DA-4PM/0F2 version 1.0
7
Chassis for 4 power amplifiers
F2 and F2DC series
DA-4PM/0F2
AMPLIFIER 4
INPUT
AMPLIFIER 3
INPUT
AMPLIFIER 2
INPUT
AMPLIFIER 1
INPUT
The connection between pin 8 and the shield of the RJ45 connector to the amplifier GND, and the
connection between the amplifier GND and the DA-4PM/0F2 chassis, is made through the internal
jumpers JP1 and JP2. If the installation requires it due to noise caused by ground loops, you can
separate these connections by modifying the position of these jumpers. See figure 7 on the next
page.
4.2.
Audio input connection
The audio input uses an 8-pin RJ45 connector marked INPUT. Each amplifier module has its own input connector. The inputs are
NON-balanced with a sensitivity of 0dB (775 mV RMS). For connection use CAT5e FTP cable or higher.
The signal applied to the input will attack the corresponding amplifier and will be output through the SPEAKERS OUTPUT.
If the amplifier is in STANDBY mode, the signal applied to the INPUT will not attack the corresponding amplifier until the PRIORITY
contact of that input is activated (connecting contacts 6 and 8 of the RJ45 INPUT connector). The activation of the priority contact
deactivates the STANDBY mode.
If the amplifier has the RSAP-F2 accessory module, the signal applied to the INPUT will not attack the corresponding amplifier until
the INPUT PRIORITY contact is activated (connecting contacts 6 and 8 of the RJ45 INPUT connector).
The connector has two LEDs: a green PRIORITY LED, which lights up when the input priority contact is activated, and a yellow LED
indicating STANDBY (steady LED) or ALARM (flashing LED). The ALARM indication can mean an overload or short-circuit in the
speakers line, or excessive power amplifier temperature).
RJ45 PINOUT
Pin 1:
AUDIO H (HOT) INPUT.
Pin 2:
GND (or AUDIO C if it is a balanced signal).
Pin 3:
+15VDC POWER OUTPUT. This output is used for amplifier supervision or to power low-power devices (maximum
current supplied is 140mA).
Pin 4:
Not used.
Pin 5:
Not used.
Pin 6:
PRIORITY INPUT CONTACT. The priority is activated by connecting this contact to GND (pin 8 of the RJ45 connector). If
the amplifier is in STANDBY, activating the priority contact causes the amplifier to exit STANDBY mode, even if the CT IN
STANBY activation contact is still activated.
Pin 7:
Open collector OUTPUT CONTACT (figure 6). ON indicates amplifier in STANDBY mode.
Flashing at 1 second intervals indicates amplifier ALARM (short circuit in the loudspeaker
line or over temperature in the power amplifier).
Pin 8:
Shielding:
JP2
JP1
Figure 5
LED Green
PRIORITY indicator
LED Yellow
Fixed ON: Amplifier in STANDBY mode.
Flashing: Indicates ALARM due to short-circuit in
the speaker line or over-temperature in the power
amplifier.
Figure 6