The all-new digital X-Power series of Class-D amplifiers incorporate even further advancement of Alpine's digital technologies used in our top-of-the-line PDX series for greater power and improved sound quality. Whilst ultra-compact, these digital powerhouses are engineered for robust no-shutdown performance and class-leading sound quality at an exceptional price. What's more, their remote sense turn-on and speaker level input provides easy upgrading of factory systems.

X-Power amplifiers draw on Alpine's revolutionary PDX digital design that achieves high efficiency with audiophile level audio performance and rivalling signal-to-noise ratio. Plus, their extremely high dampening factor ensures uncompromised power and control of low frequency transients.

Features

Install

• Terminal Layout: Two-Sided
• Screw Mount / Wire Cover: Integrated Wire and Mounting Screw Terminals

General

• Amplifier Type: Class-D (Digital)
• Channel Design: 4/3/2 Channel
• Power Supply: MOSFET
• Power Supply Design: DC-DC PWM Power Supply
• Final Outputs: Direct FET
• Crossover: Variable Low Pass & High Pass Filter
• Gain Control: Continuously Adjustable Gain Control
• Bass EQ: Bass EQ Function
• Thermal Control: Multi-stage Power Limiting
• Low-impedance Possibility: Low-impedance Possibility
• Current Protection: Over-Current, Over-Voltage and Thermal Protection
• Board Circuitry: S.T.A.R. Circuit
• Board Design: 6-layer Glass Epoxy PC Board
• Speaker-Level Inputs: 4-channel Speaker Level Inputs
• Power Indicator: Top Mounted Blue LED Power Indicator

Specifications

CEA-2006 Power Ratings

• CEA-2006 Power Rating: 55W RMS x 4 (4-ohm, 14.4V at <1% THD+N)

Max Power Output Ratings

• Max Power: 650W

RMS Power Ratings

• Per channel into 4 Ohms: 55W RMS x 4 (14.4V at Ƈ% THD+N)
• Per channel into 2 Ohms: 85W RMS x 4 (14.4V at Ƈ% THD+N)
• Bridged 4 Ohms: 170W RMS x 2 (14.4V at Ƈ% THD+N)

Sound Tuning

• Crossover Frequency (HPF): 50 - 400 Hz, -12dB/oct.
• Crossover Frequency (LPF): 50 - 400 Hz, -12dB/oct.
• EQ (Equalizer): 0 to +12dB (CH-3/4, fc=50Hz)

Dimensions

• Foot Print (WxHxD) mm: 250 x 58 x 230 mm
• Foot Print (WxHxD) in: 9-7/8'' x 2-1/4'' x 9''
• Heat Sink (WxHxD) mm: 190 x 58 x 230 mm
• Heat Sink (WxHxD) in: 7-1/2'' x 2-1/4'' x 9''

General

• Power Requirements: 14.4 V.DC (11-16 V allowable)
• Input Sensitivity (RCA Input): 0.2 - 4 V
• Input Sensitivity (Speaker Level Input): 0.5 - 10 V
• Input Impedance: i?z10k ohms
• Frequency Response (+0, -3dB: 1W into 4 Ohms) for CH-1/2/3/4: 5 - 45k Hz
• THD+N (10W into 4 Ohms) for CH-1/2/3/4: Ɔ.02 %
• THD+N (50W into 4 Ohms) for CH-1/2/3/4: Ɔ.07 %
• Damping Factor for CH-1/2/3/4: >500
• Signal to Noise (Rated Power into 4 Ohms) for CH-1/2/3/4: 104 dB