Coustic 160SE Owner's Manual page 7

FINAL SYSTEM CHECK
INPUT SENSITIVITY ADJUSTMENT
The Input Sensitivity Control is located on the Front Panel. The objective of input sensitivity
adjustment is to match the output of the source unit with the input of the amplifier. The output
voltage of individual source units can vary. For example, some radios have an output of 200 mV,
others have 5 Volts or more. To cater to these variations, the 160SE amplifier has an adjustable
input sensitivity level that ranges from 100 mV to 5 volts.
Adjusting this control requires some experimenting. Basically you want all the gain at the begin-
ning of the system, NOT at the end (amplifier). Turn your headunit volume UP and keep your
amplifier gains at the minimum possible settings. This will give you the best sound and lowest
signal to noise ratio.
Besides better sonic reproduction, proper input sensitivity also helps to prolong the reliability
span of your amplifier by eliminating excessive internal temperature generated by incompatible
source unit output and amplifier input.
Note : Turning the input gain UP does NOT indicate MORE power. Just MORE noise. The input
gain control IS NOT a power control. REMEMBER that the input gain control has nothing to do
with the power output of the amplifier.
OUTPUT INPUT NPUT
5 volts
Figure 9: Input Sensitivity Control
1. Turn the Input Sensitivity Control all the way down (counter clockwise).
2. Set the volume control of the source unit to approximately 2/3 of its maximum output.
3. Turn the balance control of the source unit to its center position.
4. Leave the tone (bass/treble) controls at their usual position.
5. Play a CD or tape track with greater dynamic range
6. To locate the optimum input sensitivity setting, ask the person assisting you to turn the Input
Sensitivity Control clockwise until audio distortion starts to develop. Turn the sensitivity
control backwards slightly to minimize the distortion.
7. If you constantly switch between CD/tape and radio, you will need further adjustment since
radio output level differs from that of CD or tape. In this case, you need to locate a balanced
sensitivity setting which is best for both the output level of radio and that of CD or tape.
12
SENS
MODE
180 180
MIN MAX HPF OFF LPF
30 30
.1 volt
CROSSOVER SELECTION
The amplifier has built-in high-pass/low-pass filters that can be defeated by sliding the switch to
the OFF position.
1. When the high-pass is selected, the amplifier will be devoted to mid/tweeters.
2. When the low-pass is selected, the amplifier will be used to drive woofers/subwoofers.
3. When the filter is switched off, the amplifier is used as a full range amplifier.
CROSSOVER FREQUENCY SELECTION
Both the high-pass and the low-pass section offer 2 crossover frequencies - 80 and 120 Hz.
Choose the setting according to your speaker component specification or to your particular
preference.
80Hz - Low-pass selected
S S
MAX MAX
HPF OFF LPF HPF OFF LPF
Figure 10: Crossover Frequency Selection
RCA
A
outputs
OPTION 1 -RCA Outputs
B
CD-328
PWR EJECT
II
+
MODE LOUD MUTE
LOUD
P.CL
SEL BAND ASM MONO
SHUF RPT SCAN EAS P.ME P.PLA
DISC
REL
– TUNE 1 2 3 4 5 6
DISP WB
CD527 CD/RECEIVER
and CD CHANGER CONTROL
OPTION 2 -Speaker lead Outputs
(Note: You cannot use both RCA and
speaker lead inputs simultaneously!!)
®
– +
A.S.
RESE
TRACK T
SEEK
1 D. SCAN 2 SHUFF
FRONT
speaker lead
outputs Anybody's leased car: high power In dash
option 2
160SE
FRONT speaker
POWER AMPLIFIER
lead Inputs
LoZ (crossover set at 80Hz)
option 1
FRONT RCA
lead Inputs
HiZ
Figure 11. Typical System connection
www.coustic.com
MODE MODE FREQ FREQ
80 80 120 120
Battery
RX-779 MODE POWER
Auto Aligned
CD Changer Control
Azimuth System DOLBY B
P.C
L
BAN DIS
P.ME DIS PRO D P
M C G
AS LOU TUNE
M D SHUFF D.SCAN DISC D.RPT 70 s TPS
TP 70 TRACK
S S ME AM FM 1 2
3
3 T. 4 T. SCAN 5 D. RPT 6 P. PLAY
ST
RPT LOUD
–
+
HS-652a
6 1/2 inch Co-Axial
–
+
A
B
B
13