Forum upgrade to SMF 2.1.2, still working on re-theming.
Started by joecool85, April 05, 2006, 07:37:26 PM
Quote from: ApexJr. on January 16, 2007, 03:05:16 PMIf your intereted in HEATSINKS I have some in stock..www.apexjr.com/Sinks.htmSteve @ Apex Jr.
Quote from: mad hatter on April 29, 2008, 03:11:46 AMI use an Ampeg SS-150 guitar head. It has a pretty big heatsink on the back and a thermal overload cut off sensor on the inside part of the heatsink by the poweramp transistors.I put a liquid crystal thermometer on the back and the hottest the heatsink's gotten is around 100-110 degrees F - about 30-40 degrees higher than the ambient temp. I decided to buy a DC brushless fan from radioshack. I attached it to a plastic clamp (plastic - so it doesn't mess up the tolex), clamped it on the amp, and aimed it at the heatsink/transformer.It keeps my amp much cooler, only about 10-15 degrees higher than the ambient temp.The fan does not add any hum or noise whatsoever to my signal. You can hear the airflow slighlty if you are not playing anything, but you can't hear it whan you play and a SM57 doesn't pick it up when I mic my cab.
Quote from: mad hatter on May 02, 2008, 10:31:43 PMI just thought of this. I don't have alot of technical knowledge, so please forgive my ignorance. It seem to me that the heatsink transfers heat from a surplus of heat to an area of lower heat. So does this mean if you were playing in a room that was 300 degrees F, the heatsink would have the opposite effect and take the heat from the air and then heat up the defecit of heat (the componets inside) until the amp reached equilibrium with the room?
Quote from: ponchojuan on September 16, 2009, 12:35:36 PMThe first one could be interesting if you chimney-effect the enclosure and heatsink. The current holes are way to skimpy.