| 4 pi speakers with existing cabs [message #91295] |
Wed, 01 January 2020 16:14  |
Jerry Look
Messages: 1
Registered: January 2020
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Esquire |
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I've been interested in building some 4 pi speakers for a while now. It's been on the back burner because of so many other projects. I just picked up some speaker cabs that are almost perfect for this.
I bought some TOA speakers that were installed in a church. They have no corner protectors, handles, or other junk like a normal PA speaker. They are 3/4" mdf construction. The cabs are
27" tall
19" wide
15" deep
Very close to the 4 pi dimensions. The speakers have two 3" ports. The cabs are pretty solid. I do plan to add some bracing on the sides and back.
My questions are these-
Can I sub the JBL 2225 in place of the 2226?
Can I sub the PRV D290py in place of the B&C DE250?
I assume I should keep only one of the ports per cabinet. What length would a 3" dia port need to be to tune the 2225 woofer? Or the equivalent cab tuning to the rectangle port that is on the 4 pi.
I appreciate any help you guys can offer. Here is a pic of one of the cabs I'm working with.
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