分频器类型：二谐低通，一谐高通加上上轨成形电路系统
• 低频单元：8寸玻璃纤维编织音盆
• 高频单元：1寸聚乙烯亚胺膜
• 频率范围(+/-10 dB)：45Hz-20kHz
• 频率响应（+/-3 dB)1：62Hz -16kHz
• 节目功率(蜂值功率)：240W连续节目功率(2小时）;480W峰值)，连续粉红噪声(2小时）；(360W峰值)，连续粉红噪声(100小时）
• 较大输入电压：27.5 V RMS (2小时）， 55.0 V 峰值
• 较大声压级：112 dB peak
• 灵敏度：91 dB，1W/1m (100Hz -10kHz)
• 覆盖角度：100°×100°
• 指向性因子(Q)：7.3 (1kHz-16kHz）
• 指向性指数(DI)：8.3dB (1kHz-16kHz）
• 额定阻抗：8 ohms (直通）
• 接口类型：XLR平衡输入
• 尺寸：282mm x 219mm x 386mm
• 重量：6.2kg（13.5磅）
SPECIFICATIONS
| Frequency Range (-10 dB) | 45 Hz to 20 kHz | |
| Frequency Response (+/-3 dB) | 62Hz - 16 kHz | |
| Power Rating2 |
240 W Continuous Program (2 hrs) |
|
| Maximum Input Voltage | 27.5 V RMS (2 hrs), 55.0 V peak | |
| Maximum SPL3 | 112 dB ave. Continuous Pink Noise (118 dB peak) | |
| Sensitivity4 | 91 dB, 1W/1m (ave. 100 Hz – 10 kHz) | |
| Coverage Angle5 | 100° x 100° | |
| Directivity Factor (Q) | 7.3 (averaged 1kHz – 16kHz) | |
| Nominal Impedance | 8 ohms | |
| Crossover Type | 2nd order low-pass, 1st order high-pass, plus conjugate shaping | |
| Recommended Protective High-Pass6 | 45 Hz high-pass (24 dB/oct) | |
| Low Frequency Driver | 200 mm (8 in), woven-fiberglass cone with pure butyl rubber surround with Weather-Edge frame protection, high-temp fiberglass voice coil former, high-temp voice coil wire, optimized cone geometry, linear suspension spider, and FEA optimized motor structure. | |
| High Frequency Driver | 25 mm (1 in) PEI diaphragm, low-viscosity ferro-magnetic fluid, and lightweight Kapton™ voice coil former. | |
| Enclosure Material | High Impact Polystyrene (HIPS) with 10% glass fill, painted with highly-UV resistant paint on white (-WH) version for maximum UV fade resistance. | |
| Grille | Highly zinc-plated, finished in durable TGIC polyester powdercoating. MTC-28WMG-1 (&-WH) available with WeatherMax™ multi-layer foam and tight-weave mesh vapor barrier backing. | |
| Installation | InvisiBall wall-mounting system included. Two 6 mm attachment points (on top and bottom) for optional MTC-28WMG-1 (&-WH) U-bracket. Secondary safety attachment loop point on back panel. | |
| Environmental | IP-44 per IEC529 (IP-55 when installed with the optional MTC-28WMG-1 WeatherMax™ grille and either MTC-PC2 or MTC-PC3 panel cover.) Exceeds MilSpec 810 for humidity, salt-spray, temperature & UV. Passes MilStd-202F for salt spray and ASTM G85 for acid-air plus salt spray. Optional MTC-28WMG-1 WeatherMax™ grille for breaking up driving rain and for especially difficult environments. | |
| Termination | Screw-down terminal strip, zinc-plated copper based, nickel-plated metal screws and washers. Accepts up to 9 mm outside 4 mm inside open lugs (#6, #8, or #10 lug), plus bare wire (up to 12 AWG / 2.5 mm2). Optional MTC-PC2 and MTC-PC3 protective panel covers available to provide sealed entrance for additional weather protection. | |
| Agency Rating | ROHS-compliant | |
| Colors | Black (RAL9004) or white (-WH, RAL9016) | |
| Dimensions (H x W x D)7 | 386 x 282 x 219 mm (15.2 x 11.1 x 8.6 in); 277 mm (10.9 in) deep total when mounted on InvisiBall wall-mount bracket. | |
| Net Weight | 6.2 kg (13.5 lbs) | |
| Shipping Weight | 13.4 kg (29.5 lbs) pair-packed (for 2 speakers) | |
| Included Accessories | InvisiBall™ wall-mounting system, 6 mm x 180 mm hex key | |
| Optional Accessories | MTC-28UB-1 – Yolk-type U-bracket (&-WH) |
规格参数
| 产品名称 : | 音箱JBL/Control 28-1L，8寸，功率240W |
| 产品品牌 : | JBL |
| 品牌/型号: | JBL |
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