Members guitarbilly74 Posted March 23, 2012 Author Members Share Posted March 23, 2012 I havent tried it yet, but thought about doing it.Go to Lowes or Home Depot. In the lawn & garden section, they have these things that look like giant drink coasters. They're cork on one side, and some kind of wood on the other. They make a size thats perfect for blocking off a speaker hole. Just mark the screw holes w a sharpie & drill the holes for the screws & wa-la. I ended up painting mine black so you couldnt tell they were in there. The 2 Eminence Delta LF's in the already oversize cab sound MASSIVE. Im eventually gonna put another jack in the back & another pair of 12's, so I can run 2 heads into one cabinet. I have a pair of celestion AVTs that I will probably install just to cover the holes. They're very light weight too. My main goal is to change the impedance of the cab back to 4ohms because my Randall REALLY works better at 4ohms. Buying the Texas Heats at 8ohms was a bad move, I should have gotten the 16ohms. Link to comment Share on other sites More sharing options...
Members guitarbilly74 Posted March 23, 2012 Author Members Share Posted March 23, 2012 i can't believe you guys still lug 412s around, they are so heavy. We also like women and we don't wear make up Link to comment Share on other sites More sharing options...
Members ej Posted March 23, 2012 Members Share Posted March 23, 2012 the way my brain logic works suggests it's for stabilization / stiffness of the back panel, making the sound tighter / less "loose" This. I literally just added one to my buddy's cab. Link to comment Share on other sites More sharing options...
Members primeholy Posted March 23, 2012 Members Share Posted March 23, 2012 yeah i was just messing, dude, i love 412s. Your nerineing was too deep. Link to comment Share on other sites More sharing options...
Members sled Posted March 24, 2012 Members Share Posted March 24, 2012 One thing is the front and rear frequencies are of opposite polarity. So with sufficient coupling, the center block will have a tendency to couple the front and rear panels helping to cancel the panel vibrations or dampen the panel resonance. This possibly dampens unfriendly resonances. Link to comment Share on other sites More sharing options...
Members charveldan Posted March 24, 2012 Members Share Posted March 24, 2012 I always screw thru the back into the center posts of my Marshall cabs. Link to comment Share on other sites More sharing options...
Members Rey Gato Posted March 24, 2012 Members Share Posted March 24, 2012 If you get vibration with the brace, just add a screw from the back panel into the brace. Works great. EDIT: Hah, never mind. already mentioned. Link to comment Share on other sites More sharing options...
Members Norton666 Posted March 24, 2012 Members Share Posted March 24, 2012 I took them out of my cabs. When they are getting loaded in and out of a trailer day after day , they get to be a pain in the ass. I cant tell you how many times my cab would be rattling and I pull the back and that damn thing is laying in the bottom of the cab or hanging there by a thread. I cant tell any tone difference whatsoever in the tone without them Link to comment Share on other sites More sharing options...
Members Krank'N Posted March 25, 2012 Members Share Posted March 25, 2012 It depends on what you eq for and how loud you get. When you need the brootz then the brace helps to tighten up the bottom a bit. Often it is screwed directly to the back and problem solved. If you are worried it will fall off in transport even more reason for one extra screw! Why spend time and $$$$ for equipment and then not maintain it? Link to comment Share on other sites More sharing options...
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