jwgorman

So Chris, per the link you provided, can one infer that the time delays encountered in something like a Heresy or a Cornwall would not be particularly important, according to PWK?

Perhaps this is merely confusion on my part, but I seem to recall that PWK wrote a paper about separating the squawkers and tweeters and they had to be pretty far away from one another before people (who could not see the speakers) noticed. I removed my Crites tweets from the normal mounting position in my Khorns yesterday, sat them on top of the cabinet and pushed them back to where the tweet/squawker drivers lined up. I mounted the tweets up on cigar boxes and covered the Khorn tops with towels to absorb any early reflections. From my listening position I could see the bottom of the tweet. I spun a few familiar albums and I think is was a bit better with a couple of things, like, locating an acoustic guitar...and it did seem like the tonal balance shifted a bit (which is what a lot of people who'd time aligned their Khorns have reported.) I realize with the phase shift of the balancing network, there are still issues with this approach, but it was interesting as a free experiment. Anyway, does anyone else have any recollection of this paper that PWK wrote? I could not find it via searching.

You will love them. Even my tired old ears could instantly tell the difference when installed in my khorns!

Scalas and Cornwalls for my 98 Khorns?....hmmm that's tempting.

SOLD!

I have a pair of K77 tweeters with the the Zbrackets attached that work fine. I've recently upgraded to Bob Crites' tweets and I figured I'd offer these here on the forum. They work just fine. $90 plus shipping to you (I'm in Iowa) Such a deal!

Thanks for posting it! It's great seeing those well preserved beauties!

They are pretty sexy, but, yeah. That's a lot.

That sounds great. Thanks for the offer, I'd love to experiment with them. You're welcome to come over and play with the khorns with the B&C tweets and the luxman sq38u. Thanks for that link. I tried searching that but I was using the wrong criteria. Perhaps I could have titled this thread a bit differently. I didn't mean for it to sound like a WWE throwdown I have experience with the cornwall 1 and 2 models and I have fond recollections of them. For all their faults, I remember them fondly and I have spent many hours with them. Never failed to bring a smile to my face.

Has anyone here ever compared the Crites' type D 2way Cornwall with the Faital Pro 1.4" driver to a Cornwall II/I? When I saw the response plot of the Faital Pro driver and the horn I instantly thought it would make a killer 2 way and then I noticed that Mr Crites had been there/done that! So, conceptually I can see a lot of sonic goodness from that setup!

Luxman SQ38u Those little NAD 3020s always did well with Chorus IIs to my ear too.

Well, glad you're still there. Yeah man, that past couple of weeks I heard about a lot of old timers retiring. I left the Rock 4 years ago. When I was Test Lead on US Navy P3, and PE on Taiwan's P3 CNS/ATM upgrade I was always the oldest guy in reviews! If I'm the adult supervision, I need to go somewhere else I'm working in the Railroad industry now for a company that spun off the Rock in 1998. Still in Cedar. David Guckenberger stopped out to my place a couple of weeks ago and we spun vinyl and CDs and listened to the Khorns. Talked about the days of glory at The Audio Room. Take care and Merry Christmas.

Very interesting Chris.

Hey Denny, Yep, I noticed that. I do not possess the skills to do that You still at the Rock? Joe

Thanks for posting that Robert.

That would be the way to do it Mike. Maybe someone interested in this mod could do a before after? What frequency range do you think that foam effects? If it was effecting the polar response of 1-2K I guess that would make sense. But you are quite correct, a real measurement would be the way to know. So who has the gear to do such an experiment??? I thought it was interesting that Peavey did it. I'm sure they wouldn't just throw foam at a horn for no reason. Whatever frequency range is being controlled via the foam, I think it's a good thing. But yes, it would be cool to have some data. http://www.bhphotovideo.com/c/product/1017036-REG/peavey_00493560_ch_642qt_constant_directivity_horn.html

I don't really have a "normal" volume. If I'm listening later at night, it's fairly quiet. Last night, I spun Neil Young Harvest when my youngest was sleeping, so the volume was down pretty low. It's also depends on what I'm listening to. I can tell you that last Saturday I was spinning some Muddy Waters live and it got pretty dang loud, in that ball park of "I'm old enough to know better but this sounds really good." I like a lot of music, like Frank Sinatra, Tony Bennet, The Who, Led Zeppelin, Neil Young, Joni Mitchell, John Coltrane and The Ramones, so I wouldn't listen to all those artists at the same volume. I use a Luxman SQ38u, which, I suppose puts a limit on how loud I can play music, but I've made the EL34s start to compress before and that's already waaaaay too loud. My listening room is about 16x24. Why do you ask JJK?

Oh and I didn't think I'd be able to see that green through my cane grill cloth. I was wrong. I don't really care, but if you don't want a fashion blunder, you might want to get some dark gray or black foam.

Well, my room is somewhat reverberant. Splashing 400-1.7K around in that room was bad for imaging and tonal balance. I threw down area rugs and put up heavy insulated drapes on the walls to tame it. That made it better but installing foam on the mouth of the horn was a better solution for convenience and it sounded better than trying to absorb it. My memory of how the Khorns sounded in our previous house is what these guys are sounding like now. The imaging and tonal balance were both improved. It was a good $15 experiment!

I trimmed a bit before reinstalling the motorboard.

So one thing I should mention about the 401s: when I first applied the two sided tape it did not adhere. The tape would come off easily and was covered in flakey plastic. I took clear sealing tape and applied it to where I wanted the two sided tape to adhere to and pressed it firmly onto the horn. I'd pull off the tape and it would be solid black with plastic flakes. After that the two sided tape would adhere. Just FYI.

I owned three pair of Maggies. SMGbs, 2.6?, and the 10s....man that's been a while ago. I am the only guy I know that had khorns, then maggies, then belles, then maggies, then Khorns Yes, color me confused. If I could make a pair of 104db/w/m maggies, I'd be rich and happy

In searching the forum, I came across Chris' corner horn imaging primer. When I read the part about the 400/401 losing control of 400-1.7Khz region it made total sense. Long story short, a quick trip to the local fabric shop to get some soft foam and heavy duty two-sided tape and about an hour of work provided a very valuable mod. I have vaulted ceilings that go up to about 10' but I also have wood floors and that mod did wonders for the reflections I was getting off the floor. Thanks for posting that many years ago Chris. The pic of the peavey horn was a big help. So with the foam on the 401's mouth and the CT120 tweets, I'm really digging my khorns again. I cranked up a live Muddy Waters record last night and played it loud. I was front and center in the club. I'd strongly recommend this mod if you have 400/401 horns.

That looks like a cool project. And I'm really liking the CT120 tweets!