TAKSTAR EA series Professional Power Amplifier User Manual

TAKSTAR EA series Professional Power Amplifier

Introduction
Our EA series is a type of analog power amplifier with Class-AB design, at 2U rack size. These analog amplifiers are featured by their enjoyable sound, delicate MFHF and punchy LF. There are two precise control knobs and several LED indicators on the front panel, and a cooling system from rear to front which ensures stable performance. Overall, it is very reliable and versatile, especially suitable for conference or entertainment system.

Features

• Class-AB design with toroidal power supply.
• Analog amplifier, featured by enjoyable sound, delicate MFHF and punchy LF.
• Precise gain controls, power/signal/protection/clip LEDs on the front panel.
• DC/thermal/over-load/limiter protection circuit design on each channel.
• Rear-to-front fan cooling for prolonged and reliable operation.
• Balanced XLR input connector and pro SPEAKON output connector.
• Toggle switch on the rear panel to select Stereo/Parallel/Bridge mode.

Function Description

Front Panel

1. Power Switch
   By pressing this button, the soft-start anti-surge circuit will engage, and after 3~4s, the soft boot will complete when you hear a “click” sound. Wait another 1~2s until another “click” sound, then the device will be in operation status.

2. CH-1/CH-2 Input Level Control Knob
   Adjust this knob to control the volume to a desired level.

3. CH.A/CH.B Peak LED
   This LED indicator illuminates in two scenarios:

4. When the amplifier output power reaches maximum and clipping is about to occur, at which point you should properly lower the input level.

5. When there is signal input but no sound on the speaker, the indicator flashes continuously. This is due to a load short-circuit, in which case you should turn off the amplifier power and resolve the short-circuit issue before resuming operation.

6. CH.A/CH.B Protection LED
   This LED indicator illuminates in four scenarios:
   a). 3~5s after bootup; b). Overload protection; c). DC protection; d). Device operating temperature exceeds 90°C; e). amplifier malfunction.

7. CH.A/CH.B Signal LED
   This LED indicator illuminates when the amplifier is in normal work status and there is signal output.

8. Power LED

Rear Panel

1. Power Input

2. Fan and ventilation opening: the amplifier generates heat when running, therefore DO NOT block.

3. Output Mode Selection: select either Stereo/Parallel/Bridge.

4. Input Sensitivity Selection: select either 1.0V/1.4V (flip#4 corresponds to CH.2, and flip#5 to CH.1)

5. CH.1/CH.2 XLR Signal Input: a standard XLR (Female) connector; Pin1: GND (Ground), Pin2: POS (+), Pin3 NEG (−).

6. CH.1/CH.2 XLR Signal Output: a standard XLR (Male) connector, which can transfer signal to another amplifier by connecting to its XLR (Female) connector; Pin1: GND (Ground), Pin2: POS (+), Pin3: NEG (−).

7. CH.2 SPEAKON Output
   A professional SPEAKON connector: CH.2 Output: 1+, 1−; CH.1 Output: 2+, 2−; BRG: 1+, 2−.

8. CH.1 SPEAKON Output
   A professional SPEAKON connector: CH.1 Output: 1+, 1−; CH.2 Output: 2+, 2−; BRG: 1+, 2−.

Technical Specifications

Model

8Ω

| EA-2                                                    EA-3
---|---
Rated Output Power (1KHz, 1% THD)| Stereo| 4Ω| 220W+220W 330W+330W

330W+330W                                                            500W+500W

8Ω|
Bridge| 8Ω| 440660W0W 1000W

W+44                                                             660W+660W

PeakPower

(1KHz,1%THD)

| Stereo| 4Ω| 660W+660W 1000W+1000W
|
Bridge| 8Ω| 1320W 2000W
Output Connector| Binding for Stereo & Bridge Output

20Hz-20KHz

Frequency Response|
Input Sensitivity| 20k /Bala 1.0V; 1. 4V/un-Balanced

nced, 10k

Input Impedance

(bal/unbal)

|
S/N Ratio| <0.03%（8oh 100dB z/half power）

ms/1KH

Distortion|
Crosstalk (at rated output

power, 1KHz, 8 Ohms)

| 80dB

300

Damping Factor (1KHz, 8 Ohms)| 20 V/uS
Conversion Rate| Soft Start, Short Circuit, Limiter, DC Fault, AC Line Fuse, Thermal Cut
Protection|
Cooling System| Two steps speed fan
Power Requirement| AC:220-240V  50Hz
Net Weight (kg)| 11.8kg 12.4kg
Dimension (WDH)| 483x88x410mm

Safety Instructions

To avoid electric shock, overheat, fire, radiation, explosion, mechanical risk and injury or property loss due to improper use, please read and observe the following items before use:

1. Please check if the power of the connected equipment matches with that of this product before operation. Adjust the volume to proper level during operation. Do not operate at over-power or high-volume level for extended time to avoid product malfunction or hearing impairment.
2. If there is any abnormality during use (e.g., smoke, strange odor), please kill the power switch and unplug from power source, then send the product to the local dealer for repair.
3. Keep this product and its accessories in a dry and ventilated area. Do not store in a humid or dusty area for extended time. Keep away from fire, rain, liquid intrusion, bumping, throwing, vibrating, or from blocking any ventilation openings, to prevent malfunction.
4. The product must, when installed on walls or ceilings, be fixed firmly in place at adequate strength to prevent from falling
5. Please abide by safety rules during operation. Do not use the product in places prohibited by laws or regulations to avoid accident.
6. Do not disassemble or repair the product by yourself to avoid injury. If you have any questions or require any services, please contact our local dealer.

Guangdong Takstar Electronic Co., Ltd.
Address: No. 2 Fu Kang YiRd., Longxi Boluo
Huizhou, Guangdong 516121 China
Tel:86 752 6383644 Fax: 86 752 6383952
Email: sales@takstar.com
Website: www.takstar.com

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