integrated GC lm3886 with OP2134
this is another GC..
this is another GC..
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A heat sink is only a sink until it reaches the temperature of the heat source. It needs to exchange that heat with cooler air to continue functioning as a heat sink.
You will be better getting rid of those heat sinks and just bolting the chips directly to the chassis walls (assuming the walls are > 4 mm aluminium). This gives a chance for the heat to get out of the box and not cook your capacitor bank.
Even venting the chassis will not help, as the heat sinks are installed horizontally instead of vertically, thereby preventing natural convection.
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Agreed. Bolt to the side or put the sinks on the outside and drill some holes to mount chips on the sink. Even just mounted on the outside with no holes would help more.
speaking of ventillation, is there any at the bottom? top is great, when you add it; but a lot of people don't add any on the bottom. air comes in from the bottom if you allow it..
A couple of holes on the bottom in the back and a couple in the front on the top will give convection through this horizontal sinks and back to front cooling to keep the equipment rack cool.
Did you decap a STK module? Wow, please tell me more about that!
I had some STK modules a while ago, but their distortion figures kind of put me off, then i discovered LM3875/LM3886 chips and havent looked back.
My new amp
Hey, I should have a new one for you shortly. It's my first attempt and includes:
- 2x TDA7294 amplifier module
- headphone amplifier (redcircuits schematic, not installed yet)
- ~200W flyback SMPS with TOP249
It's a work in progress and a little crowded inside, but as far as I can tell, both speaker and headphone amplifiers sound good.
Hey, I should have a new one for you shortly. It's my first attempt and includes:
- 2x TDA7294 amplifier module
- headphone amplifier (redcircuits schematic, not installed yet)
- ~200W flyback SMPS with TOP249
It's a work in progress and a little crowded inside, but as far as I can tell, both speaker and headphone amplifiers sound good.
My new LM3875 chipamp
I finally finished my first amp!
It is based on the LM3875 Amplifier Kit from Audiosector.
I am using a Nuvotem 225VA 18V toroid.
The sound is amazing, and very detailed compared to my old integrated Yamaha amp!
I finally finished my first amp!
It is based on the LM3875 Amplifier Kit from Audiosector.
I am using a Nuvotem 225VA 18V toroid.
The sound is amazing, and very detailed compared to my old integrated Yamaha amp!
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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Very nice and clean design, how does it sound? HAve you thought to add more caps to power supply or that design just fits your needs just the way it is?
(it seems like a dummy question LOL, sorry... )
(it seems like a dummy question LOL, sorry... )
That is a fantastic case, especially that venting! Where did you find it, if you don't mind me asking?