Watts and power

EPDR does not impact Class-D amplifiers. I do not understand why you will not communicate what you used as a current probe to measure 80 amps peaks?

Generally I would expect an amplifier that costs literally 100 times more (per channel) than another amplifier to be "superior".  However, your comment about "seriously current starved" cannot be backed up with facts. It does not go backwards into 2W, it has about 75% more power into 2W than it does into 4W. Do I have any illusions it can do 1500W into 2 ohms, even IEC bursts? Not really. But then again, you don't have proof it doesn't. I do know for a fact it puts out 75% more power into 2 ohms than it does into 4 ohms.


The Gryphon is a claimed 350W into 4 ohms continuous. The Behringer claims 750 (2x, not 17x). It also claims 3000W into 4 ohms. Will it? Doubt it, but maybe for IEC bursts. Will it do >1500W in long enough bursts to support real music at those levels? Yes it will, and yes, that is quite a bit more than the ~100 times more expensive Gryphon.


The primary limitation of it at 2 ohms, is the same as it is at 4 ohms, thermal, not current.

audiozenology"I do know for a fact it puts out 75% more power into 2 ohms than it does into 4 ohms."

That is a very interesting statement, assertion, and claim how do you know this to be true? This is like you're other pronouncements where you state something as 'fact" but offer no proof, documentation, or data except sometimes a link to a "source" that you Googled.

audiozenology"I do know for a fact it puts out 75% more power into 2 ohms than it does into 4 ohms."
clearthink That is a very interesting statement, assertion, and claim how do you know this to be true? This is like you’re other pronouncements where you state something as ’fact" but offer no proof

He has no idea.
If what he said were true everyone that calls themselves an audiophile would be using them, and there would be no need for Krell’s, Gryphon’s Agostino’s, ect that can come close doubling from 4 to 2ohm, we all be using this $349 3000w Behringer he’s touting or similar. Like I said, he has no idea, all he's good for is beating his chest and stalking.

Cheers George

There are two types of people:

1. Those who know how to use Google (and other references), can sift through results using sufficient knowledge to reach accurate conclusions and consult industry friends to cross-reference.
   
2. Those who insult others, but cannot back up their insults.
   

I don't know any audiophile who would make putting 75% more power into 2 ohms than 4 ohms their defining criteria for purchasing an amplifier. Do you?

The idea that doubling power is important springs from the concept that loudspeakers are ’voltage driven’. What this means isn’t that the speaker is driven by voltage (despite the expression), it means that the power that drives the speaker is such that the voltage aspect of the power is constant regardless of the load. (Voltage is an aspect of power just as current is; 1 watt equals 1 volts times 1 amp.)


IOW such an amplifier is termed a ’voltage source’.


The thing is, an amplifier **DOES NOT** have to double power as impedance is halved in order to act as a voltage source!!


Tube amplifiers can behave as voltage sources (after all, the this idea was originated by MacIntosh and ElectroVoice back in the 1950s) and they certainly don’t ’double down’... But they **can** cut their power in half as impedance is *doubled* and that is how they manage being a voltage source. The thing is a solid state amp does that as well. Its only at **Full Power** where 'doubling down' might make a difference and right after that is clipping, so its not that big of a deal since the amp really should not be running anywhere near full power if its a good match with the speaker.


So in a nutshell the ability of an amplifier to double power as impedance is halved is not what makes for a good sounding amp, and it may not be important at all; certainly with most speakers on the market its not. In fact the number of speakers that have horrendous amplifier-torturing load impedances (and phase angles) is actually pretty limited. Its a simple fact that the harder you make an amplifier work, the more distortion it makes so its unlikely that a speaker that is horrible to drive is going to sound like real music regardless of the amplifier employed.


So the whole thing is a bit of red herring.