FONESTAR SM-3512U Manual De Instrucciones página 2

EN
DESCRIPTION
Models SM-3512U and SM-3520U are professional stereo mixers with 12 and 20 channels respectively and
they are suitable for live applications, PA for musical groups, boardrooms, schools, churches, etc.
Each input channel has a 3-band equalizer, gain, high pass filter, 2 aux send, balance and output channel
allocation and cueing. It incorporates +48 V Phantom in the microphone inputs, selectable. It also includes
MP3 player with USB port for USB memory connection and SD card reader.
Furthermore, it has recording, headphone, monitor, main outputs and an alternative sub-mix output.
CONTROLS AND FUNCTIONS
FRONT PANEL
1.- MIC: balanced microphone input, female XLR connector. This connector has
selectable +48 V phantom power supply. The pre-amplification circuit provides
gain without distortion and with a low level of noise.
2.- LINE: balanced line input, 6.3 mm stereo jack connector. Unbalanced signals
can also be connected.
3.- LOW CUT: pressing this button activates the high pass filter with a steep
attenuation slope. The cut off frequency is 75 Hz. This filter is used for reducing
electric noise and background noise on stages when microphones are used.
4.- GAIN: input gain control. For the microphone input, the input sensitivity can
vary between -10 and -60 dB and for the line input between +10 and -40 dB.
5.- EQ: tone controls. Equalizer that adjusts the bass, mid and treble level in the
corresponding channel. Controls with a gain of ±15 dB:
HIGH: low pass filter with cut off frequency of 12 kHz.
MID: band pass filter with central frequency of 2.5 kHz.
LOW: high pass filter with cut off frequency of 80 Hz.
6.- AUX 1: volume control for sending the pre-fader to the AUX bus.
7.- EFX 2: volume control for sending the post-fader to the EFX bus.
8.- PAN (BAL): control that adjusts the mono channel stereo image or the stereo
channel balance in the final mix.
9.- MUTE ALT 3-4: button for selecting between sending the channel output to
bus from the MAIN mix or to the ALT 3-4 sub mix bus. In this case, it mutes the
signal in the MAIN bus.
10.- CLIP: LED indicator that lights up when the input signal level is too high. In this
case, the input level is decreased using the GAIN control until the indicator goes
off or only lights up occasionally.
11.- LED indicator that lights up when the PFL control is active.
12.- PFL: pre-fade listen. Sends the signal to the PFL bus and allows activation of
the monitoring of the channel signal through the headphone output and the
CONTROL ROOM output. To see the PFL bus level in the STEREO LEVEL
DISPLAY level LED indicator place the MAIN/PFL button in the PFL position.
13.- FADER: sliding volume control for the output signal from the channel that is
sent to the MAIN mix bus or the ALT 3-4 sub mix bus, according to the selection
made with the MUTE/ALT 3-4 control.
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