1. Introduction
This manual provides essential information for the safe and efficient operation of your Ashly nX1504 4 Channel Power Amplifier. The nX1504 is a robust power amplifier designed to deliver 4 x 150 Watts at 2 Ohms, suitable for various professional audio applications. Please read this manual thoroughly before installation and operation to ensure optimal performance and longevity of your device.
2. Safety Information
Always adhere to the following safety precautions to prevent electric shock, fire, or damage to the unit:
- Power Source: Connect the unit only to the specified power supply voltage as indicated on the rear panel.
- Grounding: Ensure the unit is properly grounded to prevent electric shock.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the unit to prevent overheating.
- Moisture: Do not expose the unit to rain or moisture. Do not place objects filled with liquids on the unit.
- Servicing: Refer all servicing to qualified service personnel. Do not attempt to service this unit yourself.
- Cleaning: Disconnect power before cleaning. Use a dry cloth for cleaning.
3. Package Contents
Verify that all items are present in the package:
- Ashly nX1504 4 Channel Power Amplifier
- AC Power Cord
- User Manual (this document)
- Rack Mount Screws (if applicable)
4. Product Overview
The Ashly nX1504 features a robust design with intuitive controls and indicators on the front panel, and comprehensive connectivity on the rear panel.
Figure 4.1: Front Panel of the Ashly nX1504 Power Amplifier. This view shows the power button, channel indicators (Clip/Mute, Signal, Current, Protect, Temp), and the nX series branding.
Figure 4.2: Rear Panel of the Ashly nX1504 Power Amplifier. This view displays the DIP switch settings, input connectors (CH1-CH4), speaker outputs, remote control ports, and the AC power inlet.
4.1 Front Panel Features
- Power Button: Turns the amplifier on/off.
- Channel Indicators (1-4):
- CLIP/MUTE: Illuminates when the output signal is clipping or when the channel is muted.
- SIGNAL: Illuminates when an audio signal is present.
- CURRENT: Indicates output current status.
- PROTECT: Illuminates when the protection circuit is active.
- TEMP: Illuminates when the amplifier is overheating.
4.2 Rear Panel Features
- DIP Switch Settings: Configures various amplifier parameters such as gain, HPF, and bridging. Refer to the detailed setup section for specific configurations.
- Input Connectors (CH1-CH4): Balanced input connections for audio signals.
- Speaker Outputs: Connects to loudspeakers. Supports various wiring configurations including bridged mode.
- Remote DC Level: Ports for remote control of channel levels.
- AC Power Inlet: Standard IEC power connector for AC power cord.
5. Setup
Follow these steps to set up your Ashly nX1504 amplifier:
- Rack Mounting: Securely mount the amplifier in a standard 19-inch equipment rack using appropriate rack screws. Ensure sufficient space for ventilation.
- Input Connections: Connect your audio source (mixer, preamplifier, etc.) to the input connectors (CH1-CH4) on the rear panel using balanced XLR or TRS cables.
- Speaker Connections: Connect your loudspeakers to the speaker output terminals. Pay close attention to polarity (+/-) and impedance matching. For bridged operation, consult the rear panel diagram and DIP switch settings.
- DIP Switch Configuration: Before powering on, configure the DIP switches on the rear panel according to your system requirements (e.g., input gain, high-pass filter, bridging). Refer to the diagram on the rear panel for specific switch functions.
- Power Connection: Connect the supplied AC power cord to the AC power inlet on the rear panel, then plug the other end into a grounded power outlet.
- Initial Power On: Ensure all connections are secure and correct. Turn on the amplifier using the front panel power button. Observe the indicator lights for normal operation.
6. Operating Instructions
Once the amplifier is set up, follow these guidelines for operation:
- Gain Structure: Adjust the input gain on your source device and the amplifier's input sensitivity (via DIP switches) to achieve optimal signal-to-noise ratio without clipping. The SIGNAL indicator should illuminate consistently, and the CLIP/MUTE indicator should only flash momentarily during peak signals, if at all.
- Monitoring Indicators: Regularly monitor the front panel indicators:
- CLIP/MUTE: If this light is constantly on, reduce the input level to prevent distortion and potential speaker damage.
- PROTECT/TEMP: If these lights illuminate, the amplifier is in protection mode or overheating. Turn off the unit, allow it to cool, and check for proper ventilation or speaker impedance issues.
- Bridged Mode: If operating in bridged mode, ensure the correct DIP switch settings are applied and that the speaker impedance is suitable for bridged operation (typically higher impedance than stereo mode).
- Power Down: Always power down the amplifier after use by pressing the front panel power button.
7. Maintenance
Proper maintenance ensures the longevity and reliable performance of your amplifier:
- Cleaning: Regularly clean the exterior of the amplifier with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure ventilation grilles are free of dust and debris.
- Ventilation: Periodically check that the ventilation openings are not obstructed. Dust accumulation can lead to overheating.
- Connections: Periodically check all input and output connections for secure fit. Loose connections can cause signal loss or intermittent operation.
- Storage: If storing the amplifier for an extended period, ensure it is in a dry, cool environment, protected from dust and extreme temperatures.
8. Troubleshooting
Refer to the table below for common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord disconnected; Power outlet failure; Internal fuse blown | Check power cord connection; Test power outlet; Contact qualified service personnel for fuse replacement. |
| No sound output | Input cables disconnected; Speaker cables disconnected/incorrectly wired; Amplifier muted; Source device issue | Check all input and speaker connections; Ensure amplifier is not muted; Verify source device is sending signal. |
| Distorted sound / CLIP light on constantly | Input signal too high; Speaker impedance too low | Reduce input level from source; Check speaker impedance and ensure it matches amplifier specifications. |
| PROTECT or TEMP light on | Overheating; Short circuit in speaker wiring; Overload condition | Turn off amplifier, allow to cool; Check speaker wiring for shorts; Verify speaker impedance is within limits. Ensure proper ventilation. |
9. Specifications
Key technical specifications for the Ashly nX1504 Power Amplifier:
- Model Number: nX1504
- Power Output: 4 x 150 Watts @ 2 Ohms (as per product description)
- Product Dimensions: 25 x 20 x 3 inches
- Item Weight: 2 pounds
- Manufacturer: Ashly
- Date First Available: April 6, 2018
- ASIN: B07BYSFDHZ
10. Warranty and Support
For warranty information and technical support, please refer to the official Ashly website or contact their customer service. Keep your purchase receipt as proof of purchase for warranty claims.
Ashly Website: www.ashly.com
Contact Support: Refer to the Ashly website for contact details, including phone numbers and email addresses for technical assistance.
