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Guided Tour - Rear Panel
1: Fan - This variable-speed fan provides vital cooling to your SX Series (the hotter the amp gets, the faster the fan blows!). Make
sure that both the front and rear panels are kept free of all obstructions and that cool, fresh air is accessible at all times. Also, try
to ensure that the SX Series is used in a dust-free environment.
2: Input connectors - Connect incoming signals to these electronically balanced Combination connectors, using either XLR or
1/4" TRS (Tip/Ring/Sleeve) plugs, wired as follows: Pin 2 (or Tip) hot, Pin 3 (or Ring) cold, and Pin 1 (or Sleeve) ground. We recom
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mend the use of balanced three-conductor cabling wherever possible (unbalanced two-conductor 1/4" plugs can also be insert
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ed into these inputs, but you’ll get better signal quality and less outside noise and hum if you use balanced lines). The SX Series
accepts input levels of any strength but needs at least +4 dBu to achieve maximum power. Stereo signals should be connected
to both the Channel 1 and Channel 2 input jacks; however, when operating the SX Series in Bridge or Parallel modes, use the
Channel 1 input jack only. See page 8 in this manual for more information about Parallel mode and pages 9 and 10 in this manual
for full interconnection instructions.
3: 5-way Binding Post - Use these to connect each channel of the SX Series to 4-ohm or 8-ohm loudspeakers. Be sure to con
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nect the loudspeaker correctly, with the red (+) terminal normally connected to the positive input of the speaker and the black
(ground) terminal normally connected to the negative input of the speaker. See page 8 in this manual for more information
about Bridge mode and pages 9 and 10 in this manual for full speaker connection instructions.
4: Speakon™ output connectors - Alternatively, you can use these to connect each channel of the SX Series to 4- or 4-ohm
loudspeakers. See page 8 in this manual for more information about Bridge mode and pages 9 and 10 in this manual for full
Speakon™ connector wiring and interconnection instructions.
5: Circuit Breaker - This circuit breaker will trip if there is a fault with the mains voltage or if maximum output is exceeded (very
highly distorted). Push it in (once only!) to restart the amplifier after a short rest period.
6: Bridge / Stereo / Parallel switch - For normal operation, place this three-way switch in its center (“STEREO”) position. When
placed in its right (“PARALLEL”) position, the signal arriving at the Channel 1 input only is routed to the power amplifiers of both
Channel 1 and Channel 2 (the Channel 2 input is ignored). When placed in its left (“BRIDGE”) position, the signal arriving at the
Channel 1 input only is again routed to both power amplifiers (again, the Channel 2 input is ignored), but the two power ampli
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fiers are bridged together. For more information, see the “Bridge and Parallel Modes” section on page 8 in this manual and the “SX
Series Connections” section on pages 9 -10 in this manual. WARNING: Due to the extremely high power output of the SX Series
when used in Bridge mode, be sure to use only loudspeakers sufficiently rated to handle the resultant wattage (in Bridge mode,
these must be 4 or 8-ohm speakers).
7: AC input - Connect the supplied heavy-gauge 3-pin “IEC” power cable here.
ENGLISH
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