Dr Bonkers Guitar Cab-Oddities™ Volume 20 DLTA 4X12 Guitar Cab IR Collection
Dr Bonkers presents the DLTA 4X12 Guitar Cab IR Collection based on a Harry Kolbe Soundsmith® Concert™ 800w Straight 4X12 Guitar Amp Cab Impulse Response (IR) files. This cabinet included 4 Eminence® Delta Pro 12A™ 12 inch 400 watt 8 Ohm speakers manufactured in USA. These speakers were the Eminence® interpretation of Electro-Voice® EVM12L™ speakers. The cabinet is a unique design built like the proverbial tank by Fusco Cabinets.
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 Harry Kolbe Soundsmith®, Concert™, Fusco Cabinets®, Electro-Voice®, EVM12L™, Eminence®, and Delta Pro 12A™ 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.
The same type of cabinet loaded with Electro-Voice® EVM12L™ speakers was used by:
Paige Hamilton – Helmet
Billy Graziadei – Biohazard
Bobby Hambel – Biohazard
Photo of Eminence® Delta Pro 12A™ speakers (Click Here)
Here is a speaker view of the Eminence Delta Pro 12A in the cabinet:
Please note that I did not take extensive pictures of the interior of the cab for a bunch of reasons:
This was an artist’s cab, so I was not about to pull speakers out of the cab to photograph them.
The cab is front ported with a sealed back design.
Using my camera, I could see the construction had some design features that were rather proprietary and I wanted to respect the intellectual property of Harry Kolbe’s ingenious design.
Historical Info (Click Here)
Harry Kolbe was an amp tech in lower Manhattan, New York, USA who started an amp repair and custom design shop in 1978, then came to prominence in the late 1980s and 1990s for his modifications of Fender® amps into 2 channel amps with overdrive and Marshall® JTM-45™ as well as JCM 800™ amps with high gain, high headroom, and low noise with channel switching modifications.
Famous players whose amps he modded included Lee Ranaldo of Sonic Youth, Billy Duffy of the Cult (who loaned it to Steve Jones of the Sex Pistols on the reunion tours). Paige Hamilton of Helmet. Harry Kolbe also did mod work for the Rolling Stones, Allan Holdsworth, Yngwie Malmsteen, Steve Stevens, Al DiMeola, Jim Hall, Joan Jett, Bad Brains, Buckethead, Robben Ford, Goo Goo Dolls, John Abercrombie, Joe Satriani, Chick Corea, Aerosmith, Mike Stern, Kim Stone, Talking Heads, and Jon Spencer.
At some point during the time he designed this Concert™ cab and had Fusco Cabinets do the contract manufacturing for the custom builds. There are not a lot of these cabinets out in the wild since the retail price was around $2,000 at the time. The cab is very stiff construction and heavy (between 130 and 150 lbs, depending upon the speakers loaded in it), like a classic Hiwatt® on steroids but with his own ingenious design twists/innovations. The Concert™ cab projects a loud and authoritative sound with tight bottom and clearly detailed mid range.
The 1X12 cabs he designed are much more likely to be found occasionally for sale as used on Ebay, Reverb, or TGP emporium.
So what happened and why isn’t Harry Kolbe more of a regularly used name among guitarists today? Between 1998 and 2012, Harry battled some major health issues and kept rather quiet about them. All levels of players had customer service issues that spread across the guitar and gear forums like wildfire. He reopened Harry Kolbe Soundsmith® in 2012 and is still around as of the date I write this.
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.