ALESIS Matica 900 - Manual (Page 9)

Installations
8 Matica 500/900 Reference Manual
Audio Installation: Input Wiring
SHOCK HAZARD – DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS.
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
MOUNT IN RACK ONLY. INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT.
WARNING/AVIS:
´
ALESIS CORPORATION, LOS ANGELES
SOUND REINFORCEMENT DIVISION
Patent Pending
USE CLASS 2
WIRING
MATICA MODEL INPUT POWER OUTPUT POWER
500 900 600 VA 1200 VA 250 W@4 W
450 W@4 W
MATICA POWER AMPLIFIER ™
DUAL
CHANNEL
AUDIO INPUT WIRING
=
=
= TIP
RING
SLEEVE
=
=
= PIN 2
PIN 3
PIN 1
BRIDGED
MONO
B
OUTPUT OUTPUT
A
FOR BRIDGED MONO
USE A INPUT 120 V 60 Hz
Figure 2: Amplifier rear panel controls and connections.
Warning: Be sure that the AC power is off prior to connecting or disconnecting any
signal wiring.
The input circuits of the Alesis amplifiers are electronically balanced. They may
be fed from either symmetrical (ÒbalancedÓ) or unbalanced sources. There are two
combination XLR/1/4Ó (6.3 mm) jacks provided, one for each channel, and a barrier
screw terminal strip for connecting bare wire or crimp terminals. See Figure 2.
The inputs are wired according to IEC standards:
Connection XLR Phone Jack
Audio Ground Pin 1 Sleeve
High (+) Pin 2 Tip
Low (Ð) Pin 3 Ring
Table 1: Input Wiring
Figure 3. Balanced wiring of an XLR input connector.
Figure 4. Unbalanced wiring of an XLR input connector.