Hi, Stefan
I like your idea (of the CP21/F Slot Tweeter and 2 ALPHAS-dispersion at high and low freq.) that’s why I keep looking. There is a similar TW from Selenium that has a Slot and that is ST324 with 103dB (and ST322 +2dB) for $25.13.
http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=264-360&ctab=2#Tabs
The reason I say this is that maybe you can manage to find a fit. There is a kit with Selenium parts from France that uses a 10” Woofer and this Super Tweeter.
http://www.mhdiffusion.fr/produits.php?de=0&m=SELENIUM&c=kit+hp
The difference is that the woofer goes a little bit further to 4k and the tweeter with Fs (resonance) a little bit earlier at about 2k7 what makes them suitable for a marriage. Now, I checked about APT’s from Eminence and they seem very good with resonance at 2.5kHz. There is one APT50 and APT80 ($34.99)/APT150/APT200 pre-mounted ‘to your choice of the horn lens’ as an example from the site.
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=113
Since your ALPHA 8 rolls-off at 3K5 Hz there seems to be a good possibility...
Again, I like the CP21/F from beyma but I would use it only as a super tweeter from 5K or even more from 7K to 20’sK Hz. I guess you are saving money here.
With 2xAlpha 8’s (96dBs) and a ST324 you need more or less 7dB Attenuation for the high frequencies.
With 2xAlpha 8’s (96dBs) and APT50 (104/105dB) you will need an 8 or 9dB Attenuation. That’s my best guess. I bet that if you ask Wayne P. he can do a good ‘Rolls-Royce/Ferrari/Lamborghini’ X-over project that puts everything in place, with the power and dispersion that you need, and if you use the EMINENCE HF Drivers.
Best Regards.
Posting Rules
Members
Search
Help
Register
Login
Get a T-Shirt!
