SOUND TOWN NIX-A48PRO Professional 4 Channel Power Amplifier User Manual

SOUND TOWN NIX-A48PRO Professional 4 Channel Power Amplifier

IMPORTANT SAFETY INSTRUCTIONS

1. Read all safety and operating instructions before using this product.

2. All safety and operating instructions should be kept for future reference.

3. Read and understand all warnings listed on the operating instructions.

4. Follow all operating instructions to operate this product.

5. This product should not be used near water, i.e. Bathtub, sink, swimming pool, web basement etc.

6. Only use dry cloth to clean this product.

7. Do not block any ventilation openings, it should not be placed flat against a wall or placed in a built-in enclosure that will impede the flow of cooling air.

8. Do not install this product near any heat sources, such as, radiators, heat registers, stove or other apparatus (including heat producing amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The side blade or the third prong are provided for your safety if the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord being walked on or pinched particularly at Plugs, convenience receptacles and the point where they exit from the apparatus. Do not break the ground pin of the power supply cord.

11. Only use attachments specified by the manufacturer.

12. Use only the cart, stand, tripod, bracket, or table specified by the manufacturer or sold with the apparatus.
    When a cart is used use caution when moving cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Care should be taken so that objects do not fall and liquids are not spilled into the unit through the ventilation ports or any other openings.

15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way; such as, power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally or has been dropped.

16. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

17. When the MAINS plug, or an appliance coupler is used as the disconnect device, the disconnect device should remain readily operable.

18. Protective Ground Terminal: The apparatus shall be connected to an AC main socket with a protective earth ground connection.

OVERVIEW

FRONT PANEL

1. Power Switch
   This heavy-duty, rocker-type switch turns on the mains power to the amplifier. When the mains power is applied, there is a three second delay in activation of the unit. This reduces / eliminates the turn on transients associated
   with the system equipment connected to the amplifier and protects loudspeakers.

2. Volume Control
   These controls are used to adjust the input gain of each channel. They determine how loud each channel of the power amplifier will sound for a given input signal level. Maximum input gain is achieved at the fully clockwise setting, and this setting yields maximum mixer/ system headroom. A setting of less than fully clockwise will yield lower system noise at the expense of mixer/ system headroom. Turning the control fully counterclockwise is the off setting. It is always a good idea to power up any new installation at this setting to protect the system loudspeakers.
   When the CH.A&B are bridged, use the CH.A knob to adjust volume. When the CH.C&D are bridged, use the CH.C knob to adjust volume.

3. Power LED
   This indicator illuminates when the AC mains power is being supplied to the amplifier and both channels are operational. If either channel experiences fault conditions, exceeds safe operating temperature limits, or if the
   mains circuit breaker trips, the power LED will be dark.

4. Overload LED (Clip)
   These indicators illuminate when the associated channel has been overloaded. An occasional flickering is acceptable. If LED is lit continuously adjust the level control and reduce the output level of connected sources. Failure to do so may lead to premature failure of your speaker.

5. Protect LED (Faulty)
   These indicators illuminate when the associated channel has problem. It might be short circuit, overheat or other system problems and the amplifier will turn to protection mode and stop working. The amplifier must be turn off when the protect LED lights up.

6. LCD Display
   The LCD displays the signal level of each channel, operating mode and temperature of the amplifier.
   REAR PANEL

7. RESET (FUSE HOLDER)
   The fuse is used to protect your amplifier from different kinds of AC problems. When the amplifier is turned on but no any LED indicator light on, please verify the fuse compartment. If the fuse blows, replace it with another fuse with the same type and rate.

8. INPUT
   Four XLR 3 (female) connectors are provided for signal inputs (Balanced input).

9. LINK OUT
   Four XLR 3 (male) connectors are provided for signal link output.

10. MODE SWITCH: STEREO/PARALLEL/BRIDGE
    A: STE RED MDDE: Allow stereo input from two separate feeds to INPUT A&B, Link out A&B can send out signal separately. OUTPUT A&B speakon will also power out separately.
    B: PARALLEL MODE: Only input mono signal from INPUT A, INPUT B is invalid at this mode. Both Link out A&B can send out same signal. OUTPUT A&B speakon will power out separately for the same signal.
    C: BRIDGE MODE: Only input mono signal from INPUT A, INPUT B is invalid at this mode. Both Link out A&B can send out same signal. Summing both outputs through OUTPUT A speakon connector, OUTPUT B speakon is invalid at this mode.
    The operation mode of CH C&D is the same way as above of CH A&B.

11. SENSITIVITY (0. 77V/1 .OV/1 .44V)
    This switch allows to adjust the input sensitivity. Default setting is 0. 77V (OdB), when the signal source from your audio device are of low gain level, please switch the sensitivity to be 1.0V or 1 .4V to raise the input gain level.
    NOTE: If you need to change the position of both switch (10 & 11 ), the device MUST BE TURNED OFF.

12. SPEAKON OUTPUT

13. Use these NL4 sockets in order to connect the output CHNB/C/D to the loudspeakers. When channel A&B are bridged, only use the OUTPUT A connector for output. When channel C&D are bridged, only use OUTPUT C for output.

14. BINDING POST OUTPUT

15. Use the 4 sets of Black & Red Binding post sockets in order to connect the output CHNB/C/D to the loudspeakers. When using ‘Bridge Mode’, please connect the 2 red binding post sockets for output. Pay attention to positive and negative ends when wiring.

16. MAIN SOCKET INPUT
    Use the incorporated cable in order to connect the device to an adequate main supply point. It’s important to supply the proper AC line voltage (11 OV-130V) to the unit. Do not connect to intermittent or faulty power.

SPECIFICATIONS

How can we help you?
CONTACT OUR US-BASED SUPPORT TEAM

Simple or complex, your questions are important to us. For service, support or more information, please contact the Sound Town support team:

Email: support@soundtown.com

Sound Town Inc.
Los Angeles, California, USA
www.soundtown.com

© 2022 SOUNDTOWN // Features and specifications are subject to change and or improvement without notice.

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