The PA-7 was a Threshold/Pass design and licensed Nelson's Stasis technology. Stereo Review magazine measured the output at 253 watts into an 8-ohm load, 400 watts into a 4-ohm load, and 650 watts into two ohms. The amp had decent total capacitance @132,000uF, but was delivering that power from only a 700 VA transformer. Hence it couldn't quite double down at 4 and 2 ohms. Therefore although the amp will drive a demanding load such as Maggies, it would be happier with a moderate to efficient load where it isn't being asked to deliver huge current into low ohm loads. And i'm saying that as a guy who owns an amp with an efficient 1.4kVa tranny and 144,000uF total capacitance. The Nak is a great looking amp with it's black face plate & old school handles. Enjoy!
Nak PA 7 Power Amp
Whats your take on this item. Just reworked one but dont have speakers to
test this monster. Ran it into my 15" Poly 250wrms sub 20 - 50 hz sine wave and she was pushing an inch or more. I use this poly which has monster rubber suspension and 4 layer coil for
warming the big boys up after rework.Any info would be appreciated. Tx.