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After disappointing results of some super-tweeters, and the terrific results the Beyma CP22 gave me, I decided to buy the sibling version CP21.

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Both CP22 and CP21 share the same diaphragm and same strong ferrite motor. The CP22 has a bullet horn, while the CP21 has a diffraction slot, which provides wider horizontal coverage, but has some time domain anomalies and less linear frequency response. Whilst the CP21 requires additional equalization, the payoff is a wider coverage.

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The measurements are below.

Below is an overlay comparing the CP21 and CP22

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Remember, I have a French mother tongue, doing my best to express myself in the Shakespeare language.

Thanks to a friend, Bevis, most of my website has been corrected for proper English grammar, much easier read now :)

 

Any suggestion/comments,  feel free to E-mail me.

mapoulin@gmail.com

Update May 2024: this website won't be updated for a while as WIX decided to max storage capacity at 500 Mb unless you pay a monthy fee to obtain more storage (the site is already at 2.4 Go).

I may merge the site to another server or find a solution but in the meantime, I can't add anything but text, Sorry
 

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