14
3. Proceed to the next Setup Menu Item or press
the MONO/SETUP Push-button to exit the Setup
Mode.
FM Seek Sensitivity
Depending on reception conditions, distance from
the radio station, radio station power output, placement
and type of the FM Antenna, multipath interference
and atmospheric conditions the received FM Station
Signals can vary from pleasing to just barely listenable.
The MR89 FM Tuner Circuitry incorporates a Variable
Sensitivity Control allowing you to determine the listen-
ing quality of FM Stations it will stop on while seeking.
To accomplish this perform the following steps:
1. Press the MONO/SETUP Push-button until the
Setup Mode is active. Then rotate the PRESET/
MENU Control to select Setup Menu item “FM SEEK
SENSITIVITY”. Refer to figure 6.
FM SEEK SENSITIVITY
LESS || MORE
Figure 6
2. Rotate the
TUNE/ADJUST Control clockwise to
increase the Scan Sensitivity (more stations received,
however some might not be listenable), refer to figure 7.
FM SEEK SENSITIVITY
LESS
MORE
Figure 7
Rotate the TUNE/ADJUST Control counterclockwise
to decrease the Scan Sensitivity (less stations
received, most will be listenable), refer to figure 8.
FM SEEK SENSITIVITY
LESS
MORE
Figure 8
3. Proceed to the next Setup Menu Item or press the
MONO/SETUP Push-button to exit the Setup Mode.
Stereo Blend Type
When receiving low quality (weak, noisy, multipath)
FM Stereo Broadcasts, background noise can be
reduced by blending some of the left and right channel
information together, while still maintaining “The
Stereo Effect.” The MR89 provides two different blend
-
ing types to select from, conventional Stereo Blending,
or Stereo High Blend.
Stereo Blending blends the left and right channel
information together uniformly across the audio
frequency range as signal quality decreases – blending
low and high frequencies the same amount. High
Blend blends the high frequency portion of the audio
frequency range more aggressively. The highest
frequencies are always blended and, as signal quality
decreases, more and more of the high frequencies are
affected until the effect transitions to conventional
Stereo Blending.
To select Blending Type perform the following steps:
1. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then rotate the PRESET/MENU
Control to select Setup Menu item “SETUP: BLEND
TPYE.” Refer to Figure 9.
SETUP: BLEND TYPE
STEREO
Figure 9
2. Rotate the TUNE/ADJUST Control to select
“STEREO” for conventional Stereo Blending, or
“HIGH BLEND” to select High Blend. Refer to
Figure 10.
SETUP: BLEND TYPE
HIGH BLEND
Figure 10
3. Proceed to the next Setup Menu Item or press the
MONO/SETUP Push-button to exit the Setup Mode.
Stereo Blend Mode
The MR89 allows changes in the amount of Stereo
Separation via the Stereo Blend Function. When receiv-
ing weak FM Stereo Broadcasts any background noises
can be reduced by blending some of the left and right
channel information together, while still maintaining
“The Stereo Effect”.
To change from the Normal Setting perform the
following steps:
1. Press the MONO/SETUP Push-button until the
Setup Mode is active. Then rotate the PRESET/
MENU Control to select Setup Menu item “SETUP:
STEREO BLEND NORMAL”. Refer to figure 11.
SETUP: STEREO BLEND
NORMAL
Figure 11
2. Rotate the
TUNE/ADJUST Control to select “LESS
NOISE” for a reduction in background noise or select
“MORE SEPARATION” with a possible increase in
background noise over the NORMAL Setting. Refer
to figures 12 and 13.
SETUP: STEREO BLEND
LESS NOISE
Figure 12
SETUP: STEREO BLEND
MORE SEPARATION
Figure 13
3. Proceed to the next Setup Menu Item or press the
MONO/SETUP Push-button to exit the Setup Mode.
Deemphasis
The FM Transmission Standard uses Preemphasis
(boosting the volume level of the high frequencies)
of the audio signal before transmssion. Inside the
