What Class D amps will drive a 2 ohm load

When you can't get a conversation past the difference between current limiting and power limiting, stability seems to be the least of our concerns.

they’re stable down to 1 ohm

As I said above, so is an 80’s NAD3020, stability is needed, but that is not the criteria for it to sound good at those types of speakers low impedance’s.It needs to be able to almost double it’s "full" rms wattage for each halving of impedance, from 8 to 4 and from 4 to 2ohms, and I asked Merrill twice, to supply that, and twice the question wasn’t answered.

just call Merrill and ask him if they’ll drive the Kappa 9s.

Ask him more so will they drive the Kappa’s to their very best, seeing they are very expensive amps. See if he’s a saint or a car-salesman.

Cheers George

'Stability' is that which prevents the amp from oscillating. Just so you know. So in the phrase:

As I said above, so is an 80’s NAD3020, stability is needed,

- the term is being misused. In fact its unclear what is meant here. Are you saying that the NAD goes into oscillation when presented with a 1 or 2 ohm load??

You are applying criteria that could be used as a measure of a Linear amplifier to a Class-D amplifier which can current limit cycle by cycle, hence the current limit and power limit of a Class-D amplifier can be decoupled rendering your statement irrelevant depending on the Class-D implementation.

It needs to be able to almost double it’s "full" rms wattage for each halving of impedance, from 8 to 4 and from 4 to 2ohms, and I asked Merrill twice, to supply that, and twice the question wasn’t answered.

OK, so what is the definition of instability for these Class-D amplifiers? Since they have over current protection mode, and soft clipping capabilities the amp continues to operate, but not optimally. Without the use of an LED display to the circuit board (1200AS2 has this option), how would you even know it’s happening - is bad sound is the only way? Again, since the amp is running and making music, would this indicate it’s stable?