Sirus ELXA Series, Руководство пользователя

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amplifiers are configured with “Pin 3 hot”). The unused connector can be used to jumper the audio
input to another amplifier input.
5.4. Connecting Outputs
Speakers are connected using 5-way Output Binding Post or Speakon connector, depending on
version supplied. Please note that on the 5-way Output Binding Post version of the ELXA, two pairs of
5-way binding posts are provided for each channel, so that paralleling of speakers is possible.
6. Mode Selection
The three-position, recessed Mode Select switch (located on the rear panel) configures the amplifier
for either Stereo, Parallel or Bridged Mono Mode. Amplifiers are factory configured for Stereo Mode.
6.1. Stereo Mode
In Stereo Mode, both channels operate independently, with their attenuators controlling their
respective levels. Signals at Channel A’s input produces output at Channel A’s output, while signal at
Channel B’s input produces output at Channel B’s output. Recommended minimum nominal load
impedance for stereo operation is 4 ohm per channel.
Either the ¼“ (TRS) input or the XLR input may
be used.
6.2. Parallel Mode
When set to Parallel Mode, a signal applied to Channel A’s input will be amplified and appear at
outputs for both Channels A&B. wird das Eingangssignal des Kanals A verstärkt auf beiden
Ausgängen ausgegeben.
Either the ¼“ (TRS) input or the XLR input on Channel A may be used.
6.3. Bridged Mono Mode
Bridged Mono Mode straps both amplifier channels together to make a very powerful, single-channel
monaural amplifier. One channel “pushes” and the other „pulls“ equally, doubling the power over that
of either channel alone. Signal is applied to the Channel A input only. Both attenuators are used to
control signal level; in addition both must be adjusted to the same setting.
Either the ¼” (TRS) or XLR
input may be used.
NOTE:
The channel B input connectors (XLR and/or TRS) may be used to „loop thru“ the channel A
signal when in parallel or bridged mono mode.
Use extreme caution when operating the amplifier in Bridged Mono Mode. Never ground either side of
the speaker cable when the amplifier is in Bridged Mono Mode; both sides are “hot”. If an output patch
Panel is used, all connections must be isolated from each other and from the panel. The
recommended minimum nominal load impedance in the Bridged Mono Mode is 8 ohms, which is the
equivalent to driving both channels separately at 4 ohms. Driving bridged loads of less than the
recommended minimums will activate the LRS circuitry, resulting in a loss of power and may also lead
to a thermal protect condition.