I have some of those! I tried them but found that they weren’t good enough. You need thicker metal so the heat can disperse into the fins better. The black anodized ones also work better than the silver ones. They may work ok with a fan, but I didn’t want to have fans for mine, so I just bought (much) bigger heatsinks. They were something like 3 times the price of those ones and are way heavier.
Better too big than too small.
Better too big than too small.
My question is this how big of a heatsink will I need if I’m trying to dissipate 50 watts or even 100 watts I think I’ll try to source a Heatsink from an old recover to make it cost effective
D
Deleted member 550749
Adding a 120mm fan much better option and much cheaper and cooling performance wil b far better, 👍
I’m not sure what you mean you want me to test the dc supply current coming into the amplifier?
At idle the amplifier is very cool to the touch but as soon as you want to draw 1w from it it starts to burn up
D
Deleted member 550749
Yes I'm talking about when amp is used condition or during large proportion current draw transistor heats alot to cure that use bigger heatsink or fan, a well calculated Sziklai config can give better result at heat and gain performance, design matters , but for now use a big heatsink or fan 👍
D
Deleted member 550749
Still u need a fan of already installed in ur cabinet then ok if not then must instal a fan inside cabinet otherwise there wil b lava inside the cabinet 🤣
D
Deleted member 550749
Bro I m not jocking there is no ventilation, after covering the internal atmosphere wil b too hot , heat dissipation at AIR is very important,Alright I just did a test with a 8ohm resistor running at 3.4volts ac which is 1.45 watts and the amp gets very hot I can only hold my hand on there for about 6 sec before it starts to hurt but the resistor without a heatsink was warm to the touch !
I will be drilling holes the the cabinet i already have holes on the lid !
Alright so I just measured the doc voltage across the 0.1 ohm 5w resistor and one measured at 1.9 mv and the other measured at 1.2mv is that a big difference? And how can o get them to be more balanced ?
- Home
- Amplifiers
- Solid State
- MX50SE problem please help