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DIY Enclosures - Chassis for Pass Labs Style!

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eboz

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Joined 2006
#1
I've created this thread to get input from everyone on changing the base DIY Enclosures models to be adopted and best accommodate Pass Labs projects. Alright... I admit I myself have taken the SET path, but once I have a prototype, I'm going to have to break-down and build an Aleph-J. 😀😀

What we're looking for here, is mainly heatsink design and integration. My first question, is must the circuit boards be connected directly with the FET's? Because if not, we can mount the FET's on a heatsink that sits outside of the chassis itself, kinda like an "H" style sink.
 
#4
stokessd said:
Holy crap, you are still alive!!! Your website seems to be totally blank and I assumed you have stopped building enclosures for us. Can I still get your previous designs?

Sheldon
Click to expand...

Hey Sheldon 🙂 Yep still alive, sort of. I meant to shut the business down for awhile so that I could be completely finished with my own stock that I was holding. It was a great experience to run this business and do the shipping myself, but the low volume means that it was cutting into my day-job and my ability to handle other projects and business at home.

The website will be down until I have a solid plan to turn out some samples for the parts vendors. The chassis will now instead be sold through another company willing to take inventory of them and sell them. Please see the original thread for ramping up the business again! 😀

http://www.diyaudio.com/forums/vend...new-chassis-manufacturing-company-usa-21.html
 
#7
eboz said:
I've created this thread to get input from everyone on changing the base DIY Enclosures models to be adopted and best accommodate Pass Labs projects......

What we're looking for here, is mainly heatsink design and integration.....
Click to expand...

Maybe something based around the modular Burning amps BA1 & BA2, a 6 deep output, 12 devices on one heatsink, 2 heatsinks per chassis, heatsink rated at 0.1deg C/W, that should cover almost any design :2c:
 
#8
Do the FET or power devices need to be mounted by pcb directly to the heatsinks, or can the power devices be mounted to the heatsink remotely? IE leads from the pcb. Of course you'd want them to be minimal length, but again, I am wondering if the heatsink's surface must be directly integrated to a side panel or inside of it. If leads are okay, then you could potentially have better heat dissipation.

Thanks,
-MW
 
#9
eboz said:
Do the FET or power devices need to be mounted by pcb directly to the heatsinks, or can the power devices be mounted to the heatsink remotely? IE leads from the pcb.QUOTE]

PCB directly onto the heatsink, wiring can cause stibility problems.

eboz said:
I am wondering if the heatsink's surface must be directly integrated to a side panel or inside of it.
Click to expand...

The heatsink should 'be' the side panel for maximum convection, never inside, not enough air flow.
Click to expand...
 
#10
Good news!

I am working on an extrusion profile that should integrate nicely with the diyenclosures chassis. There will be some small drawbacks where your own diy minor machining is required, but it is very minimal. It would be - drill one hole to reach one chassis PEM nut, and drill your own mount points for the power components. The heatsink would replace the diyenclosures sidewalls directly. 😀 Now the only question - how much will these blocks of alum cost! I'm afraid to know... still if you are wanting the very best heatsinks for Pass DIY, then you will be willing to make the expenditure I would think.

-MW
 
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