MC2 E45 amp ability to power 2 ohm circuit

When you look at the full spec sheet you can see that this amp should be able to deal with 2 ohm load as the power output per channel has only reduced to 4100W even with a crest factor of only 2.8.

The choice of whether to run at 2ohms then comes down to how important maximizing the service life of the amp is for you compared to getting the most possible output power out of the amp.  The amplifier is rated for it but your still doubling the current in the output transistors and running parts hotter.  You could always run 6*8ohm drivers off each amp for 2.67 ohm per channel as a compromise.

To bother with 4ohm drivers to me is more about the driver than the amp, if its a super high performance 21" driver with a 6" coil you might want to consider 4ohm just to get the most out of the driver but if its just an average 18" 4" coil driver then the driver will already be thermally compressing and there will not be much gain by the potential doubled power on the voice coil (apart from a cooked driver).

Why anyone is interested in balls out performance into 2R both channels sub is beyond me. Power is cheap these days, go with something with plenty of voltage and keep to 8R. 

Returning to this page, as E45s are regularly popping up at reasonable price.

But the question still remains, can the MC2 E45, out perform the Void Infinite 8MK2, on sub notes !?

And for all the 2 ohm haters out there, let us not forget.

A typical Horn loaded 18" Sub enclosure, with nominal 8 ohm driver, in reality, will measure approx 10-12 ohms.

Same with 4 ohm driver, will measure as approx 5-6x ohms.

So 4x cabs loaded with "8 ohm" drivers per side of an amp, will not be 2 ohms,

Neither will will 2x cabs loaded with " 4 ohm drivers", per side of an amp.

Now that is out of the way, an Infinite 8MK2, can power 2x "4 ohm" 18NLW9601 drivers per channel effortlessly, from 38hz to 100hz.

Question is, can the MC2 E45 do the same, given the higher power rating !?

If your chosen music has no such dynamics then carry on. For everyone else, having modern amps with their very much greater, if brief, output voltage capabilities is a major boon to sound quality.

Take it from someone who was operating sound systems when your peavey amps were state of the art, Sound systems have come on a long way in that time!

And, no, 30 odd year old amplifiers of any type will not be as reliable into a 2 ohm load as a similar, new amplifier of similar quality. 

Neither would a QSC PL9, even with all its power and sub warmth, but hoping it will survive each gig.

On FB, many have said E45 is very disappointing on sub, definitely wont meet rated power below 60hz, so that is that.