JBL 2152-H Brochure

300 mm (12 in)

Professional Series

Key Features:

44 mm (1.75 in) Pure Titanium

Diaphragm HF Compression Driver Flat-Front Bi-Radial® HF Horn Sensitivity: 102 dB SPL 1 W,

1 m (3.3 ft)

Power Capacity: 150 W IEC Pink

Noise Integral Transformer Mounting

Bracket

The JBL 2152H Coaxial Transducer represents the results of JBL’s intensive research into the performance and applications of compressiondriver coaxial transducers intended for engineered sound applications. TO achieve high acoustical power output capability while maintaining smooth response, wide bandwidth and consistent dispersion in several critical HF octave bands, JBL engineers used advanced CAD techniques to apply low-distortion Bi-Radial® horn architecture to a coaxial system, and then combined the new horn with

JBL’s 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 impedance and further improves highfrequency response.

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

2152H

Coaxial Transducer

Specifications:

SYSTEM:

Frequency Range ( - 10 dB):

Power Ratingl:

Sensitivity2:

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:

Sensitivity3:

HF COMPRESSION DRIVER/HORN:

Nominal Diameter: 44 mm (1.75 in)

Voice Coil Diameter: 44 mm (1.75 in)

Magnet Weight:

Sensitivity

Dispersion Angles: 90° Nominal

GENERAL:

Polarity:

Input Terminations:

Transformer Mounting:

Recommended Enclosure Volume:

System Net Weight:

(1) Rating based on test signal of filtered random noise conforming to the international standard IEC 268-l (pink noise with 12 dB per octave rollof below 40 Hz and above 5000 Hz with a peak-to-average ratio of 6 dB), 2 hours duration.

(2) Averaged from 500 Hz to 2.5 kHz (3) Averaged from 100 Hz to 500 Hz (4) Averaged from 2 kHz to 10 kHz (5) Included by - 6 dB down points, averaged between 1 kHz and 10 kHz

70 Hz - 17 kHz 150 W continuous pink noise 102 dB, 1 W (2.83 V) 1 m (3.3 ft)

1.45 kg (3.2 lb) 101 dB, 1 W (2.83V), 1 m (3.3 ft)

1.39 kg (3.1 lb)

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

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

Female crimp-on and wire nuts supplied Integral mounting plate on LF frame 711(2.3 cu ft)

9.5 kg (21 lb)

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.

THIELE/SMALL PARAMETERS:

Fs: 85 Hz

Re 4.5ohms

Qts: 0.39

Qes: 0.44

Vas: 37 l(1.3 ft3)

S,:

0.053 m2 (82.15 in2)

: 2.5 mm (0.1 in)

max

Vn:

133 cm3 (8 ins)

Le: 0.5 mH

(Half space): 5.1%

Pe (Max): 150 W

MOUNTING INFORMATION:

Overall Diameter: 311 mm (12 ¼ in)

Bolt Circle Diameter:

Baffle Cutout Diameter (rear mount):

Baffle Cutout Diameter (front mount):

JBL continually engages in research related to product improvement. New materials, pro-

duction methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the orignal design specifications unless otherwise stated.

294 mm (11 9/16 in) 280 mm (11 1/6 in) 279 mm (11 in)

Frequency Response, 1 W at 1 m; Impedance

222 mm

(8 ¾ in)

Composite octave polar responses of the 2152H in both horizontal and vertical planes over the range of 500 Hz to 16 kHz (1 meter measurement distance in an anechoic chamber).

JBL Professional

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

H A Harman International Company

SS 2152H CRP 5M 10/96