Frequency Response (-10dB)

45 Hz to 20 kHz

Frequency Response (±3 dB)

62Hz - 16 kHz

Power Rating

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.

Sensitivity (1W, 1m)

91 dB, 1W/1m (ave. 100 Hz – 10 kHz) *Half-space (on-wall) averaged 100 Hz – 10 kHz, 2.83V.

Coverage Angle

100° x 100° *Coverage angle (-6 dB) average between 600 Hz and 12 kHz.

Directivity Factor (Q)

7.3 (averaged 1kHz – 16kHz)

Impedance

8 ohms

Crossover Type

2nd order low-pass, 1st order high-pass, plus conjugate shaping

Recommended Protective High-Pass

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.

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.

Mounting Hardware

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.

Input Connectors

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)

Dimensions (H x W x D)

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)

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)