
Specifications
Dimensions
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")
Ceiling Cutout Size
300 mm (11.75") with tile bridge and backbox.228 mm (9.0") diameter as stand alone.
Weight
Net Weight
1.4 kg (3.0 lb)
Audio
Coverage Angle
90° conical
Sensitivity
97 dB (2k - 8k Hz)
Transformer Taps
6W, 3W, 1.5W, (0.75W at 70V only)
Power Rating
See transformer taps
Maximum SPL (1m)
105 dB (top 70V/100V tap)
Connectivity
Input Connectors
Bare Wire
Construction
Magnet
10 oz (283 g)
Color
White
Included Items
8138 8-Inch Ceiling Speakers
4x
Integral Grilles
4x
M4 X 40 Mm Tapping Screws
16x
General
Drivers
200 mm (8 in) Full-Range, Dual-cone
Frequency Range (-10dB)
95 Hz – 18 kHz
Driver Power Capacity
40W (160W peak), 2 hrs25W (100W peak), 100 hrs
Safety Agency
Transformer is UL registered per UL1876
Installation
Full assembly consists of 8138 speaker plus MTC-81BB8 backbox andMTC-81TB8 tile bridge. Four screw holes at industry standard 286 mm (11.25 in) mounting circle.
Mounting Points
4 points on 286 mm (11.25 in) diameter mounting circle
Backcan
formed steel (accessory)
Baffle/Rim
Plastic
Plenum Usage
Yes, with accessory backcan
Why Choose SoundPro?
Since 1972, SoundPro has been the trusted source for audio, video, and lighting gear. Whether you're starting your AVL journey or are a seasoned professional, we're here to help you every step of the way.