Universal Audio LA-3A - Manual (Page 10)

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• When changing operating voltage, the fuse value must be changed as well.
• Make sure the LA-3A is properly set for the voltage in your area before applying AC power to unit!
Input/Output Terminal Strip
The terminal strip provides screw connections for INPUT, OUTPUT, STEREO balance and CHASSIS GROUND.
The strip can be used instead of the XLR connections. In addition, you can use the XLR OUTPUT as well as the
terminal strip output to “split” the output signal and feed two separate devices. The terminal strip is the only
means to connect two LA-2As for stereo operation. See Stereo Operation on the next page for more info. NOTE:
The 600 ohm resistor across screws 5 & 6 must not be removed for proper operation of the output terminals
AND the Output XLR jack.
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Unbalanced Connections
Connect the “hot” cable lead (usually pin 2 of XLR cable) to the +/- terminal. Connect the “shield braid” to the
COM terminal.
Balanced Connections
Connect the “hot” cable lead (usually pin 2 of XLR cable) to the +/- terminal. Connect the “neutral” lead (usu-
ally pin 3 of XLR cable) to the COM terminal.
Chassis Ground
Connect the ground or “shield braid” (usually pin 1 of XLR cable) of the LA-3A output only. However, you may
not want to connect this wire if it causes hum noise in the audio signal. You may need to connect the input
cable ground wire as well if it eliminates hum problems.
STEREO OPERATION
Rear Chassis Link Connections
Connect a shielded cable to the CHASSIS and STEREO pins on the rear panel of one LA-3A. Connect the shield
wire to the CHASSIS (3) terminal and the “hot” or center lead to the STEREO (4) terminal. Connect the other end
of this cable to the second LA-3A in the same fashion