Can the PE 300-794 plate amp be used with a 2 Ohm load? (1 Viewer)

The 300-794 isn't going to work with a 2-ohm load, there have been documented problems running woofers with a DCR under 3 ohms (i.e. Dayton DVC series) with that amp. A two ohm load will certainly cause the thermal protection circuit to cut in on a regular basis.

If I were you I would run two woofers for now and save up to get another 300-794.

Javier,
I see you live in Mexico City- hotter than Beaumont !! I have 2 of the 300-794 amps running 2 ohms, 1 into each voice coil of an AV-15. Room temmp stays at 68-70F, but I didn't mount the amps to the sub enclosure. I have them mounted in a vertical row, on a standoff fromm the wall. A small fan cools the backside, and another cools the heatsink side. Not the most elegant solution, but it works.
PE expressly warned me against doing this; they've been running strong for about a year and a half, with no problems. On a call to get a friends amp repaired, (ironically, at an 8 ohm load, but sealed in an enclosure) the tech told me its prob pushing close to 380 watts into 2 ohms.
However, he told me also that if I fry the amp, it may fry beyond repair, and thus be a total loss.

standard disclaimer applies

HTH

Just re-read Jasons post-
*If I were you I would run two woofers for now and save up to get another 300-794.*
excellent advice

If you've already got this plate amp then why not try hooking it up as an 8ohm load just to see what kind of output you get. With a 4 driver IB your efficiency is going to be pretty good. Maybe you don't need more than 180 watts.

There's a couple of reasons that I would not recommend shorting half the coils and running a 4 ohm load. First, if the amp was a perfect voltage amplifier then you would only come out even - 3dB gain from increasing the supplied current and 3dB loss from driving only half of the coils. So you'd be putting extra strain on the amp and the woofer coils for nothing.

Second, this amp is not a perfect voltage amplifier. You'll actually get slightly more output running all coils at 8 ohms than running half the coils at 4 ohms. This is because the amp can output 180 watts @ 8 ohms instead of half of the 4 ohm rating (272/2 = 136 watts).

I've got a 300-796 (european from conrad, look for 301044) running 4 8" infinity (kappa400) woofers. It's not running for that long (about a week) already but it's doing fine. It gets hot but not alarming. You've got 4 big woofers. I can imagine the amp getting difficulty at high output...