F I R S T- S e r i e s
©
Copyright LOTRONIC 2018
Page 5
A M P L I F I E R I N P U T C O N F I G U R AT I O N
Full-Range Models
14
4
5
7
13 6
15
1
2
16
3
11
12
4
5
7
1
6
3
11
12
4
5
7
1
6
3
9
8
10
FIRST
-
SA10DSP2
9
10
8
9
10
8
FIRST
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SA12DSP2
FIRST
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SA15DSP2
FIRST
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SA215DSP2
Subwoofer Models
1. LINE / MIC IN
Balanced input for the connection of signal sources like mixing
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consoles, instruments or microphones. Connections can be
established using 1/4 inch TRS or XLR connectors.
4
Volume control for adjusting the individual inputs’ level. The 12 o'clock
5
position is unity gain (no gain or attenuation), the range to the left of
1
3
6
zero (0) is for adjusting line level sources, and the range to the right of
Zero (0) is for adjusting microphone levels. LINE and mic input level
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controls are available for both INPUT 1 and INPUT 2.
2. AUX/BT Input
A CD, IPhone or Bluetooth signal for AUX/BT in or Input 2 channel
input.
3. MIX OUT
XLR output sends the mix of both input signals to another loudspeaker or
subwoofer. INPUT LEVEL controls the signal level to OUTPUT. The
MASTER VOL or DSP control
setting does not affect OUTPUT.
4. LIMIT
(Automatic amplitude limiter):
Automatic amplitude “LIMIT” LED; when the audio signal reaches the
dangerous threshold for the transducers, this circuit will automatically
intervene by reducing the amount of signal in order to protect the
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speaker, avoid losing roue and despicking distortion as well; the
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8
FIRST-SA12SDSP2
FIRST-SA15SDSP2
FIRST-SA18SDSP2
activation of these protections is recognized via the “CUP” Leds
Lighting up.
5. SIGNAL
LED signal to indicate the input signal to “IN XLR SOCKET”. Adjusts
the volume of the main mix.
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