Chassis Discussion

[Gianluca]

Yes, the slots are used by our supplier to put them in their anodizing tanks

 

[ukhopeful]

Bravo Gianluca! Steel brackets on Dissipante now has M3 captive nuts instead of using self-tapping screws

 

[wtnh]

Front panel grounding

I had a DUH! moment recently when I noticed that my digitally controlled preamp which I had built in a 2U Pesante was getting glitched by static; that is the Arduino microprocessor inside would sometimes go haywire when I touched the front panel (it is winter here and static is very present).

I have always bonded the baseplates and back panels of the chassis I use to AC ground for safety. However, I neglected to bother with the front aluminum panels, since I assumed - incorrectly - that the mounting screws would take care of it.

WRONG! The paint on the side panels is so good, that the screws are completely insulated and the front panel "floats".

Scraping the paint off of the back of one of the side flange holes and adding a star washer solves this, but you also need to do this at the rear of the enclosure as well. In fact, all painted (and anodized) metal parts need to be bonded to ground.

FWIW - hope this is helpful info.

 

[RussellKinder]

Anodized aluminum

Very true. An anodized surface is aluminum oxide, which is definitely not conductive.
--Russell

 

[yaduck9]

I am changing out my F5 boards for an F6 and I find that the transformers on the F6 boards are a bit too close to the inputs and outputs mounted on the rear panel of the case.


Is it possible to order a new rear panel for a Deluxe 4U case?


Thanks for your time.


Bob D.

 

[astromo]

yaduck9, check the store under chassis accessories. You should be able to find what you're after.

 

[yaduck9]

Thanks



The store didn't have what I needed, but I was able to source it through another vendor.



But, thanks for the quick answer.

 

[Joel Wesseling]

Thermal Resistance rating of the extrusions, slimline 2U, for example - Are they available?

 

[brian92fs]

The heatsinks entry has the ratings. You can also visit Modushop site. They have the ratings listing in their descriptions.

 

[astromo]

Beat me Brian. Nice work.

 

[Joel Wesseling]

I'm Looking for the ratings of the quasi heatsinks.
They're not rated, found this. The Amazingly DIY Friendly "Quasi Heatsinks" – diyAudio Store

 

[DSP_Geek]

I see dissipation numbers for the 40 mm heatsinks, but where are those data for the slimlines?

 

[Gianluca]

The Amazingly DIY Friendly "Quasi Heatsinks" – diyAudio Store

They're far too thin to be called "heatsinks" with a straight face. Certainly they aren't a real heatsink, so please assume they will do very little in terms of cooling! But they would be effective at drawing away a little bit of heat from a relatively cool-running component you don't want to run warm (we've seen people use them successfully with gainclones, YMMV). We aren't providing a cooling rating for them - please use your discretion when deciding what you are going to do with them.

 

[Joel Wesseling]

For DCG3, Salas said "easily" enough dissipation with the quasi's!

The space saving is temping for a 50w apex power amp. I'll see if Apex guys can help me out.

 

[6L6]

There is a very, very large difference between the cooling requirements of a linestage compared to a power amp. The extrusions are not heatsinks, as Gian says.

Depending on them to have any power dissipation in a situation like that is risky.

 

[Joel Wesseling]

There is a very, very large difference between the cooling requirements of a linestage compared to a power amp. The extrusions are not heatsinks, as Gian says.

Depending on them to have any power dissipation in a situation like that is risky.

I hear you!

 

[WBS]

I want to thank and compliment everyone at Modushop for the excellent work customizing the faceplate of the Deluxe 4U I received today! These guys are top notch, providing much higher quality than anything I've received when trying to save a few dollars by ordering from china.

Gianluca, you're awesome! Keep up the good work!

 

[Gianluca]

Thank you Vince, very happy to hear that!



Enjoy your new chassis and let's hope to meet at BAF 2021!

 

[Joel Wesseling]

Is it possible to see a picture or sketch of the new style chassis handle?

If I order Pisante 2U with 10mm front panel will new style handle fit? I'm certain it will, but thought I should ask anyway.

Thanks!

 

[Gianluca]

Yes, the new handles will fit all our 10mm panels. We have not decided the design yet but they are going to require 2 holes per side instead of 4