WELCOME TO PLANET 2500

 
 
 
 
ARP 2500 UPGRADES AND MODIFICATIONS
2500 / 2000 SERIES CABINET UPGRADES
 

MAIN POWER SUPPLY REBUILD -------------------------------------225.00

Much of the noise and cross-talk in a stock 2500 is due to the age and configuration of the power supply, not due to the matrix switches! The power supply in your 2500 is 33 to 40 years old. Linear power supplies have an average shelf / operating life of about 20 years. Chances are that your power supply is not up to spec. This can result in excessive noise, ripple, and instability rendering the instrument useless in a modern digital/midi studio. Without any de-soldering, you can disconnect your existing 2500 power supply and send it to CMS for a complete rebuild to ARP factory specifications.

 

LAMP POWER SUPPLY REBUILD------------------------------99.00

The 2500 features a separate 12V regulated lamp power supply that we can service also. Minimal de-soldering is required to send in your lamp supply.

 

MAIN POWER SUPPLY UPGRADE----------------------------379.00

Much of the cross-talk, noise and pitch instability in a 2500 system can be eliminated by upgrading the power supply to a modern high speed, low noise unit designed specifically for high fidelity audio applications. Even if you rebuild your 2500 main supply, there are limitations inherent in the older designs that permit noise and VCO waveforms to contaminate the power supply rails and subsequently distort the audio signal. To remedy this, we recommend the power supply upgrade. This mod replaces your unit with a high power, highly stable, military spec power unit with remote sense regulation. The overall sound quality, oscillator purity, stability and keyboard tracking are noticeably improved. You must send your cabinet to CMS to install the power supply upgrade.

 

POWER DISTRIBUTION UPGRADE-------------------------449.00

Take your 2500 upgrade to the limit by having CMS upgrade your power distribution configuration. We install a high quality power distribution wiring harness that supplies a ultra clean power supply signal to each module in your system. This is the ultimate in low noise, high speed, high fidelity modifications you can install in a ARP 2500. You must have the CMS power supply upgrade to install the power distribution upgrade and you must send your cabinet to CMS for this upgrade.

 
1000 SERIES MODULE SERVICING

REPAIR AND RESTORATION OF ARP 1000 SERIES MODULES

CMS offers a full array of repair and restoration services for the ARP/Tonus 1000 series modules. Call or email Phil at CMS to send in your 1000 series modules for repair and restoration.

O.E.M. PARTS STOCK

We have an extensive stock of original equipment manufacturer parts to restore your modules to brand new ARP factory specifications.

EXPERT FACTORY CALIBRATION SERVICES

Many of the calibration points on the ARP 1000 series modules do not have trimmer potentiometers. Calibration of ARP 1000 series modules involves a process of testing the module, testing and selecting specific components and soldering them in place, then re-testing the module to factory specifications. CMS uses the original ARP factory test documents and blueprints directly from the inventor - Alan R. Pearlman and the former ARP service manager - Clarke Ferguson, for the selection and calibration process.

 
     
 

ARP 2500 AUDIO CLIPS

Since the ARP 2500/2000 is so rare, here are some sound samples to illustrate this great sounding synthesizer.

#1 - 2500 Duet in stereo - 2/10/06

This is a live cut - no overdubs. The thick bass sound is a 2515 main cabinet with 7 vco's. The surprisingly realistic piano sound is a 2508 wing cabinet with 3 vco's and 3 multimode filters. The controller was a Rhodes/ARP Chroma via a Kenton Pro-2.

Ennio Morricone's - Once Upon a Time in the West

This was quickly arranged on a PC using sonar. This uses the same 2500 patch as above. I added some 2600 percussive rhythms and a Roland 808.

 

More sound clips to come

©2006 Phil Cirocco

 
     
       
 
ARP 2500 PHOTOMUSEUM
 
 
 

 

1023 variations, replica

 

 
 

1026 replica

 
 
     
 
     
 
   
       
 

ARP 2500 RESOURCES

 

This early version of the ARP 2500, the 2002 was made in 1970

2500 Matrix Switch Color Code

Running a ARP 2500 / 2000 from a MIDI converter

 
e-mail: filter@discretesynthesizers.com
phone: 912-727-2195 ©2004 Phil Cirocco