Beta Three UA880 Professional Power Amplifier User Manual

Beta Three UA880 Professional Power Amplifier

DEAR CUSTOMERS

Please carefully read and strictly follow the user’s manual when you use UA professional amplifier. If you have any questions, please contact the local dealer.

NOTES

• High voltage inside the equipment. Do not open the cover. Ask for help from professionals when need servicing.
• Please do not expose the equipment in the rain or moisture.
• Keep adequate ventilation, do not block the port.
• Be sure the voltage of this equipment complies with the local industrial voltage. Please put off the power plug if unused for a long time.
  Please connect the rated load. Never work under the overload for a long time.

Symbols:

• The equilateral triangle with a lightning bolt warns the user of dangerous voltage levels localized within the cabinet.
• The equilateral triangle with the exclamatory marks means the important operation on the user’s manual.

FEATURES

UA series is an amplifier with big power and excellent performance. It can meet different audio avenues.

1. Big power, dynamic energy;
2. Innovative heat sink structure and high-quality heat sink fan assure reliable working for a long time;
3. “loading impedance temperature-power-running voltage” can be controlled alternately, Speed of Fan is automatically adjusted by temperature. When load is too low or the temperature is too high, the equipment can adjust the power supply and lower the impedance of power, which improves sound quality and protect the equipment better. The reliability will be improved remarkably;
4. Low distortion;
5. High slew speed, outstanding sound quality and high transparent;
6. Low noise:S/N>108dB(A Weight);
7. 20Hz~20KHz <+0/-0.25 dB;wide frequency band;
8. Small dimension, 2U rack mounting.
9. UA2002, UA1332, UA662, and UA332 are specially designed for low loading impedance, and can work for a long time under 2Ω.

PARAMETERS-UA2000

Rated Power

| Stereo mode| 8Ω| 1000W
---|---|---|---
4Ω| 1600W
Parallel mono mode| 8Ω| 1000W
4Ω| 1600W
Bridged mono mode| 16Ω| 2000W
8Ω| 3200W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 39±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >100V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×452×88mm
Net weight| 30kg
Power supply| AC 240V,50Hz/60Hz,1500VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA2002

Rated Power

| Stereo mode| 4Ω| 950W
---|---|---|---
2Ω| 1500W
Parallel mono mode| 4Ω| 950W
2Ω| 1500W
Bridged mono mode| 8Ω| 1900W
4Ω| 3000W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 35.7±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >70V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×452×88mm
Net weight| 30kg
Power supply| AC 240V,50Hz/60Hz,1500VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA1330

Rated Power

| Stereo mode| 8Ω| 660W
---|---|---|---
4Ω| 1000W
Parallel mono mode| 8Ω| 660W
4Ω| 1000W
Bridged mono mode| 16Ω| 1330W
8Ω| 2000W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 37.3±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >80V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×375×88mm
Net weight| 18kg
Power supply| AC 240V,50Hz/60Hz,1000VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA1332

Rated Power

| Stereo mode| 4Ω| 660W
---|---|---|---
2Ω| 1000W
Parallel mono mode| 4Ω| 660W
2Ω| 1000W
Bridged mono mode| 8Ω| 1300W
4Ω| 2000W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 34.2±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >70V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×375×88mm
Net weight| 15kg
Power supply| AC 240V,50Hz/60Hz,1000VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA660

Rated Power

| Stereo mode| 8Ω| 330W
---|---|---|---
4Ω| 500W
Parallel mono mode| 8Ω| 330W
4Ω| 500W
Bridged mono mode| 16Ω| 660W
8Ω| 1000W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 34±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >60V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×375×88mm
Net weight| 15kg
Power supply| AC 240V,50Hz/60Hz,500VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA662

Rated Power

| Stereo mode| 4Ω| 330W
---|---|---|---
2Ω| 500W
Parallel mono mode| 4Ω| 330W
2Ω| 500W
Bridged mono mode| 8Ω| 660W
4Ω| 1000W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7KHz,10%Rated power）
Frequency response| 20Hz~20KHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 31.2±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >50V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×375×88mm
Net weight| 12.5kg
Power supply| AC 240V,50Hz/60Hz,500VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA330

Rated Power

| Stereo mode| 8Ω| 200W
---|---|---|---
4Ω| 300W
Parallel mono mode| 8Ω| 200W
4Ω| 300W
Bridged mono mode| 16Ω| 400W
8Ω| 600W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 32±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >50V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×310×88mm
Net weight| 11kg
Power supply| AC 240V,50Hz/60Hz,300VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA332

Rated Power

| Stereo mode| 4Ω| 200W
---|---|---|---
2Ω| 300W
Parallel mono mode| 4Ω| 200W
2Ω| 300W
Bridged mono mode| 8Ω| 400W
4Ω| 600W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 29±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >50V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×310×88mm
Net weight| 11kg
Power supply| AC 240V,50Hz/60Hz,300VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

PARAMETERS-UA880

Rated Power

| Stereo mode| 8Ω| 800W
---|---|---|---
4Ω| 1260W
Parallel mono mode| 8Ω| 800W
4Ω| 1260W
Bridged mono mode| 16Ω| 1600W
8Ω| 2560W
THD| <0.05%(10%Rated power）
Intermodulation distortion| <0.1%(60Hz/7kHz,10%Rated power）
Frequency response| 20Hz~20kHz(+0/-0.25dB)
Phase difference| <±15°
Damping factors| >800(8Ω/100Hz)
Segregation| >75dB
S/N| >108dB(A-Weight)
Total gain| 38±0.5dB
Difference of Channel gain| <0.25dB
Input sensitivity| 1V
Slew speed| >80V/μs
Input impedance| Unbalanced input 10kΩ,Balanced input 20kΩ
Input connectors| Three pin XLR/6.35mm
Output connectors| Speakon binding post,NL4 speakon
Cooling| Four fans，stepless shifting, Cooling airflow from front to back
Controls on front panel| Switch of AC,Gain controlling knob for channel A and B
Controls on rear panel| Parallel/Stereo/Bridge, LF cutting,Grounding,Limit
Indicator on front panel| Yellow-Bridge,Red-Overload,Green-Signal
Amplifier protection| Short Circuit, Maladjustment of DC, Overload, Overheat ,Etc
Dimensions| 483×452×88mm
Net weight| 25kg
Power supply| AC 240V,50Hz/60Hz,1200VA
Environment Temperature| Working temperature: -10℃~40℃ Storing temperature: -25℃~80℃
Environment humidity| ≤90%

INSTALLATIONS

UA2000/UA2002/UA880: UA1330/UA6660:UA1332/UA662:UA332/UA330:

FRONT PANEL

FOR EXAMPLE UA2000

1. air input port
2. signal indicator of channel A
3. overload indicator of channel A
4. bridge indicator of channel
5. overload indicator of channel B
6. signal indicator of channel B
7. power switch
8. gain adjustment pots of channel A
9. gain adjustment pots of channel B

REAR PANE

FOR EXAMPLE:UA2000

1. signal input of channel A(XLR JACK)
2. signal input of channel A(1/4″mic jack)
3. switch of working modes
4. limiters
5. signal output of channel B(binding post)
6. signal output of channel A(binding post)
7. fuse
8. signal input of channel B(XLR plug)
9. signal input of channel B(1/4″mic jack)
10. filter switch
11.  grounding switch
12. signal output of channel A(NL4 JACK)
13. signal output of channel B(NL4 JACK)
14. cable

POWER SUPPLY

Please assure the local voltage comply with the voltage indicated on rear panel before connecting power supply (AC 240V,50Hz/60Hz);
Please assure the cable and jack of power supply not damaged before connecting power supply; Put off the plug after power off;

INPUT/OUTPUT CONNECTORS

• Input connectors
  • The XLR jack and 1/4″microphone jack in same channel are paralleled;
  • Input the signal from either connectors and output the signal for connecting next amplifier; If the amplifiers connected are too many, the sound quality may be affected;
  • Please do not input the signal from two connectors in same channel at the same time.
• Output connectors
  • The binding post and NL4 jack in same channel of ＂UA series＂amplifier are paralleled; Do not connect loads to the two connectors at the same time;
  • The red end of binding post is connected with anode of speaker, the black end connected with cathode of speaker;
  • Only the load suited with the power and impedance of amplifier can be connected
    with the output connectors of amplifier.

FUNCTION SETUP AND CABLE CONNECTING

1. Limiter setup:
   As the below drawing, when switch is OFF, the limit is off, the limit circuit is out of work, if input signal is too strong, output can cause clip distortion and also raise overload on loudspeaker
   As the below drawing, when the switch is ON, the limit is on, if the input signal is too strong, the limit circuit can control the gain and reduce the distortion, also control the average output power, but it does not affect peak power, protect the loudspeaker and assure the dynamic of music. Note: Please set to “ON” position when using.

2. LF cutting setup:
   When LF cutting is at 50Hz,it equals discrete a 50Hz high pass filter on input, the signal lower than 50Hz will be accordingly attenuated, then can reduce the noneffective swing and lower the distortion.
   Like the right drawing:
   When LF cutting is at 25Hz, it equals discrete a 25Hz high pass filter on input circuit, it just attenuate the signal lower than 25Hz.
   Like the right drawing: When LF cutting is at 5Hz, the audio signal can be amplified really.
   Like the right drawing:

3. Mode option and signal cable connection,
   Like the right drawing:

Connecting direction:

• A、Stereo connecting mode:
  Put the switch of mode at stereo,
  like the right picture:
  Under the stereo mode, the signal on channel A and channel B is independent, the signal to channel A is just for channel A, the signal to channel B is only for Channel B. Like the right drawing:

• B、Mono paralleled mode:
  Put the switch of mode at PARALLEL, like the
  below picture:
  Under the mono parallel mode, the effect of input signal from channel A and channel B is same. The signal on input channel A can be provided to output A, also to output B. The signal on input channel B not only provide to output A, also to output B, But please not input the signal from channel A and B at the same time. Note: The mono parallel mode just means the parallel of input signal. Never parallel the output terminals, Like the right drawing:

• C、Bridged mode:
  Put the switch of mode at BRIDGE, like the
  right picture:
  Under the bridged mono, signal just can be input from channel A, no voice if input from channel B, the anode of output A is the anode of bridged output, the anode of output B is the cathode of bridged output.
  like right drawing: Under the bridge mode, The output voltage is so high enough to make a electronic shock. Please power off the unit before operate it under bridge mode. If need bridge operation under 4Ω please select UA2002

OPERATIONS

Please follow the steps during using the equipment

1. Start
   • a、Setup thef unction and connection according t o t he above f unction s etup a nd connecting;
   • b、Check if the output cable is short circuit and the load is too low;
   • c、Check if the local voltage complies with the user’s manual;
   • d、Be sure the switch of power supply at “0” and the volume is the lowest;
   • e、Connect the power supply, turn on the equipment of sound source, pre and effect equipment and assure these equipments work in order;
   • f、 Turn on the switch of power supply(put it at”1″position);
   • g、Adjust the knob of volume clockwise to right position.
2. Off
   • a、Adjust the knob of volume unti-clockwise to the lowest;
   • b、Turn off the switch of power supply on the front panel(put it at “0”position);
   • c、Turn off the pre and effect equipments, sound source equipments;

INDICATORS ON FRONT PANEL

1. If signal indicator flashes, it means if there is signal output in two channels
2. If peak indicator flashes, it means that the input voltage is too high. You should turn down the volume;
3. If the peak indicator always lights,it means faults.The reason is like this: loading is too low,short on loading,temperature is too high.You should check it after power off. Turn on again if no abnormity;
4. If bridge indicator lights, it means the amplifier is under the bridged mode.

PROTECTION FUNCTION

Perfect protection function can prevent the damage for amplifier and speaker caused by short circuit and output DC and overheat.

1. Short circuit protection: when the load at the output end is short circuit, the equipment can cut off the signal and protect the equipment;
2. Output DC protection: when the equipment has faults and there is DC in output signal, the equipment can cut off output automatically and avoid damage for speaker caused by DC;
3. Overheat protection: If the temperature of heat sink is over the allowed temperature, the sensor will cut off the output , avoid damage caused by high temperature and protect the amplifier.

TROUBLES AND TROUBLE SHOOTINGS

No voice, Power indicator lights off

| 1| Check if the power plug and jack are connected well.

2

| If the power jack corresponds with AC 240V,50Hz/60Hz.
3| Check if the fuse on rear panel is broken.
No voice, Power indicator Lights, Signal indicator Light off| 1| Check if the music signal cable is connected well.

2

| Check if the power of music source is turned on and the volume is turned on.
3| If the volume pots is turned on.

CLIP indicator last slighting on, Voice is abnormal

| 1| If the music source output is too big.
2| If the CLIP LIMITER is at the “ON”position.

3

| Check if there is any short circuit in output connectons and if the load is correct. The restart.

The bass is not sufficient

|

1

| If the LF FILTER on rear panel is at the LF 50Hz or at LF 25Hz, setup the switch at appropriate place.
No voice on one

channel under paralleled mono mode

|

1

| Check if the switch of MODE on rear panel is

at the PARALLEL,please put it at PARALLEL if it not at the position.

Output of bridge is too low

|

1

| Check the input signal can comply with voltage, please enhance the input signal if not sufficient.

2

| Check if input SIGNAL voltage is suited, please enhance the input SIGNAL if not sufficient.
Burning the fuse when start|

1

| Check the local voltage is same as the voltage of the equipment.

Others

|

1

| Check if the setup and connection are accordant with the user manual.

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