Help identifying this horn - bolted to 2470

[Mazza]

Dear all,
I have these horns and am hoping for some help identifying them.....

9120791206

Many thanks for any assistance! :)

[Earl K]

Hi Mazza,

Your horn looks to be an RCF H9041.

Old RCF Catalogue pdf (https://bel-aqustic.com.pl/pdf/rcf/LOUDSP~1.PDF). See page 28.

H9041 spec sheet, pdf (https://lautsprechershop.de/pdf/rcf/h9041.pdf)

I know the H9041 well since I use it in a custom designed front-fill ( or delay ) box ( using a 2123-10" midwoof mated with a 2425h-H9041 combo above ) .
- It's best crossed over above 1.6K ( IME ) due to the small mouth area of the horn introducing significant ripple ( a hole ) below that point .

:)

PS; ( since I know that you like to build things ) here's an ancient near-field response trace made more than a decade back;

91208

[Mazza]

Hi EarlK,
Again, many, many thanks for sharing your apparently bottomless well of knowledge, experience and wisdom!

:banana: :lurk: :dj-party:


BTW, the 2470's are for my 4331 restoration (https://www.audioheritage.org/vbulletin/showthread.php?43069-JBL-4331-rebuild-using-2445J-and-JBL-woofer-would-this-be-a-good-idea-Help-pls!). Been slowly gathering parts, still looking for the original 2312 horn.

Now what to do with the RCA H9041's???? :D