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JBL D38 - User Manual

JBL D38
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Technical Manual
D38Decade Series
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
Nominal Impedance 8 ohms
Max Amp Power 175 watts
Frequency Response 50 Hz - 20 kHz (-6dB)
Sensitivity 92 dB (1 watt @ 1 meter)
Crossover Frequency 4.5 kHz/10 kHz
SYSTEM COMPONENTS:
Enclosure D38 (Not for Sale)
Grille 334793-001
Low Frequency 8” (381mm) Paper Cone
Transducer 334624-001
DC Resistance 7.2 ohms ±10%
Mid Frequency 4” (101mm) Paper Cone
Transducer 334657-001
DC Resistance 3.5 ohms ±10%
High Frequency 2” (51mm) Paper Cone
Transducer 334659-001
DC Resistance 3.3 ohms ±10%
Crossover Network 334787-001
AURAL SWEEP TEST SPECIFICATIONS:
System Aural Sweep Test 6.0V Input 50 Hz to 20 kHz
L.F. Aural Sweep Test 5.0V Input 50 Hz to 5 kHz
M.F. Aural Sweep Test 2.0V Input 4 kHz to 10 kHz
H.F. Aural Sweep Test 2.0V Input 9 kHz to 20 kHz
PHYSICAL SPECIFICATIONS:
Enclosure dimensions: 16³⁄₄” x 10³⁄₄” x 12(H x W x D)
425 x 273 x 305 mm
Weight 17 lbs. (7.7kg) Each
WARRANTY:
• Refer to Warranty Statement packed with each product.
Owner’s Manual
334794-001
Warranty Card
331994-001
Survey Card
331384-001
OWNER’S
MANUAL
Outer Carton
334802-001
Foam Corners (8)
59658
Plastic Bag
PACKAGING
9-99
JBL Consumer Products, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
D38 — Decade Series
Crossover Network
334787-001
High Frequency
Transducer
334659-001
Mid frequency
Transducer
334657-001
Low Frequency
Transducer
334624-001
17" GREEN
17" GREEN/BLK
17" WHITE
17" WHITE/BLK
17" YELLOW
17" YELLOW/BLK
L.F.
+IN
–IN
C1
2.4mfd 50V
C2
2.7mfd 50V
L1
.25mh
INPUT
+
M.F.
+
H.F.
+
250
110
205
110
187
110
D38SCHEMATIC
WIRING DIAGRAM
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Summary

Acoustic and Electrical Specifications

Nominal Impedance

Specifies the speaker's electrical resistance under normal operating conditions.

Max Amp Power

Indicates the maximum power handling capacity of the speaker.

Frequency Response

Defines the range of audio frequencies the speaker can reproduce.

Sensitivity

Measures the speaker's efficiency in converting power to sound output.

Crossover Frequency

The frequencies at which the signal is divided among different speaker drivers.

System Components

Low Frequency Transducer

Details of the 8" (381mm) paper cone woofer, including part number and DC resistance.

Mid Frequency Transducer

Details of the 4" (101mm) paper cone midrange driver, including part number and DC resistance.

High Frequency Transducer

Details of the 2" (51mm) paper cone tweeter, including part number and DC resistance.

Crossover Network

Part number for the crossover network used in the system.

Aural Sweep Test Specifications

System Aural Sweep Test

Test specification for the entire speaker system's frequency response.

LF Aural Sweep Test

Test specification for the low-frequency driver's frequency response.

MF Aural Sweep Test

Test specification for the mid-frequency driver's frequency response.

HF Aural Sweep Test

Test specification for the high-frequency driver's frequency response.

Physical Specifications

Enclosure Dimensions

Provides the height, width, and depth of the speaker enclosure in inches and millimeters.

Weight

Specifies the weight of the speaker in pounds and kilograms.

Packaging Contents

Included Manuals and Cards

Lists the Owner's Manual, Warranty Card, and Survey Card included in the packaging.

Packaging Materials

Identifies foam corners, plastic bag, and outer carton used for product packaging.

Wiring Diagram

Speaker Connections

Illustrates the wiring connections for the High, Mid, and Low Frequency transducers.

Input Terminals

Shows the input terminals and their associated wiring to the crossover network.

Exploded View

Component Identification

Diagram showing all speaker components with their part numbers and mounting hardware.

Assembly Hardware

Lists specific screws and retainers used for assembling the speaker components.

Summary

Acoustic and Electrical Specifications

Nominal Impedance

Specifies the speaker's electrical resistance under normal operating conditions.

Max Amp Power

Indicates the maximum power handling capacity of the speaker.

Frequency Response

Defines the range of audio frequencies the speaker can reproduce.

Sensitivity

Measures the speaker's efficiency in converting power to sound output.

Crossover Frequency

The frequencies at which the signal is divided among different speaker drivers.

System Components

Low Frequency Transducer

Details of the 8" (381mm) paper cone woofer, including part number and DC resistance.

Mid Frequency Transducer

Details of the 4" (101mm) paper cone midrange driver, including part number and DC resistance.

High Frequency Transducer

Details of the 2" (51mm) paper cone tweeter, including part number and DC resistance.

Crossover Network

Part number for the crossover network used in the system.

Aural Sweep Test Specifications

System Aural Sweep Test

Test specification for the entire speaker system's frequency response.

LF Aural Sweep Test

Test specification for the low-frequency driver's frequency response.

MF Aural Sweep Test

Test specification for the mid-frequency driver's frequency response.

HF Aural Sweep Test

Test specification for the high-frequency driver's frequency response.

Physical Specifications

Enclosure Dimensions

Provides the height, width, and depth of the speaker enclosure in inches and millimeters.

Weight

Specifies the weight of the speaker in pounds and kilograms.

Packaging Contents

Included Manuals and Cards

Lists the Owner's Manual, Warranty Card, and Survey Card included in the packaging.

Packaging Materials

Identifies foam corners, plastic bag, and outer carton used for product packaging.

Wiring Diagram

Speaker Connections

Illustrates the wiring connections for the High, Mid, and Low Frequency transducers.

Input Terminals

Shows the input terminals and their associated wiring to the crossover network.

Exploded View

Component Identification

Diagram showing all speaker components with their part numbers and mounting hardware.

Assembly Hardware

Lists specific screws and retainers used for assembling the speaker components.

JBL D38 Specifications

General IconGeneral
Frequency Response45 Hz - 20 kHz
Impedance8 Ohms
Woofer8 inch
Tweeter1-inch
Type2-Way Speaker

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