DATEQ DA Series Power Amplifier Instruction Manual

DA Series Power Amplifier

Installation and Operation Manual

Class-D 1, 2 or 4 Channel Amplifier

• DA-120
• DA-240
• DA-500
• DA-2120
• DA-2240
• DA-2500
• DA-4120
• DA-4240
• DA-4500

Important Safety Information

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heatregisters, stoves, or other devices (including amplifiers) that produce heat.
9. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
10. Connect the device to a mains outlet with a protective earth connection.

Safety Warning

WARNING!

To prevent fire or shock hazard, do not use the plug with an extension cord, receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure. To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. To prevent electrical shock match wide blade plug to wide slot, fully insert.

Contents

• Introduction

Introduction

The DA range class-D power amplifier range uses switching power technology, which results in minimum power consumption and much higher efficiency up to 85%, and it helps to save installation rack space, generate less heat so as to extend its performance life span as a result.

The class-D amplifiers have a rated power output of 120W, 240W or 500W, so it could be used as digital public address system at minimum cost. The versatile loudspeaker outputs of both high impedance 100V & low impedance 8 ohms. It can be used in PA fixed installation or Hi-fi stereo sound installation jobs.

The built-in high-pass filters and auto-standby can be enabled (or disabled) through the dip switch pre-setting.

Automatic standby is activated when there is no signal input for one minute, and wakes up at sight of any input. Visual working status indicators include protection, clip, input and output for easy supervision. With complete short circuit, overload, high temp, clip and DC protection.

Wide AC power supply from 110V to 240V, thus it supports worldwide sound system installation.

There is one balanced input by phoenix connector for each channel with individual gain control.

Front Panel

1. PROT: Protection indicator will light on in orange once the amplifier is in protection status. The protection may be result of a speaker line short circuit, speaker line open circuit, amplifier overload and inner working temperature too high, this indicator gives visual guidance, ask for repair. There are separate protection indicators for each channel. WHEN THE AMP IS IN STANDBY MODE, PROTECTION LED WILL TURN ON. When audio signal is back the amplifier will turn on again.
2. CLIP: Clip indicator will light in red once the input or output is too high. There are separate CLIP indicators for each channel.

Product Usage Instructions

1. Read the installation and operation manual carefully before using the product.

2. Keep the manual for future reference.

3. Follow all safety instructions to prevent any hazards.

4. Install the amplifier in accordance with the manufacturer’s instructions and do not block any ventilation openings.

5. Do not use the amplifier near water and do not expose it to rain or moisture.

6. Clean the amplifier only with a dry cloth.

7. Connect the amplifier to a mains outlet with a protective earth connection.

8. Use the plug only with a suitable outlet and match wide blade plug to wide slot, fully insert to prevent electrical shock and fire hazard.

9. The amplifier has a rated power output of 120W, 240W or 500W and can be used as digital public address system or Hi-fi stereo sound installation.

10. The amplifier has versatile loudspeaker outputs of both high impedance 100V & low impedance 8 ohms.

11. The built-in high-pass filters and auto-standby can be enabled or disabled through the dip switch pre-setting.

12. The automatic standby is activated when there is no signal input for one minute and wakes up at sight of any input.

13. Use the visual working status indicators for easy supervision.
    The protection indicator will light on in orange once the amplifier is in protection status and the clip indicator will light in red once the input or output is too high.

14. There is one balanced input by phoenix connector for each channel with individual gain control.

Important Safety Information

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8.  Do not install near any heat sources such as radiators, heat registers, stoves, or other devices (including amplifiers) that produce heat.
9. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
10. Connect the device to a mains outlet with a protective earth connection.

Safety Warning
WARNING!

• TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THE PLUG WITH
• AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES
• CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
• TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
• THIS APPLIANCE TO RAIN OR MOISTURE.
• TO PREVENT ELECTRICAL SHOC K
• MATCH WIDE BLADE PLUG TO WIDE SLOT, FULLY INSERT.

Introduction

Features:

• Switching power technology power amplifier
• Class-D PA power amplifier of minimum power consump tion
• Less rack space and less heat generation
• Single, double and quadruple channel power amplifier in 1HE 19” rack housing
• Rated power output at 120W, 240W or 500W
• Separate speaker outputs 8Ω/100V
• Balanced XLR input by phoenix connector
• Each input with separate gain control.
• Each channel with high-cut filter
• Built-in auto standby energy saving feature
• Separate channel indicators for protection, clip, input and output
• Complete short circuit, overload, high temp, clip and DC protection
• Wide AC input from 110V to 240V input

Description:
The DA range class-D power amplifier range uses switching power technology, which results in minimum power consumption and much higher efficiency up to 85%, and it helps to save installation rack space, generate less heat so as to extend its performance life span as a result.
The class-D amplifiers have a rated power output of 120W, 240W or 500W, so it could be used as digital public address system at minimum cost. The versatile loudspeaker outputs of both high impedance 100V & low impedance 8 ohms. It can be used in PA fixed installation or Hi-fi stereo sound installation jobs.
There is one balanced input by phoenix connector for each channel with individual gain control.
The built-in high-pass filters and auto-standby can be enabled (or disabled) through the dip switch pre-setting.
Automatic standby is activated when there is no signal input for one minute, and wakes up at sight of any input. Visual working status indicators include protection, clip, input and output for easy supervision. With complete short circuit, overload, high temp, clip and DC protection.
Wide AC power supply from 110V to 240V, thus it supports worldwide sound system installation.

Front Panel

1. PROT
   Protection indicator will light on in orange once the amplifier is in protection status. The protection may be result of a speaker
   line short circuit, speaker line open circuit, amplifier overload and inner working temperature too high, this indicator gives visual guidance, ask for repair. There are separate protection indicators for each channel.
   WHEN THE AMP IS IN STANDBY MODE, PROTECTION LED WILL TURN ON. When audio signal is back the amplifier will turn on again.

2. CLIP
   Clip indicator will light in red once the input or output is too high. There are separate CLIP indicators for each channel.

3. INPUT
   Input indicator will light in green once there is input signal detected. There are separate input indicators for every channel.

4. OUTPUT
   Output indicator will light in green once there is output signall. There are separate output indicators for each channel.

5. POWER
   Power indicator will be light in blue once the unit has been powered by AC or DC24V.

6. POWER SWITCH
   Power switch used to power on and power off the device.

Rear Panel

1. AC POWER CORD
   AC power cord for input from 100V to 240V, auto-switching power supply.

2. LINE INPUT
   The line input supports both balanced or unbalanced inputs from audio sources or mixer, these inputs are equipped with phoenix connectors.

3. GAIN CONTROL
   The gain control is used to adjust the input from various inputs.

4. 24V DC Input
   The 24V DC input is used to connect with battery for backup power supply in case of AC fails.

5. 100V SPEAKER OUTPUT
   The speaker outputs shall be connected to 100V line loudspeakers, the negative end to the speaker negative end and the positive end
   to the speaker positive end. There are separate 100V speaker outputs which could be managed respectively. These speaker
   outputs are equipped with phoenix connectors.
   Never mix the negative end and the positive one, which may cause the short circuit protection. Never connect a low impedance loudspeaker to the 100V connection.

6. 8Ω SPEAKER OUTPUT
   Use the 8 Ω and COM connections when using low impedance 8Ω loudspeakers, the negative end to COM connection and the positive end to the 8 Ω connection. These speaker outputs are equipped with phoenix connectors.
   Never mix the negative end and the positive one, which may cause the short circuit protection.
   Never connect a 100V loudspeaker to these 8Ω connections.

7. HIGH PASS FILTER
   The high pass filter function will be enabled or disabled by setting the HPF dipswitch. There are high pass filters for every channel.

8. AUTO-STANDBY
   The Auto standby function will be enabled or disable d by setting the Standby dipswitch. The enabled auto-standby function
   will automatically set the amp in standby when no input has been detected within 1 minute. The protect LED will light up.
   The amplifier will immediately wake up when there is detection of input signal. There are separate auto-standby dipswitches for every channel.

Speaker Connection

• Connecting 4-16Ω Speaker Systems
  When connecting conventional 4-16Ω speaker systems, connect the speaker’s positive (+) side to the terminal labeled 8Ω. Connect the speaker’s negative (-) side to the terminal labeled COM.

• Connecting 100V Distributed Speaker Systems
  When connecting a high-impedance (100V) speaker system in parallel, connect the speaker’s positive (+) side to the terminal labeled 100V +. Connect the speaker’s negative (-) side to the term inal labeled 100V -.

FOR 4Ω LOW IMPEDANCE SPEAKER CONNECTION F O R 8Ω LOW IMPEDANCE SPEAKER CONNECTION
FOR 100V SPEAKER WITH TRANSFORMER CONNECTION WRONG SPEAKER CONNECTION

Block Diagram

Specifications

HPF ON 70Hz-20KHz (+1/-3dB)

Input| 0.775V, 0dBu, balanced phoenix conn ector
Input Impedanc| 10KΩ
THD| <0.1% (1KHz/-3dBv, 100W)
S/N Ratio| >80dB
Crosstalk| >60dB, 1KHz, Max output
Power Supply| Wide AC input from 110V & 240V, 50-60Hz
Dimension| 482(W)x420(D)x44(H) mm
Warranty| 3 years warranty and free spare parts

@Copyright 2022. All Rights Reserved.

DATEQ International B.V. De Paal 37, 1351 JG Almere, Netherlands
Tel: + 31 36 5472222

E-mail: info@dateq.nl
Internet: www.dateq.nl
Chamber of Commerce: 84615559

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