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| Make |
MOTM |
| Model |
MOTM-410 Triple VCF & OMS-410 |
| Description |
MOTM-410 Triple Resonant Filter and Oakley Sound OMS-410 Expander modules. Both built by Richard Brewster. Comes with MOTM format power cables and cable for connecting the OMS-410. Tested and fully working with minimal rackrash. The OMS-410 has a few modifications done by Richard Brewster, see notes at bottom.
The MOTM-410 contains three voltage-controlled bandpass filters and a dual voltage-controlled sine-wave LFO. The module is based on the Korg PS-3100 filter structure. It uses the same “vintage” components: Vactrol resistive elements for a smoother, liquid phasing sound, and JRC4558 bipolar op amps.
However, the control section has been updated to include:
- Voltage-controlled LFO Rate (0.02Hz to 100Hz)
- Voltage-controlled LFO Depth (0-100%)
- Individual filter outputs
- Master SWEEP control voltage
The MOTM-410 can be used as a fixed filter bank. Just set the DEPTH to zero. Because narrow filters are used, vocal formants can be created using the independent center frequency controls.
The on-board LFO structure contains two “detuned” voltage-controlled LFOs, with one LFO running 20% slower than the other one. The LFOs have true sinewave outputs for best sweeping effects. You can use the panel controls, or plug in up to three seperate control voltages (SWEEP, RATE and DEPTH)!
Another unique LFO feature is the MODE switch. It controls how the 3 filters are swept as:
Single – All three filters are swept together by LFO #1.
Dual – Filter #1 sweeps with LFO #1. Filters #2 and #3 sweep with LFO #2.
Dual Reverse – Filter #1 sweeps UP with LFO #1, Filter #2 sweeps UP with LFO #2 while filter #3 sweeps DOWN.
The MOTM-410 has three separate audio outputs, which can be used to create frequency-dependent stereo panning. Using three inputs on your mixer, you manually pan Filter #1 LEFT, #2 to CENTER, and #3 to RIGHT. The LFOs then sweep the stereo field, based on the frequency content of what you are playing. Or, turn off the LFOs and use the fixed filter to “direct” the sound to a specific mixer channel, again based on input frequency.
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 these 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.
Modifications to OMS-410:
A) Housed in a Stooge panel
B) Three panel switches added for mode control
C) Two of the reversible attenuators can be switched to apply to a MOTM-410 filter, or to be used as a separate VCA with the LFO output jacks.
D)The third reversible attenuator can be applied to the third 410 filter, or can be used as an input for VC of the level of VCA 1/LFO 1 output. |
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| Age |
n/a |
| Weight |
n/a |
| Condition |
Very good |
| Location |
Uk |
| Vat |
Not from a VAT-registered business. But VAT / duty may be due if importing from outside your trade bloc. |
| Quantity |
1 item is available from the owner |
| Options |
User manual : No |
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Service manual : No |
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First owner : No |
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Original boxes : No |
| Plug type |
Plug not required |
| Voltage type |
Power supply not needed |
| Status |
Item is still available |
| Sale type |
The item is on the auction rooms |
| Ending on |
09/11/2024 |
| Category |
Synthesizer (Modular) |
| Serial number |
N/A |
| Sphere reference |
# 28468 |
| Statistics |
Created on : 29/10/2024 |
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Changed on : (Not updated) |
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Published on : 29/10/2024 |
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Displayed : 61 time(s) by members and guests |
| Safety |
All electrical items sold in VEMIA are deemed to be trade sales. No warranty of electrical safety is given or implied. Many items are vintage and would not pass current electrical safety standards. It is the responsibility of the buyer to ensure that items are safe to use in their future environment - if necessary by using the services of a professional. |
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Prices and conditions  |
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The following section gives you the prices as well as shipment and payment conditions associated with the item. Payment is always requested in GBP. Converted price is shown for information and converted with Sphere standard currency rate.
Shipment and Payment links gives you access to an extended description of our rating :
| Start price |
100 GBP |
| Converted price (1) |
100 GBP |
| Shipment |
International or local shipment to pay |
| Packing costs |
0 GBP |
| Payment |
Full pre payment needed |
| Auction bid step |
10 GBP |
| Auction highest bid |
110 GBP |
| Converted highest bid |
110 GBP |
| Leader or winner |
avg-76 |
| (1) Currency conversion |
Note that conversion rates were last adjusted on 10th October 2024 at 10:56 CET. They are there to give you a rough guide to the bid price in your currency. Please check for a more up-to-date conversion at https://www.x-rates.com/calculator.html. The bid price will be the actual price in pounds (GBP) at the moment the auction closes. This will be roughly converted to your currency for your information.
For technical reasons, we are unable to update the conversion from GBP to Euro during the auction, although it may change at any time. If you are in the euro zone please check the current rate at https://www.x-rates.com/calculator.html
Payments must always be in GBP. For more info please see the FAQ about exchange rates.https://spheremusic.com/Winfaq.asp?Question=91. |
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