DAD PX Series, User Manual

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- rear panel function description:
1. Channel 1 XLR Input
This XLR input is a balanced input.
2. Channel 1 bypass socket
It provides the same output signal as the input 1signal.
3. Input Sensitivity Selector
Please use this selector to choose input sensitivity among: 0.775V, 1.0V or 1.4V.
4.
- Stereo Mode: the two channels are completely independent.
- Parallel Mode: Signal input only from channel 1, indipendent volumes on both channels and separated
outputs.
- Bridge Mode: both channels work together to make a very powerful, single-channel monaural amplifier.
Input, volume control and output available on channel 1 only. While working in the bridge mode, a related
LED lights up on the rear panel.
Note: Please see the below wiring illustration.
5. 150Hz low-pass filter switch
If the system needs to drive a subwoofer, turn this switch "ON": it filters
the signal below 150Hz.
You can use this amplifier to drive subwoofers, without needing an electronic crossover.
6. Channel 1 SPEAKON output
This is the SPEAKON output. 1+ links to speaker’s positive pole and 1- links to speaker’s negative pole.
In the “Bridge” mode, 1+ links to speaker’s positive pole and 2+ links to speaker’s negative pole.
7. Channel 1 binding post output
This is the binding post output. Red color links to speaker’s positive and black color links to the negative.
In the “Bridge” mode, only the red color links to the speaker’s positive pole.
8. Fuse holder
This fuse holder includes a standard fuse specification inside. It is used to protect the amplifier from
damages. If the amplifier is connected to the power supply but the LED doesn’t light up, please check the
fuse. If you find the fuse broken, after troubleshooting, please replace it with another one having the
same features.
9. Air Entrance
This part is the air entrance. Don't obstruct it.
Note: Do not put your hands or anything else into the holes.
10. Channel 2 XLR Input
This XLR input is a balanced input.
11. Channel 2 bypass socket
It provides the same output signal as the input 2 signal.
12. 30Hz high-pass filter switch
This switch, switches on/off the 30Hz high-pass filter. This filter, eliminates
the frequencies below 30Hz and
does not make the speaker work at resonance frequency, protecting it effectually.
13. Limiter switch
Use this switch to turn the limiter on/off. Switch it on, to prevent output clipping in consequence of a too
high input signal, so you will avoid damages to the amplifier and the speakers.
14. Grounding Selector
If you want to connect the circuit’s ground with the power supply system grounding, in order to lower hum
or noise, you can switch this selector "ON": in this way they will be interconnected.
15. Channel 2 SPEAKON output
SPEAKON output: 1+ links to the speaker’s positive pole while 1- links to the speaker’s negative one.
16. Channel 2 binding post output
This is the binding post output. Red color links to the speaker’s positive pole while black color links to the
Speaker’s negative one. In the “bridge” mode, only the red color links to the speaker’s negative pole.
17. AC cord
This is the line cord. Before plugging it into an AC outlet, please provide it with a power plug suitable to
to the local socket type.
Operation Mode Selector
Please use this switch to choose among the power amplifier operating modes:
Before using the power amplifier, please check out if the power supply is 230V
±10% /50Hz.