Upgrading Genesis II's

racerxnet

Well-Known Member
Apr 30, 2014
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Hi Gary,

I found the mid band selector switch bad on the PCB board that I am working on. It works intermittently and was part of the problem. This is the 3 position selector switch as shown on the left of the picture. If wiggled, the mid panel drops out completely. It is thru hole / edge mounted. Do you have replacements??

I soldered 2 x 300uf 5% NP capacitors in parallel for 600uf as you suggested.

Paul MCGowan sent a reply to me regarding the feedback settings, so I will mark where I am at and test accordingly.

Please let me know about the selector switch.

Thanks,

Mark
 

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racerxnet

Well-Known Member
Apr 30, 2014
41
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All the Rel-caps are available for about $190.00 per side. The Vishay VHP3 half ohm current sensing resistor can be had for $79.00 ea. Wafer switch for $10.00 and the NP 300uf 100v 5% x 2 caps (600uf total) for $5.00 ea. That covers all parts on the crossover other than the potentiometer for the Genesis 2 speakers.


http://www.erseaudio.com/Products/NonPolarElectrolytic6DF?range=51,52,52
http://www.vishaypg.com/docs/63005/vhp3vhp4.pdf
http://www.reliablecapacitors.com/
https://www.digikey.com/products/en?mpart=212P0112N332RA&v=119




I'll post the results of the servo amp adjustment when done.

Mak
 
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Alrainbow

Well-Known Member
Dec 12, 2013
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Good morning Gary
Is there a servo I can use to update mine ? The amps have been rebuilt and tested they work fine now. it’s the old servo I would love to replace some how. as for the cones I’ll bet they are no where near as stiff as what you use today.
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
Sep 6, 2010
5,480
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545
Seattle, WA
www.genesisloudspeakers.com
Mak, Cool! Next time anyone with a Genesis II has a problem with their crossover, I'll shoot them over to this.

Al, the Infinity used a different servo design. Hence, I have no idea if any current servo technology will work. To use the current Genesis servo and woofers, you would have to do some extensive woodworking!!
 
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Alrainbow

Well-Known Member
Dec 12, 2013
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NYC , USA
Mak, Cool! Next time anyone with a Genesis II has a problem with their crossover, I'll shoot them over to this.

Al, the Infinity used a different servo design. Hence, I have no idea if any current servo technology will work. To use the current Genesis servo and woofers, you would have to do some extensive woodworking!!
So I got that answer lol.
 

racerxnet

Well-Known Member
Apr 30, 2014
41
4
213
Have you tried to contact Magic Marksey. Aka Michael Allen Marks for the servo amp. Though it sounds like you already have one.
 

Alrainbow

Well-Known Member
Dec 12, 2013
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522
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NYC , USA
Oh yes good guy me infinity lol. new magnets he is the man he is now making new tweeter diaphragms last I heard
Mids soon too. Great guy. He got me the number of the man who designed and made the amps. Great stories about Arnie and I acually know how many amps in pairs he made lol. the new 2000 watt IRS v amps. He made 100 pairs and was paid n delivered. The amps before were 1500 watts at 2 ohms if I recall. Arnie was getting asked to update many of the its 1/2/3. Never made a 4 bad luck number lol. Arnie wanted more power fir his new woofers now at 1/2 ohm
He told Arnie if I double the transformers and add more caps 2000 watts could be fine on same chassis. So it was fine. New magnets on drivers a new woofer tower amp n newer servo and cross over fir them. Mine were updated late just before the end of its v. Real IRS V have a brass plaque on the base with a number. No one who updated got this. So while many rumors say how many. One thing for sure is it was only 100 amps ever made including updated ones. so a good guess is about 70 or so. As 30 amps were delivered right before the line was stopped. He was paid as it was better for Arnie to trash them financially. Mark gave me some of this but the amp guy sealed the deal
 

racerxnet

Well-Known Member
Apr 30, 2014
41
4
213
I cannot follow what your angle is with the reply. Have you considered trying the bass column interconnects as used on the genesis 2 to help coherency.
 

racerxnet

Well-Known Member
Apr 30, 2014
41
4
213
Gary,

I want to thank you for the schematics for the Bass servo interconnect. It sure does make a big difference in cohesion, clarity, and timing. Here is what I used.

1: Mogami 9ft x 2 / W2791 24ga. shielded cable
2: Neutrik NC3MXX x 2
3: Vishay 71-PTF561k.02%T10 x 2 1K resisitor
4: Vishay 71-PTF6530K000AYEK .05% 30K resistor
5: Blue Jeans cable gold plated spades x 4

Thanks,

Mark
 
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gfroman

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Dec 29, 2012
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I use to own the Genesis 200's and also the II's, about 15 years ago.
They were great speakers!
 

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racerxnet

Well-Known Member
Apr 30, 2014
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Yes,
Genesis makes a very good system. I see that you have the later 200 series and the 2.5. Mine are the 4 column wing Genesis 2's. Quite a bit different to the later 200's and 2.5's

My next upgrade will be all the capacitors in the servo amp.

Mark.
 
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garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
Sep 6, 2010
5,480
73
545
Seattle, WA
www.genesisloudspeakers.com
Gary,

I want to thank you for the schematics for the Bass servo interconnect. It sure does make a big difference in cohesion, clarity, and timing. Here is what I used.

1: Mogami 9ft x 2 / W2791 24ga. shielded cable
2: Neutrik NC3MXX x 2
3: Vishay 71-PTF561k.02%T10 x 2 1K resisitor
4: Vishay 71-PTF6530K000AYEK .05% 30K resistor
5: Blue Jeans cable gold plated spades x 4

Thanks,

Mark

Glad that worked for you. Loudspeaker coherence is extremely important and our job is to design a loudspeaker with a crossover (and active bass servo-amplification) that sounds like a single driver without a crossover.
 

racerxnet

Well-Known Member
Apr 30, 2014
41
4
213
Gary,

Do you still have the tweeters available for the Genesis 2? Please let me know.

Hope all is well with everyone. The Genesis forum has been pretty quiet lately.

MAK
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
Sep 6, 2010
5,480
73
545
Seattle, WA
www.genesisloudspeakers.com
Yes - tweeters are still available for the G-II. I am mostly over on Facebook these days but I still monitor posts to this forum.

To order, send us an email on our customer service page on our website.
https://www.genesisloudspeakers.com/support/
 
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racerxnet

Well-Known Member
Apr 30, 2014
41
4
213
One more question and I will hop over to facebook. What is the correct way to disassemble the tweeter from the panel. I have 3 outer screws and 4 inner screws on the front. I assume that it is removed from the back side to access the soldered wires. Not sure to remove the 4 and have the magnet distort and rip the diaphragm.

Thanks,

Mark
 

garylkoh

WBF Technical Expert (Speakers & Audio Equipment)
Sep 6, 2010
5,480
73
545
Seattle, WA
www.genesisloudspeakers.com
Do NOT remove the 4 screws. They secure the faceplate, diaphragm and the magnet structure.

You need to loosen the zip ties holding the wires in the back, and give the wires some slack. undo the 3 outer screws, pull the tweeter out and de-solder.
 

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