JBL 1500GTi User Manual

mounting depth
5.25" (133.35 mm)
cutout diameter
14.00" (355.60 mm)
outer diameter
15.25" (387.35 mm)
Ohms
100.0
1.0
3.0
10.0
30.0
20 Frequency 50 100 Hz 200 500 1k 2k
C
dB
105
100
95
90
85
80
75
70
65
20 Frequency 50 100 Hz 200 500 1k 2 k
Out-Of-Car
In-Car
12 dB LP @ 75 Hz
C
Xd mM
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
T mSec
10.0
7.5
5.0
2.5
0.0
-2.5
-5.0
-7.5
-10.0
20 Frequency 50 100 Hz 200 500 1k 2 k
Transducer Excursion
Group Delay
SPECIFICATIONS
DIAMETER: 15" (0.59 MM)
S
ENSITIVITY (2.83 V @ 1 M): 94 dB
P
OWER HANDLING: 600 W
RMS
FREQUENCY RESPONSE: 20 ~ 300 HZ
NOMINAL IMPEDANCE:4 OHMS
VOICE-COIL DIAMETER: 4.0" (102.00 MM)
D
IMENSIONS:
THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE:R
EVC
(OHMS) . . . . . . 2.50
V
OICE COIL INDUCTANCE @ 1 KHZ:L
EVC
(MH). . . . . . . . 0.98
D
RIVER RADIATING AREA:S
D
(IN
2
) . . . . . . . 135.34
S
D
(CM
2
). . . . . . . 877.00
M
OTOR FORCE FACTOR:BL (TM) . . . . . . . . 13.49
C
OMPLIANCE VOLUME:V
AS
(FT
3
). . . . . . . . . 8.01
V
AS
(LITERS). . . . . 188.95
S
USPENSION COMPLIANCE:C
MS
(µM/N) . . . . 173.00
M
OVING MASS, AIR LOAD:M
MS
(GRAMS) . . . . 119.52
M
OVING MASS, DIAPHRAGM:M
MD
(GRAMS). . . . 104.59
F
REE-AIR RESONANCE:F
S
(HZ) . . . . . . . . 35.00
M
ECHANICAL Q: Q
MS
. . . . . . . . . . . . 5.80
E
LECTRICAL Q: Q
ES
. . . . . . . . . . . . 0.36
T
OTAL Q: Q
TS
. . . . . . . . . . . . 0.34
M
AGNETIC-GAP HEIGHT:H
AG
(IN) . . . . . . . . . 0.32
H
AG
(MM) . . . . . . . . 8.13
V
OICE-COIL HEIGHT:H
VC
(IN) . . . . . . . . . 0.75
H
VC
(MM) . . . . . . . 19.05
M
AXIMUM EXCURSION:X
MAX
(IN) . . . . . . . . 0.22
X
MAX
(MM). . . . . . . . 5.46
IMPEDANCE CURVE
INFINITE BAFFLE
FREQUENCY RESPONSE @ 2.83 V
INFINITE BAFFLE
EXCURSION/GROUP DELAY @ 150 W
1500GTi 15" Woofer – Technical Data
JBL Technical Data . . . . . 7•53

JBL 1500GTi Specifications

General

Size	15 inches
Power Handling (RMS)	1000 Watts
Power Handling (Peak)	3000 Watts
Impedance	2 Ohms
Sensitivity	90 dB
Voice Coil Diameter	3 inches
Woofer Composition	Polypropylene
Woofer Surround	Rubber
Type	Subwoofer

Summary

Woofer Specifications

Physical and Electrical Specifications

Details key physical dimensions, sensitivity, power handling, and nominal impedance of the woofer.

Impedance Curve

Graphical display of the woofer's impedance as a function of frequency.

Mounting Dimensions

Illustrates critical mounting dimensions such as depth, cutout, and outer diameter.

Thiele-Small Parameters

Motor and Suspension Characteristics

Details motor force factor (BL), suspension compliance (Cms), and moving mass (Mms/Mmd).

Resonance and Mechanical Parameters

Voice Coil and Excursion Limits

Infinite Baffle Performance

Frequency Response (2.83V)

Shows the woofer's frequency response in an infinite baffle for in-car and out-of-car conditions.

Excursion/Group Delay (150W)

Box Volume Recommendations

Sealed Box Volume

Vented Box Volume