longdrive03 Posted August 18, 2014 Share Posted August 18, 2014 Current project is building a larger vented Heresy. I'm using most of the guts from 1985 H (with larger 8 x 12 mid horn and K-79 tweeter instead of K-77). Updated the caps included 33 uf cap on E2 crossover and separating the network to allow biwire. Cabinet is 40" tall, 15" wide and 12" deep with 3/4" BB ply on sides, inside top and three internal braces, 3/4" mdf on back and bottom, and 3/4"mdf outer and 1/2" ply laminated together on motor board. Using cherry veneer on sides, top, back and bottom and waterfall bubinga on the motor board. Solid bubinga trim on front sides and top and solid cherry trim on top. Will be ported on back. This sucker is heavy without speakers installed. May need a truck to move it. Quote Link to comment Share on other sites More sharing options...
wvu80 Posted August 18, 2014 Share Posted August 18, 2014 (edited) That is a really nice looking box, an obviously very well thought out and executed project. It physically looks a lot like my giant CF-4's, at 108 pounds each. It is sitting beside my DIY SEOS speaker, Fusion 10. Compare the mat my speaker is sitting on, to yours. I'm looking forward to your listening reviews. Edited August 18, 2014 by wvu80 Quote Link to comment Share on other sites More sharing options...
angusruler Posted August 18, 2014 Share Posted August 18, 2014 WOW!!!! love the look of the motor board....purty! Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted August 18, 2014 Author Share Posted August 18, 2014 Thanks WVU. I play to weigh these puppies if it doesn't tear up my wife's scales!!! I imagine their around 70 lbs now without speakers. Were you the member that installed foam/wool on the inside of the woofer spokes??? What did you use? I've been using mortite on the outside of the spoke but haven't tried the inside. Thanks. Quote Link to comment Share on other sites More sharing options...
wvu80 Posted August 19, 2014 Share Posted August 19, 2014 (edited) I did not use the foam/wool, I think Alex G did that. https://community.klipsch.com/index.php?/topic/151115-epic-cf4-mods-amp-rack-build/#entry1753343 +++ I used a tube of pure GE Silicone Seal per horn to bring the "rap test" sound down about an octave, with no more ringing when rapping the horn with a knuckle. Mine has the K-63 compression driver. I then took out the 2 bottom sheets of stock foam and replaced them with a pound or less of Fiber-fil, from Wal-mart. It is in there loose around the ports, but not blocking the ports. The overall effect was that it eliminated that harsh distortion in the mid-range that completely irritated me, and lowered the overall sound about a third of an octave. So now a piano note has gone from a tinny, inaccurate sound, to a MUCH more natural and accurate sound. A piano no longer sounds thin and nasal, but full and accurate. I feel like I lost NOTHING with these mods. Edited August 19, 2014 by wvu80 Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted August 19, 2014 Author Share Posted August 19, 2014 Thanks for the info. I knew you had modded the CF4. I haven't tried the silicone mod - been using mortite puddy on horns and outside of struts on woofers. Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted August 19, 2014 Share Posted August 19, 2014 Very nice. imagine the sound will be great, too! Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted August 19, 2014 Share Posted August 19, 2014 Very nice. imagine the sound will be great, too! Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted August 27, 2014 Author Share Posted August 27, 2014 Finally got them finished last night. Sound sweeeet! Quote Link to comment Share on other sites More sharing options...
Heritage_Head Posted September 2, 2014 Share Posted September 2, 2014 Very nice work. How about some more pics Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 2, 2014 Author Share Posted September 2, 2014 Thanks Reference Head. Here are a few more pics. Sorry some are blurry - taken in my garage at night! On the next project now - reveneering and recapping 1975 Heresy for a buddy. Probably going with fiddleback anigre on this one. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 8, 2014 Share Posted September 8, 2014 I have done this, its a great mod. Bass was excellent. Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 8, 2014 Share Posted September 8, 2014 (edited) Another. As I recall, I had to mod the crossover to get a reasonably flat response. BTW, very nice work. Dave Edited September 8, 2014 by GotHover Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 9, 2014 Author Share Posted September 9, 2014 Thanks Dave. What mods did you make to the xover if you don't mind sharing? Thanks. Quote Link to comment Share on other sites More sharing options...
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