Architecture

Multitimbral	Polyphony	Unison	Architecture
no	1 (3604 keyboard) 2 (3620 keyboard)	no	VCO1+VCO2+VCO3->VCF->VCA->Mix->Pan

Output

Effects	Pan Modulator	Volume Modulator	Headphone
reverb	no	EGs VCOs	yes

Control

Arpeggiator	Arpeggiator External	Sequencer	Sequencer Memory	Sequencer External	Continuous	Program Change
no	no	no	N/A	no	no	no

Keyboard

Key Pressure	Chord Memory	External Control	External Sustain	Key Scaling	Velocity Curves
no	no	CV gate trigger	no	patchable	no

Source

Name	Signal Class	Waveform	Octave Range	Amplitude Modulator	Harmonics Modulator	Pitch Modulator	Wave Assign Modulator
VCO1	analog	saw:up square	10Hz-10kHz	no	FM:noise Ring PWM	EGs portamento	no
VCO2	analog	pulse saw:up sine square triangle	10Hz-10kHz	no	FM:noise Ring PWM	EGs portamento	no
VCO3	analog	saw:up square	10Hz-10kHz	no	FM:noise Ring PWM	EGs portamento	no
Noise	analog	pink-noise white-noise	-	no	no	no	no
Clock	analog	square	0.2-100Hz	no	no	no	no

Filter

Name	Signal Class	IC	Resonant	Shape	Frequency Modulator	Resonance Modulator	Shape Modulator
VCF	analog	4012 4072	yes	24dB low pass	EGs VCOs	no	no

Envelope

Name	Level	Rate	Loop	Polarity	Trigger	Level Modulator	Rate Modulator
EG1	sustain	attack decay release	no	no	no	no	no
EG2	-	attack release	no	no	no	no	no

Conventional Models

Synth Museum

"Synthesizer preservation via research and education."