jazzmessengers

I like horns that are neutral. From everything I've read this is the K-402, and if past experiences are any indication well designed controlled controlled/constant directivity horns have little to no sound of their own.

I've heard the SH50 and they were speakers I was considering at one point. Very dynamic speakers, but I couldn't shake the feeling that I was aware that I was listening to horns. I'm not good at describing it since it wasn't like the coloration you hear from those audiophile horn speakers with round horns stacked on top of each that beam at their upper passbands. I haven't heard any of John Inlow's designs either, but would love to.

I drive, it's 190 miles from me so not too bad. I go along 93 south then head south west. West Hampton is a bit of a detour, but I would not turn down the invitation

Are you a Yale alum by any chance? I did some research at the Yale hospital, they have exceptional facilities.

I enjoy learning about "how we hear" (currently making my way through Floyd Toole's book) that I like to apply to my audio philosophy, so it was an interesting read. The controlled directivity of the K-402 is one reason I was really drawn to them. I will definitely check the RTM forum, thanks for the suggestions.

Uh oh, I am

Thanks very much for the welcomes all. I'm in New Hampshire, and I'm frequently in New Haven CT for lectures.

Hi all, I think this forum just opened up to me after making a certain number of posts. I registered here after falling in love with the sound of horns and the live like sound I heard when I played large symphony music like Bruckner or Mahler and 50s/60s jazz. It's the K-402 in particular that caught my eye and I'd eventually like to hear the Jubilee system. Unfortunately making the Hope meeting this year is out of the question due to work. My screen name is taken from one of the early 50s hard bop jazz groups "The Jazz Messengers" that drummer Art Blakey would go on to use through a few decades with various musicians.

I follow his blog as well. I don't need a volume pot/AVC/TVC these days as I do it digitally. He is on my list of guys if I ever need a bandwidth limited OPT.

I guess I'll offer another contrarian opinion and say I've never heard any folded horn operating into the midrange sound high fidelity or transparent. Just an opinion and based off recordings I've made of acoustic classical and jazz. Even a low efficiency direct radiator (far from my preference) sounds more like what me and my friends heard live than the folded horns. The best of them being the ATC woofer/dome mid combination. Which is why I have been pretty intrigued by seti's midbass horn and the one @Bjorn was working on, but he hasn't updated that thread in a while.

I'm not planning to build any of this stuff myself. I'm currently shopping around for acousticians to work with designing a room from scratch, hopefully trying to keep some of the large wavelength absorbers hidden in false walls, etc. I'm really intrigued by straight midbass horns, all the ones I've heard sounded better to me than tapped horns when operated up high (beyond sub bass). This is referring to acoustic bass and cello only, not home theater or rock. Dropping off at 70 or 80 Hz, what sort of acoustic space are we talking about? I hope the thread starter doesn't mind this tangent. I will create another thread if it's an issue.

Thanks, I'll look for the plans. Another fan of Dave Slagle (had one of his attenuators in an older system) and Jeffrey Jackson here. Never met either of them.

Are you getting horn loading down to 80 Hz or is it acting more like a direct radiator down that low? Do you mind offering more details like the rough dimensions and drivers used? Thanks.

Oh yeah I'm digging deep to find out info on the Jubilee. All the prowess of the Google

jwc, I came across some of these pictures on ItIsHifi blog, I believe this straight horn is yours? If so do you mind saying a bit more about it? I'm interested in various midbass horns with the K-402.

I am planning to do a Welti mid front wall and mid back wall setup that "destructively" eliminates room modes (along with plenty of bass traps from RPG). So this means I need subwoofers with phase controls.

Excellent, that is good to know about the TD-4001. I'll also ask Roy to see if he has any experience with them. I can't recall if they have the same high frequency extension as the TD-4002. They are much more common to find used than the TD-4002 which is why I bought them when I was trying a JMLC horn project.

I did a bit of searching on the Jubilee after reading about them on another DIY forum. I am currently using Audiovero Acourate to generate room correction and digital crossover convolution filters. I see these have very good objective measured performance. A few questions regarding the home 2-way Jubilee I currently don't have the ability to corner load speakers since I have massive bass traps in the corners which make a marked improvement in my low/mid bass room response. What is the rough frequency extension of the speakers if they aren't corner loaded? I am using a Geddes style subwoofer arrangement for smooth in room response. I see many people have upgraded to TAD 4002 drivers. I have TAD 4001 drivers already, would these work in the K-402? They do not have the throat adapter like the TAD 4002. What is the sensitivity of the bass horn alone? I could only find sensitivity of the 3 way Jubilee system. How would a 20 watt push pull tube amp fare on the bass horns? The subwoofers would be crossed with a fairly steep crossover at around 70-80 Hz, so the bass horn amp would not need to deliver a tremendous amount of power in the lowest frequencies. Thank you.