I have a set of 70's pioneer PAX-25b speakers. They say 15w "Full Range" why do they state such a low wattage but output big

[timjunglejim]

Seeking Information on speaker wattage

 

[jsmithepa]

They say. Who are "they?"

Higher efficient speakers will soon louder with the same input power, but don't expect a 15w to sound like a 150w.

 

[timjunglejim]

They say. Who are "they?"

Higher efficient speakers will soon louder with the same input power, but don't expect a 15w to sound like a 150w.

The Speakers "say" 15w and they do crank up very well with 100w amp. Just I have never seen any speaker before that says 15w so just wondering why so much good sound with a low wattage speaker...???

 

[americanaudiophile]

Be careful using them. You could blow them if you aren't careful,
When the most powerful amp you could buy was a 40 watt tube amp a 15 watt speaker isn't so low.

 

[USAFRet]

They say. Who are "they?"

Higher efficient speakers will soon louder with the same input power, but don't expect a 15w to sound like a 150w.

The Speakers "say" 15w and they do crank up very well with 100w amp. Just I have never seen any speaker before that says 15w so just wondering why so much good sound with a low wattage speaker...???

Wattage numbers have changed over the years.
When those speakers were made, a good amp may have been listed at 40 watts per channel.

Today, a "100 watt" amp might be 100 watts spread over 5 speakers (channels).
And the way they measure it has also changed.

 

[kanewolf]

Also an image search for the PAX 25B speakers shows that they may have been part of a set with a woofer and a full range speaker. The crossover may have limited the power to the full range speaker.