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Rhodes Chroma Polaris

 

 

 

fender chroma polaris synth

audio demo Country: USA
Weight: 19 kg
Dimensions: n/a
audio demo trend price : 600€
manual demo video comments

Rhodes Chroma Polaris (1984)

 

Son of the legendary Arp-Fender Chroma synthesizer: the Polaris is a kind of second version a little simpler but still powerful version.

The machine was originally designed by the ARP engineers, but then ARP society was bought by Rhodes 2 years before the commercial release.

 panel
pulse waveform

info KEYBOARD 61 keys with basic velocity system.
Main panel features 23 sliders and 62 buttons for edit process; central slider is assignable to one of the 14 available parameters while on the right side there are 2 levers for modulation and pitch bender.


Back panel terminal connectors:
- mono audio out (high / low impedances)
- headphones out
- tape interface
- Midi interface
- sync IN or OUT for sequencer synch
- custom chroma interface connector (for APPLE II computers)
- pedalswitch input for sequencer start and sustain.

 


edit SOUND machine core is a 8-bits CPU Intel 80186 manages 6 voices polyphony.
A voice is composed by 2 oscillators (OSC1 + OSC2) which structure is based on CEM 3374 + a white noise circuit + a sub-oscillator.
System manages different voice allocation modes:
- up to 3 voices assignable to different Midi channels
- 2 sounds can be stacked in UPPER and LOWER part.


VCo

chroma polaris


  OSC1 OSC2
shapes
sawtooth / square sawtooth / square
pulse width yes yes
volume bal no no
hardsynch yes yes
ringmod yes (fixed depth) as OSC1

osc




adsr ENVELOPE
2 EGs:
- EG1 VCA: 3 stages ADR
- EG2 AUX: 4 stages ADR + 1 extra time.


adsr




filter FILTER
resonant 4-poles lowpass filter based on Curtis CEM 3372 with cutoff and 8 fixed resonance levels. Keyboard tracking attenuates filter effect over octaves (to both low or high part).


filter




lfo LFO
a single delayed low oscillator (range 0,1 to 10Hz square and sinewave) modulates:
- DCO1 & 2 pitch
- PWM pulse
- VCA amplitude
- VCF filter (the "SWEEP").

 

memory SEQUENCER single track polyphonic, about 700 notes that can be recording in either real-time or stepmode. Of course Polaris can be also played byt MIDI with a great full Midi implementation: in fact all sliders sends the relative control changes.



filter


 

memory MEMORY:
- 132 sounds RAM
- 12 RAM sequencers.
Data backup can be done by MIDI SYSEX or tape storage - several hardware modifications expands the storage capacity.


memory


memory MAINTENANCE some common issues:
- buttons membranes is infamous for being highly unreliable and needs cleans or technical cares
- keyboard velocity system may need also to be periodically calibrated.
- power supply drains too much and it has been reported various issues of faulty power supplies.

On the right side a video tutorial for some possible fix

 

chroma polaris repair



memroy EDITOR some editors available on the market:
- Soundquest

ARP CHROMA



 

memroy RELATED MODELS:

ARP CHROMA ARP CHROMA Big, powerful and unreliable machine! previous model VIDEO
POLARIS II POLARIS II Should be same machine at 100% with different outfit for Japanese market VIDEO


 

effet VST PLUGIN / SAMPLED VERSION there are some free and commercial samples set:

  name price link demo
SOLARIS SOLARIS VST free
effet n/a
free sample pack Create music net free sample pack effet n/a



demoAUDIO DEMO

demo 100% polaris demo
demo pulse sync
demo bassline
demo NY 1997 pads
demo heretic voices



effet Soundcloud

demo 3 tracks 3 tracks


videoVIDEO CLIP SELECTION

Chroma Polaris Analog Synthesizer Chroma-Polaris Vintage Analog Synthesizer Fender Chroma Polaris 100% sounds demo
Analog Synthesizer Vintage Analog Synthesizer Chroma Polaris 100% sounds demo

audio demo




manual
CHROMA POLARIS MANUAL

 

 

 

 

manual
Rhodes Chroma Polaris SERVICE MANUAL

 

 

 



original scan

 

 

 

original scan

 

 

 

 

original scan

 

 

 

 

original scan

 

 

 

Chroma Polaris for sale

Rhodes Chroma Polaris for sale
CHECK OUT EBAY OFFERS

 

 

 

side view behind view chroma polaris made in japan


manual

- beautiful sound
- Midi implementation

manual

- damn heavy
- technically fragile

comment


REVIEW "wow! great sound and character ... one of the best polyphonic machines eve, sadly it requires special technical cares."

 

 

COMMENTS

 

 

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fender chroma polaris 4.0 out of 5 based on 27 ratings. price €600