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Old 19th February 2013, 09:47 PM   #1371
WalterW is offline WalterW  Netherlands
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No, they are Austerlitz KS300.6
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Old 19th February 2013, 10:19 PM   #1372
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Originally Posted by WalterW View Post
No, they are Austerlitz KS300.6
Did you buy them direct from austerlitz?
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Old 20th February 2013, 12:35 AM   #1373
WalterW is offline WalterW  Netherlands
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No, I bought them from www.distrelec.nl . It's now a Swedish company, Elsa or so..
Heatsinks are around 50 Euro's a piece...

Walter
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Old 20th February 2013, 12:59 AM   #1374
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are you thinking of elfa?
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Old 20th February 2013, 01:00 AM   #1375
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Quote:
Originally Posted by oiphy View Post
@ noSmoking. care too tell/show more of your water cooling rig??
Hi oiphy,
If this gets going I'll start a new thread for it so, here's the PLAN,
I will use a radiator with a small fan hopefully whisper type,and I have a thermal switch that is settable to control the temp of the sinks,I am still determining the optimum temp for the fets to operate at I know the limits ,but where's the "sweet spot" for temp vs bias,
The heatsinks themselves came from ebay auctions they are all copper and were called server heatsinks,I cut them in half and covered them with light weight copper sheet,I tried a spray bay and a tube projecting water in the middle of the backside onto the heat sink ,it didn't care so now I run in one end and out the other ,temp over the fet mounting surface is the same temp,so good enough,I used .5 ' copper tube in and out,I soldered it all together with hard solder no leaks so far!
I bought several pumps most of them would have to be out of the listening area due to noise whine,I found these (pic) at harbor freight ,I left them plugged in and really couldn't hear them running at all,so use something like them ,not the motor frame to pump types ,I also cut a piece of aluminum to act as a clamp for the front of the fets,I haven't done this but I am going to shave the fronts of the fet till it's at lease smooth and maybe machine a small piece of aluminum to go in the space between the clamp and the heatsink to transfer as much heat off the front too,
I use neoprene tube no problemswith it so far, use a heat gun to warm it up on the ends and it will slip right on the in/out tubing,
I have the bias at 1.2 and all is well sinks are at 110 degrees,
Transformers are warm so I hope it's all about right,
Comments,Ideas are welcome
NS
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Old 20th February 2013, 01:06 AM   #1376
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2 more pics of the actual heatsink and the big clamp,I thought about a c clamp but these stay tight,lol.
A make shift resavoir for now nice pickel bucket,lol.
NS
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Old 20th February 2013, 08:40 AM   #1377
WalterW is offline WalterW  Netherlands
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Yep, it's Elfa Distrelec.
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Old 20th February 2013, 09:21 AM   #1378
WalterW is offline WalterW  Netherlands
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Quote:
Originally Posted by N-Brock View Post
Finished wiring up a V2 monoblock last night. I am in the process of powering up the first time right now. I'm kinda guessing that P3 gets set near the middle of its range.

Anyhow, here are some photos. New UKToecutter boards, diyA chassis.

The plan is to get it up and running (biased) by tonight.

I'll post more details a bit later when I've got a spare moment and the amp's done.

-Nelson
Hi,
Does anybody know the dimensions of the small PCB?
Thanks
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Old 20th February 2013, 10:03 AM   #1379
tinitus is offline tinitus  Europe
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Originally Posted by WalterW View Post
Hi,
Does anybody know the dimensions of the small PCB?
Thanks
The diyAudio Store
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Old 20th February 2013, 10:11 AM   #1380
WalterW is offline WalterW  Netherlands
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Oh, sorry I wasn't clear which board I ment... It's this board I'm referring to...
And yes, I wish they were in the DIYAudio store
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