I debated resurrecting this old thread, but it seems to come up in search results for RAAL tweeters, so I figure I ought to given the seed of doubt this thread may plant in people researching them.
Dave from Ascend was very helpful in trying to help me realize the speakers' potential back when I started the thread. When they still didn't sound spectacular to me after trying his suggestions, I figured I must just be in the minority who prefer the sound of dome tweeters like some replies here suggested may be the case. I was jealous any time I heard the crispness and shimmer of cymbals, etc. on other speakers, though, and kept telling myself that one day I would face the aggravation of trying to sell mine and replace them with something that delivered everything I wanted. All of that changed yesterday.
I'd been watching and listening to everything via the HDMI output of my computer's video card into a Marantz receiver. At one point I'd looked for an equalizer in the Marantz's settings to see if tweaking the high end made a difference, but couldn't seem to find one and settled for the sound Audyssey provided. (I suppose I must not have looked hard enough, because I just discovered that an equalizer becomes available if you disable Audyssey - perhaps that became available via a firmware update sometime after I'd checked). I tried Direct and Pure Direct, too, as suggested. Anyhow, yesterday I happened to hit properties on the audio playback device in Windows, noticed there was an equalizer under the Enhancements tab, and gave the 16k frequency a little nudge.
Boom. All of the sparkle, shimmer, and sizzle I'd thought the speakers were missing because of the RAAL tweeter were there all along! I was so excited to discover this, I reached out to a friend of mine who'd had a front row seat to my speaker experience and couldn't stop telling him that this changed everything and I loved my speakers. I called my wife and told her, too.
If you're reading this thread because you're researching whether to get RAAL tweeters, don't be put off my by it. My experience was a result of my inexperience. If you're reading this because you expected great things from your RAAL tweeter speakers but weren't blown away, try giving the 16k frequency a nudge via your computer, receiver, etc. depending on your setup. It changed everything!
While I wish I'd figured this out a couple of years ago, better late than never! Thanks, Dave from Ascend, for the awesome speakers!