I don't think 4 ohm speakers are BAD. There are some great 4 - 6 ohm speakers. It depends on the drivers. I use planars. Because of the light load @ 4 - 6 ohms they sound quite good. ADD BASS duty to the mix it's a whole different story.. I wire at 8-12 ohms for mids and sometimes 12-16+ for highs.
If I'm using a valve amp, I only tap 4 ohms if there is NO bass duty.
If there is bass in the mix, 8 ohms or better for the tap..
High E speakers are fine NOW it wasn't always that way. Gear use to be a LOT noisier. 95% speakers were a no no.. Floor noise was HIGH on a lot of gear 30 years ago.
Quiet as a mouse with 93/91% I use now... and valves to boot..
Regards
If I'm using a valve amp, I only tap 4 ohms if there is NO bass duty.
If there is bass in the mix, 8 ohms or better for the tap..
High E speakers are fine NOW it wasn't always that way. Gear use to be a LOT noisier. 95% speakers were a no no.. Floor noise was HIGH on a lot of gear 30 years ago.
Quiet as a mouse with 93/91% I use now... and valves to boot..
Regards