UNiKA A6M4 Powered Mixer User Manual

User Manual
A6M4/A8M4/A10M4
POWERED MIXER
Made in Taiwan

Index

1.  Important Precautions
2. Introduction
3. Features
4. Front Panel
5. Rear Panel
6. Specifications

IMPORTANT PRECAUTIONS

RISK OF ELECTRIC SHOCK
DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

PRECAUTION: To reduce the risk of electric shock, do not remove the cover, there are no user-serviceable parts inside, leave all maintenance to qualified technicians.
WARNING: To prevent electric shock or fire hazards, do not expose this appliance to rain or moisture. Do not throw water or any other liquid on or into your unit. Read all warnings in the operating instructions before use.

This symbol is intended to alert the user to the presence of hazardous voltage that is not insulated from the box and may be of sufficient magnitude to constitute a risk of electric shock.
This symbol is intended to alert the user to the presence of important operating and maintenance instructions in the documentation that comes with the product.

INTRODUCTION

INTRODUCTION: Congratulations and thank you for purchasing A6M4/A8M4/A10M4 powered mixer. These powered mixers are a representation of UNiKA’s continuing commitment to producing the best and highest quality audio products at an affordable price. These powered mixers are designed to offer excellent sound, high reliability combining versatility and high power in all its models. Versatile for capacity from 6 to 10 channels, inputs for a CD player, 7-band graphic equalizer ± 12 dB, the maximum output power of 420W RMS (@2ohm), and auxiliary inputs and outputs. Please read and understand this manual completely before attempting to operate the unit.

UNPACKING: As part of our quality control, each powered mixer has been thoroughly tested and has been shipped in perfect operating condition. Carefully check the shipping carton for damage that may have occurred during shipping. If the carton appears to be damaged, carefully inspect your unit for any damage and be sure all accessories necessary to operate the system have arrived intact. In the event, the damage has been found or parts are missing, please contact your dealer for further instructions.

FEATURES

• 10x XLR balanced low impedance microphone inputs (A10M4)
• 8x XLR balanced low impedance microphone inputs (A8M4)
• 6x XLR balanced low impedance microphone inputs (A6M4)
• 10x 6.3mm TRS balanced high impedance line inputs (A10M4)
• 8x 6.3mm TRS balanced high impedance line inputs (A8M4)
• 6x 6.3mm TRS balanced high impedance line inputs (A6M4)
• Tone control per channel
• Master output level controls, digital echo effects, and effect level control
• 7-Band graphic equalizer on the master output
• Assistants on CD or Cassette
• Playback volume control channel
• Recording output
• Digital echo effects Output and return
• Protection systems against power output short-circuit, and overloads
• Cooling system with one variable speed fan
• MP3 Player/FM Tuner, LCD display with programmable memories Infrared remote control
• SD card slot and USB type-A port

FRONT PANEL

1. LOW IMPEDANCE CHANNEL INPUT (LOW Z)
   Connect a microphone or a similar source using an XLR plug.

2. HIGH IMPEDANCE CHANNEL INPUT (HIGH Z)
   Connect an instrument or a similar source to the console using a ¼ ” TRS phone plug of three terminals.

3. CHANNEL GAIN CONTROL (GAIN)
   It allows adjusting the level of signal that each of the channels contributes to the master section helping to mix and balance the signals of each channel correctly. It is recommended that this control be less than 60% of its travel (thus gaining a unit gain) before increasing the gain of the master control (7) in order to obtain the best quality and the lowest noise level in the sounds reproduced by the horns.

4. CONTROL OF CHANNEL’s HIGH FREQUENCIES (HIGH)
   It allows adjusting the intensity of the acute sounds of each channel independently affecting mainly the brightness of the same. In the central position, the response will be flat (not accentuated or attenuated). Turning the control to the left attenuates the high frequencies and turning to the right is accentuated. The control of high frequencies covers a range ± 12dB @ 10 kHz.

5. CONTROL OF CHANNEL’s LOW FREQUENCIES (LOW)
   It allows adjusting the intensity of the bass sounds of each channel independently. In the central position, the response will be flat (not accentuated or attenuated) by turning the control to the left the low frequencies are attenuated, turning it to the right are accentuated. The low- frequency control has a range of ± 12dB @ 80Hz and mainly affects sounds like the guitar bass or bass drum.

6. CONTROL OF CHANNEL EFFECTS (FX)
   It allows sending the signal of any channel independently to an external effect or to the digital echo module built into the unit. In the extreme left position, the signal that it provides will be null. Turning the control to the right increases the signal.

7. MASTER CONTROL OF GAIN (GAIN)
   It adjusts the level of the signal that it injects to the internal amplifier. It is recommended to first set the individual gain controls of each of the main channels at least 60% of their travel, thus obtaining a unit gain before increasing the main gain in order to obtain the best quality and the lowest sound level in the sounds reproduced by the high-frequency horns.

8. AUXILIARY INPUT (AUX. IN) – A10M4 and A8M4 model
   It allows you to input an external signal such as a CD player, etc. with 225mV line output through the use of a ¼ “monaural phone plug. The level of this signal will be determined by the effect gain control (level).

9. CONTROL OF AUX-IN & EXTERNAL EFFECT RETURN LEVEL (FX LEVEL) – A10M4 and A8M4 model
   It acts on the auxiliary signal input IN and on the input signal of FX return. These signals can be equalized and injected directly into the master stage.

10. RETURN OF EFFECTS (FX RETURN)
    External Effect signal input through the use of a ¼ “monaural phone plug, the input level will also be determined by the Effect level control of the master section.

11. SIGNAL OF INPUT CHANNELS THAT SENDING TO THE EXTERNAL EFFECT UNIT (FX SEND)
    It allows you to extract independent signals from each channel to be injected into an external effects processor using a ¼ “monaural phone plug. The magnitude of the signal is determined by the effective control of each channel selected to be sent to the processor.

12. POWER ON THE LIGHT INDICATOR (ON)
    It will illuminate when the switch on the back of the console is enabled in position switched on.

13. CLIP INDICATOR (CLIP)
    Illuminates when the amplification stage of the console is causing a level of audio distortion. To avoid such distortion, reduce the output level with the master gain control of the master section, or with the level controls of each input channel.

14. RECORDING OUTPUT (TAPE OUT)
    It delivers the audio signal coming from the mix of all input channels to an external audio recorder, this signal is sent from the pre-equalizer of the master section.

15. 7-BAND GRAPHIC EQUALIZER (EQ)
    Master output Graphic Equalizer, it allows better sound quality by accentuating or attenuating frequency signals, the frequency bands of 60Hz, 150Hz, 400Hz, 1KHz,  2.5KHz, 6.5 kHz, and 15KHz in an adjustable range of +/- 12dB.
    DIGITAL ECHO EFFECT

16. DELAY TIME CONTROL (TIME)
    It controls the time elapsed between the repetitions of the signal obtained from any of the input channels. Turning to the minimum position gives the reverb effect. The operating range is between 20 and 160 milliseconds.

17. DEPTH CONTROL (DEPTH)
    Adjusts the number of times the original sound from any of the main channels is repeated. Turning to the maximum position gives an echo effect. The Depth controls affect the number of delayed signals that are mixed in with the original signal, higher depth settings make the delayed copies louder than the original signal.

18. ECHO DIGITAL MODULE OUTPUT LEVEL (LEVEL)
    Controls the sound effects signal level that is provided by this module to the master output section of the console. In the minimum position, the output of this module is null canceling the effect.

19. USB GAIN CONTROL (USB LEVEL) Controls the volume level of the included MP3 player.

20. MP3 PLAYER (USB INPUT)
    Input connector for USB memory devices for the internal MP3 player. To control the player use the included remote control.

21. MP3 PLAYER CONTROLS : ****Play / pause; : Next track; : Previous track

22. IR Infrared receiver for remote control.
    REAR PANEL
    

23. MAIN SIGNAL DEVIATION (LOOP SEND)
    It allows to obtain a sample identical to the signal coming from the master stage and that is directed towards the internal amplifier. It can be sent first to signal equalization processes to return loopback for additional power amplifier power through the use of a ¼ “monaural type phone plug.

24. MAIN SIGNAL RETURN (LOOP RETURN)
    It allows interrupting the passage of the main signal just between the master stage and the power amplifier to replace it with that obtained from any external processing such as equalization. It can also be used to inject a completely different signal from the master stage (such as that of a monitors system) to the power amplifier included in the mixer while the main signal is drawn from the loop output sent. The master amplifier circuit is switched off automatically when a ¼ “monaural type phone plug is inserted.

25. SPEAKER OUTPUTS (OUTPUT)
    For connection, a ¼ “monaural phone plug is used. It is advisable to use the correct caliber on the connecting cable to your speakers (do not use instrument cable). The internal connection of the output connectors is in parallel and the combined minimum impedance in the two output connectors must not be less than 2Ω.

26. OUTPUT FUSE (OUTPUT FUSE)
    It has an electronic overload protection system in the output stage of the power amplifier. The system will disconnect the speakers whenever there is an improper condition caused by a short circuit or an impedance of less than 2Ω in the power output. In addition, its console uses a fuse in series between the power output and its speaker system. If necessary replace it with an equal one.

27. AC POWER SWITCH (POWER)
    Allows you to control the on / off status of the complete unit which will be shown by the ON indicator located on the front of the console. When the console is turned on, the transient protection system is automatically activated at the output, momentarily disconnecting the speakers to avoid any damage and then resetting seconds. Also, the system will be activated just after the switch is brought to the off position thus avoiding the noises produced by the discharge of the source on the horns.

28. INPUT FUSE (A.C. FUSE)
    For greater protection in the power supply, the console uses an American fuse of slow fusion. If necessary replace it with another of the same type.

29. AC POWER INPUT
    IEC AC Power inlet connector, plug this cable into a standard 220V wall outlet. Be sure that supplied voltage matches that of the required voltage of this unit. Never plug this unit into a wall outlet that does not match the required voltage, serious damage may occur to the unit.

SPECIFICATIONS

Unlike Electronic Co., Ltd.
www.unika.com.tw
6F, No.168, Xin-Hu 2nd Rd.
Nei-Hu District, Taipei City. 11494.
Taiwan, Republic of China.
+886 2 27933017
+886 2 27928264
unika@unika.com.tw

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