Martin Poulin
Below is a DATS measurement of the B&C DE35 tweeter
The manufacturer applies a big scale chart to hide impedances anomaly.
However, measurements actually appear consistent with the published datasheet.
​
Below is a DATS measurement of the Transducer Lab N26MG-G tweeter with a magnesium dome.
The manufacturer’s datasheet matches the measurement within 5%!
I like this brand very much, as I own a few of their products.
Below is a Celestion CDX1-1445 mounted on a FaitalPRO STH-100 horn
Below is a Beyma CP22 tweeter
Below is a Transducer lab N26C-t, ceramic dome and Titanium voice coil) with a diy front horn attached in front
Below is a Transducer lab N28BER, beryllium dome, with a diy front horn attached
Below is a newly acquired BEYMA CP21 (brand new)
On the left is an overlay of the Beyma CP21 and CP22
Makes comparison easier.
​
Identical motors and diaphragms.
CP22= bullet front horn has a narrow 40° wide dispersion
CP21= 140°degree wide dispersion, inspired by the JBL 2405 slot tweeter.
​
The CP21 has lots of horn resonance, as seen by the impedance curve. This doesn't bode well, but wide dispersion tweeters do offer big acoustic advantages. Some trade-off to consider.
​
Subjective evaluation will dictate which design matches my system best.
Nothing better than actually trying both out, instead of deciding through reading countless reviews. Review tend to favor the CP21.
​
(update Mach 2020, I prefer the CP22.)