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Silver rectangular car amplifier with black heatsink fins and 5 channel label

hifonics

hifonics A2500.5D Alpha 5 channel car amplifier

SKU CH-D2ST-ABGZ3 MPN A2500.5D

Five-channel Class D amplifier delivering up to 2500 watts with electronic crossovers and bass remote

  • Amplifier ClassClass D
  • Amplifier Channels5 Channels
  • TypeAmplifiers
  • Max Power2500W
  • Drives four speakers and a subwoofer from one compact chassis with five channels
  • Delivers up to 750 watts to the subwoofer channel at 1 ohm for deep bass
  • Class D topology provides high efficiency and low heat during extended play
  • Variable 12 dB per octave crossovers let you tune highs and lows per channel
  • Nickel-plated RCA inputs preserve signal purity and reject external noise

Five-Channel Class D Amplifier

The Hifonics Alpha A2500.5D is a five-channel Class D car amplifier rated at 2500 watts maximum power. It combines Full Range Super D-Class and Super D-Class technologies on a double-sided glass epoxy circuit board. Nickel-plated RCA connectors and a low-voltage input circuit aim to minimise distortion and reject external noise. A bass remote is included for subwoofer level control.

System Builders Needing One Amp for Full Range

This amplifier suits installers who want to drive four speakers and a subwoofer from a single chassis. It delivers 100 watts per channel at two ohms for the front and rear pairs, plus 450 watts on channel five. At four ohms the figures drop to 60 watts times four and 250 watts on the subwoofer channel. Buyers who need more than 750 watts at one ohm for bass or who require six or more channels should look elsewhere.

Compact Chassis With Electronic Crossovers

The surface-mount and through-hole construction allows a smaller footprint than older Hifonics models, easing placement in tight cavities. On-board electronic crossovers provide 12 dB per octave slopes: high-pass adjustable from 10 to 250 hertz on channels one through four, low-pass 50 to 250 hertz on channel five. Variable gain accepts 200 millivolts to 10 volts. Common issues include setting the bass boost too high at 45 hertz, which can clip the signal, and running the subwoofer channel below its rated impedance.

Highlights

  • Drives four speakers and a subwoofer from one compact chassis with five channels
  • Delivers up to 750 watts to the subwoofer channel at 1 ohm for deep bass
  • Class D topology provides high efficiency and low heat during extended play
  • Variable 12 dB per octave crossovers let you tune highs and lows per channel
  • Nickel-plated RCA inputs preserve signal purity and reject external noise

Specifications

BrandHifonics
SeriesAlpha
ModelA2500.5D
Amplifier ClassClass D
Amplifier Channels5 Channels
TypeAmplifiers
Max Power2500W

Questions about this item

What head-unit output voltage range works with the amplifier's variable voltage input?

The variable voltage input accepts 200mV to 10V, so most factory and aftermarket head units will match without a line-driver.

Can the four main channels run at 2 ohms while the subwoofer channel runs at 1 ohm simultaneously?

Yes, the amp delivers 4 × 100 W at 2 ohms on channels 1–4 and 1 × 750 W at 1 ohm on channel 5 at the same time.

How do I verify the crossover is active after installation?

Set the variable high-pass on channels 1–4 between 10 Hz and 250 Hz and the low-pass on channel 5 between 50 Hz and 250 Hz; the 12 dB/octave slopes will then shape the signal to each speaker.

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