Proel X30TB - Manual (Page 11)

11
english
CONNECTION and OPERATING instructions for X80A
10. MIC/LINE IN (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 output. The XLR input is wired as follows:
Pin 1 = shield or ground
Pin 2 = + positive or "hot"
Pin 3 = - negative or "cold"
The JACK input is wired as follows:
Tip = + positive or "hot"
Ring = - negative or "cold"
Sleeve = shield or ground
When connecting an unbalanced signal, wire them as follows:
Pin2 / Tip = + positive 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.
11. LINK (XLR output )
This XLR connector is linked directly to the input signal and it is able to re-send the signal to other
speakers.
12. GND LIFT switch
This switch lift 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 speakers try to change the position of these switches.
13. HIGH control
This control gives you up to 6 dB boost or cut at 8 KHz with a "SHELVING" curve shape. Use it to add or
reduce the sound "clarity" and "brightness".
14. LOW control
This control gives you up to 6 dB boost or cut at 100 Hz with a "SHELVING" curve shape. Use it to add or
reduce the sound "punch", or to reduce the low frequency rise when the speaker is set near wall corners or
wall-ceiling corners.
15. LEVEL control
Rotary level control: it attenuates the level of the signal sent to the internal amplifi er. The attenuation ranges
from “0” fully closed (the signal is completely attenuated) to “10” fully open.
16. MIC / LINE switch
This switch control adjusts the gain of the XLR input varying the sensitivity between MIC, suited to connect
a microphone, and LINE, suited to connect a device with high level output like a MIXER, a CD player etc.
17. SIGN/LIMIT indicator
GREEN LED illuminates to indicate the presence of the signal at the amplifi er input.
RED LED illuminates when the internal amplifi er's output is limited. When the RED color LED fl ashes reduce
the input signal level.
18. ON indicator
GREEN LED: when lighted indicates that the amplifi er has been turned on and AC power is available.
19. AC~ socket
Here’s where you plug in your speaker’s mains supply cord. You should always use the mains cord supplied
with the speaker. Be sure your speaker is turned off before you plug the mains supply cord into an electrical
outlet.
20. POWER switch
Speaker is "ON" when the switch is in the "I" position, use this switch to set the speaker power to ON or
OFF.
NOTE: When you shut down your equipment, turn off the speaker fi rst.When powering up, turn on
the speaker last.