at 25x40 you have 1000 square feet, 2 imps shouldnt be too much for that, if it is, it wont be by much, just open a big window and the upstairs door, you should be fine.  besides that, if you lay the pair on thier sides and put the mouths next to one another you will effectively double the hornmouth area, lowering extension even further

and theres no such thing as "too much" stop spreading your ultra-conservative poison.

JJ

Howdy Geoff,

As I remember, you have a "full range" Imperial .....

If it were me, a proper "mate" would be built with no delay .....

After living with my SO Imperials for a few weeks (and enjoying them totally), I hope to have a pair of full range Imperials built some day.  The ones in Steve's "those ain't big" thread are beautiful and no doubt produce an amazing sound .....

Is there any chance you can attend the 2006 DecFest ?  It would be great to meet you .....

Best wishes,

Randy