Martin Logan Spire Speaker

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Spire Specifications
Frequency Response: 29-23,000 Hz ± 3dB
Horizontal Dispersion: 30 degrees
Vertical Dispersion: 44" (112cm) line source
Sensitivity: 91 dB/2.83 volts/meter
Impedance: 4 ohms, 0.8 at 20kHz
Crossover Frequency: 320 Hz
Components: Custom-wound audio transformer, air core coils, polypropylene capacitors
Woofer Type: 10" (25.4cm) (per channel) cast basket, high excursion, aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format
Woofer Amp Power: 200 watts/channel (4 ohms)
Bass Control: ±10dB at 35 Hz
Other Control: Light intensity dimmer control
Power Handling: 250 watts per channel
Signal Inputs: Custom bi-wire binding posts
Weight: 58 lbs./channel (26.3 kg)
Dimensions (HxWxD): 59"x12.5"x17.75"




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