D FOUR - Receiver Helix - Free user manual and instructions
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| Product Type | Receiver |
| Brand | Helix |
| Model | D FOUR |
| Dimensions (W x H x D) | 180 mm x 50 mm x 160 mm (1 DIN) |
| Weight | 0.5 kg |
| Power Supply | 12 V DC (negative ground) |
| Power Consumption | Max 15 A |
| Output Power | 4 x 50 W max |
| Tuner Bands | AM / FM |
| FM Frequency Range | 87.5 – 108.0 MHz |
| AM Frequency Range | 530 – 1710 kHz |
| Preset Stations | 30 (18 FM + 12 AM) |
| Bluetooth | Yes, version 5.0 |
| USB Input | Yes, supports MP3/WMA |
| AUX Input | 3.5 mm front panel |
| Audio Outputs | 4-channel RCA pre-outs |
| Display | LCD dot matrix |
| Remote Control | Included (IR) |
| Operating Temperature | -20°C to +60°C |
| Material | Metal chassis, plastic front panel |
| Color | Black |
| Warranty | 2 years |
| Certifications | CE, RoHS |
| Included Accessories | Mounting kit, wiring harness, remote control |
| Maintenance | Clean with dry cloth; avoid liquids |
| Safety Precautions | Do not use in wet areas; disconnect battery before installation |
| Repair / Spare Parts | Contact authorized service center |
Frequently Asked Questions - D FOUR Helix
What is the power output of the Helix D FOUR receiver?
The Helix D FOUR delivers a maximum power output of 4 x 50 watts, providing ample sound for most car audio systems.
Does the D FOUR support Bluetooth?
Yes, it features Bluetooth 5.0 for hands-free calling and wireless audio streaming.
What radio bands does the D FOUR cover?
It covers AM (530–1710 kHz) and FM (87.5–108.0 MHz) with RDS support.
How do I install the Helix D FOUR in my car?
Installation requires connecting the wiring harness to your car's power, speakers, and antenna. Use the included mounting kit to secure the unit. For detailed steps, refer to the manual.
Can I connect my phone via USB?
Yes, the front USB port supports MP3 and WMA playback from compatible devices.
How do I reset the receiver?
Press and hold the reset button (located on the front panel) for 5 seconds with a pointed object.
What are the dimensions of the D FOUR?
It is a standard 1 DIN size: 180 mm wide, 50 mm high, and 160 mm deep.
Does it come with a remote control?
Yes, an infrared remote control is included for convenient operation.
What should I do if the receiver overheats?
Ensure adequate ventilation around the unit. If overheating persists, reduce volume and check for obstructions. Contact support if problem continues.
Where can I find spare parts for the D FOUR?
Spare parts are available through authorized Helix service centers. Contact Helix customer support for assistance.
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