Croc Posted April 9, 2006 Share Posted April 9, 2006 Hi,pls advise me on Lascala bass bin bracing. I made some quick temp bracing and it did good. But i want to do it permanent, good looking and tame the sidewall just a right amount and not too much............ Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 9, 2006 Share Posted April 9, 2006 Well, it's a horn, so you can't get it TOO stiff! Most I've seen amount to two triangular blocks (on each side) placed within the horn mouth. I don't know how you'd install them and look good unless you used small glue blocks for cleats inside the cabinet. They have to be tight so they won't buzz. Consult Greg928S, he's one of the cabinet experts. Michael Quote Link to comment Share on other sites More sharing options...
J.4knee Posted April 9, 2006 Share Posted April 9, 2006 Interesting I tried a temp brace of my La Scala bass bins and found it thinned the bass some. I posted my results but it was a while ago. My observations showed the most critical area to reduce cabinet resonance were in the middle front to back and top to bottom. I could not do this without a permanent alteration of the cabinet so I abandoned the idea. I think Greg928s4 did this mod to La Scala he refinished and indicated this mod also weakened the sound of the bass. I know Klipsch eliminated a significant amount of cabinet resonance and had to re-voice the speaker to restore/improve the bass. Andy (HDBRbuilder) indicated the best method aside from inserting a wedge into the bas bin would be to add more mass to the side of the cabinet by attaching another sheet of ½ or ¾ plywood to it. This is similar to Klipsch approach using 1 MDF to construct the bass bin. To me the most effective way to establish good bass from stock La Scalas is push them deep into corners and use a filter/network that allows you to trim/adjust the squawker level to balance the overall sound. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 9, 2006 Share Posted April 9, 2006 help me out with this 'thinned the bass some'? what was your experience? I wonder if my LSI's having the fibreglass matting for additional stiffness and perhaps some dampening and the aluminum edge trim furthering stiffness changes the tone of them compared to a normal LS? Quote Link to comment Share on other sites More sharing options...
J.4knee Posted April 9, 2006 Share Posted April 9, 2006 My experience was the temp mod I made which was bracing a 2x4 with a notch cut in it into the bass bin made the bass seemed a little anemic. I posted my numbers measured with an SPL meter, here is the link: http://forums.klipsch.com/forums/ShowThread.aspx?PageIndex=3&PostID=565078#565078 Quote Link to comment Share on other sites More sharing options...
greg928gts Posted April 11, 2006 Share Posted April 11, 2006 help me out with this 'thinned the bass some'? what was your experience? I wonder if my LSI's having the fibreglass matting for additional stiffness and perhaps some dampening and the aluminum edge trim furthering stiffness changes the tone of them compared to a normal LS? I think this may be true. Also, if you have the K-43's in them, they don't extend quite as deep as the K-33's, and probably not quite as efficient. The K-43's take more power and can have overall greater output, which is good for a P.A. application. Greg - www.dcchomes.com Quote Link to comment Share on other sites More sharing options...
Marvel Posted April 11, 2006 Share Posted April 11, 2006 The SPL is higher for a K-43 than the K-33. It has a much larger magnet structure. Quote Link to comment Share on other sites More sharing options...
Croc Posted April 12, 2006 Author Share Posted April 12, 2006 so what do you say? screws? glue? triangles will do fine? what is an angle of it? 60 degrees? Quote Link to comment Share on other sites More sharing options...
Marvel Posted April 12, 2006 Share Posted April 12, 2006 You will have to custom fit each piece, due to slight inconsistencies in the construction of the doghouse and placement in the rest of the cabinet. Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted April 12, 2006 Share Posted April 12, 2006 Croc, Here's a good example.. AL K. Quote Link to comment Share on other sites More sharing options...
Myhamish Posted April 12, 2006 Share Posted April 12, 2006 Upon reading this, my first impression was 'what bass?' (lol) However, I read here once (but never tried it) about double laminating the whole outside of the cabinet with mdf to take the vibration out. You'd need a fork lift to move it. Hamish Quote Link to comment Share on other sites More sharing options...
djk Posted April 12, 2006 Share Posted April 12, 2006 Aluminum vs wood (old RCA) Quote Link to comment Share on other sites More sharing options...
Croc Posted April 15, 2006 Author Share Posted April 15, 2006 aluminium is a nice idea. will be much more expensive though......... also it might "ring" unless i invest in dumping....... Quote Link to comment Share on other sites More sharing options...
djk Posted April 15, 2006 Share Posted April 15, 2006 The aluminum would be very expensive. The cabinet shown is for flash in a night club setting, looks being important. I would make two braces per side, 2-3/4" wide, and glue them on edge from the back to the front, and bevel the front edge back at an angle for looks. I've done this, it works. It's easy, and looks good too. I don't have the capacity to post a drawing though. Quote Link to comment Share on other sites More sharing options...
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