Amp output

[bdeyes 0]

when a amp puts out say 500W per side @ 4 ohms, and you daisy chain 2 8 ohm speakers to get the resistance down to 4 ohms.

Does each speaker receive 500W or do they get 250W each?

 

 

[spinner 0]

The load is shared between them.

[High Fidelity 0]

Yep!

 

They get 250W each.

 

A point worth remembering too, is that 2 x 8ohm 12" speakers will often sound louder than one 15" 4ohm speaker because they're moving more air.

[ChrisPointon 0]

Remember that your choice of speaker will also determine how much volume you get for your watts http://www.dj-forum.co.uk/html//emoticons/smile.gif . When choosing speakers, it is important to get the highest SPL rating that you can afford, these are often displayed as db/m or db figures in the specification.

 

This figure basically shows how efficient the speaker is at turning voltage into volume.

 

So in principle, a speaker with a 101db/m rating will sound louder from a 250W Amplifier, than a speaker with a 93db/m rating run from the same amplifier!. http://www.dj-forum.co.uk/html//emoticons/smile.gif

[superstardeejay 0]

Yep I'll second (or third!) those comments.

 

 

[norty303 0]

QUOTE

So in principle, a speaker with a 101db/m rating will sound louder from a 250W Amplifier, than a speaker with a 93db/m rating run from the same amplifier!.

 

Or in another way, the lower sensitivity driver will 117db with 250w input. The higher sensitivity driver will do it with only ~45w input power and go on to a peak of 125db with 250w!!

[bdeyes 0]

cheers guys,

Much appreciated.

 

Dave