Amplifier/Reciever and Speaker Pairing

[val77459]

Hi,

I have a receiver that says it's good for 2000W, and the user manual says Output is 240W @ 8 Ohm. I also had 2 Polk Speakers that handle 80W. I tried to keep the volume down so I didn't over power them, but at a party, someone turned them up and ruined them. I want to replace them, but don't want this to happen again. Is there some device that I can use to limit the power going to the speakers? Or do I need to add more speakers to distribute the power better? Any help would be appreciated. THANKS!!!
Pyle Receiver
Polk Speakers

 

[Audioguru]

The maximum amplifier power is much too high for the little speakers. Use an amplifier with lower power or use speakers that survive 240W. I had speakers about the size of yours rated on the label for 40W but they got damaged. Inside, the speaker was stamped 5W.

 

[barry]

Fuse

 

[Audioguru]

Some people use an incandescent light bulb in series with each speaker to limit the power to the speaker because the resistance of a light bulb increases (maybe 10 times) when it lights brightly.

The 80W into 8 ohms speaker max continuous voltage is 25.3V at 80W/25.3V= 3.16A.
The 240W into 8 ohms amplifier produces 43.8V.
The difference in voltage is 18.5V at 8.6A which is a 18.5V x 3.16A= 58.5W light bulb.