Express. Wong

Yeah let's keep this going. Been tinkering with vintage gears during the pandemic. Ended up with couple Rotel, NAD amps, restored a pair of AR TSW-510 as keepers. Anyway I too have mis-marched mid woofers. I believe the on the one on the right is the original, since the left one is different than other 3.

They are 4 ohm. Yes get them fixed. Even well matched replace will not sound the same. These mids are not mid bass you find on parts express.