<blockquote id="quote"><font size="1" face="Arial, Verdana, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Even though the 340s are only a little more efficient on paper than the 170s, it made a significant difference to the "big" sound I was looking for.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

The efficiency is not really an indicator of "big" sound, just how loud a speaker is at a given power input. I think one of the big differences between the 340 and 170 is the dispersion....much wider it seems on the 340, which I think helps create the bugger soundstage.

-curtis