Extron electronics XTRA FULL RACK XPA 2002-70V, Руководство пользователя

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XTRA Full Rack Power Amplifier Series • Installation 7
4-pole (8 ohm or 4 ohm) output connector wiring:
1 2
Do not tin the wires!
1
2
OUTPUT
Figure 8. Wiring 4-pole Connectors
ATTENTION:
• Do not short the + and outputs to each other. Doing so may damage the
amplifier.
•
Ne pas créer un court circuit entre les s et au risque d’endommager
l’amplificateur.
For complete wiring details, see the
Rear Panel Features and Operation
starting on
page 10.
5.
Bridge outputs (XPA 2004, and XPA 4002)
— Bridging the output of input 1
(XPA 4002) or inputs 1 and 3 (XPA 2004) doubles the output of each
ON
OFF
respective input (see the Bridged Mode Output on page 16 section for
further details). The bridge output mode toggle switch is shown at right.
Bridge mode — XPA 4002
Bridging takes the signal from input 1 and outputs the
8Ω / 4Ω OUTPUTS
CLASS 2 WIRING
1 2
BRIDGE
8Ω ONLY
BRIDGE
8 Ohm
combined output of 800 watts from the + terminals
of output channels 1 and 2 (see the diagram at right).
Toggle the bridged output mode switch up (bridged) or
down (unbridged).
Bridge mode — XPA 2004
Bridging takes the signal from input 1, input 3 or both
and outputs the combined output of 400 watts from
the + terminals of output channels 1 and 2 (Bridge A),
or output channels 3 and 4 (Bridge B), or both (see the
diagram at right). Toggle the bridged output mode
switch up (bridged) or down (unbridged) for the
appropriate input channel.
NOTES:
• When you are bridging outputs, the minimum load impedance is 8 ohms.
• Adjust the attenuation level to
=
before powering the amplifier back up in step 8
(see Rear Panel Features and Operation on page 10). On some models, this
adjustment is referred to as level , but the function is the same, whichever way your
product is labeled.
8