HR624-Mk2 Mackie sutdio monitor

HR624-Mk2 Mackie sutdio monitor
Low-frequency driver
Diameter:    6.7 inches (170mm)
Sensitivity (2.83V, 1 m):   89 dB SPL
Nominal Impedance:  4 Ohm
Voice Coil Diameter:  1.25 inches (32mm)
Power Handling (Long Term/Program):  50/150 watts
Frequency Range:    45 Hz to 6 kHz
Frame:      Die-cast magnesium
Magnet:      Ferrite
Fully shielded:    Ferrite opposing magnet
High-frequency driver
Sensitivity (2.83V, 1m):  91 dB SPL
Nominal Impedance:   6 Ohm
Power Handling (Long Term/Program):  20/50 watts
Frequency Range:    1.6 kHz to 22 kHz
Diaphragm/Suspension:  Titanium with polymer suspension
Voice Coil Diameter:  1.0 inch (25.4mm)
Magnet:      Neodymium
Bucking Magnet:    Ferrite opposing magnet
Passive Radiator:  6-inch x 9-inch (152mm x 228mm) mass-loaded elliptical flat piston with variable thickness filleted edge rubber surround.
Low-frequency power amplifier
Rated Power (at 1 kHz with 1% THD):  100 watts
Rated Load Impedance:  4 ohms
Rated THD (1W to –1 dB of rated power):  0.1 %
Slew Rate:    15V/µS
Distortion (THD, SMPTE IMD, DIM 100):  < 0.035%
Signal-to-Noise (20Hz-20kHz, unweighted, referenced to 100W into 4!):  > 101 dB
Cooling:      Convection
Design:      Monolithic IC, Class AB,
Parametric Servo Feedback
High-frequency power amplifier
Rated Power(at 1 kHz with 1% THD):  40 watts
Rated Load Impedance:  6 ohms
Rated THD (1W to –1 dB of rated power):  0.1 %
Slew Rate:    15V/µS
Distortion (THD, SMPTE IMD, DIM 100):  < 0.035%
Signal-to-Noise (20 Hz-20 kHz, unweighted, referenced to 40 W into 8 Ohm):  > 93 dB
Cooling:      Convection
Design:      Monolithic IC,
Conventional Class AB