PSSO QCA-10000 MK2 4-Channel Power Amplifier Instruction Manual

1. Safety Information

Please read this manual carefully before operating the device. Keep this manual for future reference. Follow all warnings and instructions marked on the product and in this manual.

• Power Source: Connect the device only to a power supply of the type described in this manual or as marked on the device.
• Ventilation: Ensure proper ventilation. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Water and Moisture: Do not use this apparatus near water or moisture.
• Heat: Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Grounding: Do not defeat the safety purpose of the polarized or grounding-type plug.
• Power Cord Protection: Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• Servicing: Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as 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.

2. Introduction

2.1 Product Overview

The PSSO QCA-10000 MK2 is a powerful 4-channel PA amplifier designed with Class-I technology and an integrated switching power supply. Its robust construction and high pulse stability make it suitable for a wide range of professional audio applications, including compact PAs, multi-way PAs, and international concerts. This amplifier offers versatile operating modes and comprehensive protection features to ensure reliable performance.

Figure 2.1: Front view of the PSSO QCA-10000 MK2 4-Channel Power Amplifier, showcasing its sleek design and front panel controls.

2.2 Key Features

• 4-channel PA amplifier with Class-I technology and switching power supply.
• Low weight and compact height due to integrated switching power supply.
• Reliable operation with high pulse stability for diverse applications.
• Three adjustable operating modes: Stereo, Parallel, or Bridge.
• Four independent level controls for each channel.
• Adjustable input sensitivity.
• LED VU meters and indicators for Protect, Clip, and Signal status per channel.
• Speaker power-on delay for protection.
• Comprehensive protection against short circuit, overheating, overload, DC voltage, and VHF signals.
• Electronically balanced inputs via XLR sockets with XLR loop-through outputs.
• Speaker outputs via lockable speakON connectors.
• Robust steel housing with an aluminum front panel.
• Designed for 19-inch rack installation, occupying 2 height units (2U).
• Front-to-rear airflow for efficient cooling via two temperature-controlled fans.

3. Package Contents

Ensure all items are present and in good condition upon unpacking. If any items are missing or damaged, please contact your dealer immediately.

• 1 x PSSO QCA-10000 MK2 Power Amplifier
• 1 x Power Cord
• 1 x Instruction Manual (this document)

4. Product Overview

4.1 Front Panel

Figure 4.1: Front panel of the PSSO QCA-10000 MK2, showing controls and indicators.

1. Power Switch: Turns the amplifier on or off.
2. Channel Level Controls (CH-1 to CH-4): Adjust the output level for each respective channel.
3. LED VU Meters: Indicate the signal level for each channel.
4. Protect LED: Illuminates when a protection circuit is active (e.g., short circuit, overheating).
5. Clip LED: Illuminates when the signal is clipping, indicating potential distortion.
6. Signal LED: Illuminates when an audio signal is present on the channel.

4.2 Rear Panel

Figure 4.2: Rear panel of the PSSO QCA-10000 MK2, showing input/output connections and DIP switches.

1. AC Power Input: Connects the amplifier to the mains power supply.
2. Speaker Outputs (SPEAKON 1-4): Lockable speakON connectors for connecting loudspeakers.
3. XLR Inputs (INPUT CH1-CH4): Balanced XLR inputs for connecting audio sources.
4. XLR Link Outputs (LINK CH1-CH4): XLR loop-through outputs for connecting to other amplifiers or audio devices.
5. Mode/Sensitivity DIP Switches: Used to select operating mode (Stereo, Parallel, Bridge) and input sensitivity. Refer to Section 5.2 for detailed configuration.

5. Setup and Connections

5.1 Rack Installation

The PSSO QCA-10000 MK2 is designed for standard 19-inch rack mounting and occupies 2U of rack space. Ensure adequate ventilation space around the unit, especially at the front and rear for airflow.

5.2 Input and Output Connections

Before making any connections, ensure the amplifier is turned off and disconnected from the power supply.

• Audio Inputs: Connect your audio source (e.g., mixer, pre-amplifier) to the XLR INPUTs (CH1-CH4) on the rear panel using balanced XLR cables.
• Audio Link: Use the XLR LINK outputs to daisy-chain the audio signal to other amplifiers or devices if needed.
• Speaker Outputs: Connect your loudspeakers to the SPEAKON outputs (SPEAKON 1-4) using appropriate speakON cables. Ensure correct polarity and impedance matching.
• Power Connection: Connect the supplied power cord to the AC Power Input on the rear panel and then to a suitable mains power outlet.

5.3 Operating Mode and Sensitivity Configuration

The DIP switches on the rear panel allow you to configure the amplifier's operating mode and input sensitivity. Refer to the diagram on the amplifier's rear panel for specific switch settings.

Note: Always power off the amplifier before changing DIP switch settings to prevent damage.

6. Operation

6.1 Powering On/Off

1. Ensure all connections are secure and correct.
2. Turn down all channel level controls to their minimum setting.
3. Switch on the amplifier using the front panel power switch. The amplifier will undergo a brief power-on delay.
4. To power off, first turn down all channel level controls, then switch off the amplifier.

6.2 Adjusting Levels

Gradually increase the channel level controls (CH-1 to CH-4) to achieve the desired output volume. Monitor the LED VU meters to ensure the signal is not clipping (CLIP LED should not illuminate frequently or stay lit). If the CLIP LED illuminates, reduce the input signal level from your source or the amplifier's channel level.

6.3 Understanding LED Indicators

• SIGNAL LED: Indicates the presence of an audio signal. It should light up when audio is playing.
• CLIP LED: Warns of signal clipping. Occasional flashes are acceptable, but constant illumination indicates severe distortion and potential damage to speakers. Reduce gain.
• PROTECT LED: Indicates that the amplifier's protection circuitry has been activated. This can be due to overheating, short circuits, DC offset, or other faults. If this LED illuminates, turn off the amplifier immediately, check connections, and allow it to cool down if overheating is suspected.

7. Maintenance

Proper maintenance ensures the longevity and optimal performance of your PSSO QCA-10000 MK2 amplifier.

• Cleaning: Regularly clean the exterior of the amplifier with a soft, dry cloth. Do not use liquid cleaners or solvents.
• Ventilation: Ensure that the ventilation openings are free from dust and debris. Periodically clean the fan grilles to maintain proper airflow.
• Connections: Periodically check all cable connections for tightness and signs of wear.
• Storage: If storing the amplifier for an extended period, ensure it is in a dry, dust-free environment.

8. Troubleshooting

This section addresses common issues you might encounter. If the problem persists, contact qualified service personnel.

9. Specifications

10. Warranty and Support

10.1 Warranty Information

This PSSO product is manufactured by Steinigke Showtechnic GmbH. For warranty terms and conditions, please refer to the documentation provided with your purchase or contact your local dealer. Keep your proof of purchase for warranty claims.

10.2 Technical Support

If you encounter issues that cannot be resolved using the troubleshooting guide, or require further technical assistance, please contact the PSSO support team or your authorized dealer. You can find contact information on the official PSSO website or through your point of purchase.

For more information, visit the PSSO Store on Amazon.