[J57ltr]

Edit:I am sure it wasn't (or is ever) cool around here so it was probably fairly low.

Come to think of it, the truck had 2 45's bridged each on its own 15", so I guess that would have been closer to 20V RMS. I had each lead in a hand and we were trying to tell if they were out of phase on the first startup, so I had it up pretty loud. I used to work on those series of amps (among others) extensively. That was back from the transition from transistor based switching power supply to MOSFET based power supply.

Jeff