Nope. Two of them are on the Monolith and Show bass/midbass horns. Also run a search on AA HiEff and look for posts of his in the archives. Lots of nuggets there.rick57 said:
Look for Tom D's posts on AA too. He's a big fan of the Leach's work.
Tried downloading and reinstalling it again? I've never had any problems on 98,98SE,2000 or XP.
Hi brett
Started (between interruptions) to read the Edgar article on the Show bass horn – it’s much more practical than the older ‘classic’ articles – thanks for the push that way.
And searching on AA HiEff a lot - great resource!
Tom D ~ numero uno?
Yes I've downloaded and reinstalled again, now emailed David
Cheers
Started (between interruptions) to read the Edgar article on the Show bass horn – it’s much more practical than the older ‘classic’ articles – thanks for the push that way.
And searching on AA HiEff a lot - great resource!
Tom D ~ numero uno?
Yes I've downloaded and reinstalled again, now emailed David
Cheers
This has happened to several people recently who use Xp
Go to windows/repair
find the file in question
COPY AND PASTE into windows/system32
Next time you restart youl have to do it again since Xp seems to enjoy deleting it,currently Im pasting it everyday,should make a batch file to automatically copy it 🙂
HORNRESP is the best,its free,you only need to understand its limitations of the high frequencies and also the general horn guidelines.
rick57 said:
Yes apart
Apart from one or two of his statements regarding
a) horns having 'perfect phase' and
b) RMS power to be inputted into horn driver is 2 x normal[due to horn providing about half of the load] -
see his latest work the 'bdeap',in bass shoot outs on PSW people say the LF is just chest crushing😀
Re: Re: Best bass horn 50 – 500 Hz
Hello - I'm still using the Karlson Klam style projectors for bass. For a real world sized enclosure I have found nothing better (including horns/BIG open baffle bass. Currently mine are loaded with some 15" Baldwin Model 10 organ field coil bass drivers reconed with Altec cloth doped surrounds and a different spider. The Klam is sealed, where the original design calls for a reflex back chamber. I can adjust the Q on the fly. These really "cook!' 🙂
I have some extra Altec 921's that also worked very well in the Klams if you are interested in building a pair.
ScottG said:
Hello - I'm still using the Karlson Klam style projectors for bass. For a real world sized enclosure I have found nothing better (including horns/BIG open baffle bass. Currently mine are loaded with some 15" Baldwin Model 10 organ field coil bass drivers reconed with Altec cloth doped surrounds and a different spider. The Klam is sealed, where the original design calls for a reflex back chamber. I can adjust the Q on the fly. These really "cook!' 🙂
I have some extra Altec 921's that also worked very well in the Klams if you are interested in building a pair.
Magnetar, can you describe or better still show a picture too, of how Klam style projectors work, what FR they cover?
Thanks
Thanks
rick57 said:
An old picture of the Klams with PHL 15's, 10's, and Heils
An externally hosted image should be here but it was not working when we last tested it.
They are a double chamber wide range band pass box with a wide range front 'slot' or projector. The front chamber gives a measured on axis acoustical gain of around 4db over a single box in the 50-300 cycle range and also broadens the dispersion above that. The midbass is excellent and very punchy and realistic. With a good recording they are quite enjoyable and often can trick me into sensing the true presence of the instruments/musicians in the room. I have tried many different horns (Edgar, DIY, Altec, Peavey, Klipsch, Jensen, ect..) and although they can sound great none of them do it for me like the Klams.
Some people use full range coincident drivers in them without additional mids or treble drivers. I really like the bass from them - they pretty much eliminate the need for a wide baffle.
Here is some old article about the concept:
More Karlson Stuff :
)
upper limit of a Klam?
Magnetar
What does the double chamber refer to?
And how high can they go compared to a horn or a bass reflex?
I have just got a pair of JBL 2202s, that I’d like to run 120 – 1200 Hz.
I’m pretty sure they’d do it in a BR, not so sure in a horn (Fhm is 590 Hz), what about in a Karlson Klam?
Richard
Magnetar
What does the double chamber refer to?
And how high can they go compared to a horn or a bass reflex?
I have just got a pair of JBL 2202s, that I’d like to run 120 – 1200 Hz.
I’m pretty sure they’d do it in a BR, not so sure in a horn (Fhm is 590 Hz), what about in a Karlson Klam?
Richard
One more suggestion. I have several pair of JBL 4560 clones, with the rear chamber modified for Altec 416-8B's and TAD 1601A's. These are very flat to 50 Hz, some ripple around 250 Hz, then clean up to 800 Hz.
Attaching in room RTA scan, taken at 3m, in a too small room. Much of the garbage is room acoustics.... but at least it gives an idea of what is possible with this system
Attaching in room RTA scan, taken at 3m, in a too small room. Much of the garbage is room acoustics.... but at least it gives an idea of what is possible with this system
Greets!
If the FR plot shown here is accurate WRT usable HF extension, then 120-1200Hz is doable assuming you use a phase plug and don't expect much power handling capability since the CR will be pretty high for a point source driver: http://www.lansingheritage.org/images/jbl/specs/pro-comp/2202/page2.jpg
If designed to just load up to the mass corner, then you may not need the phase plug and it will handle more power, but then efficiency is limited to ~100 dB/W/m.
GM
If the FR plot shown here is accurate WRT usable HF extension, then 120-1200Hz is doable assuming you use a phase plug and don't expect much power handling capability since the CR will be pretty high for a point source driver: http://www.lansingheritage.org/images/jbl/specs/pro-comp/2202/page2.jpg
If designed to just load up to the mass corner, then you may not need the phase plug and it will handle more power, but then efficiency is limited to ~100 dB/W/m.
GM
cyclotronguy
You mentioned JBL clones, Altecs and TADs - what FR does each component cover, and what are the horn dimensions/ profile/ mouth/ rear chamber?
GM
What do mean by ‘just load up to the mass corner’ - have the XO at that point?
Thanks guys!
You mentioned JBL clones, Altecs and TADs - what FR does each component cover, and what are the horn dimensions/ profile/ mouth/ rear chamber?
GM
What do mean by ‘just load up to the mass corner’ - have the XO at that point?
Thanks guys!
Greets!
No, use a horn that only boosts the rolled off portion of the driver's BW and the rest is as a direct radiator up to where its inductive roll off occurs. If that FR plot is reasonably accurate you could in theory XO up as high as 3+ kHz, though from a SQ POV, I imagine 1.5-1.7 kHz is the limit.
GM
No, use a horn that only boosts the rolled off portion of the driver's BW and the rest is as a direct radiator up to where its inductive roll off occurs. If that FR plot is reasonably accurate you could in theory XO up as high as 3+ kHz, though from a SQ POV, I imagine 1.5-1.7 kHz is the limit.
GM
I agree 1.5 kHz is about the limit.
The FR is only rolling off down at about 140 Hz, and I was only going to run it down to 100-150 Hz, handing over to another driver, so perhaps I’ll just run a sealed/ BR say 140 –1400 Hz.
Cheers
The FR is only rolling off down at about 140 Hz, and I was only going to run it down to 100-150 Hz, handing over to another driver, so perhaps I’ll just run a sealed/ BR say 140 –1400 Hz.
Cheers
Magnetar
Sounding quite tempting.
What more can you say about the dispersion pattern in the upper range – wider/ higher both?
Do you know how the Klam shape affects the dispersion pattern??
Sounding quite tempting.
What more can you say about the dispersion pattern in the upper range – wider/ higher both?
Do you know how the Klam shape affects the dispersion pattern??
- Status
- Not open for further replies.