impedance/wattage mismatching.

[hak4fun]

I have a set of 40watt 80hm impedance speakers. And want to use them with my pioneer SX434 receiver that has a built in 15watt amp. Will it be an issue? I am guessing not but I have already blown something up today and rather not do it again.

[Guest]

Is that 15W RMS or peak?

[Enderman]

amp = higher power than speaker ---> you may blow the speakers

amp = lower power than speaker ---> volume may be too low, but nothing will be ruined

 

Also make sure you're reading RMS power

ignore anything that says peak

[hak4fun]

Is that 15W RMS or peak?

I do not know... this says 15watts per channel

http://www.hifiengine.com/manual_library/pioneer/sx-434.shtml

[johnt]

Wow this amp is old enough to have legitimate ratings. That 15w is likely peak, but it's per channel. It's critical you find out how, and set the amp to 8 Ohms to match your speaker's impedance. Otherwise you don't have much to worry about. It should get loud for comfortable listening. I just wouldn't except this amp to provide enough juice for a party.

[hak4fun]

Wow this amp is old enough to have legitimate ratings. That 15w is likely peak, but it's per channel. It's critical you find out how, and set the amp to 8 Ohms to match your speaker's impedance. Otherwise you don't have much to worry about. It should get loud for comfortable listening. I just wouldn't except this amp to provide enough juice for a party.

yea, I just want it for my bedroom. don't need any floor shaking just decent sound.