Manual-3
Rear Panel Description
1
INPUTS
are balanced Euroblock connectors, one for each channel. We recommend the use of at least 18 AWG wire for reliability.
Driving the MA3 from a balanced source is recommended. If you must drive the MA3 Input with an unbalanced source, use a
cable that has two conductors plus a shield. Connect the (+) or “hot” source to the MA3 (+) Input, the ground to the MA3 (–)
Input and connect the shield to the MA3 shield input. Do
not
connect the shield on the source end. Shield connections go directly
to chassis ground and should not be used as signal ground. Shield connection to chassis occurs via the screw found between the
Input and Output connectors—keep this screw tight for improved EMI protection. When operating the MA3 with unbalanced
Inputs, be sure to keep cable lengths as short as possible. Refer to the RaneNote
“Sound System Interconnection”
(included in this
booklet) for additional information.
2
LEVEL
controls adjust the input sensitivity for each of the three Amplifiers. The internal Limiters have maximum operating range
(most amount of limiting before input overload) when the LEVEL controls are set to maximum. For best
system
noise perfor-
mance, the input sensitivity may be reduced to send a “hotter” signal to the Amplifier. Here we go again! You get nothing for free.
There are always tradeoffs to be made (better overdrive capability
or
lower system noise). The choice depends on your application.
For additional information see the RaneNote
“Setting Sound System Level Controls”
available in the Library on our website.
3
OUTPUTS:
Connect the speaker(s) or transformer(s) to each of the three channels by means of the Euroblock connectors with 12
to 18 AWG wire. See Speaker Connection on page Manual-1.
4
IEC cord socket:
This connector accepts a standard IEC 3-conductor line cord (included with 120V units). Plug this into a
grounded
3-prong AC outlet of 120 VAC (or 230 VAC if the MA3 is internally wired for 230V operation).
5
Heat tunnel air intake:
The fan draws air in through the finger guard on the rear of the unit. The air flow is directed down a
sealed heat tunnel and exhausts through front panel vents. No filter is required as air flow is directed through an unobstructed
sealed tunnel and will not contaminate internal circuitry.
OUTPUT POWER
PER CHANNEL
40 WATTS / 8Ω
60 WATTS / 4Ω
12-18 AWG — USE CLASS 2 WIRING
LEVEL
+ -
+ -
+
+
+
+
-
-
-
-
+
+
+
-
-
-
+ -
+ -
+ -
10
0
LEVEL
LEVEL
10
0
10
0
MA3
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO
NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO
NOT REMOVE COVER. NO USER SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
AVIS
RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR
CH 3
CH 2
CH 1
OUTPUTS
INPUTS
CHANNEL 1
CHANNEL 2
CHANNEL 3
120 V
50/60 Hz 360 WATTS
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING
TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE
MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE
UNDESIRED OPERATION. THIS CLASS B DIGITAL APPARATUS COMPLIES WITH CANADIAN ICES-003. CET
APPAREIL NUMÉRIQUE DE LA CLASSE B EST CONFORME À LA NORME NMB-003 DU CANADA.
COMMERCIAL AUDIO
EQUIPMENT 24TJ
R
MADE IN U.S.A.
RANE CORP.
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4
2
1
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