[DaveX]

Lets say the D200's 200 watts @ 8ohms requires an 8ohm loudspeaker of 89db sensitivity 1W @ 1m to achieve an 105db peak. What would the db's sensitivity of a 4ohm loudspeaker need to be to achieve the same 105db peak if the D200's put out 325 watts @ 4 ohms into a 4ohm loudspeaker.  Thanks.

[CIAudio]

Lets say the D200's 200 watts @ 8ohms requires an 8ohm loudspeaker of 89db sensitivity 1W @ 1m to achieve an 105db peak. What would the db's sensitivity of a 4ohm loudspeaker need to be to achieve the same 105db peak if the D200's put out 325 watts @ 4 ohms into a 4ohm loudspeaker.  Thanks.

Do a search on Google for SPL calculator...you'll find many of them.