1. AC LINE CORD - The MX842 employs a heavy
duty removable grounded AC cord and
should only be plugged into a grounded “3
prong” power outlet. If a grounded outlet is
not available, the amp should not be used.
For safety, no attempt should ever be made to
defeat the ground pin of the AC line cord.
2. AC LINE FUSE - The MX842 fuse is built into
the AC receptacle socket—marked by an
arrow on the rear panel pointing to the
receptacle. The fuse can be changed by
removing the AC cord and wedging a slot-
head screwdriver under the top to pull out the
fuse holder. Once out, the fuse can be
replaced (there is room for a spare fuse in
the tunnel).
NOTE: 120 volt fuses are available from
Radio Shack: Part No 270-1175 for a 5 Amp
slow-blow fuse for 120 volt use and 2.5 Amp
for 220 volt use. Use slow-blow 5 x 20mm
fuses only.
3. 120/240 VOLT SWITCH - Check and change if
necessary the rear AC Voltage Switch to the
proper voltage. If a switch is not found, than
pull out the Fuse Holder (built into the AC
cord receptacle) and turn it over to the proper
voltage as seen on the holder reading right
side up (
)—this automatically switches the
voltage and the fuse to the proper voltage and
fuse value. Be sure to change the fuse value
(listed on rear panel) as you change the
voltage setting.
4. POWER SWITCH - To turn your MX842 on,
simply press the switch to the “ON” position
as listed on the rear panel. The red LED
below the bottom MASTER level control will
light to indicate you have power to the unit.
5. SPEAKER CONNECTIONS - The MX842
incorporates two speaker connectors for each
channel. SPEAKER 1 is for the LEFT
(Monitor) amp while SPEAKER 2 is from the
RIGHT (Mono) amplifiers. One standard 1/4”
and one XLR-male connector are featured for
each channel.
NOTE: These connectors are wired in
“parallel”. The MX842 minimum impedance
is 4 ohms per channel. Any loads below 4
ohms will engage the protect light—see Pg
1-4 section 2b. Use non-shielded 16 gauge
or heavier cable. See Pg 4-1 FIG 3.
6. COOLING - To prevent the PROTECT LED
from coming on, be sure the rear heatsink
fins have plenty of fresh air. Never lay the
unit on its back blocking air.
OFF
ON
120 VAC: 5 AMPS/250V
240 VAC: 2.5 AMPS/250V
FUSE
200-200 Watts / Min. Imp. 4 ea ch
120-240 VAC 50-60 Hz 540VA
FUSE: 5A @ 120V / 2.5A @ 240V slow blow
1155 Industrial Ave., Escondido, CA, 92029
Tell 619-747-1710
MADE IN THE
USA
MX842
CAUTION— To prevent electric shock do not defeat
the safety ground on the power cord. Do not remove
the cover. No user- serviceable parts inside.
WARNING — To prevent fire or shock hazard do not
expose to rain or moisture. Do not install a wrong fuse
value. DANGER — To prevent a fire hazard, provide
adequate ventilation!
AMP 1
4 Ohms Min
PROVIDE ADEQUATE VENTILATION
(3" MINIMUM CLEARANCE)
3
4
2
1
AMP 2
4 Ohms Min
SPEAKER OUTPUTS
MX842
Outputs
AMP 1
AMP2
Left
Right
Monitor
Mono
Mode
L / R
MON
HIGH CURRENT
XLR WIRING
3 (NOT USED)
1 GROUND (-)
2 SIGNAL (+)
3
1
2
5
6
Select Mode by L/R-MONITOR Sw Pg 2-2
12
MX842 Rear Connections
120240
3-2
Содержание MX842
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