I recently bought a pair of "professional" LaScalas (the black ones with the handles), and I'm using a Yamaha RXV2090 receiver with them. The Yamaha has a feature called "bass extension", which adds 7 db at 70 Hz. I have been using that feature, and I love how the Scalas sound with the added bass boost. My question is: could use of that boost cause problems for the woofer? I have been told probably not by a couple of Klipsch authorities, but I would love to get the opinions of some of you. Many thanks!