HOW HOT DOES YOUR CLASS D AMP GET ?

[makatak]

When I pack away my Ashdown Little Giant after a rehearsal/practice , i rekon I could fry an egg on the bottom of it , the top and sides are relatively cool , ive put stick-on feet to lift the chassis for more ventilation but still hot , is this common with the likes of markbass and Genz Benz as well ? , Ive never noticed the fan coming on and I dont drive it hard either .

[guybrush threepwood]

It sounds like the fan should be coming on... My Markbass was always quite warm after gigs, but I wouldn't describe it as hot.

[Lozz196]

I`ve got two Class D amps, Marshall DBS 7400 and Orange Terror Bass, and not had anything like that. Warm, yes, hot, no. It does sound like the fan isn`t working.

[chris_b]

If you’ve got a fan and it isn’t working then that might need looking at. But some of these amp manufacturers use the case as a heat sink, ie they get hot by design. To my knowledge SWR and Thunderfunk do this.

[Bill Fitzmaurice]

[quote name='makatak' post='1022138' date='Nov 13 2010, 01:22 AM']Ive never noticed the fan coming on .[/quote]That indicates a problem.

[MoonBassAlpha]

The Shuttle 3.0 (no fan) doesn't got hot. A bit warm, that's all.

[BassBod]

EA500 - no fan, never gets warm. EA Micro has fan (always on)...doesn't seem to get warm either...but I guess it will, or it wouldn't have the fan?

[Bill Fitzmaurice]

My Super Fly would get quite hot if not fan cooled, so I added one. I assume that was a lesson learned by Ashdown as well. I'd have the thermistor bypassed to run it constantly, especially as the thermistor seems non-functional anyway.

[dan670844]

[quote name='makatak' post='1022138' date='Nov 13 2010, 06:22 AM']When I pack away my Ashdown Little Giant after a rehearsal/practice , i rekon I could fry an egg on the bottom of it , the top and sides are relatively cool , ive put stick-on feet to lift the chassis for more ventilation but still hot , is this common with the likes of markbass and Genz Benz as well ? , Ive never noticed the fan coming on and I dont drive it hard either .[/quote]

I have a little giant lg1000 driving it hard it only gets warm, never egg frying hot, is the fan coming on when you first fire it up? it should do, maybe the thermostat on the fan isnt working on your unit

[TPJ]

AI Focus 1 gets quite warm to the touch but has been like that for years with no problems. I think it's designed to dissipate heat with the case.

[markstuk]

You could contact Ashdown and ask them... They're pretty responsive... Try Guy Morrel at [email protected]

Cheers


Mark

[quote name='makatak' post='1022138' date='Nov 13 2010, 06:22 AM']When I pack away my Ashdown Little Giant after a rehearsal/practice , i rekon I could fry an egg on the bottom of it , the top and sides are relatively cool , ive put stick-on feet to lift the chassis for more ventilation but still hot , is this common with the likes of markbass and Genz Benz as well ? , Ive never noticed the fan coming on and I dont drive it hard either .[/quote]