Babysitter for Papa's Koan

[Zen Mod]

early morning in Grizlyland

and Papa posting in Papaland ......

 

[peppennino]

Babysitting in progress 😀

 

[Zen Mod]

don't forget a towel, to tuck amp while it's sleeping

🙂

 

[peppennino]

I'll search in my bag, near the cristal fish bowl

 

[peppennino]

Ok, mine is not a Koan but it's however a Zen thingie 😀

Jim's disclaimer:


So, let's start a BabySITter 😀



Find a proper-sized MDF board



Make a 12cm hole at center



Do some electrical trick



Voilà



Spray the primer



Enjoy blue light and wait for tomorrow

Yours,
Ford Peppennino Prefect

 

[Zen Mod]

6L6 ............

 

[peppennino]

Change of program 😀

Didn't like the MDF and wanted something a bit larger...
So, back to work:











It works fine! Thanks to ZM for the idea, since here summers are very hot!

 

[Zen Mod]

wakootalian!

those bottom plate feet screws are too small

 

[codyt]

I’m pretty sure ZM mentioned this in the past, but it can also be worthwhile playing around with a makeshift ‘gasket’ to optimize airflow. I used some cheap 20mm foam for sealing windows. Works nice

 

[Zen Mod]

in fact, it is not necessary

I tried and it's all the same ............. unless in case that your amp is really scorched, needing any help, badly

(which reminds me ........... post #126, Babelfish XA252 / Babelfish XA252 SIT / Babelfish XA252 SET )

 

[codyt]

My bottom plate doesn’t have much ventilation, so in my specific instance the extra bit of pressure has helped. That said, any air that isn’t blowing through the chassis is blowing around the chassis/heatsinks. Cooling either way. You’re right (as usual…) 🙂

 

[peppennino]

Supersilent (not the band) 😀

 

[codyt]

Nice! What kind of fan and supply voltage did you use?

 

[Zen Mod]

is there a need to say that platform feet doesn't need to be so high ?

inch or so is more than enough

but, if you like them that way -

 

[Zen Mod]

btw. only McIntosh with green lit tubes is more funny (chose nice word, here) than Ocean of Blue

 

[codyt]

Yeah, I’d have a hard time with those green tubes. On the other hand, I LOVE blue cars! 😀

 

[peppennino]

is there a need to say that platform feet doesn't need to be so high ?

inch or so is more than enough

but, if you like them that way -

At least two inches, with the fan not embedded in the wooden board
By the way I'll put a DAC downside.
@Cody: 12cm computer fan for cabinet. Sleeve bearing type. 12Vdc with a simple SMPS

 

[peppennino]

And yes, Automan gave it to me

 

[Zen Mod]

simplest way of decreasing voltage ( and you'll need it) is just put enough 1N400* in series - each eating almost 0V6

you can put them inside SMPS, or wherever - under the board

 

[peppennino]

Thanks