4K,6K,8K Switch Mode PSU UPGRADE

[kilmister]

Hey Max!

Does PSU contain 250V rail for bargraphs?
Propably it will work 230VAC also?

-Paavo

[sintech]

I doubt it does.

[xmax]

$200 extra for the 250v, and yes it will run on 240vac.

[kilmister]

Excellent!

Do you have any future plans to make other PSUs also, like for computer and Moving Faders (audio and logics)?

-Paavo

[xmax]

I heard somebody is making a new computer (on gs) but yes we do want to make moving fader supplies,
I currently don't have the data. if you can provide it, email me at normandruceaudio@gmail.com
thanks! N

[xmax]

Ok guys, the unit has been tested on a 32ch 4K E desk here in Detroit, with great success!
It LOWERED the noise floor by 7.87dBu (20hz to 80khz) and power consumption about 40%
This version does use fans but they are very quiet compared to the original, It has 3 digital
meters with trim a pot underneath them to make calibration fun instead of the safety hazard of
the old supply. The unit also has 2 output bics and It should be able to power a 56ch desk no
problem (it's rated to operate up to 25 amp, a 48ch uses 14amps) you can also turn it on and
off as much as you like without powering up the buckets one at a time. We can make a unit to
power a 96ch desk for $4500. I will warranty the unit for 2 years and the modules are user
replaceable at $400 for the audio rails and $200 for logic. The price for the base unit is $3200
and $3400 for the plasma version. We are now taking pre-orders for the first 10 at $2900 these
units will be delivered in march. pics coming soon. you will be able to read about this units travel
and torture test in Nashville in TapeOp via F. Ried Shippen. Be well. normandruce@gmail.com
normandruceaudio.com
vintagessl.com

[Artur D'Assumpção]

wow! This is very good news!

Great work! I'm eager to hear from the first owners!

vintage SSL lives forever!! 

[kilmister]

Congrats! Loosing allmost 8 dB's ain't easy task at allready low noise levels.

One questions still:
Are voltages measured at output of the PSU?
IMO one and only place to measure voltages is at center section, no matter what is feeding juice to the console. If voltages are measured at output of the PSU it does not take account of small amount of R in cables and pcb's. With this high currents it really means when +/-18V has to be in tolerance of 100mV.

-Paavo

[StefanNowak]

Really keen to hear if there have been any changes to the console's headroom and sound..

How heavy is the unit? I'm curious what it would cost to send to Australia.

Stef.

[Showcase]

Good news!

Looking forward to see how it performs aswell!
Would be nice to know how much noise the fans does, like a PC?

[jimlfixit]

Stefan asked about delivery charges for the switch mode supply. If it is any guide, I've looked up a 15kg parcel, 60 x 50 x 20 cm sent from the UK to Australia and the cost is £70 plus insurance (only up to £1000 though) for a 4-5 day service.

Obviously, it would be different if sent from the US and the weight may not be 15kg (probably less I guess) but it gives you some indication of the price perhaps. As Stefan knows, delivery times can be quite quick these days. I sent him some patchbays on a Friday from the UK and he had them by Monday and that was without any premium paid for a faster service!

[xmax]

The unit weighs 22lbs. The voltages on the front panel are the voltages at the supply, so yes you can get over a half volt
drop to the desk from the cables so they need to be measured at the center section then corrected at the supply, the meters
just make it much easier to tweak the voltages (fun compared to calibrating 2 of the old units!) and as you can see the 6.5
volt meter is there because that is the voltage you read and tweak when calibrating according to the manual. (diff. between
+18 and logic "13") since the unit has massive current capability and massive storage and filtration the sound of the desk
should only improve. The 7.87 dBm I gained in signal to noise when testing on this local 4032 could have came from the
fact the filter caps could be going in its aging supply or some sort of ground issue. Our supply has chassis (earth ground)
and audio 0v on the back via banana jacks so you can ground it any way you want. The pictured unit is a prototype.
The factory unit will be 3 inches deeper and will probably have the vents on the sides. I am selling the first ten at
$2900 for the base unit, $3000 for the plasma version. In order to get this price you will need to paypal $1000 deposit.
the noise specs in these pics are from a poorly maintained E series with all channels on and god knows what patched in.
I just measured it exactly as it was. Thanks for the push! N

[xmax]

7 dBu less noise and about 40% less watts. with a bigger desk I think you will see more than 50% savings
after you remove all the extra heat from the p.s. room.

[xmax]

And the unit auto switches between 120/240 v.a.c.

[xmax]

The fans are quieter than one of the 3 old supplies fans (I am using one to cool the test rig) I will get a db
rating, I think its quieter than the old G5's If I remember right.