
component system
165mm (6-1/2") two-way 
three-way speaker
152mm x 230mm (6" x 9") 
three-way speaker
165mm (6-1/2") 
93dB 93dB 94dB 92dB
4 ohms 4 ohms 4 ohms 4 ohms
50Hz – 20kHz 50Hz – 20kHz 40Hz – 20kHz 50Hz – 20kHz
220W 260W 300W 260W
55W 65W 75W 65W
two-way speaker
165mm (6-1/2") 
GT6-S266 GT6-S366 GT6-S699 GT6-S266C
Sensitivity (2.83V/m)
Nominal impedance
Frequency response
Peak power handling
(166mm) 
6-1/2" 
Continuous power handling
Type
SPeCiFiCATiONS
(59mm)
(66mm)
2-5/16" 
2-19/32" 
(143mm)
5-5/8" 
(14mm) 
17/32" 
(46mm)
1-13/16" 
(18.5mm)
23/32" 
(67mm) 
2-5/8" 
(166mm) 
6-1/2" 
(59mm) 
2-5/16" 
(143mm)
5-5/8" 
English
0.87 0.86 0.66 0.91
5.51 5.54 5.60 4.94
1.03 1.01 0.75 1.12
Qts
Qms
Qes
Fs (Hz) 80.20 78.78 57.00 71.18
Vas (1) 10.33 10.46 27.78 12.80
GT6-S266C
(165mm) 
6-1/2" 
(235mm)
9-1/4" 
(150mm) 
5-29/32" 
GT6-S366
(166mm) 
6-1/2" 
Cms (um/N) 359 364 399 445
Sd (cm
) 143.14 143.14 222.66 143.14
2
Mms (g) 10.97 11.22 19.54 11.24
DCR (ohms) 3.09 3.13 3.09 3.09
BL (T.m) 4.07 4.15 5.38 3.73
GT6-S266 GT6-S366 GT6-S699 GT6-S266C
(85mm) 
3-11/32" 
(75mm) 
2-31/32" 
ThieLe-SMALL PArAMeTerS
(221mm) 
8-23/32" 
GT6-S699
(67mm) 
2-5/8" 
(59mm) 
2-5/16" 
(143mm)
5-5/8" 
GT6-S266
JBL® GT6-S SerieS
car audio speaker
HARMAN Consumer, Inc. 
8500 Balboa Boulevard, Northridge, CA 91329 USA
© 2010 HARMAN International Industries, Incorporated. All rights reserved. 
JBL is a trademark of HARMAN International Industries, Incorporated, 
registered in the United States and/or other countries. 
Features, specifications and appearance are subject to change without notice.  www.jbl.com
iNSTALLATiON MANUAL

English
GT6-S266, GT6-S366, GT6-S699
2x
2x
8x
8x
2x
2x
2x
GT6-S266C WOOFer
4x
4x
8x
2x
8x
2x
2x
2x
2x
2x
2x
2x
2x
GT6-S266C TWeeTer GT6-S266, GT6-S366, GT6-S699
3
5
1
2
2
1
3
4
2
1
4
3
GT6-S266C
Yellow
Red
Black
www.jbl.com