Proel HPX8000 - Manuale (Pagina 12)

12
19. Channel 1 LINK
This XLR male connector is connected in parallel with the respective XLR input female connector of Channel 1. This
enables a second unit (e.g. another amplifier) to be daisy-chained to the first. It’s thus possible to feed several amplifiers
using the same signal, forming more powerful sound reinforcement systems.
20. Channel 2 LINK
Same as above but for channel 2 input. It operates only in STEREO mode.
21. INPUT SENSITIVITY switches (no. 1 & 2)
Allows the selection of the amplifier gain. See technical specification at page 3 for details.
NOTE: The fixed GAIN of 32dB is a useful feature to set a complex loudspeaker system using a loudspeaker processor:
in fact having a fixed gain the calculation of filters and limiters are simplified. Consult the manual of your loudspeaker
processor for details.
22. STEREO / BRIDGE / PARALLEL mode selector (switches no. 3 & 4)
Allows the selection of STEREO, PARALLEL or BRIDGE mode operations.
• In STEREO mode each amplifier channel runs indipendently driven by respective input.
• In PARALLEL mode both amplifier channels run together driven by Channel 1 input.
• In BRIDGE mode both amplifier channels run toghether but with channel 1 in phase and channel 2 out of phase, both
channels are driven by Channel 1 input and the output must be taken from "BRIDGE" binding post output.
Yellow LED illuminates when the amplifier is in BRIDGE mode.
NOTE: When the amplifier operates in BRIDGE mode SIGNAL, LIMIT and PROTECT LED indicators illuminate
simultaneously, the signal is sent to both amplifiers from channel 1 input only and controlled by channel 1 level control
only.
23. Channel 1 SPEAKON output
Accepts a male Neutrik Speakon NL4C connector wired in this way:
• PIN 1+ connected to POSITIVE output of Channel 1;
• PIN 1- connected to NEGATIVE output of Channel 1;
• PIN 2+ and 2- NOT connected.
If you connect a standard 2 wire cable (1+/1-), you run to the speaker the amplified output of the signal applied to channel
1 input.
Always connect a loudspeaker with a minimum impedance of 2 ohm or more.
NOTE: Use only loudspeaker enclosure cables, never signal cables, i.e. those normally used for microphones, instruments
and audio equipment in general.
24. Channel 2 SPEAKON output
Accepts a male Neutrik Speakon NL4C connector wired in this way:
• PIN 1+ connected to POSITIVE output of Channel 2;
• PIN 1- connected to NEGATIVE output of Channel 2;
• PIN 2+ and 2- NOT connected.
This is the amplified output of the signal applied to channel 2 input if the amplifier is set in STEREO mode or the signal
applied to channel 1 input if the amplifier is set in PARALLEL mode.
Always connect a loudspeaker with a minimum impedance of 2 ohm or more.
25. Channel 1 BINDING POST output
Accepts a couple of unsheat wires (see the suggested cables at page 4 and the connection at page 5):
• RED terminal + connected to POSITIVE output of Channel 1;
• BLACK - connected to NEGATIVE output of Channel 1;
Always connect a loudspeaker with a minimum impedance of 2 ohm or more.
26. Channel 2 BINDING POST output
Accepts a couple of unsheat wires (see the suggested cables at page 4 and the connection at page 5):
• RED + connected to POSITIVE output of Channel 2;
• BLACK - connected to NEGATIVE output of Channel 2;
This is the amplified output of the signal applied to channel 2 input if the amplifier is set in STEREO mode or the signal
applied to channel 1 input if the amplifier is set in PARALLEL mode.
Always connect a loudspeaker with a minimum impedance of 2 ohm or more.
27. BRIDGE BINDING POST output
When the amplifier is used in bridged mono mode, use the two red binding posts to connect your single speaker output.
Accepts a couple of unsheat wires, wired in this way: