ALPHA A1200.1D - Receiver Hifonics - Free user manual and instructions
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| Type of Product | Car Audio Monoblock Amplifier |
| Model | ALPHA A1200.1D |
| Brand | Hifonics |
| Product Dimensions (W x H x D) | 7.5 x 1.9 x 10.8 in (190 x 48 x 274 mm) |
| Weight | 4.5 lb (2.04 kg) |
| RMS Power Output @ 4 ohms | 400W x 1 |
| RMS Power Output @ 2 ohms | 800W x 1 |
| RMS Power Output @ 1 ohm | 1200W x 1 |
| Amplifier Class | Class D |
| Frequency Response | 10 Hz - 250 Hz (+/- 1 dB) |
| Input Sensitivity | 200 mV - 6 V |
| Low Pass Filter | Variable 35 Hz - 250 Hz, 24 dB/octave |
| Subsonic Filter | Fixed 15 Hz, 24 dB/octave |
| Bass Boost | 0 - 18 dB @ 45 Hz |
| Phase Control | 0° / 180° |
| Speaker Impedance | 1 - 8 ohms (stable at 1 ohm) |
| Power Supply Voltage | 10 - 16 V DC |
| Fuse Rating | 3 x 30 A (total 90 A) |
| Remote Control | Wired remote bass level control included |
| Installation | Professional installation recommended for optimal performance and safety |
| Maintenance | Keep clean and dry; ensure proper ventilation |
| Safety Features | Thermal, short circuit, and over-voltage protection |
| Spare Parts & Repairability | Contact Hifonics customer service or an authorized service center for replacements |
Frequently Asked Questions - ALPHA A1200.1D Hifonics
What is the difference between this monoblock amplifier and a multi-channel amplifier?
A monoblock amplifier such as the Hifonics ALPHA A1200.1D is designed to power a single subwoofer with a dedicated mono channel, while multi-channel amplifiers can run a full speaker setup.
Can I bridge this amplifier?
No, the ALPHA A1200.1D is a monoblock amplifier and cannot be bridged. It is already optimized for single-channel operation.
What is the minimum impedance that this amplifier can handle?
The amplifier is stable down to 1 ohm, delivering 1200W RMS. Ensure your subwoofer(s) have a compatible impedance load.
How do I properly set the gain on this amplifier?
Start with the gain at minimum. Turn the head unit volume to 75%, then slowly increase the gain until you hear distortion, then back off slightly. Use a multimeter or oscilloscope for precise adjustment.
What size fuse does the amplifier require?
The amplifier uses three 30A fuses (total 90A). Use a high-quality AGU or ANL fuse holder and appropriate gauge power wire (minimum 4 AWG).
Does the amplifier come with a remote bass level control?
Yes, a wired remote bass level control is included. It allows you to adjust bass boost from the driver's seat.
How do I protect my amplifier from overheating?
Ensure the amplifier is mounted in a well-ventilated area, away from direct sunlight. The amplifier has built-in thermal protection that will shut it off if it gets too hot.
Can I use this amplifier with a factory head unit?
Yes, but you may need a line output converter (LOC) if the factory unit does not have preamp outputs. The amplifier's input sensitivity (200 mV - 6 V) accommodates low-level signals.
What type of speaker connections does this amplifier have?
The amplifier uses dual binding post terminals for speaker output, which accept bare wire, spade connectors, or banana plugs (check size compatibility).
Where can I find a user manual or wiring diagram?
The original manual is available for free download on the product page at notice-facile.com or on the Hifonics official website.
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USER MANUAL ALPHA A1200.1D Hifonics
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Product information
Brand : Hifonics
Model : ALPHA A1200.1D
Category : Receiver