Dave A

You never know what you will run into. Twice I have gone to places that had things of interest and could not spend any more time than the bare minimum there which is unusual. Normally the people I meet are delightful to talk to and I spend time visiting even if I do not buy. These two places however were filthy and flea ridden and just yuck nasty. I can't figure out living that way.

Here is a new one on me. Had a pair of Fortes which would have a slight buzz at times and could not find anything. It turns out that what happened was the screen on the vent had worked loose and was rattling around behind the dust cover. So adding to the list of problems to check for when I get speakers I guess. Take the woofers out and shake them for shake and rattle before rolling with them. It is amazing to me how such small things as this and a screw accidently picked up by a woofer magnet can cause enough buzz at certain frequencies loud enough to be audible and irritating.

He is selling it to get a washer and dryer would be my guess.

Cut the first "Tractix" today and not happy with the finish. This takes longer to cut than the elliptical. I tried to use a bigger end mill but it left a poor finish in the corners. Getting very close though and should have it all dialed in next week and the de120's are on order.

It's legandry though so there is that.

Bob with adapters like this and variance between manufacturing standards there are discrepancies. What I mean is there will be minor diameter differences between tweeter outlets and adapters and horn lenses and perhaps some gaps and does this interfere in general with sound quality in any meaningful way?

Maybe it is their intent once orders drop below a certain point. It seems like the left hand does now know the right hand in this case. I went ahead and ordered eight today and more to come soon since I cant ignore the comments regarding their quality. I have only installed in one to date and the holes were clearly different sized with one requiring some sanding with my little belt sander to fit. Neither were a problem with top clearance.

How bad is the newer one compared to the older one in your experience?

I think it is safe to say the speakers made before cnc routers certainly have variance at least in the tweeter cut out from what I have seen.

Bob the one I got from PE the other day was a 1 3/8 18 thread and fit that tap just fine. Did I get an older one and what is the difference in the threads?

That is good to hear but why do they say discontinued on their web site? Are you the one who cleaned out Parts Express ;D

So have you tried the 110's? The problem I have with grabbing a few pairs of 120's is that I am looking for something that people can reliably buy now and for some time to come to go with the horns I am making. I need something more than a part being phased out. I did not have any trouble at all fitting one inside an LSI. I'm with you on this as I thought the APT 50's sounded very nice compared to the stock K-77 and with the extra capacity just removed the Zeners from the circuit. .

Looking futilely it seems for drivers that will fit the small space the K-77 fits into. I like the APT-50 I have used but read the specs are not "top drawer". The B&C DE120 is being phased out and the DE 110 which is the replacement I available but again I hear complaints that it is not as good as the 120. Past this there are darned few choices and the only other I can find is a Beyma CD1S which no one has veer mentioned. I don't care whether it is threaded or bolt on but anyone have suggestions as long as it functions as a drop in replacement for the K-77? At some point in time I wonder just how acute our ears are to hear subtle differences with these various drivers. Are there real audible differences or is it the spec charts that cause approval or disdain?

Those look like the ones for sale for $6,000 a few weeks ago. Has that same lighter color around the doghouse at the bottom and the grille and the shiny finish. At least the guy has realized his original pricing was caraazy.

Before liberals started taking God out of school and removing shame for bad moral behavior and blaming Christians for all evil kids around here in jr high and up used to bring guns to school and put them in their lockers. They would hunt on the way home and no one cared or worried. What has changed is the empowerment of evil people who have read Sun Tsu's Art Of War and use it against us. They use pedophile jihadi Muslims and socialist millenial dreamers and illegals who want the freebies to help destroy society and the usurpation of Biblical based society to create tyranny with themselves in charge. Sun Tzu says quite clearly that the best victory over your enemy is done by debasing their society. When enough trouble and chaos is created they will ask a strong man in to restore stability and then you end up like Russia or China or Venezuala. No guns first then no freedom of speech and then no freedom. Funny thing is that liberal idiots never read history to find out people like Stalin called them useful idiots and slaughtered them by the hundreds of thousand once their purpose was done. Atlas Shrugged and Orwells 1984 and Robert Conquests The Great Terror should be mandatory reading for everyone.

This turned out to be the best thing I have done for listening quality besides buy the right components and the elimination of this theoretical sweet spot on my two channel system. Now anywhere in my listening area is the sweet spot.

Last two I Cornwalls I sold here in Nashville went for $1,200 and $1,250. Crossovers re-capped and nothing else done except make sure all drivers were OK and cabinets re-oiled. Bought for $900 and $1,000. Last La Scala I sold went for $2,000 but it had been refinished and had re-capped AA crossovers to replace the AL junk and that new Atlas driver. I bought it for $1,000 and had to drive 500+ miles to get it though. Guy drove up here from Fl to get it.

I'm with Emile here. I have a pair of KP-450's and for not much more floor space than Cornwalls you get four times the sound. Well maybe that's exaggeration but of the three Cornwalls I have had all sound boomy big box compared to the effortless output of the 904 type setups. Dittos on the repeat. Home owner stuff just does not come close to the better Pro stuff. Same wattage that makes Fortes sound loud makes these 904's (yes mine is a 450 but the same bass bin and while a different horn one still highly acclaimed) sound huge. Sold a pair yesterday and did not touch a thing except to plug in the 450's and the sound stage doubled with better definition in all ways. Chorus has deep bass and sounds muddy. Cornwalls sound like you are in a box. You never realize this until you have a chance to compare them side by side to something like the 904's.

Hi Justin, Those drivers are way to big for the La Scalas and Heresy etal drop ins. I did make an adapter plate for an ASD1001B to the horn used in the K-75-79K's. I have had it done for some time and it sits there untested. I am going to send it off with the Fastrac replacement to an engineering type Klipsch user and see what he has to say about them also.

The Chinese might start off OK but if you are not there physically in the factory every day to keep them honest they will start cutting corners on you. I know to many manufacturing horror stories about this to think otherwise. There is even a term for it called Quality Fade. The Chinese will steal your intellectual property and make knockoffs in a heart beat and run a third shift you don't know about on your equipment if you don't get in there and constantly be vigilant. No experience with the DE110? Sadly it costs more. You like the DE 120's better stock up. http://www.loudspeakerdatabase.com/BC/DE120

I bought some of those once threaded internally and it was the crudest casting I have seen in a long time. They are still in my box because I took too long before deciding to send them back. At the very least these would have to be re-tapped or re-threaded. You look closely at that part they show and see the quality Chinese craftsmanship perfectly displayed.

Dean got me to thinking about how I should approach this whole matter. I think modular plates is the way to go so the basic horn can be used by a bigger variety. This setup now can be used for the B&C DE110 and DE120 pre-drilled to use either on the same plate or the APT 50 with the screw in. Think this may be the last iteration required to suit all needs. This way for those who tinker a new clamp plate allows you to try other things and reuse the horn. In the case of the driver becoming discontinued throw the clamp plate out and get another type of driver. It seems as the B&C drivers are getting the better reviews and their clamp plate is easier to make. My reason for going the APT route first was cost of drivers were significantly cheaper. I believe this will be the last set of changes needed.

It's on the list. Weren't they going to phase that out and the DE 110 was going to replace it? Seems that I read that somewhere. Working on a kind of Tractix shape.

This is done with a circle at the bottom and an ellipse at the top and straight sides from one to the other. There is not a whole lot of space to do anything with here although I have also done one with a horn closer to the standard K-77 shape. It would be rectangular in shape but be deeper since it would have to accommodate the extra 3/4" for the motor board. The only "science" behind any of what I am doing is that of observation of existing versions that seem to be well received.

I was fiddling today thinking about offering customization on these with text or geometry. Have not made up my mind on this since each new one means a whole new machining program. I might limit it to just a handful. Need to figure out a way to fill the grooves with black paint and not be sloppy for it to look good if anyone has an idea on how to do that.