By Lisa Johnston
New products on display at the American International Toy Fair, held in N
Torrance, Calif. – Alpine began shipping its redesigned V series of Class D car amplifiers, which are 40 percent smaller than their predecessors and add multiple new features.
The series, called “budget-friendly,” consists of a $230-suggested 500-watt (into 2 ohms) mono amp, a $170 250-watt (into 2 ohms) mono amp, and a $230 4/3/2-channel amp rated at 4x75 watts into 2 ohms.
New features include a higher efficiency design to help sustain output power and prevent thermal shutdown of the amplifier. To upgrade factory radios, the amps feature speaker-level inputs up to 10 volts with non-fading speaker-level inputs and preamp outputs. Remote audio-signal sensing turns on the amps when voltage is detected on speaker-level inputs, eliminating the need to run a turn-on wire when adding the amp to an OEM head unit.
Also for the first time, the mono models feature dual feedback modulation error correction, which analyzes the audio output signal two times, compares it to the input signal, and then applies error correction to reduce distortion. The result, Alpine said, are “amplifiers with the highest damping factor and lowest distortion in their class.” The mono amps also get an optional remote bass-level knob.
The amps also add snap on/off terminal covers for a clean installed look.
The amps include the $230-suggested MRV-M500 amp rated at 500 watts into 2 ohms at 14.4 volts with less than 1 percent THD. It’s rated at 300 watts into 4 ohms. Signal-to-noise ratio is 85dB at 1 watt into 4 ohms.
The $170 MRV-M250 mono amp is rated at 250 watts into 2 ohms at 14.4 volts with less than 1 percent THD. It’s rated at 150 watts into 4 ohms. Signal-to-noise ratio is 85dB at 1 watt into 4 ohms.
The $230 MRV-F300 4/3/2-channel amp is rated at 4x75 watts into 2 ohms at 14.4 volts with less than 1 percent THD. It’s rated at 4x50 watts into 4 ohms. Signal-to-noise ratio is 81dB at 1 watt into 4 ohms.
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