The SeM20 is a classic 2 pole state variable Eurorack filter based on the Oberheim SEM's filter with the resonance section of the MS20 grafted on for extra bite and the input section modified to overdrive the single, much like the OSCar. The Dual SeM20 manages to put 2 in a 16HP module without sacrificing any of the features or the sound of the original.
Input Section
The Dual version has a 4 input mixer section. Each channel can be assigned to either filter, to both for either stereo filtering or to get the Korg MS-20 or OSCar dual filter effect. The 4 input mixer and 8 outputs make feedback loops and self oscillation patches extremely easy and almost required.
When the input is at 5(noon) it's full volume. Beyond 5 the filter will begin to overdrive and distort, just like the original SeM20.
Single/Dual Switch
In Single Mode both filters act independently with their own Freq pots and 2 attenuated CV inputs each. They are 2 full featured SeM20 filters in one module. In Dual mode the upper Freq pot and CV 1.1/1.2 control both filters. This is great for stereo filtering and would work especially well with the new stereo effects from Audio Damage. There is an offset pot for the second filet when it's in Dual mode and this works like the spread feature on the OSCar. You can feed the same input to both filters, offset the second one and then use the 1 CV inout or the Freq pot to sweep both.
This filter can go from a very smooth Oberheimy sound to aggressive, overdriven acid dipped screeching .
It doubles as a pretty good kick drum, too.
12db High Pass, Low Pass and Notch filter
6db Band Pass
Self oscillation when the High Pass is fed into the input
4 cv frequency inputs with attenuators
Notch Pass balance sweeps between High and Low Pass
width: 16hp
current draw: 70mA
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
Shipping times
Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.
There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Saturday shipping
If you're in the UK and you order before 15:00 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
Product Overview
The SeM20 is a classic 2 pole state variable Eurorack filter based on the Oberheim SEM's filter with the resonance section of the MS20 grafted on for extra bite and the input section modified to overdrive the single, much like the OSCar. The Dual SeM20 manages to put 2 in a 16HP module without sacrificing any of the features or the sound of the original.
Input Section
The Dual version has a 4 input mixer section. Each channel can be assigned to either filter, to both for either stereo filtering or to get the Korg MS-20 or OSCar dual filter effect. The 4 input mixer and 8 outputs make feedback loops and self oscillation patches extremely easy and almost required.
When the input is at 5(noon) it's full volume. Beyond 5 the filter will begin to overdrive and distort, just like the original SeM20.
Single/Dual Switch
In Single Mode both filters act independently with their own Freq pots and 2 attenuated CV inputs each. They are 2 full featured SeM20 filters in one module. In Dual mode the upper Freq pot and CV 1.1/1.2 control both filters. This is great for stereo filtering and would work especially well with the new stereo effects from Audio Damage. There is an offset pot for the second filet when it's in Dual mode and this works like the spread feature on the OSCar. You can feed the same input to both filters, offset the second one and then use the 1 CV inout or the Freq pot to sweep both.
This filter can go from a very smooth Oberheimy sound to aggressive, overdriven acid dipped screeching .
It doubles as a pretty good kick drum, too.
12db High Pass, Low Pass and Notch filter
6db Band Pass
Self oscillation when the High Pass is fed into the input
4 cv frequency inputs with attenuators
Notch Pass balance sweeps between High and Low Pass
Technical Specs
Shipping Details
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
Shipping times
Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.
There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Saturday shipping
If you're in the UK and you order before 15:00 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
