Hypex NC252MP cooling

[MrOtto]

I'm building a Hypex NC252MP amplifier in a Ghent case and I am considering improving the cooling.

Could I mount heat sinks on the sides internally to increase the surface area?

Could I mount the amp board towards an upside down large heat sink with short fins, but could a problem with grounding and heat transmission to the rest of the chassis?

Could I mount the amp board on a larger aluminium plate to disperse the heat better to the chassis?

Is there a solution for a fan kit, mains powered from the mains input, or do the amp board have 12v power output for a fan? Is there a kit with a set or programmable thermostat?

 

[jae]

What about some cheap TIM under the board?

 

[MrOtto]

A short finned heat ink could maybe be fitted on the outside of the bottom plate, which the amp board is mounted directly on, with thermal paste, It seems like the feet on the case are tall enough for a short finned heat sink.

 

[beren777]

Before spending time improving it, you may want to spend time measuring whether it's an issue for your use case. You can always improve cooling later.

 

[boXem]

 

[Matias]

Before spending time improving it, you may want to spend time measuring whether it's an issue for your use case. You can always improve cooling later.

I agree. I suggest to built it, run it for days and weeks, and only if it is reeeeally needed, then start improving cooling.

 

[TheBatsEar]

Is this baking paper?

 

[boXem]

Is this baking paper?

Nope. Sand paper.

 

[TheBatsEar]

I'm not afraid to admit that i don't get it.

 

[pma]

To remove anodizing.

 

[JayGilb]

Looking at the module header pinouts, it has temperature sense outputs available for both L+R channels, so you should be able to read the max temp under load and get a good idea if will even need to cool it.

 

[MaxBuck]

I'm not sure why anyone would be interested in improving cooling for an amplifier that runs very cool already.

 

[TheBatsEar]

I'm not sure why anyone would be interested in improving cooling for an amplifier that runs very cool already.

With improved cooling you could up the voltage, thus upping wattage, while keeping distortion at bay, could you not?

 

[MaxBuck]

With improved cooling you could up the voltage while keeping distortion at bay, could you not?

Why do you say that?

This is a very clean and powerful amplifier already.

 

[TheBatsEar]

Why do you say that?

This is a very clean and powerful amplifier already.

Added ", thus upping wattage,". Am i wrong that you could harvest more clean watts with higher voltage and cooling?

 

[TurtlePaul]

The amps may run out of current drive capacity or hit their max voltage before cooling becomes a big problem. Not every amp is cooling or rail voltage limited.

 

[boXem]

With improved cooling you could up the voltage, thus upping wattage, while keeping distortion at bay, could you not?

How would you do this?

 

[abdo123]

I don't think anything other than heatsinking will provide any meaningful improvement. And that's not something you can DIY.

 

[MCH]

Is there a kit with a set or programmable thermostat?

Do what people above tell you, they know what they are talking about. If in any case you want to opt for the fan solution, search "PWM fan". There are cheap kits that come with Temperature probe.

 

[Savi]

I don't think anything other than heatsinking will provide any meaningful improvement. And that's not something you can DIY.

I have two nc252mp waiting (I will not have time to build the amp before arpil/may)
I am not convinced that it will be efficient but it will not be difficult to add a heatsink behind the module alu plate with a thin layer of thermal paste and to fix it to the case (I will use a modu case, already use them and like them). For instance 50 euros on Aliexpress. Probably a waste of time and money but I got the modules for 250euros each so why not. Alu heatsink are cheaper.