Never seen those before. How do they sound?
Much smoother than the Polk 5's.
They were made in Ft Collins, CO years ago. I went to their place when I lived there in the mid 80's. Steve Harms was the owner IIRC. My dad had a huge pair custom made when they bought a big house in Big Ben outside of Ft Collins.
I think model 4 is huge.
The bottom woofers are passive so these are two ways.
Mid woofer: This is the 1st time I've seen
inductor coils directly connected to mid woofers. The red wire is inductor coil.
Crossover:
Very interesting as I see two very big inductors compared to speaker size and just one small 8uf capacitor under the glue

Also no batting, no sponge nothing inside...
These sound very good and the reason to refoam passives so soon.
I also bought two 8uf poly caps that I need to put in plus some polyfill.
Much smoother, cleaner and easy on ears than the Polk Monitor 5A's.
These both use same tweeter so it must be the mid that's little too forward/peaky on the Polks.
Mids on the Harms rollover naturally as there is no capacitor for the mid and sounds very nice.
However, I blew a fuse pretty quick.
I didn't realize my usb mixer had the microphone connected at high level and it just squeaked and one fuse blew.
There is no value on the fuse so I guess it's 1 amp.