Class D kits for bass guitar amp??

[AP2]

ok, there is no psu switch for esoteric use of amplifier, then we must convince ourselves that the amplifier can corregir the PSU.
now there a PSU for esoteric use.
stabilized with 150ns response time, free IMD Vs. amplifier,no ripple (zero) at 600w (4R).
excellent power factory.
ultra compact,no big capacitors use.
2 years of development, custom trafo, development a complex asic for running this new architecture "RIPS".
not competitive? ...I think that is unique in the world at the moment

[AP2]

Hi,
I think this pic is clearer, has more info for this new amplifier.

Regards

[Jan-Peter]

Originally Posted by AP2

Hi,
I think this pic is clearer, has more info for this new amplifier.

Regards

Hi AP2,

You are very much enthusiastic about this product, are you the developer or do you have any other (commercial?) direct relation with the manufacture?

[AP2]

Hi Jean-Peter,
is normal that are taken from a lot of enthusiasm.
developing new real amplifier (research to eliminate certain defects of all Class D amplifier)
no classic schematics and not typical chip Class D use.
this amplifier is not recognized as a big mospower class AB in an anechoic chamber by audiophiles (cd player direct connected). this is the greatest satisfaction for the immense work that was done by the team.
PSU.
research for this new architecture (2 years) solves some problems on Avionics parts.
this alone could justify the investment.
I am an engineer (physical electronics) and am part of the MDI team.
when the commercial side is much contention as you can well imagine.
But .. why do you ask? You are Hypex man, the market is free, everyone has their own products.

You would have the same enthusiasm?
Regards

[phase_accurate]

If the module shown (with PSU included) is the one that will be available around 300 Euros then the price IS competitive - OK.

Regarding PSU ripple compensation: Good ripple compensation is intrinsic to self oscillating class-d amps.
With carrier-based amps one soution is to amplitude-modulate the triangular carrier as a function of PSU voltage. Don't know how old this idea already is at the moment - but the first patent may be even old enogh to have ceased already. Would have to take another look at that because it many years that I had a look at that. The TI chip mentioned by 81bas is a fine example for a modern integrated carrier-based amp.

The same questions as Jan-Peter asked came up in my mind as well.

Regards

Charles

[phase_accurate]

deleted double posting - maybe a mod can remove the remainder as well !

[AP2]

Phase_Acurate:
If the module shown (with PSU included) is the one that will be available around 300 Euros then the price IS competitive - OK.
---------------------------------------------------
if I have to be realistic, this is competitive even if cost 500 €.
a pair of these in a case (wood and aluminum) 1U or 2U, finally the audiophile is happy without spending € 6000
Regards

[81bas]

Originally Posted by AP2

no classic schematics and not typical chip Class D use.

I like to see the optocouplers in this amp instead of some usual low/hi side integrated mosfet driver. No lockup problems, less requirements to the dv/dt characteristic, etc.

[AP2]

Hi,
for this performances ... were necessary 100ns, from modulator (outstage) to mosft gate,with custom dt.
somehow this has been achieved.

Regards

[savu]

Originally Posted by AP2

Hi,
I think this pic is clearer, has more info for this new amplifier.

Regards

hello one question:

what does "rips uses 3 high speed mosfet to rotate pulses in trafo" ?

regards