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Old 26th September 2012, 03:36 PM   #3851
tinitus is offline tinitus  Europe
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Originally Posted by weltersys View Post
Define "slot".

Art
just a wide slim opening/mouth
maybe like 100x800mm wide (random figure)

hey, thats quite a large number you have built there
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Old 27th September 2012, 06:41 AM   #3852
tinitus is offline tinitus  Europe
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ok, another 'have you tried..?

how about the special Bailey TL construction style with straight triangular lines ?
would probably look more like a BIB-Bailey-hybrid
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Old 27th September 2012, 07:00 AM   #3853
NEO Dan is offline NEO Dan  United States
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These are basically opposites in that a horn has a positive expansion. And no I've not built the KEF style TL cabinet. How much bass are you looking for?
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Old 27th September 2012, 07:05 AM   #3854
tinitus is offline tinitus  Europe
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How much bass are you looking for?
not much
just deep, clean and good effciency
ehh, maybe that is a bit much
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Old 27th September 2012, 07:07 AM   #3855
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Originally Posted by tinitus View Post
not much
just deep, clean and good effciency
ehh, maybe that is a bit much
Which mostly results in big volumes
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Old 27th September 2012, 07:11 AM   #3856
tinitus is offline tinitus  Europe
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yeah
good I only need one then
flat and wide, placed against the backwall between the main speakers
might be two smaller woofers, face to face, in the middle, and ported at both sides
or just a wide opening/mouth at the bottom/floor
maybe it doesnt need any 'mouth', just loading down towards the floor
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Old 1st October 2012, 09:24 PM   #3857
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Click the image to open in full size.
Finally got something done!
As you can see I went for an interesting fold to get it to fit under my bed It might have not been the best idea, but what's done is done and I've learned a lot.
I went with 12mm BB for the build so the wood cost quite a lot but I'm overall happy with how it works. It seems to have a horrible null at 45hz but I think I overstuffed the rear of the horn. I don't have any stuffing in the "front" part. I'll play around with that and try to find a good spot for it in the room.
Listening impressions: sounds different from a ported box, no direct radiator and transients do seem faster than ported boxes I've heard. Corner loading sounds terribly boomy
Oh yeah, I haven't finally sealed it up yet, just screwed together tight.
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Old 2nd October 2012, 02:25 PM   #3858
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Can you post your HR inputs?
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Old 2nd October 2012, 04:31 PM   #3859
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Quote:
Originally Posted by tinitus View Post
just a wide slim opening/mouth
maybe like 100x800mm wide (random figure)

hey, thats quite a large number you have built there
TH designs can be made "flatter" with a wider mouth. As long as the horn path length, internal volume and expansion ratio remain the same, any form factor (within reason, a 100/1 aspect ratio would probably not work well) may be employed.

The Keystone prototype pictures you refer to as a "large number" all had slightly different response curves, when going with a "wide slim" cabinet, the exit shape can make a difference and was worth the experimentation.

Unfortunately, Hornresp assumes a round exit, so the experimentation has to be an assemble and measure/listen approach.

Art Welter

Last edited by weltersys; 2nd October 2012 at 04:33 PM.
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Old 2nd October 2012, 08:15 PM   #3860
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Originally Posted by BP1Fanatic View Post
Can you post your HR inputs?
Just a few pages back, bjorno's version. Collaborative Tapped horn project

definately not getting into the low 20's with this much stuffing (or leakage)
musically I'm really happy, it sounds good and my mains can't keep up

I see your design has something in common with mine, car audio driver in a tqwt
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