The 8138 is an 8-inch, full-range, in-ceiling loudspeaker designed for use with a pre-install, in-ceiling backcan, resulting in high-fidelity performance at a cost-effective price point. The 8138’s built-in, 6-Watt, multi-tap transformer allows for use on 70V or 100V distributed speaker lines. Additionally, its high sensitivity of 97 dB delivers maximum sound levels using minimal amplifier power, allowing the use of smaller power amplifiers compared to lower sensitivity drivers.
The 8138’s driver features a 1-inch voicecoil with Kapton® coil former for reliability. The treated cloth surround provides deeper bass response compared with typical paper-roll surrounds, for fuller sound quality. The 8138 fits the MTC-81BB
backcan and MTC-81TB tile bridge, or can be used with most in-ceiling backcan/tile bridge systems designed with four mounting points on a standard 11.25-inch diameter mounting circle. Moreover, with its contemporary grill design, the 8138 provides a stylish, upscale look that fits into many décors, bringing style and performance to basic commercial sound systems. “Since introducing the original 8100 Series ceiling speakers—the 8124 and 8128, which are designed for applications where backcans are not needed—we have received requests to bring the same fashionable look and affordability to projects where pre-installed backcans are required,” said Rick Kamlet, Senior Director, Commercial Installed Sound, JBL Professional. “The 8138 addresses that need. By adding these new items, 8100 Series models are now available for both application types.”
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