| 频率范围 (-10dB) | 45 Hz to 20 kHz |
| Frequency Response (±3 dB) | 62Hz - 16 kHz |
| 额定功率 | 240 W Continuous Program (2 hrs) *Continuous Pink Noise rating is IEC-shaped pink noise with a 6 dB crest factor. Continuous Program Power is defined as 3 dB above the Continuous Pink Noise Rating and is conservative expression of the system’s ability to handle normal speech and music program material. |
| Maximum Input Voltage | 27.5 V RMS (2 hrs), 55.0 V peak |
| Maximum SPL (1m) | 112 dB ave. Continuous Pink Noise (118 dB peak) *Calculated from sensitivity and power handling, exclusive of power compression. |
灵敏度 | 91 dB, 1W/1m (ave. 100 Hz – 10 kHz) *Half-space (on-wall) averaged 100 Hz – 10 kHz, 2.83V. |
| 覆盖角度 | 100° x 100° *Coverage angle (-6 dB) average between 600 Hz and 12 kHz. |
| Directivity Factor (Q) | 7.3 (averaged 1kHz – 16kHz) |
| 阻抗 | 8 ohms |
| Crossover Type | 2nd order low-pass, 1st order high-pass, plus conjugate shaping |
| 建议的保护高通 | 45 Hz high-pass (24 dB/oct) *For protection against driving below resonant frequency and to keep transformer out of saturation. |
| Drivers | LF: 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. HF: 25 mm (1 in) PEI diaphragm, low-viscosity ferro-magnetic fluid, and lightweight Kapton™ voice coil former. |
| Enclosure | High Impact Polystyrene (HIPS) with 10% glass fill, painted with highly-UV resistant paint on white (-WH) version for maximum UV fade resistance. |
| 网罩 | 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. |
| 装配硬件 | 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. |
| Outdoor Capability | 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. |
| 输入接口 | 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. |
| Safety Agency | ROHS-compliant |
| Colors | Black (RAL9004) or white (-WH, RAL9016) |
| 尺寸（高 x 宽 x 厚） | 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. *In vertical orientation |
| Net Weight (each) | 6.2 kg (13.5 lbs) |
运输重量 | 13.4 kg (29.5 lbs) pair-packed (for 2 speakers) |
随附配件 | InvisiBall™ wall-mounting system, 6 mm x 180 mm hex key |
| Optional Accessories | MTC-28UB-1 – Yolk-type U-bracket (&-WH) |
2021-10
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