Product Description:
The Boomstar 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 12 dB/oct 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 de... Click To Read More About This Product
Add to List
{displaySku=J46992000000000, invMsgAvailability=New Item!, availableDate=Tue Dec 17 16:46:57 PST 2019, invMsgPreOrder=true, warranty=true, savingPercent=0.00, isPreOrder=false, stickerText=Preorder, isFreeShippingButLowPrice=false, pimStatus=R1, inCheckoutPromo=false, inventoryStatus=1002, condition=New, availableInStoreOnly=false, MSRPRange=false, invMsgBuyToDemand=false, name=, skuMsrp=1099.0, displayId=1500000031299, invMsgBackOrdered=false, isShipsInternational=true, status=preorder, MSRP=1099.0, invMsgPromiseDateDt=Tue May 11 10:04:56 PDT 2021, isFreeShipping=true, stickerDesc=Preorder, newPrice=1045.0, stickerURL=null, skuPrdPriceVisibility=1, isPriceDrop=false, invMsgCutOffTime=Sun Apr 11 08:00:00 PDT 2021, twoDayShippingSourceStatus=MFI=0, stickerClass=null, stickerUrlLink=null, isOnSale=false, visibilitySalePrice=1045.0, invMsgVendorDropShip=false, serialized=false, invMsgPromiseDate=05-11-2021, salePrice=1045.0, skuPriceVisibility=1, invMsgDetail=This item is available to reserve now. You will not be charged until the item ships., kitCarouselSkuIds=null, invMsgOverSized=false, isLessonsEnabled=false, statusText=Pre-Order, typeCondition=New, YourSaving=0.0, partNumber=BS-SEM, prop65=null, listPrice=1045.0}
1,045.00
USD
1
6-Month* financing available
Guitar Center Gear Card
Special 6-month financing +
$52 back in rewards. Valid through 12/31/2021
Get DetailsAbout Special Financing Offers
Opens in new window
Delivery to United States
Free delivery to
Deliver to
Change Location
Tue May 11 10:04:56 PDT 2021
05-11-2021
Sun Apr 11 08:00:00 PDT 2021
New Item!
New Item!
false
MFI=0
true
Share your location
Free delivery to
Deliver to
Change Location
New Item!
This item is available to reserve now. You will not be charged until the item ships.
Email me when this is in stock.
preorder
Delivery to United States
Free delivery to
Deliver to
Change Location
Tue May 11 10:04:56 PDT 2021
05-11-2021
Sun Apr 11 08:00:00 PDT 2021
New Item!
New Item!
false
MFI=0
true
Share your location
Free delivery to
Deliver to
Change Location
New Item!
This item is available to reserve now. You will not be charged until the item ships.
Email me when this is in stock.
preorder
Delivery to United States
Free delivery to
Deliver to
Change Location
Tue May 11 10:04:56 PDT 2021
05-11-2021
Sun Apr 11 08:00:00 PDT 2021
New Item!
New Item!
false
MFI=0
true
Share your location
Free delivery to
Deliver to
Change Location
New Item!
This item is available to reserve now. You will not be charged until the item ships.
Email me when this is in stock.
preorder
{"product":{"sku_rep_id":"site51500000031299","gc_pro":false,"sku_id":"J46992000000000","sku_display_id":"1500000031299","rep_id":"site51500000000024816","download":false,"price":"1045.00","checksum":"462768565200","name":"Boomstar SEM","id":"J46992","displayId":"1500000000024816","stock":"preorder","brand":"Studio Electronics"},"dept":"Keyboards & MIDI","category":"Synthesizers & Sound Modules","subcategory":"Synthesizer Modules","pageName":"product_detail"}
{"loop":false,"lazyLoad":true,"jqueryLazyLoad":true,"rewind":false,"slideBy":"page","dots":true,"responsiveBaseElement":"#item_page_rr1","responsive":{"0":{"items":2},"568":{"items":3},"768":{"items":4},"900":{"items":5},"1158":{"items":6},"1340":{"items":7},"1500":{"items":8}},"nav":true,"itemElement":"li","stageElement":"ul"}
- Description
- Reviews
- Q & A
Overview
The Boomstar 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 12 dB/oct 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 SE. It has a modest current draw, which it pulls evenly from the plus and minus rails.
This filter is a 'State Variable' circuit, which is an analog computer model of a pendulum. When the resonance is increased, the "damping" or stabilizing of the circuit is actually decreased. This makes the pendulum swing more wildly. If it is hit hard enough, it will swing all the way to one side and 'stick' there, what we call 'bonk out'.
Many sound designers like the sounds that can be gotten as it goes into and out of 'bonk out', so Boomstar has not made the filter 'idiot proof' by limiting the input level and resonance amount. If you don't like it, limit your input level and/or resonance amount. Otherwise, go wild! It won't hurt the circuit.
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 complex 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 direct the deepest manipulation.
Features
All Controls and Patch Points- FREQUENCY – Adjusts the frequency, or cut-off of the filter.
- RESONANCE – Adjusts the resonance of the filter.
- FULL HALF TRACK – Switch between full and half keyboard/voltage tracking.
- FREQ CV 1 – Frequency control voltage 1 input attenuverter.
- RESO CV – Resonance control voltage input attenuverter.
- LP HP – Low Pass / High Pass attenuverter.
- INPUT – Adjusts the audio input.
- OUTPUT – Adjusts the audio output.
- 1 V/O – One volt per octave control voltage input.
- FREQ CV 1 – Frequency control voltage 1 input.
- BP OUT – Band Pass Output. No cable patched, BP passes through the mains.
- RESO CV – Resonance control voltage input.
- INPUT – Audio input.
- BP LP-HP – Switch between Band Pass and Low Pass - High Pass modes.
- OUTPUT – Audio output.
Details- Size - 12hp
- Depth - 39.7mm with ribbon cable attached
- Power Usage - 32mA (+12 / -12)
Pro Coverage
Guitar Center's Pro Coverage
Pro Coverage gives you added warranty protection for your gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Click To Read More About This Product.
Pro Coverage includes
- Accidental damage protection
- Expedited repair or replacement
- Free shipping (for returns or repairs)
- 100% coverage for commercial use
- Extended price protection
- No lemon guarantee
- Free transfer of coverage to a new owner
- Repair costs covered for up to five years from date of purchase
- Repair authorization-toll-free by phone or via the web
{"loop":false,"lazyLoad":true,"jqueryLazyLoad":true,"rewind":false,"slideBy":"page","dots":true,"responsiveBaseElement":"#item_page_rr2","responsive":{"0":{"items":2},"568":{"items":3},"768":{"items":4},"900":{"items":5},"1158":{"items":6},"1340":{"items":7},"1500":{"items":8}},"nav":true,"itemElement":"li","stageElement":"ul"}
true
true
totalReviews: 0
/pdp/reviews/productReviewsDisplay4.jsp
Loading....
true
true
false
{
"api_key": "7ace46e7-b415-4f39-a5d3-14e4a1f0c0f1",
"locale": "en_US",
"merchant_group_id": "17265",
"merchant_id": "508516",
"page_id": "J46992",
"review_wrapper_url": "https://www.guitarcenter.com/write-review/pdp?pr_page_id=___PAGE_ID___",
"ENABLE_CONTENT_COLLECTION_MODAL": false,
"REVIEW_DISPLAY_LIST_TYPE": "CONDENSED",
"REVIEW_DISPLAY_PAGINATION_TYPE":"VERTICAL",
"style_sheet": "https://static.guitarcenter.com/cmn/brand/gc/productionCss/pr_override_display4.css?vId=ecmd-2021.3.1-1a&cb=6",
"components": {
"ReviewSnippet": "pr-reviewsnippet",
"ReviewDisplay": "pr-reviewdisplay"
,"QuestionSnippet": "pr-questionSnippet",
"QuestionDisplay": "pr-questionDisplay"
}
}
Write a Review
{"id": "J46992",
"categoryId":"site5CGC",
"name":"Boomstar SEM",
"pageUrl":"/Studio-Electronics/Boomstar-SEM.gc",
"thumbnailUrl":"https://media.guitarcenter.com/is/image/MMGS7/Boomstar-SEM/J46992000000000-00-180x180.jpg",
"hasFeatures":"0",
"isAccessory":"0",
"message":"",
"value":"1,045.00",
"priceMin":"1,045.00",
"priceMax":"1,045.00",
"msrp":"1,099.00",
"productVisibilityMSRP":"1",
"restockPrice":"",
"openBoxPrice":"",
"clearancePrice":"",
"isPlatinum":"0",
"priceSavingsMaxPrice":"0.00",
"priceSavingsMaxPercent":"0",
"inventory":"0",
"brand":"Studio Electronics",
"reviewStarImageUrl": "https://static.guitarcenter.com/img/brand/gc/cmn/Sprit-Sm-Stars.png",
"reviewStarRating":"0.0",
"reviewStarRatingInteger":"0",
"reviewHowManyReviews":"0",
"usedOrNew":"new",
"discontinued":"0",
"onOrder":"0",
"clearance":"0",
"canBeSold":"1",
"accessoryCategories":"site5LJS,site5HAR",
"stickerText": "Preorder",
"isVintage": "0",
"outletonly": "0",
"checksum":"462768565200",
"priceVisibility": "1",
"itemType": "New"}