Technics SH-8055 Service Manual page 5

Speaker Speaker
system system "0 dB" (Center position)
(Left) (Right)
Recommended
microphone:
RP-3800E
(sold separately)
Use the band level controls to adjust the frequencies
displayed on the spectrum analyzer so that they are
all at the same level.
(Position the microphone at the same place Make the adjustment so that the band level controls are
and height as it was for the measurement.) centered around the ''0 dB" position and are not set too
far in either the ''+ dB" or ''— dB" direction.
(After adjustment, the positions of the band level controls
are the ideal listening point.)
(Example of sound field frequency response obtained
through measurement)
Frequency response prior to correction adjustment
capa I it a
10 20 50 100 200 500
Frequency (Hz)
U LLL
0 20 30 100 200 500 1K 2k oh Tk Ok
Frequency (Hz)
eDepending on the listening room, it is not always possible to obtain a perfectly flat response for equalization correction.
eWhen making the correction adjustment, the spectrum analyzer display may not always visually agree with the positions of the band level
controls.
<Microphone to be used with this unit>