BR928 Posted June 12, 2011 Author Share Posted June 12, 2011 Sides attached to the bottom/top. Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 12, 2011 Author Share Posted June 12, 2011 Completed assembly with rear braces (Complete, less front mounting flange that is).The rear braces serve to fix the 1" x 1" opening of the top/bottom in the vertical direction. The dado fixes the sides in the horizontal direction. The rear brace with it 3/8" hole will attach the horn lens to the round to square transition piece via a 1/4-20 bolt. Quote Link to comment Share on other sites More sharing options...
costerdock Posted June 12, 2011 Share Posted June 12, 2011 Great work - those are going to be nice - cannot wait to see the finished product. Quote Link to comment Share on other sites More sharing options...
Arash Posted June 13, 2011 Share Posted June 13, 2011 Nice work... charming ... good you have all tools needed at hand, here we have just a drill, jig saw, screw driver and that's all... but you got CNC and many other tools... Quote Link to comment Share on other sites More sharing options...
TheEvan Posted June 13, 2011 Share Posted June 13, 2011 Yeah, Stan, we're having tool envy here. Well, I'm having brain-smarts envy, too. Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 14, 2011 Author Share Posted June 14, 2011 Out of the clamps and cleaned up. Ready to veneer the front edge and attach the front mounting flange. Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 16, 2011 Author Share Posted June 16, 2011 Front edges veneered and finished. Front mounting flange attached. After a little cleanup it's ready to go into the cabinet. It's about time! Quote Link to comment Share on other sites More sharing options...
Arash Posted June 17, 2011 Share Posted June 17, 2011 Front edges veneered and finished. Front mounting flange attached. After a little cleanup it's ready to go into the cabinet. It's about time! very nice job... you shouldn't put them into cabinets... you should put them in Metropolitan Museum of Art... they are beautifull... WOW Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 18, 2011 Author Share Posted June 18, 2011 This is the 'round to square' transition piece. The threaded inserts are used to bolt the transition piece to the horn lens. The other three are to attach the threaded JBL driver adapter to the transition piece. A little sanding and this is ready to bolt on. Now who said you can't put a square peg in a round hole? Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 18, 2011 Author Share Posted June 18, 2011 After the JBL adapter is attached. Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 19, 2011 Author Share Posted June 19, 2011 After getting the tractrix horns mounted into the cabinets, I had to get an idea for what the finished product was going to look like. The design goal was to preserve the classic cornwall enclosure proportions while stuffing a 7 x 20 tractrix horn into it. Works for me! Going to be ashamed to cover the front with grill cloth! Quote Link to comment Share on other sites More sharing options...
chuckears Posted June 20, 2011 Share Posted June 20, 2011 Going to be ashamed to cover the front with grill cloth! ...so don't! Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 20, 2011 Author Share Posted June 20, 2011 Finding a home for the ALK's. 1 Quote Link to comment Share on other sites More sharing options...
Guest David H Posted June 21, 2011 Share Posted June 21, 2011 Finding a home for the ALK's.Nice crossover choice. I am currently building a set of split Cornscala's using the AP-12 and ES5800. Dave Quote Link to comment Share on other sites More sharing options...
TheEvan Posted June 21, 2011 Share Posted June 21, 2011 Fantastic work, Stan... Quote Link to comment Share on other sites More sharing options...
Tony Reed Posted June 21, 2011 Share Posted June 21, 2011 BR928, Love the horns. I'd like to try my hand at building some of those. Where can I find the trachorn.exe app? Thanks, Tony Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 21, 2011 Author Share Posted June 21, 2011 Tony, I grew up in LR! Al had it posted somewhere on this forum. If you can't find it send me a PM. Quote Link to comment Share on other sites More sharing options...
Ironsave Posted June 21, 2011 Share Posted June 21, 2011 In one word.... WOW. No need to cover those with grilles. Absolutely stunning......... [Y] Quote Link to comment Share on other sites More sharing options...
BR928 Posted June 23, 2011 Author Share Posted June 23, 2011 The original design concept was to keep the original Cornwall cabinet proportions. Here is the key to this design. The midrange horn extends through the enclosure with the driver mounted externally. This is one of a three part back. This design inherently acts as a front to rear brace. I also added some sound damping material to the sides of the horn. I figured it could not hurt! Quote Link to comment Share on other sites More sharing options...
Guest David H Posted June 23, 2011 Share Posted June 23, 2011 I also added some sound damping material to the sides of the horn. I figured it could not hurt!Good plan, Bruce Edgar warns against using a single layer sides in his book. I assume dynamat or some other high quality dampening material will work.Very nice work. Dave Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.