KLH Model 5 question

millercarbon

Speakers don’t require power. You do. The louder you want, the more power you need. So the question is, how much power do YOU require?

That’s not a very helpful response because, of course, speakers do require power. They won’t make sound without it. And different speakers can have completely different power requirements, from a little flea-powered tube amp to kilowatt ss amplifiers.

I wish I has some familiarity with the KLH 5 so that I could offer some useful information.

Twenty five watts is a good recommendation! My KLH 6's work well with my Dynaco ST70 tube amp (35 wpc).

Being an acoustic suspension type like the Kloss designed Advent, I would say they would need a good amount of power to come alive. Here is some info on them and it says a minimum of 25 watts. 

https://stereonomono.blogspot.com/2016/06/klh-model-five.html

Those vintage AR and KLH acoustic suspension speakers were built back in the day when 25 watt (PP 6L6G's) tube amps were common. These sealed-box speakers sacrificed sensitivity for lower bass extension. Which they do quite well! 

I have AR 2ax's, AR 4's and KLH 6's. Plus the outstanding KLH Nine electrostats. They are all capable of excellent well-balanced sound!