[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index] Re: cooling an amp (min. Audi content)
You wrote: > I've got an amp mounted upside down in my trunk of my 90. I never > really had a problem with it shutting down due to heat until I hooked > up all 4 channels and now it is 100+ F in Texas. Bad idea. I've seen a number of amplifiers with blown output transistors/IC's due to this very reason. Mount it at least sideways in order to enable partial cooling by convection. > I am gonna get a fan for it, question is; would it be better to blow > air across it, or suck air away from it, like a radiator fan does? No difference. The cooling effect of the fan is in it's ability to displace heated air in the immediate bordering layer with the cool air from the outside. Since voids are not possible, X cm^3 of hot air will be displaced by exactly X cm^3 of cool air regardless of whether it gets blown or sucked. No frivolous hints were intended. :-) The radiator fan sucks air only if it is situated behind the grille. It blows air if it is in front of it. On some (rally) cars there are both, in the so-called "push-pull" arrangement. ************************************************************ Igor Kessel '89 200TQ -- 18psi (TAP) '98 A4TQ -- nothing to declare Philadelphia, PA USA http://www.geocities.com/MotorCity/Garage/8949/homepage.html ************************************************************
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