Synth Museum

"Synthesizer preservation via research and education."

The Web SynthArk


Roland RS-505


Released: 1978



"Paraphonic" string synth, including monophonic synth and bass sections Architecture Class: Conventional (subtractive).

Ebay Description:

The Roland RS-505 is a 49 key, analog ensemble synthesizer, featuring auto-bend, vibrato, fully polyphonic string and synth sections, along with monophonic bass section. The synth section features a resonant low-pass filter with ADSR envelope, while the string and bass sections have AR envelopes.


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
49 keys W:905mm (35.6in) D:30mm (14.6in) H:145mm (5.7in) 14kg (31lbs) chorus stereo synth/bass no pedal gate:15V trigger:15V(2ms) pitch sustain 12W AC


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


Multitimbral Polyphony Unison Architecture
3 (synth/string upper and lower regions split at C3) String/Synth:full (via octave divider) Bass:1 no VCO->VCA->VCF->VCA


Effects Pan Modulator Volume Modulator Headphone
chorus no StringEG SynthEG VolEG yes


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A pitch-shift no


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no no no pedal no no


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
Synth analog ? upper:4-8' lower:4-8' bass:8-16' no no auto-bend LFO no
String analog saw? mix:4-8' no no auto-bend LFO no
Bass analog saw? mix:8-16' no no auto-bend LFO no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
Bass analog ? no ? BassEG no no
Synth analog ? yes low pass SynthEG LFO pedal no no


Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
StringEG - attack no no no no no
BassEG - attack release no no no no no
VolEG - release no no no no no
SynthEG sustain attack decay release no no no no no


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO triangle? yes no no no no no
Conventional Models
RS-101 RS-202 RS-505 RS-09 SA-09 VP-330 SH-3 SH-5
SH-1000 SH-2000 SH-7 SH-1 SH-2 SH-09 SH-101 MC-202
CMU-810 TB-303 CMU-800 Juno-6 Juno-60 MKS-10 Juno-106 Juno-106s
HS-60 MKS-7 Juno-1 HS-10 Juno-2 HS-80 MKS-50 Jupiter-4
MRS-2 Jupiter-8 Jupiter-6 MKS-80 JX-3P MKS-30 GR-700 JX-8P
JX-10 MKS-70