THE CMS EURO RACK SYSTEM

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This page has some useful information regarding the use of our Euro-Rack 2500 modules.
 
         
 
         
   
UPDATED 04/05/2022
   

1050 MIX-SEQUENCER UPDATE:

There is a critical update available for very early versions of the CMS 1050 Mix-Sequencer module. This update improves the operation of the illuminated push-buttons. This update only applies to 1050s with serial numbers 3 through 11. You can send the module to CMS for a free upgrade or we can supply a upgrade kit. Contact us by email at filter@discretesynthesizers.com

 
 
         
     
     
 

WE USE SWITCHCRAFT TINI JAX IN OUR 1000 SERIES MODULES -

The CMS 1000 series modules feature high quality Switchcraft input and output jacks. Other industry names for these jacks are “Tini-Jax” or .141” miniature phone jacks. Years ago we had to make a choice between Switchcraft Tini Jax, and the much cheaper asian made euro jacks. Given our background as the main service center for ARP instruments, we chose the exact same jacks ARP used in production. These jacks are the exact same high quality, American made jacks that were used in the original ARP 2600, ARP Sequencer and the ARP 2500.

The use of Switchcraft Tini Jax plugs and cables are highly recommended. You can make your own cables using Switchcraft end plugs.

Buchla also uses Tini Jax so Buchla cables work well with our modules.

Factory made molded Switchcraft cables are hard to find mainly because they are very expensive and Switchcraft requires a very high MOQ. A better solution is for you is to make your own, or to have your tech make them. If you can solder, you can easily make them up yourself.

Order Switchcraft plugs model #750, #755 (plastic handle) or #780 (metal - more expensive) from Mouser Electronics or Digi Key Electronics.

Marshall Electronics in El Segundo, CA sells low noise Mogami microphone cable #W2368. http://www.mogamicable.com/category/bulk/microphone/unbalanced/

 
     
         
 
       
 

MASTER CV AND GATE INPUT MOD -

Some Euro-Rack cabinets do not have buss input jacks. There is a very simple way to modify just one of the 1004s CV input to be the master buss input jack. There is also a simple way to modify one of the 1032's input jacks to be the master gate input for the system. This is the way I have my machine set up. This method will work better with a small isolated system like the one shown above. This may not work with large, complex cabinet setups. This also assumes you are using a standard Doepfer power distribution back plane.

INSTRUCTIONS: You will need a soldering iron, solder and a small length of thin solid wire.

Flip the module over so that the module front panel is facing down. Locate the jack on the bottom right. (This is the bottom left jack if you are looking toward the front panel) There are 4 pads to each jack. Solder the wire in place so that the top pad is connected to the bottom pad. Make sure the wire does not touch the left or right pads.

This jack is now the master input jack. If it is a 1004 Pearlman VCO module, it is the master CV input. Connecting this jack to your MIDI to CV converter CV output will distribute the CV voltage to all VCOs and filters in your system.

If it is a 1032 Dual Envelope module, it will be the master gate input.

Do this to only one 1004 and one 1032 per cabinet. Do not do this to the other 1004s and 1032s in the cabinet.

 
       
 
                 
   
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e-mail: filter@discretesynthesizers.com
phone: 912-727-2195   ©2019 Phil Cirocco