Proel SW118P - Manuale (Pagina 13)

13
SW118A - ACTIVE VERSION INSTRUCTIONS ( FIG. 4 / 5 / 6)
1. LINE IN (combo XLR-JACK input)
This is a female combo connector, which accepts a XLR or a JACK plug from almost any type of equipment with a
balanced or unbalanced outputs. The XLR input is wired as follows:
Pin 1 = shield or ground
Pin 2 = + posi ve or "hot"
Pin 3 = - nega ve or "cold"
The JACK input is wired as follows:
Tip = + posi ve or "hot"
Ring = - nega ve or "cold"
Sleeve = shield or ground
When connec ng an unbalanced signal, wire them as follows:
Pin2 / Tip = + posi ve or "hot"
Pin 1-3 / Sleeve = shield or ground
NOTE: whenever possible, use always balanced cables. Unbalanced lines may also be used but may result in noise over
long cable runs. In any case, avoid using a balanced cable for one channel and an unbalanced one for the other.
2. LINK LEFT (XLR output balanced)
This is a male XLR connector, it is connected in parallel with the respec ve line input, so the LINK is wired as the input.
Connect these to the inputs of other powered speakers to make an array.
3. OUT LEFT (XLR output balanced)
This is a male XLR connector, it provides a balanced line-level signal. This signal is fi ltered with an high-pass fi lter to
connect a sat speaker. This output is wired as follows:
Pin 1 = shield or ground
Pin 2 = + posi ve or "hot"
Pin 3 = - nega ve or "cold"
4. INPUT RIGHT (combo XLR-JACK input)
Same as above. Use both inputs and outputs when connect a stereo system to a single subwoofer (1 sub + 2 sat). In the
case of mono system (1 sub + 1 sat for each channel) you can use le or right input without dis nc on.
5. LINK RIGHT (XLR output balanced)
This is a male XLR connector, it is connected in parallel with the respec ve line input, so the LINK is wired as the input.
Connect these to the inputs of other powered speakers to make an array.
6. OUT RIGHT (XLR output balanced)
Same as above. Use both inputs and outputs when connec ng a stereo system to a single subwoofer (1 sub + 2 sat).
In the case of mono system (1 sub + 1 sat for each channel) you have to use the same channel used for input: le or
right.
7. GND LIFT switch
This switch li s the ground of the balanced audio inputs from the earth-ground of the amplifi er. If you have HUM noise
problems on one or more loudspeaker try to change the posi on of these switches (o en all up or all down for all the
amplifi ers in the system). Please note that to have an eff ect all cables must be balanced.
8. FILTER 80 / 125 Hz switch
Use this switch to set the crossover frequency at 80 Hz or 125 Hz for the internal fi lter and for the OUT LEFT and RIGHT
connectors. Choose the crossover frequency by your taste or music genre.
9. LEVEL control
Rotary level control: it a enuates the level of the signal sent to the subwoofer speaker. The a enua on ranges from
“0” fully closed (the signal is completely a enuated) to “10” fully open, nominal level (the signal is not a enuated in
any way, so is fed to the internal amplifi er at the same level at which it arrives on input).
10. SIGN/CLIP indicator
GREEN LED illuminates to indicate the presence of the signal at the built-in amplifi er input.
RED LED illuminates when the internal amplifi er's output is limited. When this LED fl ashes reduce the input signal
level.