Jbl 2152 h brochure

Page 1

UBL

300 mm (12 in)
Coaxial Transducer

Professional Series

Key Features:

>44 mm (1.75 in) Pure Titanium
Diaphragm HF Compression Driver

PFlat-Front Bi-RadiaF HF Horn

FSensitivity: 102 dB SPL 1 W,
1 m (3.3 ft)

DPower Capacity: 150 W [EC Pink
Noise

DIntegral Transformer Mounting
Bracket

The ~IBL 2152H Coaxial Transducer
represents the results of JBL s inten-
sive research into the performance
and applications of compression-
driver coaxial transducers intended
for engineered sound applications. TO
achieve high acoustical power output
capability while maintaining smooth
response, wide bandwidth and con-
sistent dispersion in several critical
HF octave bands, JBL engineers used
advanced CAD techniques to apply
low-distortion Bi-Radialhorn
architecture to a coaxial system, and
then combined the new horn with
JBLs 2416H High-Frequency Com-
pression Driver.

The 2416H incorporates a pure
titanium diaphragm with JBL s
patented diamond surround for
control over secondary resonances,
extended frequency response, and
greatly reduced mechanical fatigue.
A copper shorting ring on the pole
piece controls high-frequency impe-
dance and further improves high-
frequency response.

The low frequency driver combines
a rugged die-cast frame with a spe-
cially designed cone and 76 mm (3 in)
edge-wound aluminum ribbon voice-
coil motor structure. An integral
transformer mounting bracket is pre-
attached to the LF transducer frame
and also allows quick access to the
crossover network.

Specifications:

SYSTEM:

Frequency Range ( - 10 dB):

70 Hz - 17 kHz

Power Rating:

150 \X/ continuous pink noise

Sensitivity ::

102 dB,1W(2.83 v) 1 m (3.3 fl)

Nominal Impedance:

8 ohms

Crossover Frequency:

1.5 kHz

LOW FREQUENCY TRANSDUCER:

Nominal Diameter:

300 mm (12 in)

Voice Coil Diameter:

76 mm (3 in)

Magnet Weight:

1.45 kg (3.2 lb)

Sensitivity 3:

101 dB, 1 w (2.83V), 1 m (3.3 fl)

HF COMPRESSION DRIVER/HORN:

Nominal Diameter:

44 mm (1.75 in)

Voice Coil Diameter:

44 mm (1.75 in)

Magnet Weight:

1.39 kg (3.1 lb)

Sensitivity

110 dB, 1 w (2.83 V), 1 m (3.3 ft)

Dispersion Angles:

90° Nominal

GENERAL:

Polarity:

Positive Voltage to ( + ) terminal on network
input gives forward L.F. cone motion

Input Terminations:

Female crimp-on and wire nuts supplied

Transformer Mounting:

Integral mountin plate on LP frame

Recommended Enclosure Volume:

711(2.3 cu ft)

System Net Weight:

9.5 kg (21 lb)

(1) Rating based on test si ml of filtered random noise conformingkto the international slandard IEC 26871 (pink noise with

12 dB per octave miioi be ow 40 Hz and above 5000 [-12 With 31 pt

(2) Averaged from 500 Hz to 2.5 kHz
3) Averaged from 100 Hz to 500 Hz
(4) Averaged from 2 in: to 10 in:

toaverage ratio of 6 dB), 2 hours duration.

(3) Included by . 6. dB down points, averaged between 1 in; and 10 in;

Page 2

>2152H 300 mm (12 in) Coaxial Transducer

In response to consultant and contractor requests, the
JBL 2152H was designed to perform well in the most
commonly-specified utility metal enclosure and baffle
combinations, despite the generally detrimental acoustical
properties of those enclosures. Custom-build boxes Will
usually result in better performance characteristics than

those published here.

TlHELE/SMALL PARAMETERS:
F; 85 Hz
R 4.50hms
Q : 0.39
Qms: 33
Q : 0.44
V: 37 l(l.3 It?)
Sn; 0.053 m:(82.15 inl)
2.5 mm (0.1 in)
- (8 in)

no (Half space): 5.1%
P(Max): 150 W
MOUNTING INFORMATION:
Overall Diameter: 311 mm (12 Vb in)
Bolt Circle Diameter: 294 mm (11 9/16 in)
Baffle Cutout Diameter (rear mount): 280 mm (11 1/6 in)
Baffle Cutout Diameter (front mount): 27} mm (11 in)
1131. continually engages in tesesteli telnted to product iniptnyenient. New niatetiels, pro
duction methods, and design teilnenients ete introduced into existing ptoduett Without
notice as a mutine expression of that philosophy. For [his teason, any tnttent 1m. product

may diiiet in some tespett from its published description, lint will always equal at exceed
the orignal design specifications unless otherwise stated.

I- 311 mm (12v. in) I
205 mm 219 mm
(5% ln) (6% in]
ZZZ mm
(s v. in)

Frequency Response, 1 W at 1 m; Impedance

«0

«~va

20 5a 1m 2m 5m
rnsauzncv m N:

moo 2m

45

sow

1000020000

Composite octave polar responses of the 21521-1 in both horizontal
and vertical planes over the range of 500 Hz to 16 kHz (1 meter

measurement distance in an anechoic chamber).

zJBL

JBL Professional

8500 Balboa Boulevard, PO. Box 2200
Northridge, California 91329 U.SlA.

H A Harman lntetnetinnel Company

55 215211
CRP 5M
10/95

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