In article ,
"N_Cook" wrote:

isw wrote in message
]...
In article ,
Sofa Slug wrote:

N_Cook wrote:
Ancient_Hacker wrote in message

...
You might consider adding a small DC fan. A 12V fan running off a
diode and capacitor off the (supposed) 6.3VAC heaters will be running
relatively quietly at V.




I'd half considered a fan but there is no obvious place to put it and
without cutting a hole in the steel chassis or the wood cabinet it
would
just be circulating the air, unless mounted outside the chassis ,
directed
over the bottles. Good idea about the heater supply use.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




How about "tube coolers"? I've never used them, but if there's no room
for a fan...
http://www.partsconnexion.com/audiog...AGES/PEARL.htm

They could get the heat away from the tubes, but it'd still be in the
box. By themselves, they'd probably make little difference.

Isaac


Unfortunately I cannot contact the owner , no replies so far.
I intend cutting a 3 x 2 inch hole in the cab top , masked with grill.
Positioning it asymmetrically off-centre in both senses so above the big
bottles and clear of internal encumberances so a 2 inch fan could be fixed
under the grill , later, if required. And the pcb perforations pf course

If there is not a corresponding hole in the bottom, or the bottom of the
rear panel, you should do that too. Convection can do wonders.

Isaac