The Tweeters used in Tektons top models are Scanspeak.  Not cheap drivers.  Even the Eminence pro woofers are their best driver.  The problem with Tekton is an absolutely horrible cabinet with extreme resonance and all the drivers back waves firing into the box without sub enclosures, damping and bracing.  I've owned a few pairs and can tell you it's a novel design that is fun to listen too but lacks refinement.