Chorus1 Fan Posted March 8, 2021 Author Share Posted March 8, 2021 18 hours ago, jjptkd said: I had a pair of damaged kg 4.2's that ended up in a fire pit I thought they were plywood as well until I broke them apart. Anyone here ever had or seen a "broken" Chorus 1 side panel? (Mookie?) Or burnt one 😂 Aha! "playing detective" I flipped em & took a pic of the riser wood. It's veneered (?birch) MDF just like you described. so I'm sure the sides/top/bottom are the same stuff. Still makes me wonder why Klipsch did that (cost, accoustics, etc.) I posted my "why" question over in the ask the historian section to widen the opinions ( esp. for Jim & HDBRBuilder's) Quote Link to comment Share on other sites More sharing options...
MookieStl Posted March 9, 2021 Share Posted March 9, 2021 Only thing I saw was water damaged mdf. I do know the motor board was 1" plywood. Sides mdf, not sure of the back. They weren't my speakers so I really didn't mess with them that much. Just measured them and built new cabinets. Matthews took all the drivers out, put them into the new cabinet that he finished out. I did add a few braces to the design though. Quote Link to comment Share on other sites More sharing options...
314carpenter Posted March 9, 2021 Share Posted March 9, 2021 On 3/7/2021 at 12:59 PM, tigerwoodKhorns said: Go for it. I'll probably do my Chorus IIs someday. Check these out, nice bracing Here's how a couple of pairs I own are braced. You can see in the cross-section middle drawing. Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted March 9, 2021 Share Posted March 9, 2021 14 hours ago, 314carpenter said: Here's how a couple of pairs I own are braced. You can see in the cross-section middle drawing. Those are some fine looking speakers! Do you happen to have a higher resolution image of the this? Quote Link to comment Share on other sites More sharing options...
314carpenter Posted March 12, 2021 Share Posted March 12, 2021 On 3/9/2021 at 11:17 AM, tigerwoodKhorns said: Those are some fine looking speakers! Do you happen to have a higher resolution image of the this? post #4 click the link there. http://www.audioheritage.org/vbulletin/showthread.php?3727-plan-for-jbl-250-250ti&p=34264&viewfull=1#post34264 1 Quote Link to comment Share on other sites More sharing options...
Chorus1 Fan Posted March 18, 2021 Author Share Posted March 18, 2021 Here's a pic of the small "cleat" glued on the side to side brace. This is what really glues the side brace to the side cabinet wall. You can also see my 3/4" x 3/4" brace on the front wall that provides additional stiffness to the narrow (weak) spot between the mid horn & woofer mounts on the front motorboard. (The 3/4" x 3/4" brace in the corner that runs top to bottom of speaker is a factory Klipsch piece on all 4 internal corners. The top/bottom corners have this too) 1 Quote Link to comment Share on other sites More sharing options...
Chorus1 Fan Posted March 19, 2021 Author Share Posted March 19, 2021 Crossovers are now done & ready for re-install. All the caps were the Klipsch originals from 1989 & due for a changeout... I ordered the "new" Klipsch approved JEM capaciter kit from Jim for 64.00. Then I had my local vintage stereo expert install em (been in business 35+ years) Probably be about 2 weeks before I sound test em though, gotta finish up the 7" port extensions 1st 3 Quote Link to comment Share on other sites More sharing options...
JDJohnson Posted March 20, 2021 Share Posted March 20, 2021 You’re doing good and you’ll be enjoying them soon. 1 Quote Link to comment Share on other sites More sharing options...
Chorus1 Fan Posted March 25, 2021 Author Share Posted March 25, 2021 The ports are almost ready for install, they just need a final layer of A/C metalized tape over my glue joint (I use the foil tape made for a/c duct joints to provide extra stability) 3 Quote Link to comment Share on other sites More sharing options...
Outrider 6 Posted March 25, 2021 Share Posted March 25, 2021 Ports look great. Where did you get the tubing and the flared ends? 1 1 Quote Link to comment Share on other sites More sharing options...
Chorus1 Fan Posted March 25, 2021 Author Share Posted March 25, 2021 On 3/25/2021 at 8:14 AM, Outrider 6 said: Where did you get the tubing and the flared ends? I tried EVERYTHING, (too big, too little, etc.) & finally found these at a chain craft store called "Michaels". They're almost an exact fit. 1.) push them thru from the inside outward until about 3" sticks out the front. 2.) wind 2-3 layers of electrical tape around the end until it's a tight "press fit". 3.) pull it back thru by working it/wiggling it & install flush to the surface. 4.) Hot glue the inside seam, where the ports/wood meet. (makes em rock solid) I also use my chop saw with a fine tooth blade to trim to length. In the pic the right one is trimmed & the cut piece beneath it. https://www.michaels.com/white-shipping-tube-by-celebrate-it/M10323409.html?dwvar_M10323409_size=4&utm_source=CJ&utm_medium=2470763&utm_campaign=14079089&cm_mmc=Affiliate-_-CJ-_-2470763-_-14079089&affSource=2470763_14079089&cjevent=2c79bd6994ee11eb827d02db0a82b82c Here's a Link. My pic is from my 1st pair I did, (the 6.2" size), but the 10" size can be cut down into two ports (or 1 speaker), so cheaper to buy two 4 x 10" ones. 1 1 Quote Link to comment Share on other sites More sharing options...
Chorus1 Fan Posted March 25, 2021 Author Share Posted March 25, 2021 The inside portions are 4" INTERNAL port flares (external one is shaped a little different) from "Parts Express" https://www.parts-express.com/Precision-Port-PSP-4IF-4-Inside-Flare-for-Port-Tube-268-377 1 1 Quote Link to comment Share on other sites More sharing options...
Chorus1 Fan Posted April 2, 2021 Author Share Posted April 2, 2021 Ports are in, & the lower bracing below the woofer opening is almost finished. I still need to glue in the crosspiece that ties the front-to-rear braces together. The "crosspiece" braces are what takes the flex out of side panels, (1 upper & 1 lower). 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.