Impedence question

[the keester]

My Harbeth Compact 7s have a nominal impedance of 6 ohms and a sensitivity rating at 87 db.

I am using the 8ohm speaker outs of my mc225 to drive them. If i tried the 16 ohm (or maybe the 4 ohm) speaker outs of my MC225 what would be the result?

bad sound? ruined speakers? improvement in any way?

thanks

 

[stonedeaf]

won't hurt

The Mac is transformer coupled or isolated (depends on how you want to look at it). You won't hurt anything trying the different taps. Usually most speakers have a impedance dip somewhere in the bass range - I usually run tube amps one tap down from whatever the nominal impedance of the speakers .
In any case - you won't hurt anything trying different impedance settings.

 

[the keester]

what affect should i expect? louder? better sensitivity?

 

[the keester]

tried it.

4 ohm and 16 ohm sounded brighter and in your face. went back to 8 ohm for a warmer more balanced sound.