Infinity Qb efficiency?

[chef free]

I'm doing a Infinity Qb vs. ADS L880 comparison. These 3-way, acoustic suspension speakers have 10" rubber surround woofers, similar size, weight and frequency response. They are going for about the same price on Ebay too. But I can't find anything on the interwebz about the efficiency of the Qb. Anybody know? Beatlefred?

 

[JBL GUY]

The correct term is sensitivity.

Found this at the top of the search list by using the correct search term.

Infinity Qb...

Sensitivity 89dB at 1 watt/1 meter



Specification sheet PDF

 

[chef free]

Ah! No wonder, thanks for the info JBY GUY. That is the same sensitivity as the ADS, surprising since the Qb is 4 ohm and the L880 is 8 ohm.

 

[icenine]

I have a pair of QB-1s with ribbon tweets.....awesome speaker.