Genesis Advanced Technologies SuperSub Subwoofer

Ron Resnick

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Jan 25, 2015
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Gary Koh, founder and CEO of Genesis Advanced Technologies, has been working on a new subwoofer, the SuperSub, consisting of two 8" drivers and two 12" drivers and two 15" drivers in one box. Gary's servo control system for the drivers is implemented here.

In Gary's words: “It’s not a 3-way crossover, it’s not that that 15s get the lowest frequency. Instead – I managed to integrate all of this to make each of the drivers (15,12,8) move the same amount of air. The excursion is proportional to the area of the cone. It is the most awesome bass I have ever heard. I was nicely surprised.”

It looks like the SuperSub was designed for the Genesis Quartet (successor to the Genesis 200 and 2.2), but it will be interesting to learn if Gary intends this subwoofer to be usable with any full-range loudspeaker.

The SuperSub can be stacked, apparently, to provide four 8" drivers and four 12" drivers and four 15" drivers per side. That would be a whole lot of woofing going on!

Interestingly, I think Gary is using a high-level signal, tapping the main speaker amplifier's output, to drive the SuperSub's amplifier and servo controllers

Please tell us more about this new product, Gary!

What is your design thinking behind this subwoofer, Gary?

Will the different driver sizes permit smoother integration with full-range speakers?

How, mechanically, would two SuperSubs be stacked?

Is the SuperSub intended for use only with Genesis loudspeakers, or is it designed to be able to be integrated with any full-range speaker?




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Last edited:

LL21

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Dec 26, 2010
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#2
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Ron Resnick

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I knew you would be into this, LL21! :)
 

treitz3

Super Moderator
Dec 25, 2011
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#4
It looks like the SuperSub was designed for the Genesis Quartet (successor to the Genesis 200 and 2.2), but it will be interesting to learn if Gary intends this subwoofer to be usable with any full-range loudspeaker.

Is the SuperSub intended for use only with Genesis loudspeakers, or is it designed to be able to be integrated with any full-range speaker?
Hi, Ron. Based upon my experience with servo subs, while it may be optimized for a particular set of speakers, unless there is a cable specifically manufactured and wired to only pair with a particular set of speakers? A Direct Servo sub will work with any loudspeaker....and quite well too.

Gary is well respected in my book and I still am thanking him every day because years ago, he turned me onto direct servo subs. After purchasing 2 of them to flank the mains, I have never been happier with the end result as to what hits my ears and haven't worked on improving the bottom end ever since.

Congrat's on your new model, Gary! (and your new shop/phone number)

Tom
 
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Ron Resnick

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. . . This is a big sub, bigger than i guestimated based on the cone size and photos. From Gary's Technical Specs on his website:

SuperSub (optional): H 41” x W 26” x D 38"

This makes its footprint 82% bigger than an XLF!
It's bigger than I guesstimated from the photos as well!

I hope it's very heavy!
 

LL21

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Dec 26, 2010
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#6

Ron Resnick

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#7
Yes, that is where I copied Gary's quote from!

Lloyd, it is interesting that in this configuration Gary has the SuperSubs firing side-to-side rather than front-to-back. Hopefully he can tell us his thinking behind that decision.
 

LL21

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Dec 26, 2010
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Given that Andy Payor has done side-firing woofers for years until only recently, I do wonder as well...

What actually intrigued me the most in this article is that Gary has actually eliminated the 2 woofer towers in this configuration. The main speakers we see are actually part of the Quartet, a 4-tower speaker (6' tall each speaker) which sits directly below the main Genesis Prime massive 7.5' tall x 4' wide 4-tower flagship. But in this case the 2 x 6' sub towers are removed and ONLY the SuperSub is being used (which was originally shown as a further add-on to the Quartet).

Clearly, Gary has designed these to crossover across quite a wide range which is intriguing in terms of flexibility as well...if it can be used either as supplementary to the 2 x 6' sub towers or IN LIEU of them...I suppose that bodes extremely well for their ability to be used with other non-Genesis speaker systems?
 

Alrainbow

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Dec 12, 2013
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#9
I had a long discussion on his new subs. that man has the best controlled bass I ever heard. It’s extremely fast yet very powerful. He explained how each of the three sizes has an advantage. Fir him to achieve his Milestone he needed all 3 sizes. my first thought was why not a line source as they have there place in playing louder at greater distances. Where his subs would be disadvantaged, but in hearing them it’s a seemless sound. I could not tell what driver was where or felt integration could be heard. Gary’s monumental bass was achieved over many years. on his line source woofer towers he has rear firing woofers too.
 

Alrainbow

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Dec 12, 2013
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#10
High power sub input is also a discussion I had in noticing my own issues. His reason makes perfect sense to me.
 

LL21

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Dec 26, 2010
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#11
I had a long discussion on his new subs. that man has the best controlled bass I ever heard. It’s extremely fast yet very powerful. He explained how each of the three sizes has an advantage. Fir him to achieve his Milestone he needed all 3 sizes. my first thought was why not a line source as they have there place in playing louder at greater distances. Where his subs would be disadvantaged, but in hearing them it’s a seemless sound. I could not tell what driver was where or felt integration could be heard. Gary’s monumental bass was achieved over many years. on his line source woofer towers he has rear firing woofers too.
Wow...good to know!! Thanks for the insight.
 
Likes: Alrainbow
Oct 26, 2015
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#12
Yes, that is where I copied Gary's quote from!

Lloyd, it is interesting that in this configuration Gary has the SuperSubs firing side-to-side rather than front-to-back. Hopefully he can tell us his thinking behind that decision.
But they really are not firing side to side if they’re only playing low frequencies. At the low frequencies they fire in all directions, as the frequencies are MUCH longer than the size of the woofers so the sound goes in all directions.
 
Apr 20, 2018
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#13
But they really are not firing side to side if they’re only playing low frequencies. At the low frequencies they fire in all directions, as the frequencies are MUCH longer than the size of the woofers so the sound goes in all directions.
To a degree (maybe large) but many find that orientation of direction subs face does make a perceived difference at various listening positions.
 
Oct 26, 2015
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#14
To a degree (maybe large) but many find that orientation of direction subs face does make a perceived difference at various listening positions.
There is a little bit if power response deviance but it also varies with the type of subwoofer a fair bit.

These are bipolar so they don’t get baffle step loss. They will be pretty even. The simplest way to describe facing them the way they do is space connivence and less reflections from main towers.
 
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