Cabinet as heatsink - wise idea?

[ginetto61]

Hi to Everyone
I have searched through the forum but i didn't find a specific thread amps using the cabinet metal as heatsink
I understand it's a very British solution But is it a sane solution? Class A aside of course
For sure good heatsinks are quite expensive
I would be very grateful if you could provide me with some advice

 

[planet10]

The early NAIMs did just that.

https://www.t-linespeakers.org/oddsends/box/index.html

NAIM 160/250 chassis.

dave

 

[tomchr]

It depends on the power dissipation. If your circuit is dissipating only a few watt you can often get away with using the (aluminum!) chassis panels for the heat sinks. But at higher dissipation you're better off with an actual heat sink. You'll need the surface area to dissipate the heat.

These could be helpful:
https://www.heatsinkcalculator.com/blog/how-to-design-a-flat-plate-heat-sink/
https://www.heatsinkcalculator.com/flat-plate-heat-sink-calculator.html

Tom

 

[ginetto61]

The early NAIMs did just that.

https://www.t-linespeakers.org/oddsends/box/index.html

NAIM 160/250 chassis.

dave

Hi thank you for the very kind and helpful reply Very famous brand
I think it's a very British solution Sorry also French YBA used that in the past
In car audio is the nor but cabinet and heatsink are integrated