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Klipschorn center channel mod finished


Q-Man

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I finished the speaker and the so called false corner that it sits in. I decided to start a new post about this instead of adding to the old one.

The speaker consist of a Klipschorn bass horn with an Altec 290-16K midrange driver on a Altec 311-90 300Hz horn. The tweeter is the JBL 2404H and all are connected to a custom network. This was done to match my main speakers and I believe that most of you know this already.

The experiment here was to see how the basshorn would sound with a top and bottom added to the horn, and also how it would work lying on it's side in this type of false corner.

I'll post a few pictures, but I can't get a good one of the black lacquer. I'll also add some of my listening results as I go on.

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This angled piece is what I use in all my false corners. This one is cut to the exact size of the back of the bass horn tail board. I don't need a tailboard gasket with this. The bass horn is pushed tight againts it and then I screw the tail board to this angled piece. It stiffens up the tail board even more and holds the bass horn tight in the corner.

post-2405-13819253769912_thumb.jpg

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The first thing that I did was to run the receivers frequency test tones to the center channel and to the main speakers to compare the sound. The receiver has test tones from 35Hz to 250Hz that are used to measure the low end out put of your speakers to help you match them to your sub woofer.

What a disapointment, I didn't need a sound level meter to tell me that the bass output was no where near what I was getting from the mains. So I hooked up the center speaker to one of may main channel out puts and got out my warble test tones and sound level meter. I ran the tones and wrote the level of them down so I could run the tones again on one of my main speakers and compare them. The results were better then I expected. I say this because the center speaker is withen 1 or 2db of the left and right main speakers. The center actually is 2db louder then the mains at 40 and 50Hz. I was hoping that this mod would equal the low end output of the mains and it turned out to even have a little more. This makes me very happy and I didn't expect this from a center speaker that is 5' off the ground. I guess this new design for a upper false corner is doing a great job.

Now if I can only figure out if something is wrong with my receiver. The full range setting in the receiver isn't really full range. I'm wondering if this is done on purpose or if something is wrong with the receiver. I have all the speakers set to large and run the pre-outs to an Outlaw bass manager. The Outlaw bass manager lets me adjust the crossovers to the subwoofer for every speaker at 40,60,80,100,120, and bypass (full range). I have the crossover points set to 40 Hz. for all my speakers. The Outlaw is then fed to the McIntosh power amps.

Today I need to try to find a DVD video that has some low end action and see what I'm gettin out of the center with it. Do any of you know of a movie that puts some good lows in the center channel? I also will try some SACDs and DVD-Audio disc today to see if any of them have some good full range in the center.

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Ah, sweet sawdust and unvarnished objectivity... Q-man you are of the questioning "why not" spirit that made the late PWK a fully horn-LAUDed wizard. With such attention to innovation without losing detail, is it any wonder that you, Q-man, are not only my hero... but the hero of so many would be Klipsch enhancers.

While the artful science of sound is profound enough to require pro considerations in slicing and dicing production models... mainstream marketing requires mainstream engineering... and that doesn't always fit your acoustic needs... or mine... and all the others who have retrofitted the "Joy of Klipsch" to their own ears... and to the higher quality audio that lurks within today's audio media.

There's more to bass fishing than twisting audio knobs... -HornEd

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Thanks for the nice comments.

Horn ED when you get a chance, will you do me a favor? On your RX-V3000 set the center to large and see if you can get any bass out of your KLF-30 center speaker. I'm confused as usual.

Carpenter?15.gif I would say that I'm more like a cabinet maker. There is a big differance in the techniques used to build something between a carpenter and cabinet maker. If you want to insult a cabinet maker, call him or her a carpender. 9.gif I of cource did not take it as an insult for many reasons. I also don't post the stuff that I do for praise or to show off my work. The work that I do for myself stinks. It's done fast and easy, because I can live with flaws. It's the work that I do for other people that looks good. You can't charge someone for your work if it isn't 100%.

I show my stuff here more to give others ideas and open up their minds. There is more then one way to skin a cat. I hate it when I hear someone say that I can't do that. Bull! You may not be able to do it the exact way, but you can come up with another way to accomplish the same thing. I also show what I'm doing or changing to receive feedback and opinions from others. The feedback (good or bad) helps me form new ideas. I wouln't be doing what I do, if I didn't have all of you to learn from.

The Klipschorn can be to many higher levels and uses, lets see how long this one keeps me satisfied.

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On 4/4/2004 1:40:43 PM Q-Man wrote:

Thanks for the nice comments.

Horn ED when you get a chance, will you do me a favor? On your RX-V3000 set the center to large and see if you can get any bass out of your KLF-30 center speaker. I'm confused as usual.

Carpenter?
15.gif
I would say that I'm more like a cabinet maker. There is a big differance in the techniques used to build something between a carpenter and cabinet maker. If you want to insult a cabinet maker, call him or her a carpender.
9.gif
I of cource did not take it as an insult for many reasons. I also don't post the stuff that I do for praise or to show off my work. The work that I do for myself stinks. It's done fast and easy, because I can live with flaws. It's the work that I do for other people that looks good. You can't charge someone for your work if it isn't 100%.

I show my stuff here more to give others ideas and open up their minds. There is more then one way to skin a cat. I hate it when I hear someone say that I can't do that. Bull! You may not be able to do it the exact way, but you can come up with another way to accomplish the same thing. I also show what I'm doing or changing to receive feedback and opinions from others. The feedback (good or bad) helps me form new ideas. I wouln't be doing what I do, if I didn't have all of you to learn from.

The Klipschorn can be to many higher levels and uses, lets see how long this one keeps me satisfied.

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I didn't get into that deep for woodworking specialist...... you can have the greatest title on the list as you are(you name it I'll call you that way 9.gif ). Seriously it's really nice work, not to mention the speakers building mixing inside..... I couldn't even make a board with straight edges and right angles when I was in high school 14.gif

Anyway really great work 9.gif

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On 4/4/2004 9:02:03 AM Q-Man wrote:

Today I need to try to find a DVD video that has some low end action and see what I'm gettin out of the center with it. Do any of you know of a movie that puts some good lows in the center channel? I also will try some SACDs and DVD-Audio disc today to see if any of them have some good full range in the center.

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Q-Man - it's not for long, but check out the Lord of the Rings Fellowship of the Rings. In the very beginning, during the "Death of Sauron" story, the bass is loud and very low when he "dies". Also - if you can get "The Missing" (not a bad movie unto itself) it has two trailers - Hellboy and Spiderman 2, that are socked full of bass. Kick your sub off and see how they sound through your center.

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You asked for a movie or two to test the bass from left to center to right... Two come to mind both Disney...

Finding Nemo...

Treaure Planet...

Both will give you a great workout and give you a feel what you do or do not have.

One of the reasons, (For my own ears) I loved the earlier Vertical on its side Cornwall II's. Also why I say to most people, "Get a very dynamic center that goes low and plays "Crystal Clear" too." There is just too much information (read dialog and music and effects) in the center channel speaker in a HT to skimp here.

Somehow I bet Paul is smiling at you doing this too.

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