6" x 9" Coaxial Wide Range Speaker Pair

Brand Name
Red Line
Part #
MX-69B
In stock
$99.98
  • MSRP$149.99
  • Buy 1 - 5$99.98
  • Buy 6 - 11 $94.98
  • Buy 12 - 99 $80.73
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A pair of 6 x 9” coaxial speaker with electroplate titanium cones, mounted polycarbonate dome tweeters, and black grilles included for protection and concealment. These Red Line speakers are a great car aftermarket, arcade, or theme park ride audio solution.

  • Wide range speakers with coaxially mounted dome tweeter
  • 6 x 9" steel basket diameter
  • 60 watts, 4 ohm, 89 dB SPL
  • 1" copper voice coil, Kapton former
  • Ferrite magnet, electroplate titanium cone
  • Black grille

MISCO engineers test and analyze the performance of these speakers using the world's most sophisticated loudspeaker measurement systems including the Klippel Analyzer and the Klippel QC, which confirm the final design.  

Download Product Specifications (PDF) »

More Information
Brand Name Red Line
Speaker Type Wide Range
Shape of Speaker Oval
Size, Nominal (inch & mm) 6" Oval (152 mm)
Environment Indoor
Application Auto / Motorcycle, Indoor
RoHS Compliant No
Rated Impedance (Ω) 4
Rated Power IEC268-5 (W) 60 Watts
Program Power (W) 120
Sensitivity (dB SPL) ¹ 89
Frequency Range (Hz) 50 - 20,000
DC Resistance (Re) (Ω) 3.3
Resonant Frequency (Fs) (Hz) 65
Nominal Impedance (Z) (Ω) 4
Mechanical Q Factor (Qms) 6.6
Electrical Q Factor (Qes) 1.17
Total Q Factor (Qts) 0.99
Basket Type Stamped steel
Terminal Size (mm) 0.205 x 0.02
Voice Coil Diameter (mm) 25.4
Voice Coil Wire Material Copper
Voice Coil Former Material Kapton
Magnet Material Ferrite
Magnet Weight (gm) 341
Cone Body Material Titanium electroplated polypropylene
Cone Surround Material Santoprene rubber
Dust Cap Material Felt
Net Weight (kg) 1.12
Technical Notes

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