View Single Post
Old 25th Aug 2019, 1:43 pm   #30
mhennessy
Dekatron
 
Join Date: Jul 2007
Location: Evesham, Worcestershire, UK.
Posts: 4,241
Default Re: Fan speed control by OP of amp.

I've said it before, and I'll say it again: they are lovely looking amplifiers

At a glance, it does look like there's not enough places for the air to escape from underneath the amplifier top-plate. As an experiment, I wonder if one end could be lifted, just to create a temporary outlet? The opposite end to the connector, of course. That might help to prove that point. Also, more outlets should result in lower noise (as the air velocity through each outlet is lower). Obviously, a grille is recommended for safety if the holes get above a certain size.

Although it's a worthwhile experiment, I personally wouldn't use the switched-mode power supplies to run the fans - they might cause interference and other problems. A fan takes hardly any current really. Certainly not in the context of all those heaters.
mhennessy is offline