BEC

Eminence also makes this driver in a 10 and a 12 inch. Bob Crites

Crossover schematic.

Very simple 1st order crossover for 3khz. I just put if on a piece of wood attached to the back.

Inside the box. I used a Selenium D220TI 8 ohm driver screwed into the Beta 8-CX.

OK, if anyone wants to experiment with this little coaxial driver, you can build a box with internal dimensions of 16 1/4 in. wide, 10 in. deep and 9 in. high. The port is 2 inches diameter and 2 1/4 inches deep. I just used two more pieces of 3/4 inch plywood to complete the port.

Dust cap removed so we can see the horn.

This is the front.

I thought I might check out this little coaxial driver. It has a horn in the center hidden by the dust cap. The back of the driver is threaded to accept a 1 inch HF driver. Bob Crites

Congratulations!

You may need some woofers too. I don't think the cast frame will fit in the Cornwall II cabinets. I think the frame diameter is too much to recess into the front.

Flippin mayor shoots out window at City Hall FLIPPIN — Authorities say no one was injured after the mayor of Flippin accidentally shot out a window in the police chief's office at City Hall. A police report obtained by The Baxter Bulletin says the rifle had been seized by Flippin police. In the report, Police Chief Dusty Smith says he was on the telephone in his City Hall office when Mayor J.J. Hudson came in and picked up the gun. The chief says he heard a loud shot and saw a large hole in his window. No one was injured. Hudson told police that he was trying to unload the firearm and that the ammunition had jammed. He told the newspaper that "it's all been taken care of" and declined further comment

Jeff, Sorry to hear of your loss. Prayers for you and your family.

Also, according to the engineer I spoke to at Eminence, passive radiators are built for a certain specific amount of added mass. If you exceed that mass, there is a good chance of just ripping the cone out of the passive radiator during large excursions. 3 ounces is a lot of added mass. I don't know the maximum mass for that passive, but I seriously doubt it is made to take that much added mass.

Yes, I relayed your apology to him and he accepted it. Are you now saying you are retracting the apology and instead want one from him? I don't remember it word for word, I did read it and had a laugh about it. I told him you would be right back at him. Instead, the editing was done. That made him grumpy.

"I criticize your approach to building crossovers. I don't tell them anything different than you already know I'm telling them! We've agreed to disagree on that issue. I believe the original networks contained losses that should be replicated in the rebuilds. Your high pass sections are too hot, always have been." We may have agreed to disagree, but you are still wrong. My best reference is from PWK, but I know you don't like to see him brought up in the Klipsch forum. Also, the fact that I bought lots of Klipsch speakers and ran curves on them to verify they were indeed "balanced" with the new crossovers.

"More recently, Michael jumped on my business Facebook page and said that no one should be building crossovers unless they build 700 a year or some nonsense like that. After the exchange with him, I called you thinking I might get an apology for his rude behavior, but all I got was excuses." And you know from the phone call at the time that Michael thought he was joking around with a friend. He did not know that you had become "grumpy" since he last talked to you. Why did you stop on your comment before mentioning that you then censored his post. Does ALK know that you do that? He has posted on his website that your facebook page is a place he can go to post anything he wants without censorship? You need to tell him that only applies if you like the post.

"Here we go with the "grumpy" thing again. More like ticked off, how's that? It started when you changed your signature designed to insult half the people on the forum but was obviously targeted at me because you changed it right after one of our capacitor exchanges." Hate to burst your bubble on this, you should have asked me. No, that was aimed at another long term forum member. Did not even have anything to do with capacitors at the time I wrote that.

Al, sent it to me to see if that crossover would work for a 2-way Klipschorn. That is the test we were doing...To see if the HF200 driver and Eliptrax horn would work as the HF section in a Khorn. And could the HF200 driver stand high power crossed that low. Pretty successful test. His resistor got hot, but not "too hot' in my opinion and the driver lived through the test.

And one more thing. The reason, for checking the resistor to see how hot it got was because of this statement back during that testing. This is what ALK wrote to me in an email on Feb 4, 2011 after I told him I woud be testing the speaker at about 100 watts input to see if the HF200 driver could stand it. ALK "Be a bit careful if you run sustained high power above the crossover using my AP12 network. That 10 Ohm resistor across the transform might get too hot. It wasn't intended for PA use!"

You're being disingenuous. You were asking me directly, not looking for opinions. After I answered your question you could have got to the point straight off. PWK was a really smart guy who didn't think anyone was competent enough to do anything with his loudspeakers, so what do you think he would think about what you're doing? Dee Edwards runs his system with the squawker on tap 3 and has for years. I've lost count of the number of people I've done that mod for. It's just a simple fact that many think the midrange is too *** hot -- and besides, your solution does absolutely nothing for those who are dumping the stock top sections. I do however agree that it's something that should be checked, but it has very little bearing on whether someone prefers this network over others -- there's more responsible for the sound than .8 additional attenuation (the way I ship them). Dead or broken link Mark. Thanks for the words. OK, Dean, believe whatever you want. You sure have turned into a grumpy old man lately. I have never said anything bad about your products either here or anywhere else on the internet. I don't even criticize your products when a customer asks me why he should buy mine or yours or ALKs, and that happens almost every day. You do criticize my products both here and on other places on the internet and most certainly directly to customers because they have told me that. But, let's get one thing straight. You are selling on the Klipsch forum. You changed your identity to your company name, you post links to your website on every post you make. Both you and Craig have done that. Why do that unless you wanted free advertising on the Klipsch website to help generate sales? And, by the way, your selling here does not bother me at all. I guess that is open now for any members who want to sell here unless you are somehow special. Anyway, on the attenuation by user, (and I have said this to you many times) I would prefer that the speaker remain as PWK would say "an accurate RE-producer". There are other places in the chain that you can tailor the sound to your taste if your taste varies from that you hear from an accurate reproducer. That is why they made tone controls and equalizers.

"I do agree that if one is using a passive network and wants to experiment with different ........ midrange levels the swamping resistor makes that reasonably possible." Mike, that is where I was hoping to take this discussion to get a few opinions on that. We also know PWKs opinion on that. The resistor dissipation thing blew up and turned ugly before I could get there. I tried to get that going by mentioning that some have wanted to do that when the real problem was woofer phase. Other times it is when the Khorns are not sealed good into the corners.

"Bob, honestly, over the years, it seems like every time one of these networks is discussed you feel the need to come in and make some comment related to the resistive element. Your first contribution to this thread was:" Dean, Go back and read your thread. Mike and later Mark brought up the resistor.

Are you referring to your a/4500 network. No, it was a 2-way I put together for the test we were doing.

"Al is curious about the test set up, how and what things were connected together and the signal type(s) used. Having to isolate the network from the test equipment is something he's never had to do." Have to say one more thing though. Well, Al can just go back and look at the dozens of emails back and forth between Al and me during that testing. He has all the traces and all the test equipment setup that was being used. He and I were working together on that test.

I don't need to read all the posts to see the intent.... you have no business posting in this thread at all. I wonder why we can no longer have technical discussions on this forum without somebody getting offended. That used to be the fun part of this forum for me. Now, just does not seem worth it.