Old speakers' power rating

[Al ears]

Yes, I'm referring to passive speakers.

As for the examples - speakers' product pages and HiFi enthusiast websites.

PRO-X 6.5" Mid-Range Bullet Loudspeaker 250 Watts Rms 4-Ohm

Shop online DS18 PRO-X6.4BM 6.5" Mid-Range Loudspeaker with Bullet 500 Watts 4-Ohm. Free shipping on all U.S. orders.

ds18.com

What’s the Difference Between RMS and Peak Watts?

Understanding root mean square (RMS) and peak power ratings is essential for building a high-performance entertainment system. Learn what these power-handling terms mean to make...

www.mwrf.com

As such it is the power handling ability of a single transducer.
Given a speaker with multiple drivers quoting a RMS figure for the speaker itself is meaningless so a figure for maximum power recommendation is normally quoted.

 

[arkanoid]

As such it is the power handling ability of a single transducer.
Given a speaker with multiple drivers quoting a RMS figure for the speaker itself is meaningless so a figure for maximum power recommendation is normally quoted.

I'm not saying that the RMS is used correctly or makes sense in the example, but it is used.

I can provide a long list of examples with floor-standing and bookshelf passive speakers' product pages but in Polish. Maybe here it's more common to use RMS this way than in English-speaking countries.

Anyway, this is off-topic at his point.

 

[Gray]

It would say that's rather obvious

With respect, I have to say that your questions and responses make you come across as a unique combination of expert and novice.

People here have tried to give advice.

You're after an amp for your speakers - but have given no real clue as to what your source(s) might be.

As @nopiano has stated, you will not need 50 watts as a minimum - up to you whether you believe him.

Seriously, good luck with finding what you're after - once you know what it is 👍