DES500.1D - Audio Receiver Diamond Audio - Free user manual and instructions
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| Product type | Audio receiver |
| Brand | Diamond Audio |
| Model | DES500.1D |
| Amplifier technology | Class D |
| Number of channels | 1 |
| RMS power at 4 ohm | 300W |
| RMS power at 2 ohm | 500W |
| Frequency response | 10 Hz - 250 Hz |
| Low-pass filter | Continuously variable, 50-250 Hz |
| Subsonic filter | 10-50 Hz variable |
| Bass boost | 0 to +12 dB at 45 Hz |
| Signal-to-noise ratio | 75 dB |
| Inputs | RCA line-in and speaker-level |
| Power supply | 12V DC (negative ground) |
| Fuse rating | 40A |
| Dimensions (W x D x H) | 12.2 x 7.8 x 2.1 in |
| Weight | 2.8 kg |
| Maintenance and cleaning | Wipe with a soft, dry cloth. Avoid solvents. |
| Safety | Disconnect the battery before service. Ensure proper grounding. |
| Spare parts and repairability | Fuses are replaceable. Service by qualified technician. |
| General information | Designed for marine and outdoor use with conformal coated circuit board. |
Frequently Asked Questions - DES500.1D Diamond Audio
What is the optimal impedance for this receiver?
This receiver is stable down to 2 ohm, delivering 500W RMS. It will also operate at 4 ohm with 300W RMS. For best performance, use a 2 or 4 ohm load.
Can I connect this audio receiver to a factory stereo?
Yes, it has speaker-level inputs that accept high-level signals directly from the speaker wires, making it compatible with factory stereos.
What power and ground wire gauge should I use?
For a 500W amplifier, you should use 4 AWG power and ground cables with a 40A fuse. This ensures minimal voltage drop and safe operation.
How do I set the gain correctly?
Start with the gain at minimum, play music at high volume, then increase until distortion is heard, then back off slightly. This sets the gain optimally without clipping.
Does this receiver have a remote bass knob?
Yes, it includes a wired bass remote control for adjusting bass on the fly, allowing you to fine-tune the sound without accessing the unit.
How do I set the low-pass crossover?
Set the low-pass filter between 50-100 Hz for subwoofers, depending on your system and personal preference. This prevents midrange frequencies from reaching the sub.
Is this unit safe for marine use?
Yes, the circuit board is conformal coated to resist moisture and corrosion, making it suitable for boats and outdoor vehicles.
What is the difference between the 'subsonic filter' and 'low-pass filter'?
The low-pass filter blocks high frequencies, while the subsonic filter blocks ultra-low frequencies below the audible range that can damage subwoofers.
My amplifier goes into protection mode. What should I check?
Check for short circuits, proper grounding, excessive heat, and ensure your battery voltage is above 12V. Also verify that the speaker impedance is not too low.
How do I clean and maintain this audio receiver?
Use a soft dry cloth to wipe the exterior. Do not use harsh chemicals. Keep the heat sinks free of dust and ensure good airflow around the unit.
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USER MANUAL DES500.1D Diamond Audio
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Product information
Brand : Diamond Audio
Model : DES500.1D
Category : Audio Receiver