JBL 8138

Component

200 mm (8 in) Full-Range, Dual-cone

Frequency Range (-10 dB)

95 Hz – 18 kHz

Coverage (2 kHz)

90° conical

Sensitivity (2.83V@ 1m)

97 dB (1 kHz - 8 kHz)

Driver Power Capacity

40W (160W peak), 2 hrs
25W (100W peak), 100 hrs

70V/100V Transformer Taps

6W, 3W, 1.5W, (0.75W at 70V only)

Termination

Bare Wire

Magnet

10 ounces (283 g)

Safety Agency

Transformer is UL registered per UL1876

Installation

Full assembly consists of 8138 speaker plus MTC-81BB8 backbox and
MTC-81TB8 tile bridge. Four screw holes at industry standard 286 mm 
(11.25 in) mounting circle.

Dimensions
(Diameter x Depth)

327 mm (12.9") diameter baffle x 84 mm (3.3") depth from back of baffle. Overall depth, 99 mm (3.9")

Mounting Points

4 points on 286 mm (11.25 in) diameter mounting circle

Ceiling Cutout Dimension

300 mm (11.75") with tile bridge and backbox.
228 mm (9.0") diameter as stand alone.

Net Weight

1.4 kg (3.0 lb)

Included Accessories

Integral grille, 4 pcs M4 x 40 mm tapping screws

Optional Accessories

MTC-81BB8 backcan
MTC-81TB8 tile bridge