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Khorn Decorators to Khorn B Style Questions


thebes

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My $500 khorns are in da house and playing away for over a month now.  Love it! 

 

They are classic Decorators, painted black and the bottoms of the fonts as well as some other areas, are splitting at the bottom  and dinged up.  Eventually I could bring in a buddy of mine to veneer them.

 

Time to start fiddling with them, though.  Freshen the AK2 xovers, and am seriously considering changing them over to b style.

 

Questions.

 

First, and most important, is when I go to B style the mid and high horns will be raised at least an inch and a half if I use Baltic birch on the new bottom, plus the spacer.  Will this play havoc with the sonics?  The spacing is about 14 feet apart on center and I'm worried than the additional height on the top parts will make me feel like I'm sitting below the stage, rather than even with the stage at my listening position.

 

Second, if I do this do I keep the current motor board, and if so, how  do I do a cloth finish on the fronts?

I'm worried that in cutting off the current motor board, which is obviously glued, that may not go well, which means another sheet of Baltic birch at $65 a pop. 

 

Third, does anyone whose done this have some good pics, measurements they could share?

 

I'm trying to sort this out, do the top part first so when I enclose the backs of the bass bins I won't affect what I've done with the top part.

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My pics are buried on this website somewhere. I just used the iron on veneer after filling  the dings in the wood with fiberglass resin, dabbing it in with a paint brush then sanding flat. The iron on veneer will bend around a sharp 90 degree corner. It is a bit tricky though. Then on the tweeter /mid horn assembly i added sides and top and glued and screwed same into additional inside corner pieces, something for the screws to screw into from the inside out so you don't have to finish off the outside of the panels.The screws have to be the exact length so as not to penetrate the outside of the panel. I also added a rear support on the top hat to keep vibration down. I did not add the false corners to the bass bin as the normal K-horn cabinet has. I fashioned custom grill cloth based on the new system that Klipsch uses mounted into rubber inserts keeping the cloth 1/2" away from the cabinet only on the top hat assembly. I did not add any cloth to the bass bin. Then I installed the unused pie emblems which were hanging in a bag on the backs of the units for about 30 years. All my pictures were on the old forum before the change. I will see if they are still on the computer.

JJK

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Well I have done this to mine but they were C style. From what I see in the picture the motor board is separate piece from the bass bin. So just take it off then put strip of birch to fill in that gap. Then veneer the whole front seems pretty easy.

The motor board will have to be built on to make it like a B style then either cover it with grill cloth or veneer it.

Can you post the dimension's of your motor board so some one can verify that the motor boards are all the same.I bet they are.

You will have to make a top and bottom to the top hat and a spacer also.

Seems like a lot of work ..why not just enclose the top of what you have and veneer it and be done? That way you can get fancy veneer to put on the whole thing with money you did not spend on spacer and top hat.

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Everyone deserves not only my thanks but a reply on this one.

 

Zim, yes I do slouch a bit while listening, despite stern admonishments in my youth from the nuns.  I'm not the most technical of souls so I am worried about time delays, and the fact that it's a small venue for Khorns.  My buddy here, GaryMd has even smaller room constraints, and sometimes on his khorns it sounds like the singers are ten feet tall.

 

JJ, thanks for looking around for your pics. Exactly what I was hoping for if you can track it down. One thing to point out, though, is that I cannot enclose the backs unless I have the same configuration as  on the bottom board is what it is now.  If I remove the top the bottom bass bin is basically a triangle which won't work for enclosing the backs.

 

Rick, I hadn't thought about just enclosing the top and veneering everything that way.  Then maybe build some side channels, paint them black and leave them open, or covered with cloth as the case may be.  Could be the way to go.

 

As far as the dimensions of the motor board, I've never been quite sure what the motor board actually is. If it's the piece that the horns are connected to, it's 31 and 3/16" wide 10 and 9/16" tall .If it's the bottom board where the midhorn rests, it 31 and 5/16's " wide, sides are 12" deep and the back angles are 22" long on a side. Front-to-back on center is 27 and 1/8".  These are mid-80's decorators.

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