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A Speaker that Kicks Butt in Large Spaces
A Speaker that Kicks Butt in Large Spaces
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Old 5th December 2017, 10:21 PM   #1131
IG81 is offline IG81  Canada
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Quote:
Originally Posted by freddi View Post
that is nice ~19" x 19" mouth area - have you tried to fold it?
An actual build would indeed be folded and help with low-passing midrange content.

With 150L (5.3cu.ft) internal, I'm sure it could be managed under 9cu.ft external.

It would be for home use where conditions migth be somewhat more closer to 1*Pi and the SPL plenty IMO. I know from experience that the TF1020 I used to have overloaded gracefully enough when driven hard, so it could presumably take higher than 8V input.

I don't have need or space for this speaker, but I stashed the sim and data in a folder in case I change my mind.
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Old 5th December 2017, 11:04 PM   #1132
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A Speaker that Kicks Butt in Large Spaces
you would be popular horn loaded !
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Old 6th December 2017, 07:42 PM   #1133
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A Speaker that Kicks Butt in Large Spaces
Default Are Karlson useful for "Kickbin" duty ?

guess it depends upon the sub, user's requirements. If carry say 80 or 100Hz up then the "X15" size (about 4.5 cubic foot external volume) could be pretty good.

mini kickbin Kappa 12A in K12 Size K-box vs 50% larger mini HD15 ("HD12" - lol)
- the little K is overhemed
Click the image to open in full size.

K12 vs LB76 withi good 15 plus M151 in HD15 vs LB76
Click the image to open in full size.

adding another 20L with a full sized 115BK, that cabinet with a 15 looks reasonably competitive with a n HD15. HD15 has an excursion advantage in the 100Hz area
Click the image to open in full size.

It would be good to have a hornresp model of CUBO's "KICK" cabinets
as assume those are really tweaked for that duty

Last edited by freddi; 6th December 2017 at 07:45 PM.
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Old 6th December 2017, 09:28 PM   #1134
IG81 is offline IG81  Canada
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I fleshed out the TF1020 horn a bit more. I reduced length to 152cm instead of 172cm, but the rest is unchanged. Note the below simulation is for 1*Pi space.

Bold: 152cm
Light: 172cm
power_152cm_vs_172cm.PNG

External bulk is 6.25 cubit feet. The exponential flare is accurate enough IMO. I could probably figure it out for a rectangular box, but I like this style of upright bass horn. Not drawn are mouth and internal bracing.

ft1020_midbass_horn.png

Last edited by IG81; 6th December 2017 at 09:31 PM.
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Old 6th December 2017, 09:57 PM   #1135
freddi is offline freddi  United States
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A Speaker that Kicks Butt in Large Spaces
like its looks too - a couple of ~centered braces and it would be good to go. It would fit a corner nicely (and sims nicely too) - where to mount the midhorn ? what midhorn/driver combo might work?

Click the image to open in full size.

Last edited by freddi; 6th December 2017 at 10:22 PM.
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Old 6th December 2017, 10:17 PM   #1136
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Yeah, there just is no convenient flat top on which to set a midrange unit. The almost 40" height makes it a bit high for a horn on top as well. It would be easy to integrate an angled-down K-tube on the inside of the slanted top, but this can only really play down to 1.5kHz, so needs something for 300Hz and up to there.
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Old 6th December 2017, 10:36 PM   #1137
freddi is offline freddi  United States
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A Speaker that Kicks Butt in Large Spaces
using a solid state amp, we might yank up the 400-600Hz region a bit by pulling down Z with the lowpass filter. Hang sort of midhorn (make a "J" midhnorn ?) as you say - a K-tube could mount through the back panel - would it keep up with the horn-loaded TF1020?
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Old 6th December 2017, 10:43 PM   #1138
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It would keep up with a good driver and network. At home levels to boot. I wonder how the TPC tubes did in the pro applications they were used in by LEECH and others.
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Old 6th December 2017, 10:47 PM   #1139
freddi is offline freddi  United States
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A Speaker that Kicks Butt in Large Spaces
ew: TPC = dunno - there's an Eminence SWR 10 at Ebay which might give a bit more top than TF1020, plus rated 3mm Xmax

btw - I think a Klipschorn's midhorn center is in the ballpark of that height -

maybe your horn would be of interest at the Klipsch Technical/modifications forum

I could see it as a three way cornerhorn with mid and tweeter on top with
some sort of separately powered compact subwoofer

sometime - if you don't mind - put some dims on that drawing above - is it fully scaled?

Click the image to open in full size.

Last edited by freddi; 6th December 2017 at 11:14 PM.
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Old 7th December 2017, 10:48 AM   #1140
freddi is offline freddi  United States
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A Speaker that Kicks Butt in Large Spaces
a Klipschorn's basshorn section is ~39.5" tall
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