Here's a different approach that I took on open baffle woofers, I got this idea from a member on audio circle. The idea is to brace across the woofers magnet to stiffen the drivers frame. I was running the eminence alpha 15 up to 200 hz, with the bracing it ran to 350hz and very clean bass. Trying to run them above 200hz without the bracing didn't sound at all good. This may work on many drivers. Very simple to fix a timber across the cabinet or between the magnet and cabinet back. Just a thought for any diyer
Bakoon 13r Denon DP80 Stax UA-70 Shure Ultra 500 in a Martin Bastin body with jico stylus, project ds2 digital Rullit aero 8 field coils in tqwt speakers
Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons yulong dac Sony STR6055 receiver Jvc QL-A51 direct drive turntable, Leema sub. JVC Z4S cart is in the house
Garage system another Sony receiver, cassette deck
System components are subject to change without warning and at the discretion of the owner.