EV ELX118P power module.

[T_Gowan]

Ran the amp all day Sunday hitting the limiter a lot. Infrared thermometer hit 103F on one spot on the module. Passive cooling but open to the air. So I think it will do the job.

[Seth]

Running both T39's?

[T_Gowan]

Just a single. But..... I was thinking of trying both and see what the results would be. Would over heating be the only indicator of it being too much of a load?

[T_Gowan]

I can get another module and have both T39 on their own amp. The things a just so darn light it amazes me that it packs such a punch.

[T_Gowan]

Or as I should have said too little load 4 vs 8

[T_Gowan]

Reading in an old post that the new digital, ultra light amps don't perform well on generator, for lack of proper term, power as it can't rev up to supply the sudden power demands of these amps. Might this thing suffer from the same issue?

[Seth]

Overheating would be the main indicator of running too little impedance. It may do it without issue.

I've had no problem running my Class D amplifiers from generator power, both traditional generators and the newer inverter generators. Some of the amplifier tests I've seen on-line have indicated some amplifiers take huge gulps of amperage and I think that's where some of the concern has arisen. Trying to get a short plip of 80+ amps out of the power grid isn't an issue, even on a 15A residential circuit and outlet. But, getting that same blip out of a generator that has no chance of ever creating it leaves some curiosity open for me as to how an amplifier would react to that situation. I've never tested it nor have I read of anyone else testing that situation either. Would it just take a longer gulp of whatever amperage was available and not effect the amplifier output, or would it absolutely effect the output? Dunno. But again, I've run my class D amps on generator without issue. I'd disable "eco" mode if you're going to try them on a modern inverter generator... and don't skimp on extension cord quality.

Along the same lines and worthy of mention, tube style and other old tech amplifiers require a pure sine wave power source to function. An old tube amp will not run well, if at all, on a modified sine wave (which could also accurately be called a modified square wave) DC to AC inverter.