1. INTRODUCTION
Thank you very much for expressing your confidence in our product by purchasing 500W/400W/300W/200W professional
Power amplifier. The series of products are simple, conventional amplification facilities, which are based on many years
R&D experience and employ several advanced technologies, including clever clip limiter, short circuit protection, DC protection
and thermal protection and so on, these features can protect the amplifier from damage and /or overload. Besides,
500W/400W/300W/200W professional power amplifier also provided with following smart features:
Robust and compact design
Standard 1U rack size
Easy to operate front/rear panel control interface
Each channel provides SIGNAL LED, CLIP LED and POWER LED indicators
Volume control for each channel
Electronically balanced XLR, 6.3
jack and RCA input connectors
Binding post and Speakon output connectors
Protection circuit design (DC protection, short-circuit protection, thermal protection, overload protection, clip limiter)
Variable-speed low noise fan ensures high reliability even under demanding conditions
Light-weight for easier racking and shipping
In short, 500W/400W/300W/200W power amplifier is the optimum combination of performance, reliability and
value in an
ultra-light weight package, all these features make it well suitable for small venue, studio/broadcast, recording and general
applications.
This manual covers the four models: 500W, 400W, 300W, 200W power amplifiers. Please read this manual
carefully before
use, in such a way, you will get the best out of the amplifier and enjoy long and trouble-free operation
10. CLIP switch
Set this switch at ON position to activate the limiter circuit on output stage, once the output signal exceeds the rated power, the
CLIP limiter will compress the output signal to normal for protecting your speaker system from damage.
11. Ventilation
The ventilation is used to vent the heat. The built-in variable speed fans, serve to cool the internal temperature of amplifier for
reducing the noise.
Note: The fan operates at initial power-on, and the fan speed will vary automatically as the internal temperature changes.
7. AC Inlet socket
Standard 3-conductor type IEC power connector, serve to connect the amplifier to the mains supply via the enclosed power cord.
Please make sure the voltage available in your country and how the voltage for your amplifier is configured before attempting
to connect the mains supply.
Note: To prevent the risk of shock or fire hazard, always be sure that the amplifier and all associated equipment is properly
grounded.
8. Audio INPUT connectors
All models provide electronically balanced XLR (F), 1/4
phone jacks and unbalanced RCA connectors, designed for connection
of external audio signal.
For satisfying various connection requirements, it use low-noise, electronically balanced/unbalanced circuit, which can accept
balanced and unbalanced audio signal and offer a very wide dynamic range capable of handling virtually any signal level.
9. Audio OUTPUT connectors
Professional binding posts and Speakon connectors, serve to output the powered signal to external loudspeakers.
Note: Please make sure that the impedance does not fall below this specified impedance.
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Summary of Contents for DX400
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