Sansui SE-9 - Microphone and Sound Field Analysis; Microphone Battery Management; Measuring Sound Fields

12
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ANALYZE
‘DISPLAY
LEFT
DISPLAY
FA
Loading the accessory microphone battery
The accessory condenser microphone does not work unless its battery is
loaded. Refer to the illustration and load the accessory 1.5 V size ’’AA”
(1EC R-6) battery, making sure that its polarities are aligned correctly.
1. Slide the microphone’s battery holder cover and pull it out.
2. Load the battery, taking care to match its polarities as shown in the
illustration.
3. Slide the battery holder cover into position by following the reverse
procedure to its removal.
4. Attach the microphone to the accessory microphone stand by sliding
it into place from the side where the microphone cord is attached.
Replacing the battery
Once the battery becomes flat, it will no longer be possible to perform
compensating (making the sound field flat) and analyzing (measuring the
sound field) operations. In a case like this, refer to the points below and
repiace the battery.
@ Some batteries have the same shape but different voltages. Use the
15 V size "AA" (IEC R-6) battery.
e Use batteries which are designed to prevent leakage of the electrolyte
inside.
Measuring (analyzing) sound fields
It is possible to measure the whole sound field of your stereo system in-
clusive of your listening room by using the accessory condenser micro-
phone and the pink noise generator circuit which is built into this unit.
Depress the POWER switch and supply power to the unit.
Depress the EQUALIZER ‘'DEFEAT"” switch.
Piug the accessory microphone into the MIC jack.
Depress the MODE “ANALYZE” switch.
Rotate the P.N. LEVEL control clockwise to its interim position.
Install the microphone at the location where the measurement is to be
conducted and then set the microphone’s power switch to ON.
When the DISPLAY “RIGHT” switch is depressed, the pink noise is
reproduced through the right channel speaker; when the DISPLAY
‘‘LEFT" switch is depressed, it is reproduced through the left channel
speaker; and when both switches are depressed, it is reproduced
through both channel speakers.
8. Adjust the display level of the spectrum analyzer using the unit's
OUTPUT LEVEL control and the amplifier’s volume control.
9. The overall frequency response of the stereo system picked up by the
microphone can be monitored on the spectrum analyzer.
10. Try measuring and monitoring the overall frequency response at any
point in the listening room.
11. Depress the EQUALIZER ‘‘ON” switch when compensating for the
frequency response using the equalizer controls.
* The overall frequency response of a stereo system is greatly influenced
by the acoustics of the listening room. Try varying the installation
locations of the speakers and the positions of the furniture to make
the display level on the spectrum analyzer flat.
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