Klewless
-
Posts
397 -
Joined
-
Last visited
Content Type
Forums
Events
Gallery
Posts posted by Klewless
-
-
Of all the bass mods for the LaScala that I have seen, this one makes the most sense to me!
I may give it a try. My idea would be to put it under the LaScala because:
1. You would not have to raise it more than 3 to 4 inches,
2. I think the "sealed compression chamber" is better preserved with the passive rather than the port (ala the Jubilee).
3. The new "base" could be made to vent all around, the front, or even the back.
Just my thoughts on the subject.
-
You may not realize it, but you just discovered what separates the men from the boys when it comes to speakers! I'd be willing to bet there was very little distortion within your event.
-
Thanks Q-Man
I have been wanting to try out three of these speakers with a slight mod to the front. Was thinking the last section of the compression chanber should come all the way out to the front and finished like the LaScala or Belle Klipsch.
I would need to locate three high sections, somewhat like ALK's horn or the Altec 511B (do have two of those but no drivers).
I have been really impressed by your speaker building projects.
John
-
What woofer did you use in your University Classic?
Do you think the Klipsch woofer work in that horn? I have a pair of LaScalas and believe I want to transfer their components into the University.
Thanks
-
They will work just fine in your room.
Try moving them different distances from the walls of your room. Also try different toe-in angles. Sometimes repositioning or rotation as little as an inch can make a world of improvement in the imaging.
Good luck!
-
I have had good results using two different methods.
1. Originally I ran my Khorns LARGE with the SUB rolling in at a very low frequency, something around 35 to 40 Hz. Anything higher into the sub tended to destroy the classic sound of the Khorn and made too much bass. This also worked with my LaScalas in the same room (before getting my Khorns).
2. I now have much better bass management with my Denon receiver, so now I run the Khorns as SMALL, crossing into the SUB at 40 or 60 Hz with equally good results.
I found that the problem was not so much the speakers but the room. Plus I have learned that full range mains sometimes does not work out but I still prefer that the mains be capable of the extreme lows.
I have my SUB set the same way as you. Good luck and just keep trying different methods. Another thing I do which seems to work out is to fiddle with the bass settings, and when I think I have it "right", reduce the sub one notch.
-
You can do what you suggested but as you can see several problems pop up in the process.
1. The Cornwall midrange horns cannot go low enough in frequency to blend with the Khorn bass unit. You'd end up with a big gap between them.
2. The existing crossover would not work, so you're in for a big crossover design project.
3. As mentioned by others all these high/mid frequency horns would interfere with each other out in the listening space. When two or more speakers make the same frequencies, they help/hinder each other at various frequencies and at various places throughout the room.
So the short answer to your question becomes one of those "Not Recommended" procedures.
Good try though. Reminded me of the "Sweet Sixteen" system 40 years back.
-
Thanks for your response.
You'd be amazed at how many dealers I have ask that set of questions and none of them had a good answer; most didn't have anything to say.
The main reason for the questions rests in my efforts to delay the sub to account for the Khorn bass unit.
-
When the HT decoders adjust speaker delay using the distances input, what becomes the reference point?
The main L/R ?
The one fartherest back ?
Is there some kind of "specification" on this issue ?
I am wondering what happens when the Sub is up front and behind the mains.
Any help would be appreciated. I tried to google this data but apparently don't know just what to search for.
Thanks
-
If they were mine, I'd just have them re-coned. Not terribly expensive. You might even be able to get black cones to match the horns.
-
Just remind those turkeys that most ALL speakers can make bass notes. And at a very low frequency at that.
The problem is that very FEW of them can make their bass notes loud enough for you to hear them out into the room!
The Khorn is one of the few that can.
As an aside, remember that even subs are essentially one-note bass. It happens to be the one that the ROOM decides which frequency you get to hear.
I too have found out that I seem to know more than most dealers and unfortunately that is one of the issues which is driving the young away from true hi-fi.
I encountered a young man one day who was at a total loss as to the meaning of "high end" sound or even where to hear it for the first time. Same sad situation for classical music in my area. Young people are turned off by the stuff they play on the air.
Thanks for listening to my ranting.
-
Yes, I have a pair. The only difference I could see was that the walls were not mitered, etc to look good. One was expected to do all that kind of stuff himself.
I first put a top on it and a base for the bottom.
Now I have redone them differently and veneered them all around so they can be use vertically or horizontally.
-
If it is a true series type xover where the inductor shunts lows around the tweeter, then there exists a failure mode to get excited about. Should the inductor open, the tweeter would then face first hand all the bass currents for about a millisecond before it bites the dust.
I once had a book that gave the conversion rules to convert between series and parallel networks. Should actually still have that book someplace around here.
-
The test method I would recommend is
1. Put the amp into MONO
2. Put the speakers side by side, in the center of the room away from walls, etc
3. Use the BALANCE control to switch speakers while listening
4. It would be nice if someone else could do the switching for you while you are in the sweet spot
5. Listen to several favorite recordings in full
Good luck!
If yours are the ones with the mid/tweeter off to one side, put them next to each other
-
I have my eyes on the Outlaw Audio pre and/or their ICBM Bass Management (would not need both at the same time since the pre has some bass management internally).
Would love to audition one before commiting to purchase. Have read good things about it.
-
Here's my take on this.
Any high quality amp will do fine. To me it does not matter whether it is SS or Tube. I have owned many of both, more than I'd like to admit.
I currently use a middle of the road Marantz HT Receiver. It sounds good to me regardless of what I am playing. It also has a two channel mode which I never use. I use a three speaker system and will NEVER go back to just two channels. Fortunately today's gear allows one to define how many and how big each speaker is present.
To confuse matters more, go to firstwatt.com, a Nelson Pass site. His work is also featured in the AudioXpress mags.
One eventually has to accept the fact that every amp/preamp (and speakers, rooms, etc) has it's own unique sound. Pick the one that suites your own personality.
One last little personal tid-bit. Sound is sound. It does not matter to the speakers, your amp or your room what the source of that sound is, movies or music. I conclude that by the time your ears get a dose, it is sound, only sound, and nothing but sound.
Good luck in your quest, and remember that it only has to please your ears.
-
I use a home theater receiver for deriving a center channel. I tell it there are no rear speakers (which is true), effectively getting a three channel system.
My receiver (Marantz) has a multi-channel stereo mode.
Plus I can use any of the various decoders to get the center channel.
Of course, the receiver has amps for all speakers.
Works like a champ. On good quality mono sources, the left and right speakers are dead quiet!
-
Coytee,
I'd say you have darn good speakers!
-
The differences are cosmetic only. They all sound the same.
-
Trey,
"Listen to our speakers"??????
Are you serious. Why would we want to do a thing like that!
-
garymd,
I'm with you. If I can't feel that cannon in my chest, it just ain't worth playing.
An interesting side note on all this. I take walks in a park about a mile away from Fort Snelling. Once in a while they light off one of their cannons. Even though the sound is not that loud when it gets to me, I still jump (unexpected sound?). The percussion is right, even though not all that loud.
-
Mine is the Rotel. I am perfectly happy with it.
-
dp,
Good choice!
If you like pipe organ music, a really good sub correctly set up will make you think you have Khorns!
I use my sub with Khorns and sometimes I have to look to see if it is turned ON. But ye'ol pipe organ occasionally lets me know. I carefully set it up so as not to interfere with the classic Klipsch sound. The sub's crossover is set very low.
I have a REL sub and have used it with my LaScalas and was very happy with the sound. Most of the time a sub is useless because not too many sources have bass deep enough to need one. I often run my system (Khorn and LaScalas) without any help and they both are awesome!
-
Sometimes I wish I had one of those "BS Buttons" to display as a response.
I once wrote PWK a letter asking about phase reversal from the amp to the speaker and he wrote back suggesting that I make a reversing switch and then "proceed to frustrate yourself".
AC is AC, the electrons don't know if they are coming or going. As far as the Power Line AC to your house goes, I doubt that the utility company has gone to any effort to insure that your particular leg off their dropdown transformers are perfectly balanced and are without any phase lags with the voltage/current.
I do understand improvements if the source happens to have a problem solvable by a simple phase reversal (maybe one percent of the time if you are really in luck). I used to see this when I had equipment with the scope and could determine if one channel AT THE SOURCE was out of phase.
But when it is truely random I could never hear any difference one way or the other. I remember that one radio station was consistently out of phase on one channel, which I could clearly determine from the scope. Couldn't tell which channel but that didn't matter since OUT is OUT.
LS bass Mod - Neil
in Technical/Restorations
Posted
My comment #2 was based on my recollection of Paul Klipsch's writeup on the development of the Cornwall.
I think he said that below the point where the port is operating, the driver becomes unloaded, resulting in pure distortion if the driver is left to limit itself. I also think this is the reason Speakerlab recommended a high pass filter in front of the amp. (I do not know what order of system this becomes.).
So I concluded that the passive, while equivalent to the vented port at it's intended frequency, also helps to limit the driver below that point.
I could be wrong here because it has been many years since I read PWK's paper. But it does seem reasonable especially if one believes the original chamber is a bit small to begin with.