JBL S38 - User Manual

Technical Manual
S38
(A/B)Studio Series
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Nominal Impedance 8 ohms
• Max Amp Power 175 watts
• Frequency Response 45 Hz - 20 kHz (-3dB)
• Sensitivity 89 dB (1 watt @ 1 meter)
• Crossover Frequency 800 Hz, 3200 Hz
SYSTEM COMPONENTS:
• Enclosure S38 (Not for sale)
• Grille 335145-002
• Low Frequency Transducer 8
”
(133mm) PolyPlas
™
Shielded (335149-001)
DC Resistance 4.4 ohms ±10%
• Mid Frequency Transducer 4” PolyPlas
™
Shielded (335439-001)
DC Resistance 4.3 ohms ±10%
• High Frequency Transducer 1” (25mm) Titanium dome
Shielded (335663-001)
DC Resistance 3.4 ohms ±10%
• Crossover Network 335410-001
AURAL SWEEP TEST SPECIFICATIONS:
• A. System Aural Sweep Test 6.0V Input 40 Hz to 20 kHz
• B. L.F. Aural Sweep Test 6.0V Input 40 Hz to 1 kHz
• C. M.F. Aural Sweep Test 4.0V Input 500 Hz to 4 kHz
• D. H.F. Aural Sweep Test 2.83V Input 3 kHz to 20 kHz
PHYSICAL SPECIFICATIONS:
• Enclosure dimensions: 11¹⁄₂” x 17¹⁄₂” x 12⁷⁄₈” (H x W x D)
292mm x 445mm x 327mm
• Weight 56 lbs. /25.4kg Sold in Pairs
WARRANTY:
• Refer to Warranty Statement packed with each product.
Owner's Manual
335404-001
Warranty Card
331993-001
Survey Card
331384-001
OWNER'S
MANUAL
Upper/Lower
Foam
335406-001
Microfoam
(2pcs.)
Outer Carton
335401-001
PACKAGING
02/00
JBL Consumer Products, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
S38 (A/B) Studio Series
Driver
High Frequency
335663-001
Driver
Mid.Frequency
335439-001
Driver
Low Frequency
335149-001
YELLOW/BLACK
WHITE/BLACK
GREEN/BLACK
WHITE
GREEN
YELLOW
Crossover Network
335410-001
– +
+IN
–IN
INPUT
GREEN
BLK/GREEN
WHT/BLACK
WHITE
YELLOW
YEL/BLK
RED
BLACK
L.F.
M.F.
+
H.F.
250
+
+
205
205
–
110
–
205
–
110
L1
2mH
R1
2.4/10W
C1
60µF
100V
C2
0.01µF
250V
R3
10/5W
R2
4.7/10W
L2
300µH
C3
24µF/100V
C4
0.01µF/250V
C5
4µF/100V
R4
1.2/10W
R5
10/5W
L3
200µH
C6
0.01/250V
S38 SCHEMATIC
WIRING DIAGRAM

Summary

Acoustic and Electrical Specifications

Nominal Impedance

Speaker impedance rating in ohms.

Max Amp Power

Maximum power handling capability in watts.

Frequency Response

Range of audible frequencies reproduced, with tolerance.

Sensitivity

Loudness at 1 meter for 1 watt input.

Crossover Frequency

Frequency points dividing speaker drivers.

Aural Sweep Test Specifications

System Aural Sweep Test

Audio sweep test for overall system performance.

L.F. Aural Sweep Test

Audio sweep test for low-frequency driver.

M.F. Aural Sweep Test

Audio sweep test for mid-frequency driver.

H.F. Aural Sweep Test

Audio sweep test for high-frequency driver.

System Components

Enclosure

The main speaker cabinet structure.

Grille

The protective front cover.

Low Frequency Transducer

The 8-inch PolyPlas woofer.

Mid Frequency Transducer

The 4-inch PolyPlas midrange driver.

High Frequency Transducer

The 1-inch Titanium dome tweeter.

Crossover Network

The circuit that splits audio frequencies.

Physical Specifications

Enclosure Dimensions

Height, width, and depth of the enclosure.

Weight

The total mass of the speaker.

Wiring Diagram

S38 Schematic

Exploded View

Woofer

The low-frequency driver assembly.

Grille

The protective front cover component.

Network

The internal crossover network assembly.

Midrange

The mid-frequency driver assembly.

Tweeter

The high-frequency driver assembly.

Enclosure

The main speaker cabinet.

Port Tube

The bass reflex port component.

Terminal Cup

The rear connection panel.

JBL S38 Specifications

General

Frequency Response	45Hz - 20kHz
Sensitivity	89dB
Impedance	8 Ohms
Power Handling	150 Watts
Recommended Amplifier Power	10 - 150 Watts
Type	Bookshelf speaker
Tweeter	1-inch titanium laminate dome