Constructional Difficulty: Easy to moderate
The OMS-410 is a companion module to the MOTM-410 triple resonant filter module. It adds powerful new features to the superb Synthtech module. No component changes are needed to the MOTM module, and the two modules are connected together by two removable connectors hidden behind the front panels.

The OMS-410 allows you to add three new features to your MOTM-410
1. You can add three individual CV inputs to control each vactrol element of the MOTM-410. Each input is sent through a reversible attenuator, with a control knob on the front panel. This allows incredible tonal sweeps and modulations to be created. Its like having three separate voltage controlled filters in one module.
2. The MOTM-410's two internal VC-LFOs can now be accessed from the front panel. The OMS module shapes the LFO's outputs to give smooth sinewaves. Two separate VCAs allow these LFO waveforms to be level controlled individually or together. You can now use the MOTM-410 as a twin VC-LFO, whilst still using the MOTM-410 as filter module.
3. The three audio outputs of the MOTM-410 are combined to produce an outstanding stereo output. These outputs are especially designed to drive long cables and can be tailored to produced ordinary line levels for direct connection a to a mixer.
The standard module is designed to fit into a 1U MOTM style panel. It requires the usual MOTM or Oakley power supply.
The OMS-410 and the MOTM-410 are connected together by one or two connectors. The number of which is determined by the options chosen. The connectors are 0.1" Molex or MTA and can be simply removed if the modules need to come apart at anytime. The wires from the connectors are soldered to sepcial key locations on the MOTM-410's PCB. No component changes are required to the MOTM-410.
Parts prices
OMS-410 issue 3 PCB
................................... 19GBP
OMS-410 issue 3 pot kit ................................. 9GBP
OMS-410 issue 3 pot bracket kit
................... 3GBP
The Pot Kit contains the correct type and quantity of Spectrol 248 potentiometers to complete 1 module.
The Pot Bracket Kit contains the correct type and quantity of Oakley-Spectrol pot brackets and extra Spectrol nuts required to complete 1 module.
Click here for full price list and ordering details. All prices include VAT at UK rates. Shipping and postage is additional to these prices.
Project Downloads
User Guide for issue 3 PCBs only
Front Panel database
A Schaeffer front panel can be made for a 1U wide OMS-410 module . The database can be found here OMS-410.fpd. To read this file you will need a copy of 'Frontplatten designer' from Schaeffer. The program also features on-line ordering, so its now even easier to buy your panels from Scheaffer.
The company are based in Berlin in Germany and will send out panels to anywhere in the world. Delivery to the UK normally takes around ten days. For North American users you can also order your Schaeffer panels from Front Panel Express.
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