Chicago Trip Photos
Sick Optic training & WhirlyBall
Box Plot of 25 ft^3 cabinets
X-Over for 8" 3-way (the blimp)
AR 8" cast frame woofer &
1.5" mid, Audax tweeter
5' version of the newest midbass,
can be made into alternate versions,
2 section, either can be conical/exponential
(trying to get flat 90 to 500Hz & minimize size)
data
best/worst case
normal (conical feeding exponential; 1pi vs 2pi)
preliminary drawing

7/22/01 - I have decided to go with a midbass horn with a 4.5" round throat 67" long, 4' wide x 2' tall mouth;  Hypex (Salmon) M factor of 0.6, pretty flat in 2 pi space from 90 to 500 Hz
Excel spreadsheet: .
html   .xls

8/12/01In the interest of keeping my sanity and room to turn
around in my living room, here's yet another midbass.
Drawing...Data...1 pi response...impedance

8/31/01 2 section (70Hz conic/80Hz exponential)  
dwg42 . . . xls proto-3D wireframe here
data ... impedance ... response .
front ... isometric ... 3D ... 3D render ... cutaway ... b .
16.25" x 28" x 48"; just 1/2 the height of the subs

I really like the EVM-10M, Fs/Qts = 382
My house as seen from space
the cartoon insert marks where
a new Costco & Home Depot
were recently constructed
My PA racks
Front end
Amp rack
new
10 space FOH rack
I've invested less than $2500
total for the racks, mixer, effects,
eq, limiters, crossover and 6 amps:
2 x {P2200 + XLS402 + 1001A}
Virtual slotcars (Swedish Parrot)
Dave Dannesberger's TL56D-38
with mid/high stacked on it.
He wanted a dual EVM18B
cabinet tall enough to elevate
his horns above head height.
I found this in
ProSoundFacts#7
I think he's got cabinetry chops!
BoxPlot predicted response
BoxPlot of the blimp, with such a high Qts it would take 7cuft for flat response
ZIP file with 40 design variations 1.3mb
3D cutaway of 28 Hz Basshorn V.6 ... b
28 Hz bass horn v.7
Excel spreadsheet for v.7
data
dimensions
response
impedance
Graphic Layout
"3Prime" midbass to match v.7
October 7th, 2001
.xls
Shh!
Zomax H2017
3D rendering
JBL 2025HPL
3D rendering
Photo of Zomax
some 3D renderings:
mostly 22 to 59kb
dwg48a   dwg48b
dwg48c   dwg48d
dwg48e   dwg48f
all of the same 2-way
design for 2025H/H2017
1 cubic foot, EBS to 80Hz
photos:
img0006   img0007
 
8 9 10 11 12 13 14
Tri-amping at 90 & 1K
w/McLelland
CX-154
w/
55-1880's in TL15's
Excel file for LAB_Horn ...  WORK IN STASIS
Tom Danley boxes: BT7 (183kb) ... SDL4&5 (23kb)
2/21/02 My home computer has died, here is a link to the LAB: subs.live-audio
Due to the big ice storm I was without power or phone from 2/6 to 2/17
thanks to a neighbor I borrowed enough power (via a 75' 14/3 SJT cord)
to run my gas fired furnace so I read a lot under a 20 watt fluorescent lamp
8/7/2002
Michael Zhang's ML Util program
has me rethinking my bass horns
Here is a composite of 2 revisions:
MCM 55-1880 and EVM10M
the bass horn hits xmax at 35Hz/37 volts
& the 10M is loafing at 20 volts (~40 watts)
9.6' throat on the sub, 42.5" midbass
Feb 9th, 2003
Excel midbass file:
Salmon III
it includes phase plug dimensions
drawing53 dwg53a dwg53b
 
dwg53c   dwg53d   dwg53e
11/19/02:
I just bought 8 discontinued MCM 55-2325 10" bass drivers (2.5" VC, 175w RMS, vented 130 oz magnet, 12.5 mm Xmax) Simulations model it in the LAB12 horn as having a similar response but with about a half dB of ripple. Warning: it is cheaply made and would not survive portable use. I am thinking of building some 48" x 46" by 32.5" tall dual woofer driven horns with a 1.5 compression ratio (St=80in^2), Fc=25Hz, T=0.35, 3.45 meters of throat length folded up in it. I'm picturing a rear wall parallel but inset about 4 inches, expands  twice along the side wall before the final mouth flare.


drawing
51b, 51c, 51c2, 51c3
drawing
52a, 52b, 52c
LABhorn photos:  1 ...  2 ...  3 by Ken B. % Kurt S
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MCM 54-285 is
Zomax H2017
5 steps to the blimp:  C1 C2 C3 C4 C5
1