Horn speakers are really bright?

Thanks biggreg little pricey I was hoping for 1500 but yes CF4 V1 worth it mine is V2 

I wish I could have had 1 of those CF4’s back when I used a KLFC7 for my center channel, would have been killer. 

Depends on your cables and electronics(should be tubes) with the right match can sound wonderful.

Hello lordrootman.  Many horn drivers used  for mid-range and tweeters are very efficient: 95 db+. Most woofers are not nearly that sensitive. If someone tries to pair a sensitive horn tweeter with an average woofer, an unsatisfactory result is likely.  Always try to match the sensitivities of the drivers in a multi-speaker package. That way, you will not have to use resistors in the crossover to reduce tweeter sensitivities. Resistors waste power and prevent the amplifier from accurately compensating for speaker errors (reduces the damping factor). A mismatch in driver efficiencies generally results in a harsh of screechy sound. It's not the drivers fault! Horn tweeters using non-peizo compresson drivers generally have large magnets and can provide excellent performance at reasonable cost. Use plastic horns (vs. metal) to avoid ringing. You can coat the outer (rear) surface of the horns with auto undercoating to make them acoustically inert. The early AMT tweeters (still being sold) have large metal surfaces (part of the magnet structure) exposed to the sound coming from the diaphragm. I glue tea towel or sock material (cotton) to those surfaces to knock out the resonances caused by the reflection off those surfaces. Huge improvement! Use silicon rubber and you can always remove it easily if you experiments don't work out well. Experiment, Enjoy the music!

My friend who a DIY speakers builder come to conclusion that compression drivers with metal diaphragms are so transparent and detailed and it shows imperfection of electronics.

One example from my experience, when I just bought 300B amplifier I used it with Spendor 2/3 and Altec 604E speakers. With Spendors sound was good but with Altec was some harshness. In the end the reason was bad (harsh sounding) cheap 6f6 drivers tube. When I replaced them to better 6f6 harshness on Altecs was gone. But on other hand, Spendors didn't sound harsh even with the bad 6f6!