DOWNLOAD JBL 408 GTi Service Manual ↓ Size: 416.34 KB | Pages: 21 in PDF or view online for FREE

17

Thiele-Small Specifications:

408 GTi

508 GTi

Free Air Resonance (Fs):

125Hz

100Hz

Electrical Damping (Qes):

0.52

0.51

Mechanical Damping (Qms):

5.17

5.14

Total Damping (Qt):

0.47

0.4

Equivalent Volume of Compilance (Vas):

0.0388 cu. ft. (1.10 liters)

0.1059 cu. ft. (3.0 liters)

Effective Cone Area (Sd):

9.3 sq. inches (0.0060 m

2

)

14.26 sq. inches (0.0092 m

2

)

Center to Peak Linear Excursion (Xmax):

0.126 inches (3.2mm)

0.126 inches (3.2mm)

Voice Coil DC Resistance (Re):

3.4 ohms

3.4 ohms

Voice Coil Inductance (Le):

0.22mH @ 1kHz

0.22mH @ 1kHz

Voice Coil Diameter:

2 inches (51mm)

2 inches (51mm)

Voice Coil Length (Winding Length):

0.400 inches (10.2mm)

0.400 inches (10.2mm)

Air Gap Height:

0.200 inches (5.1mm)

0.200 inches (5.1mm)

BL Product:

6.2 T/M

6.2 T/M

Effective Moving Mass (Mm):

0.28 oz. (8.0 grams)

0.32 oz. (9.0 grams)

Note: The Thiele-Small specifications shown apply only after a break-in period of approximately 2 hours.

JBL continually strives to impove its products. New materials, production methods and other refinements may result in a change from published
specifications and description. The changes will equal or exceed the original specifications, unless otherwise stated.

408/508 MANUAL.QXP  7/17/98 11:21 AM  Page 17

19

408/508 MANUAL.QXP  7/17/98 11:21 AM  Page 18

21

408/508 MANUAL.QXP  7/17/98 11:21 AM  Page 19

23

408/508 MANUAL.QXP  7/17/98 11:21 AM  Page 20