Altec 416-8B Crossover Frequency Question, etc.

[Spackler]

Hi GM, thank you for the informative links and useful answers.

Still trying to figure out the crossover point and slope but am leaning towards 800 or 1200 Hz

I was primarily steering away from the M19 cabs as I had Electro Voice Sentry IIIs before and wanted to try something that was a little taller and a bit less wide, partly due to WAF and also due to the fact I am slightly limited in how wide I can go in my room.

One more rookie question if you don't mind but how does one go about EQing a horn?

Clearly I have a lot to learn here so again, thank you in advance.

Greets!

What is the XO's point/slope?

Based solely on Altec 416-8B measured, JBL published 2380, polar data, the 90 deg/-6 dB horizontal line-up is at 12.5 kHz, though with the 2380's wide tolerences, the M19/12 kHz XO should work fine if the M19's horn, woofer ctc spacing, cab width is same as the M19's and guessing without any design details the Werner's M19 XO for that matter, though best of course to discuss with him.

As for 416-8B performance at this XO point, find it hard to believe it has any real audio issues based on M19/12 kHz XO being the most popular of all Altec consumer & numerous (most?) DIY designs TTBOMK, not to mention my experience using it in numerous different speaker alignments, though for differing personal preferences/reasons have mostly kept XO's limited to Altec's 'textbook' 500, 800 Hz/2nd and used separate filters (various values of the 30923 + CD horn EQ), horn tweaks to fine tune them nominally flat ~full range or as required in room where possible.

That said, really need to measure or use digital EQ/TD to dial in a good horn/woofer summation in the desired listening window location.