Tannoy

HPD-315A

Speaker

Main Details
Maker Tannoy Brand
Function
Additional Model ID HPD315/A
Form Factor Part
Signal Path Passive Hardware
Made In Scotland
Date Produced 1975-1978
Dimensions 315mm
Weight 8kg
Additional Specifications
Replacement Woofer Cone P/N 7900-0009
Replacement Tweeter Diaphragm P/N 7900-0205
Driver Type Dual-Concentric Full-Range
Crossover Frequency 1kHz
Crossover Slope 12dB/Oct
Voice Coil Diameter (Woofer) 2"
Voice Coil Diameter (Tweeter) 2"
Impedance (Nominal System)
Impedance (Woofer)
Impedance (Tweeter) 16Ω
Voice Coil Resistance (Re) (Woofer) 5.5Ω
Voice Coil Resistance (Re) (Tweeter) 10.5Ω
Free Air Resonant Frequency (Fs) (Woofer) 25Hz
Moving Mass (Mms) (Woofer) 62g
Electrical Q (Qes) (Woofer) 0.22
Mechanical and Acoustical Q (Qms) (Woofer) 1.75
Total Q (Qts) (Woofer) 0.2
Force Factor (Bl) (Woofer) 15.6
Total Suspension Compliance (Cms) (Woofer) 0.65mm/N
Equivalent Volume Compliance (Vas) (Woofer) 276l
Mechanical Resistance (Rms) (Woofer) 5.6Ωm
Effective Radiating Area (Sd) (Woofer) 550cm²
Sensitivity (Woofer) 93.4dB/2.83V/m
Rated Power (Continuous Program) 60W
Connections
Input
Connector: Binding Post
Controls
Parameter: Treble Energy
Control Type: Rotary Switch
Range: 4
Parameter: Treble Roll-Off
Control Type: Rotary Switch
Range: -2 to 2

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