Discussion of Class D Amps Application & Experiences

The latest and greatest new kid on the block is this.
https://www.lkvresearch.com/lkv-veros-power-plus.html

Two, very interesting but lots of competition for Class D at $10k

+1 erik

Gfi

if you wanted to make a pertinent point, you should have provided dates of these comments

I love my EVS 1200 even more that I now have the EP 3.4s.


I can’t imagine Rics new venture could possibly be better, well, perhaps in smaller rooms it might

The EP3.4 speakers are rated at 96.5db.....so let’s say that at your listening position it is 87.5db.....then 100 watts will give you 107.5db peaks. Do you listen louder than that?!? I hope not! So, do you really need 600 watts? Maybe you just need a big power supply so your 100 watts you are maybe listening to are up to par (bigger power supplies will usually sound better). This is what a 1200 watt amp module will provide. I am making a mono version of my modded Purifi amps that use a 3000 watt power supply for each channel.....way bigger than what is in the ICEpower IceEdge module. I can also mod the Ncore NC1200 modules the same way (using the 3000 watt supplies)....they are 400 watts into 8 and 1200 into 2 (for those that have current hungry speakers). The NC1200 and the IceEdge 1200AS have the same current rating (38 amps). However, I doubt you need that much power.....you just need control...which is what a big power supply will give you.

The IceEdge module is completely different from the Purifi/NC1200 modules. There might be lots of things that can make the Purifi/NC1200 sonically better.....However, 3 things really stick out as advantages:

1. The input stage on the IceEdge is a built in integrated circuit. On the P/NC modules you can use any discrete input stage you want and run it off your own discrete super duper regulators.

2. The power supplies on the IceEdge are completely built in....so you cannot make them bigger or tweak them very well. The P/NC modules let you put giant 3000 watt supplies, etc. on them.

3. Now this is serious!!!!: You cannot change the ferrite output coil on the IceEdge module to an air core coil (I know, I fried one module trying). However, the P/NC modules can take an air core coil. You would never use an ferrite core coil in a speaker crossover in the mids and highs.....because it is known they wreck the sound). So, why have all the class D amps (until now) used a ferrite inductor? Well, there are some practical reasons, but no sonic reasons. I want sonics...and so do you. A great sounding (they all sound different....must tweak!) air core coil reveals way more information....the sound is way more holographic, pure and fast. The sound of an amp is only as good as its weakest part. The output filter coil on a class D amp is the last part on the output before the signal goes out. Do you want your amp filtered with a ferrite core coil? If you do then buy all the other class D amps. Mine are not filtered (well, not as much.....there is no perfect coil).

Every moment is new and miraculous. There is no final amp....or whatever. Whatever someone did yesterday....will be be surpassed in some today. We don’t need much imagination to realize that.....it is fact.

An air coil will have more resistance than ferrite unless it's huge. 3000 watt power supply is crazy,  600 watts is plenty for a purifi module, use a 1200 watt on dual.