Studio Electronics SEM is known as a 'voltage-controlled state variable filter' because it provides simultaneous high pass, low pass and band pass outputs, all with a 12dB/octave slope. The notch is the inverse of the bandpass, achieved by summing the low pass and high pass outputs. This version is a combination of the original SEM filter and the newer design from the OBX, along with improvements by Studio Electronics. It has a modest current draw, evenly from the plus and minus rails.

Potentiometer potential
Three attenuverter and four attenuation pots control the FREQUENCY, RESONANCE, FREQ CV 1, RESO CV, LP HP, INPUT and OUTPUT, delivering smooth, detailed and ever-variable expression.

Switch it up
FULL and HALF strength filter frequency keyboard/voltage tracking, and BP / LP-HP modes.

Patch it up
Seven patch points — 1 V/O, FREQ CV 1, FREQ CV 2, RESO CV, INPUT, BP LP-HP and OUTPUT — jack you in.

  • Module controls

    • FREQUENCY knob: adjusts the frequency (or 'cutoff') of the filter.
    • RESONANCE knob: adjusts the resonance of the filter.
    • FULL / HALF TRACK switch: switches between full and half keyboard/voltage tracking.
    • FREQ CV 1 knob: frequency control voltage 1 input attenuverter.
    • RESO CV knob: resonance control voltage input attenuverter.
    • FREQ CV 2 knob: frequency control voltage 2 input attenuverter.
    • INPUT knob: adjusts the audio input level.
    • OUTPUT knob: adjusts the audio output level.
  • Patch points

    • 1 V/O input: one volt per octave control voltage input.
    • FREQ CV 1 input: frequency control voltage 1 input.
    • FREQ CV 2 input: frequency control voltage 2 input. Get tricky with the second attempt!
    • RESO CV input: resonance control voltage input. Use for shimmers or howling wolf tones.
    • LP HP: low pass / high pass attenuverter.
    • INPUT: audio input.
    • OUTPUT: audio output.
  • Physical specifications
    • Size: 12hp
    • Module depth: 39.7mm (with ribbon cable attached)
    • Power usage: 23mA @ +12V, 23mA @ -12V

Product Specs

Condition
Brand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand Studio Electronics
Model SEM
Categories Eurorack

Accepted Payment Methods

Shipping Policy

Ships from Franklin, WI, United States to:

Continental U.S.
$0.00

***Please note, many of the products we sell are shipped in the manufacturer box. These boxes will often have images, model numbers, and other text that indicate the contents inside.

UPS Ground Shipping
Most orders are shipped within 1 business day via UPS Ground services. You will be emailed an order confirmation as soon as your order is received by Reverb and processed by Kraft Music. A tracking number is also sent to you when your package leaves our warehouse. The tracking number will enable you to easily find out the delivery status of your package. Over-sized items may ship via a freight company (see below). USPS may be used for very small items.

Freight Delivery
Most freight orders are shipped within 1 business day! Due to the weight and size, some orders will be required to ship via truck (freight). The following business day, after your order leaves our facility, you will receive an email from Kraft Music, with tracking information relating to your shipment. Once the shipment is checked in at your local shipping hub, the trucking company will call you to schedule a delivery appointment. Delivery will not be attempted until an appointment is scheduled with you. You will need to be present when the shipment is delivered. Deliveries take place on weekdays (Monday - Friday), during regular business hours.

***IMPORTANT NOTE: Please test your item before getting it fully assembled. For example, with digital pianos, unpack the keyboard portion, power it on and test all the keys. It is very rare that these items arrive with defects, but it is still a good idea to test it before spending time getting it fully assembled. Use caution when unpacking your purchase from its box, as some needed parts and pieces may be packed in and amongst the packing material. Be sure to save the carton and all packing materials, in case of a needed return. Do not write on the box and do not discard.

Due to many of our dealer franchise agreements, we are not able to process most International orders.

Any questions you may have are welcome... simply send an email to reverb@kraftmusic.com, or call 800-783-3368. We know you'll be satisfied with your experience at Kraft Music!

Tax Policies

Taxes are charged in the following regions either by the seller, per their tax policy, or by Reverb as a Marketplace Facilitator:

Georgia
Illinois
Louisiana
Michigan
North Carolina
Alabama*
Arizona*
Arkansas*
California*
Colorado*
Connecticut*
District of Columbia*
Idaho*
Indiana*
Iowa*
Kentucky*
Maine*
Maryland*
Massachusetts*
Minnesota*
Nebraska*
Nevada*
New Jersey*
New Mexico*
New York*
North Dakota*
Ohio*
Oklahoma*
Pennsylvania*
Rhode Island*
South Carolina*
South Dakota*
Tennessee*
Texas*
Utah*
Vermont*
Virginia*
Washington*
West Virginia*
Wisconsin*
Wyoming*
*Marketplace Facilitator State. Reverb collects tax on the sellers behalf. Learn More

Return Policy

Return Window

This product can be returned within 30 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.

Refunds

Buyer receives a full refund in their original payment method less any shipping costs.

Special Conditions

If you are not satisfied with a product, you may return it for a refund, store credit, or you may want to exchange it for another product. Return shipping costs are your responsibility and if your original order qualified for free shipping, that uncharged shipping amount, as stated in your order confirmation, will be deducted from your refund. If you would like to either upgrade or keep your refund as a store credit with Kraft Music within the 30 day return period, we will split the previously mentioned return shipping costs with you.

Simple shield
Buy With Confidence
Reverb Protection has you covered. We provide a safe community for finding the gear you want.

Kraft Music

Franklin, WI, United States
Joined: Mar 2016

Seller Achievements

Accepted Payment Methods

Credit Card
Reverb Bucks
Paypal
Affirm

As low as $21/month

Studio Electronics Boomstar Modular System Modstar SEM Filter Module
$229
+ Free Shipping