Specifications JBL 276ND:

Throat Diameter: 25 mm (1 in)

276ND - 8 ohms

Minimum Impedance: 5 ohms (H), 5 kHz

D.C. Resistance: 3.3 ohms (H), ± 10% 25°C

Power Capacity:

70 W continuous Program above 800 Hz

100 W continuous Program above 1.2 kHz

Sensitivity:

107 dB SPL, 1 W 1 m, JBL 2344A horn

110 dB SPL, 1 W 1 m, JBL 2370A horn

117 dB SPL, 1 mW on plane wave tubes

Nominal Efficiency: 25% (800 Hz to 2.5 kHz)

Frequency Range: 500 Hz to 20 kHz

Recommended Crossover4: 800 Hz or higher, 12 dB/octave slope minimum

Diaphragm: 0.05 mm (0.002 in) pure titanium

Voice Coil Diameter: 44 mm (1% in)

Voice Coil Material: Edgewound aluminum ribbon

Flux Density: 1.8 T (18,000 gauss)

Bl Factor: 6.3 N/A(H)

MOUNTING INFORMATION:

standard 1 3/8 in -18 screw threads

Dimensions: 149 mm (5 7/8 in) diameter

104 mm (4 1/8 in) depth

Net Weight: 4.3 kg (9½ lb)