I am upgrading the basic ( non HK ) sound system. I replaced the front speakers with a pair of used Boston Pro 6.5s I got from Ebay. They seemed a little bright, so I attenuated the metal tweeters -2db in the crossover. However I noticed that there is another adjustment in the crossover to choose on or off axis. I think the tweeters are on axis. Assuming that it means that they are pointing at my ears. thanks for any advice