[EPI M250 and EPI M180 Speakers and their ohm rating???]

The only 8" EPI woofers that were 4 ohms were on the 601 and 602.  ALL others are 8 ohms.

 

The M180 spec of 8 ohms is incorrect.  

[Epi M50]

The 50's are awesome little speakers, especially in a smaller room. I first heard them in the early to mid 70's. I walked into a stereo store and was quite impressed by the speakers that were playing. I looked around to try and figure out which of the big speakers were playing, and was very surprised to find that it was the tiny M-50's. That is what hooked me on EPIs. I walked out of the store with a demo pair of M-100's (which I still have).

I presently use a pair of M'50's in my master bathroom, driven by a vintage Pioneer car stereo that I mounted in a wood box.

I also mounted 2 pairs of M'50's in the ceiling of my basement to provide surround sound for the TV.