6" (156 mm), 8 Ohm Speaker with 70 Watt Transformer

Brand Name
MISCO OEM
Part #
N9870-1
Built to Order
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THIS IS A “BUILT TO ORDER” PRODUCT

This 6”, 70 volt voice and paging speaker is a designed specifically for rail car applications.  A customized terminal board allows for 1/4" quick connects to attach the audio cable to any one of 4 power taps: 4 watts, 2 watts, 1 watt and 0.5 watt. The dual cone design improves upper-band frequencies to enhance off-axis sound pressure and broad dispersion.
  • Full range transit speaker
  • 6" (156 mm) steel basket diameter
  • 12 watts, 8 ohms, 94 dB SPL
  • 70 watt transformer, 7-pronged terminal board
  • 0.8" copper voice coil, aluminum former
  • Felted paper cone, paper surround
  • Ferrite magnet

Download Product Specifications (PDF) »

More Information
Brand Name MISCO OEM
Speaker Type Full Range
Shape of Speaker Other
Size, Nominal (inch & mm) 6.5" (165 mm)
Environment Indoor
Application Indoor, Transit
RoHS Compliant No
Rated Impedance (Ω) 8
Rated Power IEC268-5 (W) 12 Watts
Program Power (W) 24
Sensitivity (dB SPL) ¹ 94
Frequency Range (Hz) 70 - 16,000
DC Resistance (Re) (Ω) 8
Resonant Frequency (Fs) (Hz) 109
Nominal Impedance (Z) (Ω) 8
Mechanical Q Factor (Qms) 4.7
Electrical Q Factor (Qes) 1.5
Total Q Factor (Qts) 1.10
Basket Type Stamped steel
Terminal Size (mm) 6.35 x 0.76
Voice Coil Diameter (mm) 20.3
Voice Coil Wire Material Copper
Voice Coil Former Material Aluminum
Magnet Material Ferrite
Magnet Weight (gm) 136
Cone Body Material Felted paper
Cone Surround Material Paper
Dust Cap Material Paper
Net Weight (kg) 0.73
Technical Notes

¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance