grindstone

Here's the flat vs. the orig color of the brackets. Thing had individual runs to 8 terminals plus the inputs on the back for approximately one zillion feet of tinned stranded zip cord. Got the magic phenolic reentrant (MT30 i think) off the 828HF and blasted the tweeter and squawk brackets today.

About done with the drilling-out fasteners, vacuuming, blowing, scrubbing (and scrubbing and scrubbing). Went through a couple belts hitting nails and miscellaneous stuff. Bottoms still need a good bit of attention. Turns out they were gloss and I got a coat of flat on. Started raining before they got dry It can all come-off again if it has too--these things make time and space conform to them (we have a respectful standoff for now after they hosed my back). Have not yet acquired rotdoctor but learned a Great Deal when sanding the woodhorn. Holy cr*p for loud Primary offender is the (largest-unsupported span) top. Bot and sides were no peach, but running a sander on the top and standing right in front of the mouth was instructive

for once there's plenty of room for bracing...

Thanks for the hospitality and the responses. I had no idea of such products. No plans I know of (hard to find anything in-fact), but they're a sort of "compact" version of the original Georgian IV's--maybe 50 lbs lighter and only around 4 feet tall--still 15wk's and pretty much khorn bass units of the time if I have that straight. 6x12 throats and the sinuses are used. Took a lot of pics during tear-down but they're all close/detailed/limited. This is about the best I can do for relevant photos right now. Really, what I heard was just a horn being a horn and I have no defense except blaming beer for why that seemed profound-enough to post about except for thinking of khorn crossing region discussions. Today, I'm a little more ambivalent in the sense, that, however-imperfect, what the thing does is what it does and maybe part of my stewardship of these lovely giants might be to let them be. Waffling. Also was thinking I'd like to rig something by way of reversible/removable clamps to hear what's to be heard. That stuff is pretty far-out, realistically, at the current rate I get to work on them and they're in quite bad shape. Either way, I'm interested in the data so hopefully I can take some soon. Tried to listen again tonight but the intermittent-contact-gods weren't with me--the MR was working Can't seem to figure-out how to do multiple images so maybe a following post for that. Thanks again.

Advance apology if this is inappropriate here; hoping this is a fair spot for an off-brand corner horn wonder. Quite rambling, too, but I'm working this out aloud in slow-mo. Should politely dip a toe for inappropriateness but life seems to allow very little time for audio let alone well-formed inquiries so I'll do a major-dump and hope for forgiveness later. Simple wonder, just complicated setup. Basically, currently-engaged in resurrection of Georgian 600's (eg attached please find the current state of utility cab candidate no1 for ref) and stumbled on something that spun my gourd tonight. So I'm listening to the other (untouched & fully-dress-cabbed yet) unit while working, right? Pots are toast, caps are 50-something, etc., the number of drivers that pass signal at a given time is highly variable Serendipitously, tonight I lose everything but the woofer. Usually the squawk works and I stick my head in the top woodhorn (reentrant phenolic 828 does 300-600 or something outta that thing + usually get the 600-to-3k+ outta the same 828 front radiation in the little horn easily visible in prev pic (t350 missing/removed in that photo)). For ref, LF cut target is 300 in this particular deal (x336). Well, pure conduction was producing non-trivial sound out of the 300 Hz horn. Didn't/couldn't measure in the garage. Hopefully I can get some numbers outside before winter hits here in the UpNorth. For completeness, I need to say I've been messing with speakers for long enough to have a fair idea about panels and radiation and stiffness and all that--in fact, anything more than a 5" span unsupported doesn't happen in any box outta my hands anymore. That-disclaimed in advance, I was blown-away by how much sound--howevermany dB down--I got by sticking my ear to the top woodhorn. Best guess is it's a '58 so the half-inch ply is from when ply was still half-decent ply. The 300 Hz top horn is glued (with cleats and nails) on top of the bass bin. Pretty-rigid/well-coupled, that way. Well, obviously the first thing I thought of was sawzalling that top unit off, adding a bottom/baseplate, and getting some isolation between the basshorn and the rest of the rig. And yeah, I realize that there are probably waaaay better 300Hz horns--maybe I'll get there sooner than later, but I'm still cleaning mouse turds and bleaching mildew Baby-steps... I've never owned a capital-K actual forum-sponsored khorn, but I see some differences in top-module risers vs. "more integral" top units and I wonder--esp in view of the discussion about how high the LF units were crossed vs. say Middle C or whatever else, blah blah. In short, a common criticism of muddiness, basshorn crossed too high, etc. Instantly upon hearing only the W conducting out the 300Hz horn, what I thought was that it's not just the basshorn delay due to path, but maybe (?) what is partially responsible for the pounding taken on the discussion boards for years is just plain wood conduction mucking in there, too? I don't expect anyone to dummy-up R's on legs of their squawk & tweet, but I also figured some such maniacs as frequent this place might've already covered this turf. I guess it's the same as anything--choose your method of dealing with panel excitation. For me, that amounts to tiny unsupported spans toward the goal of making the sub-span tough to excite by whatever passband happens in that local space. Well, it's not like this thing is concerned with precision wave-formation but still I wonder what the best method might be to stiffen that thing above it's passband. "Do the usual" except as exoskeletal-as-practicable? Experiences, opinions, rants, hypotheses, bald conjecture, and just plain blow-holery welcomed with gratitude. Thanks for the time. PS Is there a better/more-approp. spot for EV stuff? PPS Not a complete poseur--'81 Cornies are cooking Cannonball Adderley while all these electrons were being dispatched and my feet seem to be tapping

Fair guess but no idea. My hunch was it was more about loading the compliance to keep from finding xmech but I really have no idea.

datasheet page 2: "The precise size of this cavity is dependent on the design application. For further information see bulletin No. 210 on the construction of the Georgian enclosure." Courtesy of someone here, I've seen the original Georgian DIY manual but that seems not to be it. Anyone know of the bulletin 210?

Really hurt my face on that one. Good for you. They say the first step is knowing you have a problem. Lemme guess, the big box under the equipment is some kind of tapped horn to catch the low-bass? For the record, the CW here have BEC tweeters and his B-upgrades so I've never actually heard the Real Thing but I quite like what's coming out of them. And sure, I have issues with each driver and MR clarity in general, but it still all mostly works somehow. See, the funny thing was that this was going to be my first commercial/zero-diy speaker in maybe 30 or so; it seemed to be something already-solved and something to 'just use'. Innocent enough origin--kind of keep this sound around and yet make a way to get these CW back to their prev. owner. The project would have this family voicing by virtue of being, well, what it is. It would all be "set and forget" so I can get back to wanking with the 8 other projects in various stages of disrepair. Funny stuff. Believe me when I say it surprises me a great deal to just want to ape something 'known good' just to learn about the voicing of it. From what I'm extrapolating, a pair of woofers maybe has me in the hunt at a gen-u-ine CornesyHerwall (I'd say clone, but ???). Well, that and a great quantity of expensive plywood Thanks for the warm welcome. I love this place. Continued madness to you (and to all of us).

Gee, thanks a lot You are a bad, bad man, Mr. Anderson.

Great, thanks for that--appreciate the time and generosity. This place is pretty-much great (and I can't _believe_ how many people have it sooo bad Seems the experiment is mine to make. Found CW plans, simmed the LF stuff a little, and got temporarily sidetracked to scope-out some La Scalas for sale hereabouts I have been reading so many threads on this board that I'm bleery just trying to catch-up and make sure I asked the right questions. It's funny being a newb, but I am indeed a Klipsch newb. I can't really say why except to say I just haven't gotten here until now, what with one thing and another, but it's true. Meant to get some some year, but some decades passed-by and well it's funny (odd) to me that it didn't happen until now. To be honest, I guess I believed a lot of things I'd read on the web where of course Everything is True . It's just funny laughing at the egg on my own face in a very tight circular joke. Like those amp-people that wouldn't even try <insert topology here> because the Knew it couldn't work and ergo wasn't worth trying. Guilty as charged for me and phenolic diaphragms in the last quarter of the 20th century onwards. I'm not raving about them, and I'm convinced that's the weaker part of the deal, but here I am...listening to jazz on them for hours and hours and shaking my head. Well, I don't even have to know why, I just want to make something that does that I guess that's the underpinning of this entire inquiry. Didn't mean for it to be an ode to CW, just wanted to expand some for the assembled collective. And right now, I'd listen to orange peel diaphragms if they were part of this deal. Sure there are warts as there must be--but what there is works together complementarily in a way which I'd not experienced until now. Didn't mean to ramble but it sure happened. I'll likely be back with more Q's, but for right now I'm trying to catch-up on xo's and dot the i's and all that. Seems the experiment is mine to make and there's a lot of work to do. I'd take any opinions about preferences for avail woofers, 9-ply vs. lumbercore, grille types, etc., ... , < everything else I'm too uninformed to even know to ask > I'm humbled by all the knowledge and experience here. The enthusiasm and passion is contagious.

Thanks very much for the replies, sounds like a great idea. I didn't know about T400's at all and have to read more. I maybe messed-up by not very clearly saying I'd need to get woofers -- the H2 units are gone so that's what got me thinking more toward the larger units (well that and known CW bass in my house). Whatever the case, I'd have to buy woofers. Would that change you opinions? Thanks again.

Heya. Guy who sold me Cornies wants 'em back and I feel bad (good guy--and well these aren't leaving soon so now I have a Problem Got a line on some Heresy II guts (k53k, k76k, xo) but never heard any. Preponderance would seem to say bass is maybe not CW-like in those sooooo... Is it worth the energy to cobble a CW-ey box w/ woof & then adding H2 xo, MR, & HF? Oh--low-watt life here and small space (using CW's as giant monitors, basically). Thanks!

Good stuff, thanks for sharing all of that. Hunting industrial felt suppliers... Continued success Moray!