I like to wander through the thrift store looking for interesting things and today I was looking at the speakers and practically stumbled over a little Monitor 5jr Series 2.
I gently laid it down and began examining it - it was a bit scuffed, missing the grill, and the passive radiator even moved when the driver was gently pressed and the tweeter looked pretty good. I took a closer look and realized that the center of the PR was torn loose. I looked around for it's mate and didn't see it, thought about what it would take to repair and set it aside to wander around the store a little more.
I circled back to the electronics area again and standing in the middle of a nearby aisle was another M5jr - this one with the grill. I went through the second unit and found the grill frame was a bit cracked but the PR was intact and the unit was in otherwise OK condition.
The sticker read $7.99, just like it's mate that I'd so recently abandoned. I put it under my arm and went over to where I'd left the other M5jr to find a man examining it very closely, administering a compression test. "Too bad that one's ruined," I said to him. He looked up and said "yeah" with a sad face. "This one seems fine though" he looked at the one under my arm, shrugged and wandered off. I grabbed the damaged unit which now seemed a lot more worthwhile for spare parts.
I bought them both, took them home and benched them. The intact unit sounded fine, even at moderate volume. The damaged unit definitely has some issues: I listened to it at low volume and the tweeter seemed to switch from "normal" to "muddy" randomly. Besides the ripped PR, the crossover seems to have some loose components so I'll have to decide what to salvage.
The tweeter reads SL2500 from '91, the woofer is a MW6502, the crossover has a 1ohm resistor and a 13.5uF cap.
The working unit looks like it could be a very decent matching center channel for my M5B mains.