Mains power voltage drop to reduce usage?

I once bought some 120W computer speakers which had marked on the back "power consumption 2W". So er.... breaking the laws of physics then. For audio equipment I always ignore the output and look at the power input rating, those tend to be correct.

That's some "new" standard they invented a decade or two ago. I never figured it out, but I guess it means the effective power radiated to the front. Like, what would be the spherical power that would have the same effect over a person placed just in front of the speaker, which would be highly directional.

Musical watts, I think they called them.

Not related at all to what we were talking about.

No, I have known RMS power since ever and it is not that.

Maybe:

About 40 years ago, shops advised 1W RMS = 2W MPO = 4W PMPO. Then PMPO started getting more hazy and is utterly meaningless. I ignore it and look at the power rating plate on the input - a far better idea of how loud it is.

... and, of course, how load it is depends not only on the amplifier power but also on the sensitivity of the loudspeakers. My (old but wonderful) Tannoy Berkeleys are very sensitive and at anywhere near their maximum handling capacity of 85 watts are absolutely deafening.

loud! (I fixed most of them but missed that one)

My friend is obsessed with sound quality. He took his favourite music into a store and played it to choose a stereo to buy. The one he was recommended by the salesman he immediately dismissed as it sounded distorted when he played heavy metal at full volume.

One thing I disagreed with him on was if it should sound good when turned up to max. He insisted if it overloaded the amp or speakers, the volume control shouldn't go that high. I suppose it makes it more convenient if you don't have to decide where to stop, but it also means you can't turn it higher if you're trying to listen to something really quiet.

Yes loud! What? LOUD!!! It's too loud to hear you!

We had a couple of home made cabinetted Tannoy 15 inch monitor gold's many years ago for a rather upmarket sounding disco and very good that was too!

Driven by a water cooled QUAD 303 power amp:)

Well IIRC it was the hot summer of 1976 and it the amp did get u hotter then to ought to have done so it was often placed with its fins in a bowl full of cold tap water! it worked very well the amp, made in 1967 is still here in daily use!..

Yes it ought to have been air cooled but it was very hot and sweaty in most locations so the water cooling was used!

How did that not short it out?

P.S. WTF? "it the amp did get u hotter then to ought to have done"

Ive had similar transistors; heat sinks over 100°C...

Try Botswana discos Tony. Now THAT is hot and sweaty!

What body parts did you notice were sweaty?

The fins on a 303 are round 40 mm long and they were the only bits under water..

Too hot to touch, it was a domestic hi-fi amp not really for high power use tho they did around 50 watts raise the HT reg. rail a little..

The old Tannoy's are very efficient speakers!

In article snipped-for-privacy@ryzen.home, Commander Kinsey snipped-for-privacy@nospam.com scribeth thus

I had to go into a night club in town back in the summer most all girls in there were bikini clad!..

Mmmm.....

When people strip that far they might aswell go further. I was disappointed to find out "naked" snowboarding days often means bikinis. I think it's an American thing - they think you're naked if you're in swimwear or underwear. What normal people call naked, Americans call "completely naked".

To keep it seasonal:

"The main reason Santa is so jolly is that he knows where all the bad girls live."

G. Carlin