A
C INPUT
115/230V 60/50Hz
Amplifier controls
The amplifier has a combination of controls and
connectors to ensure the most versatile loudspeaker
system.
Full-Range Loudspeaker Control
The full-range loudspeaker control menu selections are
available for the ZL-12M and ZL-15M.
ZL-12M and ZL-15M amplifier panel
1. LINE/MIC INPUT
These balanced inputs accept a standard XLR (female)
connector and a 1/4 “ TRS phone jack connector. A range of
signals from microphones, audio mixing consoles, and
electronic musical instruments may be connected here. The
sensitivity of this input is controlled by the LINE/MIC SWITCH.
This input does not provide phantom power.
does not provide phantom power.
2. LINE/MIC SWITCH
The selector must be in the "MIC" position for MIC inputs. The
MIC setting should only be used if a microphone is connected
directly to the in MIC/LINE input.
CAUTION:
Using the MIC setting for other purposes may
introduce distortion. The line input the selector must be in the
"Line" position. The LINE setting should be used for most
other audio inputs.
3. INPUT LEVEL KNOB
Sets the sensitivity of input A and B channel which controls the
signal level sent to the amplifier and the mix out .
4. MP3 LEVEL KNOB
Turn this knob to adjust the input volume of USB flash or
Bluetooth input.
5. MASTER KNOB
To adjusts master volume of all inputs (the Mix out will not be
controlled by this knob.)
6. EQ KNOB (TREBLE MID & BASS)
Use these knobs to adjusts the 3 different frequencies of the
speaker.
TREBLE:
Increases or decrease the high frequency for
MIC/LINE/MP3 sources at a range between -10dB to +10dB.
MID:
Increases or decrease the middle frequency for
MIC/LINE/MP3 sources at a range between -10dB to +10dB.
BASS:
Increases or decrease the Low frequency for
MIC/LINE/MP3 sources at a range between -10dB to +10dB.
7. MIX OUT
Output XLR is a mix of channels A/B and MP3 player. Produces
a line-level output signal that is Post Gain. Any adjustments
made to the gain of these A/B channel and MP3 affects this
output signal. It works as signal output to link the other active
speaker.
8. AC INPUT
Standard IEC AC input connector. 230V/5A AC fuse.
9. POWER SWITCH
Will illuminate when power is applied to the unit and the
ON/OFF switch is in the ON position.
10. VOLTAGE SELECTOR
Allows user selection of different local voltage ratings
115V/60Hz - 230V/50Hz.
11. POWER LED (BLUE)
When power is applied to the unit and the ON/OFF switch is
in the ON position this LED will be illuminated.
12. LIMITER LED (RED)
This LIMIT LED illuminates when the output power is in
overload. The red clip LED indicates that limiting has taken
place to protect and avoid damage to the amplifier or
loud-speaker. Continuously over driving the system will cause
distortion and may lead to premature failure to the speaker
system. If the red limit led is on when both LEVEL controls are
at minimum, your loudspeaker requires service by qualified
professional.
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