What Is Included In The RMC Calibration Kit
•
Specialized Sound Level Meter
•
Calibration CD
•
User Guide
•
Measurement Chart Paper (make additional 1-to-1 copies for future use)
•
Width Template
•
RMC Adjustment Tool
•
RMC Remote Bypass Control
•
9 Volt Alkaline Battery
How To Use The RMC Kit
Using the calibration CD, warble tones spaced approximately on one-tenth octave centers
are played over the speaker systems, and the room response is measured and plotted
point-by-point on chart paper. The center frequency of a response peak is identified, and,
using the Width Template, the width of the peak is determined. The height of the peak in
dB is also measured. These three values are then entered into the RMC equalizer section
located on the rear electronics panel of the LSR6328P or LSR6312SP and, using a look-up
table in this manual, an inverse frequency response curve is introduced into the system.
The RMC Meter: Two views of the RMC sound level meter are shown in Figure 2. The
meter has a press and hold switch to incease battery longevity. Full-scale on the meter
corresponds approximately to a sound pressure level of 86 dB. The meter's scale covers a
range of 16 dB, the same as that of the chart paper you will use to record your measure-
ments. Here is a list of meter status indications:
•
Power-On/Low Signal: This is indicated by the
illumination of any LED on the bar graph. If
the sound level in the listening space is below
the measurement range of the meter, a green
LED near the bottom of the bar graph will light.
•
Overload: If the sound level in the listening
space exceeds the range of the meter, 0 dB
through -5 dB will all light simultaneously.
•
Normal Measurements: When the sound level
is within the range of the meter, the green LED
will be off and one of the red LEDs on the bar
graph will be illuminated, indicating the relative
sound level in decibels (dB).
•
Low Battery: When the battery voltage is too
low for accurate measurements, an LED at the
bottom of the bar graph will be illuminated. At
this point, replace the battery. (We recommend
that you keep a spare battery on hand.)
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-18
U-R
Ball
Power
Side
Front
Figure 2
4
Summary of Contents for Room Mode Correction
Page 1: ...RMC Room Mode Correction User Guide...
Page 23: ...23...
