SPRM 306C Mixer Preamplifier

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  • General Features
  • Technical Specifications
*Full digital function selective
 
*3 microphone inputs with separate volume control
 
*Music broadcast output and control to telephone switchboard
 
*Special warning gong with 4 beats before announcement
 
*Music tone control & Announcement tone control
 
*On-off switch and light
 
*Auto-gong & Auto-fader (with Announcement sound
 
*Automatically mute the music stream)
 
*12 digit Vu-meter
 
*Protection signal led

 

Inputs; 2 mic. 600ohm 1 mV (60dB)
2 line input : 500ohm 100mV
CD, Tape, Tuner 12 kohm 80mV
Frequency band; 60-18kHz.
Tone control; Bass 10dB 100Hz.
Treble 10dB 12kHz.
Output Level; 25ohm - 750mV
Supply Voltage (AC) 200-240V / 50-60Hz.
Supply Voltage (DC) 12V, 24V
Size; 125*274*480mm
Weight; 5.8 kg
Output Power 200W
Output Voltage 70V, 100V
THD < 0.1

It is the unit where the selection of microphone and music sources, volume and tone controls are made digitally. This the device activates a special gong to alert before the announcement. Music, sensitive to human voice, is automatically pre the set level and waits for the announcement. At the end of the announcement, the music continues at the previous level.

 
1. The "ON/OFF" switch of the SPRM 306C Mixer Amplifier is turned on. It is observed that the led light is on.
 
 2. The desired music source is activated by pressing the touch button of the music source TAPE, CD, TUNER. It is observed that the led light of the selected music source lights up.
The music broadcast reaches the broadcasting area.
 
 3. The volume level of the selected music source and whether the music broadcast signal reaches the Power Amplifiers is checked by flashing the leds on the led scale.
 
 4. The tone controls of the music broadcast BASS, TREBLE and VOLUME settings are made. 
 
5. Whichever channel the microphone is connected to (CH1-CH2-CH3-CH4), the microphone is activated by pressing the touch button of that channel. It is observed that the led light of the selected channel is on.
 
 6. The volume level is adjusted from the pot of the channel to which the microphone is connected.
 
 7. "TREBLE" and "BASS" tone settings are made according to the person who will make the announcement.
 
 8. Protection LED lights up when the fuse automatically blows in case of short circuit, overload and overheating. In this case, the device should be turned off from the POWER Switch and the service should be notified.
 
 9. When an announcement is wanted to be made while music is playing, the music volume automatically decreases to the set level sensitive to human voice and waits for the announcement. At the end of the announcement, the music continues at the previous level.