Alpine R-A90S

Experience your music in Hi-Res with the R-Series R-A90S 6-Channel Amplifier. This is one of the most versatile Class-D 6-channel amplifiers on the market, with a unique power-scaling channel layout that doubles the power in the last two channels, as well as built-in high-pass and low-pass filters for building any kind of sound system.

The "R" series of speakers and subwoofers has a legacy of sound quality that you can hear a block away, and the recently added R series amplifiers are no exception. In addition to best-in-class performance, these amplifiers are tuned to highlight the characteristics of the R-Series speakers and subwoofers, giving you that legendary R-Series experience.

Features & Details

FEATURES
 

• Terminal Layout: One side
• Small footprint for easy installation
• Screw terminals (for speaker and power cables)

General

• Amplifier Type: Class-D (Digital)
• Channel Design: 6/5/4/3 Channel Design with Ch 5 + 6 Power Stagger Feature
• Thermal Management Control
• Top Mounted LED Power/Status Indicator
• Speaker Level Input with remote turn on
• Crossover: Adjustable Low-pass (LPF), High-Pass Filter (HPF) and Band-Pass Filter
• Gain Control: Adjustable
• Bass EQ
• Remote Bass Control (RUX-KNOB2) Ready

SPECIFICATIONS

Max Power Output Ratings

• Total Max Power: 1800W

RMS Power Ratings

• Per Channel into 2 Ohms, 14.4V (≤1%THD+N): 4 x 100W + 2 x 250W
• Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 4 x 75W + 2 x 150W
• Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 4 x 75W + 1 x 500W (bridged)
• Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 2 x 150W + 1 x 500W (bridged)

Sound Tuning

• Variable HPF/HPF-H: 50Hz - 400Hz / 400Hz - 6kHz
• LPF: 50Hz - 400Hz
• BPF-L / BPF-H: 50Hz - 400Hz / 400Hz - 6kHz

General

• Power Requirements: 14.4 V.DC (9 - 16 V allowable)
• Input Sensitivity (RCA Input): Hi: 0.5V - 10V / Low: 0.2V - 4.0V
• High Level Input with automatic power on
• Cable size: Power Cable AWG 4, SPK Cable AWG 8
• Frequency Response (+0/ -3dB: 1W into 4 Ohms): 10Hz - 45kHz
• THD+N (@ 10W into 4 Ohms): <0.02%
• THD+N rated power into 4 Ohms): <0.03%
• Damping Factor: >500 (ref. 10W into 4 Ohms at 100Hz)
• Signal to Noise (rated power into 4 Ohms): >103dB (Ch 1-4) / >106dB (Ch 5+6)
• Weight: 4.52kg

Dimensions

• Heat Sink (WxHxD) mm: 273 x 50.8 x 200
• With attached brackets (WxHxD) mm: 273 x 50.8 x 324