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Klipschorn Flase wall or Enclosure?

pantoramasan

pantoramasan

AK Subscriber
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Anyone have experience with just an enclosure of the back of the Klipschorn for corner reproduced sound? or does that not work well? I have seen some on the net with plywood sealed backs. Any information and advise would be appreciated.
 
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Look for Paul's Dope from Hope letter, Vol 15 number 5. It shows what he did for false corners at his residence. I would be afraid that adding ply wood to your corner horns would be like adding resonators, adding peaks and valleys to the response and creating resonators that would continue to vibrate after the signal had long dissipated.

The more I read posts from this forum the more I think it should be mandatory for every one to read Paul's letters. It would expand your horizons and answer many of your important questions. They are not overly technical in nature and are a wealth of information. Even for non Klipsch owners. After all distortion is distortion, and faithful sound production is what we all strive for.
 
Thanks for that info. I have seen the false wall before. I think I may be needing only one side of one speaker enclosed as I do have a wall for the other side as an enclosure. The second speaker is in the corner. Do you think the straight plywood sheet would still add much resonance? I will get a sheet cut and put it in place just to see what I am getting in sound. If it doesn't work I will make a false one sided wall only and give that a try.
 

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Thank you...I did see that earlier and figured that's where you got the idea. I am like you, "not an expert", and that's why I am looking for answers here hoping that there have been trials and errors I can learn from. I just got some Particle board which is almost the size I need for that one side. I am simply going to tape it to the back to see if there is the slightest of difference. Also the particle board doesn't have that possible resonance it is more sound absorbing. So we'll see what happens.
 
The particle board sure made a difference in sound! Subtle but it's definitely better & noticeable. Without the side enclosed the speakers sounded somewhat hollow, if that's a good description. Does anyone know what material (plywood/particle board etc.) was used by the Klipsch Co. when they created the Klipschorn 60th Year Anniversary speakers?

Now it is time to actually fabricate a piece for exacting fit for sound and aesthetics.
 
I just used 1/2" birch veneer plywood, which is what the tailpiece is made of. Since they were only about 16" wide, which is what a stud dimension is, I thought they would be as solid as 1/2" drywall which is what the wall of the room would be. I've read other posts that people have used 3/4" plywood. Again, I don't notice any problems sound wise. Mine are solid and removable.

I'm assuming, since the speakers are plywood, the 60th Anniversary sides would be also, I can't however say whether they're 1/2" or 3/4".....
 
Looked at your post again. You did a real nice job and the speakers look great. I agree with you...whatever works for your environment/house/space will do. Better than no backing or corners.

I'm listening to mine right now with the fake half particle board and the other one in the corner. They both sound great to my ears now. actually quite balanced. Thanks again for your time and input.
 
I always understood the false corners were recommended to be four feet (on each side). ?? Perhaps that's wrong.
 
That's what I have read as well. But shorter walls and enclosures seem to work just fine. Otherwise why would Klipsch make the 60th Anniversary edition enclosed? I believe the length of the walls was so the bass could reflect off the extended space. I could be wrong, I am far from an expert on this subject. All I know is what I hear...and right now it sounds fantastic with just the particle board taped to the rear side panel. Once it is properly enclosed it should sound even better.
 
Listening to mine now, so much bass, they're vibrating a door to a bathroom a few feet away from the right speaker! Glad it is working for you. Post a picture of your finished project?!
 
Glad to post a photo when its done, but it may take several days. I'm contemplating covering the horn driver as well. When the speaker is properly cornered it is entirely sealed, so to speak. Any thoughts?
 
Yeah, I thought about that too.... Maybe put a piece of 1x2 or 1x1 along the top and bottom of the horn assembly to have something to attach the panels to? I thought you would probably want the panels tucked inside the top and bottom. I'll have to look at yours to see if they are like mine. I did notice you have the riser on the horn assembly that I don't.

I think yours are newer than mine (1979).
 
Mine are 1982's. I read somewhere that you should not obstruct the inside cavity of the horn and driver section. So covering should be all on the outside perimeter strictly.
 
I have seen these as well. In my opinion the difference is that the 60th anniversary editions have entirely "different" or new style crossovers, drivers, wiring, etc., which can handle the tighter enclosure up top. That's my theory, not fact. I will try both methods. since I only have to enclose half, it shouldn't be a big deal.
 
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