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Purifi vs Hypex vs ICEPower

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freemansteve

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Yes, I was not clear - actual power dissipated would be "minus"!
But "efficiency" is a ratio and I somehow confabulated that in what I was trying to say. :)
 

boXem

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I would think that 'running cool' is a function of energy dissipated in the box - its temperature will relate to power-in divided by power-out (efficiency). But yes, some designs do use a lot of energy when not doing a lot, let alone at max vol....

I would think any Class-D is going to be pretty efficient compared with other common designs.
The idea of "running cool" is mainly related to the dissipated power at idle. Because playing music means being close to idle most of the time, with random power bursts.
If one takes two class D designs each outputting 500W, A with 2.5W idling losses, B with 7W idling losses, their efficiency at full power will be almost the same (less than 1% difference), but when installed in the same environment, B will run several degrees hotter than A.
As an illustration, our case comfortably accommodate two 1ET400A while it's outside temperature becomes a bit too hot with two NC500.
 

Holmz

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Yes, I was not clear - actual power dissipated would be "minus"!
But "efficiency" is a ratio and I somehow confabulated that in what I was trying to say. :)

I knew what you meant.
If you correct the post I can delete my pedantic one?
 

marble

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Hi,
I recently acquired an used dual ICEPower 200ASC. It was on the cheap side... And then I saw the Audiophonics MPA-S250NC XLR with Hypex Ncore NC252MP.
Not sure if it is insane or not to pull the trigger, again.
BTW, price is about the same for both.
And I always wanted SOTA for my amps...
 
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Sam Ash

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I am thinking of building a 7 channel amp and a 4 channel amp using class-D modules which I think will be fun to do. Has anyone done something similar? Where can one source power-amp cases that are prefabricated for such DIY projects, I want a simple case that looks nice and is reasonably priced, a provision for rack mount brackets would be nice too. Also, where can one get all the interconnects and interfaces such as XLR and speaker binding posts. The spring type posts could be an option as long as the grip is strong for heavy gauge wires. Alternatively, I could use Speakon. There is also the AC power interface as well as status light. Features such as auto signal detect or a 12-Volt trigger would be required but I think that is associated with the module one decides to use. Last but not least, instructional material or references as well as useful tips would really help.

Are fans necessary for multi-channel builds or are the heat-sinks built onto the modules sufficient?

My main question is more related to the cases, wiring kits and interfaces but please feel free to provide additional input.
 

aaddas

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How about listening test, which one is more exciting?
 

Sokel

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How about listening test, which one is more exciting?
The one with great music,drinks and close friends having fun :)

Joke aside,I have "heard" all 3 brands and there's nothing missing or sticking out.
Choose according everything else that matters (for example if you run 110db horns choose the one with better noise measurements,or if you run speakers with big insensitive woofers in big room choose more power,or if are a barbarian like me choose durability and long warranty),you won't hear anything different in terms of sound quality.
 
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mike70

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The one with great music,drinks and close friends having fun :)

Joke aside,I have "heard" all 3 brands and there's nothing missing or sticking out.
Choose according everything else that matters (for example if you run 110db horns choose the one with better noise measurements,or if you run speakers with big insensitive woofers in big room choose more power,or if are a barbarian like me choose durability and long warranty),you won't hear anything different in terms of sound quality.

people insist to found the "magic quadrant" in electronics, but the awful truth is that in "normal" conditions every decent amplifier will sound the same.
do a controlled blind listening and you will find out ... invest in good recordings and good speakers / room correction aspects, that's where your money must go.

everything else is jewelry, illusion, marketing ... or i accept quality in components, warranty, etc ... but ... effective sound improvement over a decent amplifier? i pay to "see" it.
 
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