Dr Bonkers Guitar Cab-Oddities™ Volume 19: SULA 4X12 Guitar Cab IR Collection
Dr Bonkers presents the SULA 4X12 Guitar Cab IR Collection based 1968 Sunn® Sceptre™ 200w 4X12 Guitar Amp Cab. This cabinet included 4 Sunn® Guitar Transducer™ badged Jensen® C12N™ 12 inch 50 watt speakers featuring 29 oz ceramic magnets (Code # C8579 3 220842) manufactured in the 42nd week of 1968 in Chicago, Illinois, USA. The closed cabinet was designed with a historical anomaly called an infinite baffle.
Dr Bonkers impulse response file tribute to this cab is featured in both Fractal Audio Systems® file format, WAV format, and a buy both bundle.
Pull down on the menu below to see details on each.
Below where it says “Description” in bold type, please click below on the arrows or grayed out words to hear sound samples or see more information (see images below main product image if this is not clear- one is mobile view, one is desktop computer view).
Demos of the guitar cab impulse response (IR) file in action:
All tabbed information is for both WAV and Fractal Syx format Cab IR Packs unless otherwise noted.
WAV version is available for immediate purchase. Fractal Syx version is available for immediate purchase. Combo is available for immediate purchase.
Please click above to hear sound samples or on the arrows or tabs to see more information.
Use of Sunn®, Sunn Amplification®, Sunn Sceptre™, Sunn Guitar Transducer™, Jensen®, and C12N™ are owned by their respective corporate entities and mentioned on this site under the terms of fair use. Use of Line 6® and Helix™ are owned by Yamaha Guitar Group, Inc® and mentioned on this site under the terms of fair use. Use of Fractal Audio Systems®, AX-8™, Axe-FXII™, Cab Lab3™, and Ultra-Res™ are owned by Fractal Audio Systems® and mentioned on this site under the terms of fair use. Any band names or artists mentioned in a purely historical & educational context are owned by their respective corporate entities and mentioned on this site under the terms of fair use. All such mentions do not connote any endorsement, approval, or use of Dr Bonkers Soundlab LLC® products. The trade name of HypeReal™ in the context of Cabinet Impulse Response Packs as well as the actual files for sale on this website are the intellectual property of Dr Bonkers Soundlab LLC® and may only be used under the terms of the EULA.
Impulse Response (IR) File Inspired Cabinet Info (Click Here)
Inspired Model Recorded as Impulse Response (IR) Files:
1968 Sunn® Sceptre™ 200w 4X12 Guitar Amp Cab.
Cabinet Speakers Loaded in Model Captured:
4 original Sunn® Guitar Transducer™ badged Jensen® C12N™ 12 inch 50 watt speakers featuring 29 oz ceramic magnets (Code # C8579 3 220842) manufactured in the 42nd week of 1968 in Chicago, Illinois, USA.
The speakers are very different from modern C12N reissues in that there is no woofy bass, but there is tight mid bass, gentle mid range and a treble spike to keep the guitar heard in the mix.
All 4 speakers in this cab have very different sounds individually but blend together to make a wonderfully versatile sounding cab (top right and top left speaker IRs are incredible sounding, bottom right speaker IRs are very mid focused, and bottom left speaker IRs are very vintage sounding in a limited frequency response or special effect track sort of way).
Microphones Used (Click Here)
Microphones Used in This Cab Impulse Response (IR) Cab Pack:
AKG 451 EB
AKG C414 XLS
AKG D-12vr (used in passive mode)
Audio Technica AT4033
Blue Electronics “The Ball” (used in “active mode”)
David Bock Audio – Soundelux U97
Sennheiser MD 421 II
Sennheiser MD 441
Past Brand Cabinet Users (Click Here)
Here are some famous players who were rumored to have historically used a similar brand of cabinet in the past as reference and educational purposes for your tone quest or inspiration:
Leslie West – Mountain
Bob Weir – The Grateful Dead
Cub Koda – Brownsville Station
Nokie Edwards, Gerry McGee, Don Wilson – The Ventures
Founded by The Kingsman’s bassist, Norm Sundholm, Sunn® attempted to give bassists a better bass amp and cabinet experience by fusing Dynaco® ultra linear power amp sections with Fender® preamp topography as their starting basis, as well as using sealed cab folded horn technology with upgraded speakers. For years in the late 1960’s and early 1970’s, Sunn® gear was the choice of many pros, but then they fell out of favor by the early 1980’s, were later bought by Fender® in 1985, and then eventually shuttered in 2002. Sunn® enjoyed a resurgence by stoner rock and doom metal bands in the 1990’s but that was not enough to save the brand.
The Sceptre™ 4×12 was first produced in 1968 through the early 1970s as a response to pressure from some touring guitarists who wanted a 4×12 cabinet rather than various configurations of 15 inch or 10 inch speakers. The Sunn® team realized they could layout the 12 inch speakers in a staggered S shape within a new infinite baffle that fit neatly in the already designed 200s™ sealed cabinet in order to economize the number of different cabinet designs fabricated and inventoried. If you look in the tab of speaker pictures on this page, you will see to the right hand side of the speakers, one wall of the cabinet has the cut outs for the folded horns that were a feature of the 200s™. This cab would seem to be an early example of a Sceptre™ 4×12 guitar cab according to a few sources I referenced.
By the mid 1970s, Sunn® migrated to a more conventional looking 4×12 guitar cabinet design.
Wav & Combo Pack File Compatibility Info (Click Here)
Please check the documentation of your Yamaha® THR-100™, Kemper® KPA™ (Kemper Profiler Amp), Line 6® Helix™, Boss® GT-1000, Two Notes® Torpedo™, Atomic Amps® Amplifire™, Digitech® GSP 1101™, NuX® Cerberus™, AMT® Pangaea CP-100™, Mooer® Radar™, Positive Grid® Bias™, or other hardware or software based Impulse Response (IR) loader to see which WAV file format is correct to use.
All company trademarks for Fractal Audio Systems®, Soldano®, Soldano Custom Amplification®, Slant 4X12™, Eminence®, Legend V1216™, Yamaha®, Line6®, Boss®, Kemper®, Two Notes®, AMT®, NuX®, Positive Grid®, Mooer®, Atomic Amps®, & Digitech®, are owned by their respective corporate entities and mentioned under fair use.