Thanks for that insight, Vapor1. I'm in the planning stage of building a pair of JBL 4345s. However with 2206s for mid bass and 2441/2390 for horns instead. Bass drivers will be the original 2245s as will the 2405 tweeters. I'll also increase cabinet volume a bit to about 11cu.ft..1/2" HDF sandwiched between 2 layers of 1/2" baltic birch with a layer of 1/16" thick modified roofing felt between innermost 2 layers. Oak veneer. They'll weigh a good 200 or so lbs. each without drivers. Drivers themselves for each side weigh 100lbs. A pair of Behringer DCX 2496s to cross them over and 3 Acoustat TNT 200s and 1 TNT 120 rebuilt by Roy Esposito of Sounds Like New. I have everything but the cabs.
