Hi Aadams,
Yes. That is a Hi-Vi Q1R. Fitted with the appropriate addons to achieve close to AR sound. Yep, i cut the screens from the mids.
Unfortunately someone dropped a unit while i was working on them, leaving a big old dent in the screen (and the dome underneath it) Needed to remove the screen and use a vacuumcleaner and the tape method to resurrect the now inverted dome. I managed to pull it off without severe damage, but i saw no way to place the screen back. And to make them look identical i removed the screen from the other mid aswell.
Pots were not salvageable, 40 years of thick corrosion did its thing. Even an overnight bath in distilled white vinegar wasnt up to the task.
So i looked around for a good L-pad replacement. A friend of mine suggested that you don't want L-pads in the signal, so i went with the direct resistor route. After multiple hours of testing and listening i came to the right values, put them in and never looked back. They sound amazing right now. Okay, attenuation is a bit trickier right now. But these speakers are now tuned how i like them, and they aint leaving anytime soon.