SHOW D-150.2 Switching Power Professional Amplifier User Manual

SHOW D-150.2 Switching Power Professional Amplifier

Product Information

Safety Related Symbols

• CAUTION: RISK OF ELECTRIC SHOCK DO NOT OPEN – Indicates that some hazardous live terminals are involved within this apparatus, even under normal operating conditions. Unplug this apparatus during lightning storms or when unused for long periods of time.
• External Connection: The external wiring connected to the output hazardous live terminals requires installation by an instructed person or the use of readymade leads or cords.
• Do not remove any Cover: There may be some areas with high voltages inside. To reduce the risk of electric shock, do not remove any cover if the power supply is connected.
• Protective grounding terminal: Indicates the presence of a protective grounding terminal.
• Alternating current/voltage: Denotes the presence of alternating current/voltage.
• Hazardous live terminal: Indicates the presence of hazardous live terminals.
• ON/OFF: Denotes the apparatus turns on or off. When using the single pole switch, be sure to unplug the AC power to prevent any electric shock before proceeding with your service.

Important Safety Instructions
Please read this manual carefully before operating this unit for the first time.

Introduction
The Switching Power Professional Amplifier is a high-quality amplifier designed for professional audio applications.

Control Elements
The amplifier features the following control elements:

• Front: AC switch, Input level control for each channel
• Rear: Stereo/bridged selector, limit ON/OFF selector

Applications
The Switching Power Professional Amplifier is suitable for various applications, including:

• Live performances
• Studio recordings
• Sound installations
• DJ setups

Wiring Connections
When making wiring connections, follow these guidelines:

• Ensure that the power supply voltage matches the voltage of the power supply before turning on the apparatus.
• Do not cut off the internal or external protective grounding wire or disconnect the wiring of the protective grounding terminal.

Technical Specifications
The technical specifications of the Switching Power Professional Amplifier are as follows:

• Protections: Full short circuit, open circuit, thermal, ultrasonic, and RF protection stable into reactive or mismatched loads, turn ON/OFF, muting, tried crowbar.
• Controls: Front – AC switch, Input level control for each channel; Rear – Stereo/bridged selector, limit ON/OFF selector
• Indicators: SIGNAL – 2 green LED, CLIP – 2 red LED, PROTECTION – red LED
• Connectors: Various connectors for input and output connections

FAQ

• Q: Can I use the amplifier for outdoor events?
  A: The Switching Power Professional Amplifier should not be exposed to dripping or splashing and should not have objects filled with liquids, such as vases, placed on it. Therefore, it is not recommended for outdoor events where it might come in contact with water.

• Q: Can I replace the fuse with a different one?
  A: To prevent a fire, make sure to use fuses with the specified standard (current, voltage, type). Do not use a different fuse or short-circuit the fuse holder. Before replacing the fuse, turn off the apparatus and disconnect the power source.

• Q: How do I connect the protective grounding?
  A: Make sure to connect the protective grounding to prevent any electric shock before turning on the apparatus. Never cut off the internal or external protective grounding wire or disconnect the wiring of the protective grounding terminal.

SAFETY RELATED SYMBOLS

• The symbol is used to indicate that some hazardous live terminals are involved within this apparatus, even under normal operating conditions.
• The symbol is used in the service documentation to indicate that a specific component shall be only replaced by the component specified in that Documentation for safety reasons.
• Protective grounding terminal.
• Alternating current /voltage.
• Hazardous live terminal.
• ON: Denotes the apparatus turns on.
• OFF: Denotes the apparatus turns off, because of using the single pole switch, be sure to unplug the AC power to prevent any electric shock before you proceed with your service.
• WARNING: Describes precautions that should be observed to prevent the danger of injury or death to the user.
• Disposing of this product should not be placed in municipal waste and should be a separate collection.
• CAUTION: Describes precautions that should be observed to prevent danger of the apparatus.

WARNING

• Power Supply
  Ensure the source voltage matches the voltage of the power supply before turning ON the apparatus.

• Unplug this apparatus during lightning storms or when unused for long periods.

• External Connection
  The external wiring connected to the output hazardous live terminals requires installation by an instructed person, or the use of ready-made leads or cords.

• Do not remove any Cover

  • There are maybe some areas with high voltages inside, to reduce the risk of electric shock, do not remove any cover if the power supply is connected.
  • The cover should be removed by the qualified personnel only.
  • No user-serviceable parts inside.

• Fuse

  • To prevent a fire, make sure to use fuses with specified standards (current, voltage, type). Do not use a different fuse or short-circuit the fuse holder.
  • Before replacing the fuse, turn OFF the apparatus and disconnect the power source.

• Protective Grounding

  • Make sure to connect the protective grounding to prevent any electric shock before turning ON the apparatus.
  • Never cut off the internal or external protective grounding wire or disconnect the wiring of the protective grounding terminal.

• Operating Conditions
  This apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on this apparatus.

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

• Do not use this apparatus near water. Install following the manufacturer’s instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not block any ventilation openings.

• No naked flame sources, such as lighted candles, should be placed on the apparatus.

IMPORTANT SAFETY INSTRUCTIONS

• Read these instructions.
• Follow all instructions.
• Keep these instructions.
• Heed all warnings.
• Only use attachments/accessories specified by the manufacturer.

Power Cord and Plug

• Do not defeat the safety purpose of the polarized or grounding-type plug.
• A polarized plug has two blades one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for the replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

Cleaning

• When the apparatus needs cleaning, you can blow off the dust from the apparatus with a blower or clean it with a rag, etc.
• Don’t use solvents such as benzol, alcohol, or other fluids with very strong volatility and flammability for cleaning the apparatus body. Clean only with a dry cloth.

Servicing

• Refer all servicing to qualified personnel. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.
• Servicing is required when the apparatus has been damaged in any way, such as a 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.
• The mains plug is used as the disconnect device, the disconnect device shall remain readily operable.

INTRODUCTION

The D-150.2 / D-300.2 switching power professional Amplifier is designed for professional use on stage. The high-quality components and the carefully designed circuits ensure excellent audio performance and an extremely linear frequency response. In fact, the switching technology offers, together with an increased efficiency and a better control of heat dissipation than conventional power supply systems, a drastic reduction of dimensions and weight, for easier transportation and installation. This Amplifier guarantees total reliability and trouble-free use even in the most demanding conditions. We believe the D-150.2 / D-300.2 will provide a perfect performance, what you get is unprecede nted performance at an incredibly attractive price.

Features

• High current switching power allows high power output with low noise and low distortion
• Substantial protection circuitry like thermal, short circuit, power on/off muting, and Therefore protection
• Built-in limiter
• Balanced XLR-TRS combo input jack
• 1/4″ TRS jack and Speakon output connectors
• Front-mounted gain controls for easy access
• Signal, Clip protect, and Power LED indicators to monitor performance.

CONTROL ELEMENTS

FRONT PANEL

1. Power Switch
   It switches ON/OFF the unit’s main power.

2. Level Control
   These volume controls allow you to adjust the volume level.

3. Power LED
   The Power LED lights up when the amplifier is powered ON.

4. Signal LED
   These green LEDs light up when the respective channel’s output signal passes through.

5. Protection LED
   In normal operation, the LED will not illume; If the LED is red, it means the unit is in heat protection, and no sound is output. The speaker system is disconnected from the amplifier outputs when this LED is red, the temperature must be lowered by better ventilation and decrease the signal level, etc. If the problem is corrected, the protection systems deactivate automatically, and normal amplifier operation is resumed.

6. Clip LED
   This red LED lights up when the input signal is too strong. it is time to reduce the input level until the clip LED turns off.

7. Air Intake Vents
   D-150.2 / D-300.2 employs a variable-speed internal cooling fan to intake the air through the front grill to keep it running cool even under extreme operating conditions. Please keep these vents clear and free from obstruction at all times to ensure proper cooling.

REAR PANEL

1. AC Input
   Use it to connect your D-150.2/D-300.2 to the supplied AC cord.

2. Channel 1 XLR Input
   This XLR jack will accept any balanced or unbalanced low impedance line level source employing a three-pin XLR plug. The wiring for the plug is as follows: Pin1=Ground, Pin2=Signal+, Pin3= Signal-.

3. Channel 1 TRS Input
   This TRS(1/4′) jack will accept line-level signal sources through cables fit with standard 1/4″ phone plugs. This input is compatible with balanced and unbalanced low impedance, and high impedance sources. Low impedance balanced input is to be wired as follows: Tip=signal+, R ing= signal-, Sleeve=Ground.

4. Channel 2 XLR Input
   This XLR jack will accept any balanced or unbalanced low impedance line level source employing a three-pin XLR plug.

5. Channel 2 TRS Input
   This TRS(1/4′) jack will accept line-level signal sources using cables fit with a standard 1/4″ phone plug.

6. Signal Smart Switch
   Use this switch to select the operating mode of the amplifier. The switch functions as follows: STEREO: input 1 to CH 1 amp, input 2 to CH 2 amp; BRIDGE: input 1 to Mono Bridge amps.

7. Channel 1 Speakon NL-4R
   Connect the amplifier to your speakers using these speakon jacks.

8. Channel 1 TRS (1/4″) jack
   Connect the amplifier to your speakers using these speakon jacks.

9. Channel 2 Speakon NL-4R
   Connect the amplifier to your speakers using these speakon jacks.

10. Channel 2 TRS (1/4″) jack
    Connect the amplifier to your speakers using these speakon jacks.

11. Limit Switch
    Control the built-in limiter on/off.

12. Exhaust Vents
    Air is drawn from the front grilles, flown through the unit and heat sink, and then exhausted via the rear vents. Do not block or impede the air flow through these vents and keep the vent areas free of foreign materials.

APPLICATIONS

Stereo Operation
D-150.2/D-300.2 can be used in the stereo mode as two separate 300/600-watt units, each capable of driving loads down to 4 ohms. Each channel operates independently and has its own input connectors, sensitivity level controls, signal indicator LEDs, automatic limiters, fault protection circuitry, power amp, and speaker outputs. In the stereo mode, the signal smart switch must be set to the stereo position. One application of the stereo mode uses one channel of the amplifier for the left-house speakers and the other channel for the right. The mixing board channels can be panned left or right according to the position of the instruments on the stage. This approach provides a more accurate reproduction of the live performance.

SWITCH SET TO STEREO

Mono Bridge Operation
The two internal power amplifiers(CH1 and CH2) can be bridged together to form a single, higher-powered amp. This is especially useful when using the amplifier to power a subwoofer. In the mono mode, the amplifier uses the channel 1 input jacks and sensitivity control(channel 2’s are disabled). When operating in this mode, each channel is independently protected. The signal smart switch must be set to the bridge position and the minimum speaker load impedance must be 8 ohms.

SWITCH SET TO BRIDGE

Patching two bridge mono mode system
Two bridge mono amplifiers can be patched together (operated in mono mode) by connecting signal cable between their input jacks. The signal smart switch must be set to the bridge position.

SWITCH SET TO BRIDGE

WIRING CONNECTIONS

BLOCK DIAGRAM

D-150.2/D300.2 SYSTEM BLOCK DIAGRAM

TECHNICAL SPECIFICATIONS

Stereo Mode

(Both Channels Drive)

| 2 ohms(EIAJ)| 400W2| 600W2
4 ohms(RMS)| 180W2| 300W2
8 ohms(RMS)| 100W2| 180W2

Bridge Mono Mode

| 8 ohms(RMS)| 360W| 600W
4 ohms(EIAJ)| 800W| 1200W
Electrical Specification
Input Sensitivity (Limit Off)| 0.9-1.1V(0+/-1dBv)| 0.9-1.1V(0+/-1dBv)
Input Impedance| ****

20k ohms balanced or 10k Ohms unbalanced

Frequency Response

(at 10dB Rated Output Power)

| 20Hz ~ 20KHz(+0/-1dB)
Voltage Gain| 28+/-0.5dB| 30+/-0.5dB
THD+N

(Ref.1K 1/8 Rated Power, A-Weighted)

| <0.05%| <0.05%
S/N rate

(Ref. Rated Power, A-Weighted)

| >96dB| >98dB
Crosstalk (Below Rated Power)| >70dB| >70dB
Damping Factor(1K 8 ohms)| >180| >180
Power/Output Circuitry| Switching Power Class D| Switching Power Class D
General Specifications

Protections| Full short circuit, open circuit, thermal, ultrasonic, and RF protection stable into reactive or mismatched loads, turn ON/OFF, muting, tried crowbar.
Controls| Front: AC switch, Input level control for each channel Rear: stereo / bridged selector, limit ON/OFF selector
Indicators| SIGNAL: 2 green LED            CLIP: 2 red LED              POWER: 1 Blue LED PROTECTION: red LED
Connectors| INPUT: Active balanced XLR or TRS JACK OUTPUT: TRS JACK and speak- on jacks
Power Supply| 110V-120V or 220V-240V AC 50/60 Hz     10%
Dimensions(mm)| 483(W)281(D)44(H)
Weight| 3.7kg(D-150.2)| 4.7kg(D-300.2)

IMPORTANT!
Please read this manual carefully before operating this unit for the first time.

All rights reserved to SEIKAKU. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this catalogue without written permission is forbidden. Copyright 0 2009 SEIKAKU GROUP.

SEIKAKU TECHNICAL GROUP LIMITED

• NO.I LANE 17, SEC.2, HAN SHI WEST ROAD, TAICHUNG 40151, TAIWAN
• tel: 886-4-22313737
• fax: 886-4-22346757
• www.show-pa.com
• [email protected].

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