JBL Professional 8138

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8" (200 mm) 全音域吊顶扬声器，适用于
预安装背筒

8138 是一款 8" 吊顶扬声器，设计用于与预安装的吊顶背筒配合使用，实现高保真性能，价格极具竞争力。8138 非常适合各种商业音响应用，从餐厅和零售到专业办公室和接待区。

特点

Stylish, contemporary appearance enhances any decor.
Clear sound from an 8 inch dualcone full-range driver.
Very high sensitivity of 97 dB for maximum sound levels using minimum amplifier power.
6W transformer for use on 70V/100V distributed speaker lines
Installs to in-ceiling backboxes having 4 mounting points on an 11.25" (286 mm) diameter mounting circle.
For use with MTC-81BB8 backcan and MTC-81TB8 tile bridge

下载

Specifications

	大小	上传日期
8138 Spec Sheet 更新: 10月 2020	363.0 KB	10月 2020

Brochures

	版本	语言	大小	上传日期
Control Contractor Brochure (2024) 版本 D, 更新: 2月 2024	D		14.0 MB	2月 2024

Compliances

	大小	上传日期
8138 Declaration of Conformity 更新: 10月 2020	88.0 KB	10月 2020

Software

	版本	大小	上传日期
Distributed System Design (DSD) 版本 3.9, 更新: 11月 2025	3.9	611.8 KB	11月 2025

FAQs

	大小	上传日期
8138 Frequently Asked Questions 更新: 10月 2020	31.5 KB	10月 2020

Images

	大小	上传日期
8138 Hi Res Image 更新: 10月 2020	12.1 MB	10月 2020

Speaker Tunings

	版本	大小	上传日期
Commercial, CBT, and AWC Tunings 220616 版本 A, 更新: 5月 2023	A	557.0 KB	5月 2023

Accessories

	版本	大小	上传日期
Ceiling Speaker Accessory Guide 版本 2026-04, 更新: 5月 2026	2026-04	570.0 KB	5月 2026

Quick Start Guides

	大小	上传日期
Quick Start Guide - JBL 8100 Series 更新: 6月 2025	412.3 KB	6月 2025

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零件与服务

性能

Drivers	200 mm (8 in) Full-Range, Dual-cone
频率范围 (-10dB)	95 Hz – 18 kHz
覆盖角度	90° conical
灵敏度	97 dB (2k - 8k Hz)
Driver Power Capacity	40W (160W peak), 2 hrs25W (100W peak), 100 hrs
变压器抽头	6W, 3W, 1.5W, (0.75W at 70V only)
输入接口	Bare Wire
Magnet	10 ounces (283 g)
Safety Agency	Transformer is UL registered per UL1876
安装方式	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.
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 Size	300 mm (11.75") with tile bridge and backbox.228 mm (9.0") diameter as stand alone.
净重量	1.4 kg (3.0 lb)
随附配件	Integral grille, 4 pcs M4 x 40 mm tapping screws
Optional Accessories	MTC-81BB8 backcan, MTC-81TB8 tile bridge
额定功率	See transformer taps
Maximum SPL (1m)	105 dB (top 70V/100V tap)
颜色	White
Backcan	formed steel (accessory)
Baffle/Rim	Plastic
Plenum Usage	Yes, with accessory backcan

配件

MTC-81BB8 | Pre-Install In-Ceiling Backcan

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Pre-Install In-Ceiling Backcan

The MTC-81BB8 is designed for use in applications requiring preinstalled backcans and is compatible with ceiling speakers having a 286 mm (11.25 in) mounting circle diameter, such as the JBL 8138 ceiling loudspeaker, and the JBL MTC-81TB8 tile bridge for suspended ceilings.

Fits 8138 speaker and MTC-81TB8 Tile Bridge
Extra-large 7.4 liter (0.26 cu ft) volume allows for extra bass
Industry standard 286 mm (11.25 in) mounting circle
Five conduit knockouts
Nesting during storage minimizes storage space requirements

说明书

MTC-81BB8 Spec Sheet [176.1 KB]
8138 Frequently Asked Questions [31.5 KB]
MTC-81BB8 Hi Res Image [9.2 MB]
Quick Start Guide - JBL 8100 Series [412.3 KB]

MTC-81TB8 | 预安装天花板瓷砖桥用于预安装后箱

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预安装天花板瓷砖桥用于预安装背盒

MTC-81TB8瓷砖桥设计用于需要在悬挂天花板应用中预安装的背盒，并与具备286 mm（11.25 in）安装圆圈直径的天花板扬声器兼容，如JBL 8138天花板音箱和JBL MTC-81BB8预安装背盒。

Fits 8138 speaker and MTC-81BB8 backbox
Load-bearing bridge eliminates ceiling tile sag by distributing weight to the ceiling’s support system
Rust-resistant 19-Gauge (1 mm thick) steel construction and e-coated finish ensures long service life.
Fits 610 mm (24 in) and 600 mm (23.6 in) tile grids