Jbl 2385 a brochure

Page 1

PROFESSIONAL SERIES

2385A

FEATURES:

Uniform horizontal on and off axis frequency
response

Precise horizontal and vertical pattern control
Full horn loading to 500 Hz

Flat front and compact size

Lightweight construction

49 mm (2 in) throat entry

FLAT-FRONT
BI-RADIAL HORN

The JBL 2385A BiiRadialTM horn is designed
for flush cabinet mounting or compact cluster appli7
cations. The 2385A has a nominal 60° horizontal
x 40° vertical pattern. The horn provides uniform
on and off axis frequency response from 500 Hz to
beyond 16 kHz in the horizontal plane and 2 kHz
to 16 kHz in the vertical plane with constant direci
tiVity above 2 kHz. The horni small Vertical mouth
dimension (just slightly larger than the compres7
sion driver used to drive the horn) allows very
compact single and multiple horn/driver systems
to he put together Should Vertical pattern control
he required below 2 kHz, two or more horns may
be stacked vertically to restore full BiiRadialTM
performance.

Page 2

The exceptionally consistent horizontal disperr
sion eliminates the midrange narrowing and high
frequency beaming problems typically associated
with conventional horn designs. Additionally, the
highly predictable performance of the 2385A
greatly simplifies cluster design. The need for
horn overlapping is minimized and lobing and
comb filter effects are virtually eliminated.

Computerraided design techniques were used
to derive the horn contours in the horizontal and
vertical planes. Utilizing sidewall contours based
on a polynomial power series formula, the horn
design yields smooth response, low distortion, and

SPECIFICATIONS:

even coverage. This design avoids the perforr
mance disadvantage of horns that feature sharp
The BirRadialTM
compound flare configuration provides constant
coverage over defined, solid angles. To ensure light
weight, superior strength, and freedom from resonr

flare transitions and flat sidewalls.

ances, the horn bell is constructed of molded
structural foam.

The 2385A will accept the 49 mm (2 in) diameter
throat 2446, 2450, or 2485 compression driver. With
the addition of the 2327 adapter, the horn will
also accept the 25 mm (1 in) throat 2426 driver.

vs raienr No 4,303,932 Foreign patents pending

Himw:

Medium

Horizontal Coverage:

Angie Degrees (r) 11.3):

70 (+20, 45)

Average Range:

500 Hz 716 kHz

Vertical Coverage:

Angie Degrees (4, dB): 40 (+ 11, 711)
Average Range: 2 kHz 716 kHz
Directivily Factor (Q): 19.066177)

Directivity Index (Di):

12.3 11B(+2.0,e2.0)

Average Range:

lkIlz 716 kHz

Usable aneFrerlueney Limir:

400 Hz

Minimum R 'cummcnded
Cm over Frequency:

Axm] Pressure Senudviqi

445 [11.5]

i-o-m [15.75] -I
i

500 Hz

Construction: Mnhled sinictu 1 foam (nominal 10 mm [038 in]
wa thickne )

Overall Dimensions:

Mouth Heighr: 279 mm [11 in]

Mouth Width: 445 mm [17.5 in]

Length. 236 mm [9.28 in]

Mourning Dimensions.

Rear Height: 235 mm [9.25 in]

Rear Width: 400 mm [1575 in]

Barrie Cutout Required: [From mounting only]
Heighr: 233 mm [Win]
Width: 403 mm [15in]

114dBSPL.1W@1m

279 [11.0] -
r-ass [9251-7
41

I L

12.1 [0.501

238 [928!

m .

»| 31 m

7.1 (0.25) DIA 4 FL.
on 10116 (.100) DIA
CIRCLE

-- 7.9

., co:

0

129 [5.nsl TYF

__°_

I
d 5_ _o_
-l 122 [11.51] L175 {1.001']
TVP TYP

Net Weight:
Shipping Weight.

2.2 kg [6 lb]
4.6 kg [10 1h]

Measured on axis in ihe far arid wnh 1 war: Inplll (4 D voirs RM5. 16 ohms) and
rerereneed lo 1 merer disianee using ihe inverse square iaw Lisied sound
pressure: (SPL re 20 an) represent an average from 1 kHz In A 1er uling rhe 2m,
2450 or 24115 driver

Beamwi'dtl-i vs Frequency

3m
m

m

B

w

m

m

so

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in

2!]

io '

a. n m m u w mu m rm m

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Directivity vs Frequency

a as m m «an m is» m
memeinr