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Author Topic: SSL 4000 G Mods???  (Read 32071 times)

Jim Williams

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Re: SSL 4000 G Mods???
« Reply #30 on: September 24, 2009, 10:21:41 AM »

The small Alps push switches can be had from Mouser for 70 cents @100 pieces. P/N 688-SPUJ190900

For led's,
www.superbriteleds.com

They have most colors and a special incandescent color temp led that is ideal for replacing incandescent bulbs for that old time look. For a modern look, use standard white leds.

For SSL stereo buss amps, I use a matched pair of Hitachi 2SA2545 transistors (1/2 the noise of the LM394) and a National LM6171 opamp at 3600 v/us slew rate, that will open up the mix like after your ears pop landing in a jet. Good caps with quality film cap bypasses are also helpful. Then dump the 074's in the monitor card with LT1359's and then you can hear it. Dump the Roederstein bipolar electrolytics with low impedance polarized units properly oriented. Bypass those with film caps. Replace the 10 uf cap in front of the VCA with 47 uf, then you get some low end and remove some phase shift.
Be happy.
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Jim Williams
Audio Upgrades

Dave Hecht

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Re: SSL 4000 G Mods???
« Reply #31 on: September 24, 2009, 01:38:39 PM »

nicpope wrote on Wed, 23 September 2009 11:16

Dave Hecht wrote on Fri, 29 August 2008 17:11

Keith pretty much nailed it. Couple of things to add. I've seen a few mods to the main mix amps, mostly Burr Brown chip upgrades (OPA2134 or OPA604 as I recall). Nothing spectacular - made a slight difference. Could be done fairly inexpensively if you want to try it.

The most common switch failure I've had is the bus assign switches. Back in the days when SSL supported the E/G series, I'd just swap the cards out. Now,I've started replacing the individual switches. If you've got the later type cards, the switches are individual - the older cards need all 4 replaced. Digikey carries a switch that fits for around $1/ea, so pretty worthwhile to keep the old cards working. Last time I had to find NOS cards for a client they were $42/ea

Dave Hecht


Hey Dave,

Any chance Digikey still carries this part and you would have a part number?

Thanks!


The info I have on the switch is C&K #PHA2UEE (Digikey part # 401-1192)
I got a few from a friend, haven't needed to order them myself, so don't know if they're still available from Digikey, but you should be able to do a search on their website.

Dave Hecht
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nicpope

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Re: SSL 4000 G Mods???
« Reply #32 on: September 24, 2009, 02:29:19 PM »

Jim Williams wrote on Thu, 24 September 2009 09:21

The small Alps push switches can be had from Mouser for 70 cents @100 pieces. P/N 688-SPUJ190900

For led's,
www.superbriteleds.com

They have most colors and a special incandescent color temp led that is ideal for replacing incandescent bulbs for that old time look. For a modern look, use standard white leds.

For SSL stereo buss amps, I use a matched pair of Hitachi 2SA2545 transistors (1/2 the noise of the LM394) and a National LM6171 opamp at 3600 v/us slew rate, that will open up the mix like after your ears pop landing in a jet. Good caps with quality film cap bypasses are also helpful. Then dump the 074's in the monitor card with LT1359's and then you can hear it. Dump the Roederstein bipolar electrolytics with low impedance polarized units properly oriented. Bypass those with film caps. Replace the 10 uf cap in front of the VCA with 47 uf, then you get some low end and remove some phase shift.
Be happy.


Hey thanks for the part number on those switches Jim.

I just put LED's in all of my switches, but I got them from Recycled Audio. Pretty reasonably priced and they have been a pleasure to work with.

I basically need to replace half the bus assign switches in this desk, anyone have any tips for desoldering these things?
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Jim Williams

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Re: SSL 4000 G Mods???
« Reply #33 on: September 25, 2009, 09:58:32 AM »

Hakko 808. Get one from:
www.testequipment.net
They discount them to $180.
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Jim Williams
Audio Upgrades

mobilemozart

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Re: SSL 4000 G Mods???
« Reply #34 on: September 26, 2009, 09:38:14 AM »

Jim Williams wrote on Fri, 25 September 2009 15:58

Hakko 808. Get one from:
www.testequipment.net
They discount them to $180.


http://www.tequipment.net/Hakko808.html
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jwhmca

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Re: SSL 4000 G Mods???
« Reply #35 on: October 14, 2009, 01:33:40 PM »

The Den-on sc7000z is great as well...

Anybody know a good replacement switch for the Dynamics/EQ Channel in switches?

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