Defender/Challenger/American Coach F-550 CNG

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Interior Noise Test Data Form

Test Condition 2: 0 to 35 mph Acceleration Test

Date 2012-09-28
Personnel T.S., S.R. & M.Z.
Temperature (°F) 59
Humidity (%) 94
Wind Direction WSW
Wind Speed (MPH) 7
Barometric Pressure (in.Hg) 30.07
Initial Sound Level Meter Calibration checked by S.R.
Interior Ambient Noise Level dB(A) 30.0
Exterior Ambient Noise Level dB(A) 41.9
Microphone Height During Testing(in) 29
Measurement Location Measured Sound Level dB(A)
Driver's Seat 72.3
Front Passenger Seats 69.8
Middle Passenger Seats 67.3
Rear Passenger Seats 67.4
Final Sound Level Meter Calibration checked by S.R.
Comments
<p>All readings taken in the center aisle.</p>