DIY PA Speakers Setup (Line Array)

Compact quasi horn.
 

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I have been reading your articles from here and other forums, how is the Quasi double 18 sound and can I use Faital Pro 18" Neodymium? And do you have any plots from other woofers? Thanks🙂

Plots from simulator do not have anything common with real life measurements... You can use Faital Pro 18 in Quasi Horn and you can espect 4-6dB greater SPL from 80 to 150Hz compare to bass reflex.
Regards