The Magnificent One

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#44
Hi Gary,

Does having the left woofer tower in front of the wings and the right at the back of the wings pose any problems as to volume levels traveling to the listener or is there some adjustment needed?
Since the woofer towers roll off below 120Hz, and the wavelength of 120Hz is nearly 3m, such asymmetry is no issue. No phase problems, and no volume problems - especially since each woofer tower can be independently controlled. I actually like more asymmetry with the woofer towers so as to control room bass modes and nodes.
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#45
Gary,
Is there an optimum room size for the G1.2s? Since you have a 2.2 Jr, can you also create a G1.2 Jr?
For the G1.2, I like a minimum of 6.5m wide and 10m long. Height is no problem because of the line source. As long as the speakers can clear the ceiling. With the narrow-winged G1.2, 5m wide is enough, but you still need the length for deep bass to develop.

I don't have any plans to develop a G1.2jr. If the room is much smaller than 5m wide, then I recommend a smaller speaker.
 

jadis

Active Member
Apr 28, 2010
6,204
0
36
Manila, Philippines
#46
Since the woofer towers roll off below 120Hz, and the wavelength of 120Hz is nearly 3m, such asymmetry is no issue. No phase problems, and no volume problems - especially since each woofer tower can be independently controlled. I actually like more asymmetry with the woofer towers so as to control room bass modes and nodes.
Thanks for the info, Gary. That's good to know. :)
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#47
To really get a sense of the scale of these speakers, a group of audiophiles taking a souvenir picture is essential. Except for the cabinet, every aspect of the oldest Genesis 1 can be upgraded to the latest - the tweeters, midrange, crossovers, woofers, servo-controlled amplifier. One owner is even contemplating taking out all the original hook-up wires and replacing with the latest teflon/silver/copper wires I used on the Dragon.

Group.jpg
 

LL21

Active Member
Dec 26, 2010
10,548
2
38
#48
Stunning, Gary, stunning...congrats.
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#49
For most owners of the large Genesis loudspeakers, it is the last pair of loudspeakers they will ever own. However, after 20 years, some of them do hanker for an upgrade - but what would be better than a Genesis? A newer generation Genesis!

This owner of an original Genesis I from 1995 upgraded the midrange/tweeter panels to a Genesis 1.1 about 8 years ago. He also added my new servo-bass cables at that time, but retained the original 12-channel servo amplifier.

This year, he upgraded to (almost) a Genesis 1.2 (sans the twelve additional rear-firing 12-inch woofers). Almost every significant part except for the midrange ribbon and the cabinet was changed. It took two audio technicians, a woodworker, plus my personal supervision, and the customer himself making useful suggestions to do a perfect job. One excellent reason for keeping the original 20-year old cabinets is that the wood is gorgeous. It is difficult these days to find veneer wide enough to have such large, beautiful "cathedrals" in the veneer pattern these days. The cabinet itself was in excellent condition, never been moved and in a climate-controlled environment.

2 pallets.jpg

The Magnificent One is a huge system - and even the upgrade is substantial. This upgrade included all new tweeters, plus a new wire harness of my silver/copper/teflon wiring; twelve new 12-inch servo-controlled woofers (again plus completely new wiring); and the new 12-channel servo-controlled amplifier from the Dragon. A total shipped weight of almost 300kg (660lbs).

The upgrade process takes a minimum of two whole days with a couple of experienced technicians. By the the end of the first day, all the old drivers have been removed (on the floor to the left) and most of the 56 new tweeters already installed soldered to the new wire harness.

Installing tweeters.jpg
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#50
With a whole bundle of 12awg silver/copper wires, the soldering iron the techs brought with them the first day couldn't even hope to properly solder the tweeter harness to the Cardas rhodium/gold binding posts. So, it was the second day before we could continue. A big, fat soldering iron was found, and we put the midrange/tweeter panel back together.

We spent the rest of the morning also installing the 6 rear tweeters on the brackets.

Soldering connections.jpg

One big job that I didn't take any pictures of was making the holes of the woofer towers larger to accommodate the new woofers. This took several trips to Home Depot for routers, bits and an industrial vacuum. We didn't anticipate having to do this as on all previous installs, the woofer hole was large enough, and the original woofers were recessed into the cabinet.

This pair was the 2nd pair of Genesis I's built by the original Genesis, and the woofers sit up on the cabinet. The woofer holes were just 3/16" too small for the new woofers. Luckily, the owner had a friend who custom-builds motorcycles. It took all night, outside in the cold so that we didn't make a mess of the room.

Drilling.jpg

Back in the room, carefully vacuuming as we drilled holes for the new woofer wiring harness.

Stuffing.jpg

Even the stuffing inside the cavities get replaced as I couldn't be sure that there was exactly the correct amount already inside each cavity. The stuffing was precisely weighed in the factory, packaged and sent for easy installation.

Almost done...... the woofers being installed.

New woofers.jpg
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#51
By late afternoon the second day, the system was re-built, the 12-channel Servo-Controlled bass Amplifier set-up so that I could listen to the system to make sure that it performed correctly. A couple of the owner's audiophile friends came over and we spent 4 hours spinning tunes. The local dealer who provided the manpower and service support was also there to help out with an experienced ear.

Ready for listening.jpg
 

Johnny Vinyl

Member Sponsor & WBF Founding Member
May 16, 2010
8,550
0
36
Calgary, AB
#53
Talk about stunning! My, my! Is this a purely digital setup Gary?
 

JackD201

[WBF Founding Member]
Apr 21, 2010
10,989
8
38
Manila, Philippines
#54
Gary the guy in the brown T holding the vacuum cleaner has a profile like Arnold's. :)
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
#55
Talk about stunning! My, my! Is this a purely digital setup Gary?
Yes - pure digital. He's got Mac/Amarra/Ayre as his main source of music. When you come over, bring CDs and SACDs.

Gary the guy in the brown T holding the vacuum cleaner has a profile like Arnold's. :)
Nope, this guy's younger, beefier, and better looking :D
 

JackD201

[WBF Founding Member]
Apr 21, 2010
10,989
8
38
Manila, Philippines
#56
Hahahahahahaha! I'm gonna tell on you! :D
 

Johnny Vinyl

Member Sponsor & WBF Founding Member
May 16, 2010
8,550
0
36
Calgary, AB
#57
OK......bringing these:

Peggy Lee - Bewitching-Lee (CD) (mastered by Steve Hoffman)
Billy Joel - The Stranger (Sony SACD) (mastered by Ted Jensen)
Keb' Mo' - Keb' Mo- (MFSL Hybrid SACD) (mastered by Rob LoVerde)
David Gilmour - Live In Gdansk (best version of ECHOES ever)

:D

3 more:
Stevie Ray Vaughan - Texas Flood (MFSL Hybrid SACD)
Supertramp - Crime of the Century (A&M /Master+ Audio Series)
Pink Floyd - Wish You Were Here (EMI/AP Hybrid SACD)
 
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es347

VIP/Donor & WBF Founding Member
Apr 20, 2010
1,564
1
38
Midwest fly over state..
#58
MAC monoblocks...sweet! This is one of the most enjoyable threads I've read on WBF...well done Gary!
 
Jul 25, 2012
2,553
0
36
NY
#59
Just beautiful, Gary.

That was quite a job to upgrade.