ASA Electronics MS-850 - Manual (Page 4)

This note will discuss DC Power sources and how they relate to 12 volt
products .
General Specifications
Our general specification for the voltage range of operation is 10 to
16 volts DC .
Voltage
The voltage of a fully charged battery ( engine not running ) is
approximately 12.5 VDC. Once a load (items being powered represent the
"load" ) is applied , the voltage will drop. How much the voltage is reduced will
depend on the following:
1. Current draw (amount of amperage) The higher the draw the
greater the voltage will drop.
2. The size and length of the conductor (wire) supplying power.
Converters
Many boats incorporate convertors as a source for 12VDC when
connected to shore power (110-120 VAC). Some converters put out a very
clean DC supply where others may have a considerable amount of AC
ripple noise under maximum load.
This AC ripple noise is filtered by the boat battery when connected
into the circuit, but when the battery is disconnected the amount of AC
ripple noise can create major problems for audio products. Noise may
result and the line fuse may fail .
APPLICATION NOTES
4 SPEAKERS, WITH FADER
Negative (- ) ground connection (black)
Connect to the car chassis ( - ) via the black connection lead.
Note: Ground over antenna socket is not sufficient.
( + ) 12 volts battery / permanent / memory (Orange)
Connect to uninterrupted positive supply, terminal (behind the
car fuse) via the connection lead.
( + ) 12 volts/ power line (RED)
Connect the connection cable to fuse holder terminal (switched
by the ignition switch) or to uninterrupted positive supply termi-
nal (behind the fuse).
Connection for External Amplifier (white / red) (OPTION).
Using these connections an additional amplifier may be
connected.
FM
Frequency range . . . . . . . . . . . . . . .88-108 MHz
(87.5-108 MHz)
Usable sensitivity. . . . . . . . . . . . . . . . . . . . . . . . .3 V
I.F. Frequency . . . . . . . . . . . . . . . . . . . . . . 10.7 MHz
MW (AM)
Frequency range . . . . . . . . . . . . . . . .520 -1710 KHz
(531-1602 KHz)
I.F. Frequency . . . . . . . . . . . . . . . . . . . . . . . 455 Khz
LINE - OUT (OPTION)
Output level. . . . . . 350 mV @ FM 10% THD power
Impedance . . . . . . . . . . . . . . . . . . . . . . . . .600 ohm
CD PLAYER
System . . . . . . . . . . . . .Compact disc audio system
Usable disc. . . . . . . . . . . . . . . . . . . . .Compact disc
Signal format. . . . . . .Sampling frequency :44.1KHz
No of quantization bits:1bit
Frequency characteristics . . . . . . . . . . . 5-20,000Hz
Signal to noise ratio. . .70dB(1KHz)(IEC-A network)
Number of channels. . . . . . . . . . . . . . . . . . .2 stereo
GENERAL
Power requirement . . . . . . . .DC 12.0V/Rated:14.4V
Negative ground
Current consumption . . . . . . . . . . . 10 A MAXIMUM
Speaker Impedance . . . . . . . . . . . . . . . . . 4 - 8 ohm
Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . 80W
Dimension (SET) . . . . . . . 178(W)x50(H)x150(L)mm
Maximum allowable Mounting angle
---Front to back . . . . . . . . . . . . . . -10 - +30
---Side to Side . . . . . . . . . . . . . . -10 - +10
* OPTION
NOTE:
Specification is subject to change without further
notice
REAR LEFT SPEAKER
FRONT LEFT SPEAKER
WHITE W/BLACK
GREEN
WHITE
GREEN W/BLACK
REAR RIGHT SPEAKER
BLACK GROUND (-)
FRONT RIGHT SPEAKER
GREY W/BLACK
VIOLET
GREY
VIOLET W/BLACK
RED B+ FUSE (ACC)
* OPTION
UNIT
BLUE POWER ANT
ANTENNA
RCA RED (RIGHT)
RCA WHITE (LEFT)
CONNECTIONS
WIRING DIAGRAM
(Figure 2)
3 6
(Figure 2)
Please remove this shipping screw before
installation. If the screw is left in place, the
CD mechanism will not operate.
After remove the shipping screws, apply
the stickers provided on the two screw holes
in order to prevent possibility for the water
drops from getting into the unit.
Sticker
TRANSPORTATION SCREW
Sticker