Alpine R-A90S
$700.00
R Series 6-channel car amplifier — 75 watts RMS x 4 at 4 ohms + 250 watts RMS x 2 at 2 ohms
For loud and realistic-sounding music. Into high-res music? Alpine’s R-Series R-A90S amplifier reproduces high-frequency sounds up to 45,000 Hz, so you can enjoy the clean sound and enhanced realism you want in your music. Alpine applied some hot technology from their top-of-the-line X-Series amplifiers into this R-Series amp, including the use of high-efficiency transformers and premium custom capacitors in the amp’s construction. Dual “Sierra” feedback circuitry decreases distortion by correcting the output using the original input signal. Even if you’re playing CDs and standard-resolution music files, you can count on superior sound quality from this amplifier.
It’s not just about power. Alpine designed this amp to run a 3-way active system. Channel 1/2 can send a couple tweeters up to 75 watts RMS each and features a high-frequency high-pass filter necessary for safe tweeter operation. Channel 3/4 can send a pair of midrange drivers 75 watts RMS each and features a band-pass filter that keeps extreme highs and lows away from the midrange speakers. Channel 5/6 is for subwoofers, low-pass filter only, and can power two subs with up to 250 watts RMS each, or one sub with 500 watts.
For maximum overdrive. You could also use this amplifier to power two high-performance speakers with 200 watts each plus a sub with 500 watts for optimum power applications. In these cases you’d switch the crossovers from 3-way to 2-way operation. Whatever configuration you decide on, don’t forget to include the optional RUX-KNOB.2 remote bass knob to control your bass from the dash.
Product Highlights
- Type: 6-channel car amplifier
- Power Output: 75 watts RMS x 4 + 150 watts RMS x 2 at 4 ohms
- Alternate Power Ratings: 100 watts RMS x 4 + 250 watts RMS x 2 at 2 ohms
- Bridged Output: 200 watts RMS x 2 bridged at 4 ohms + 500 watts RMS x 1 bridged at 4 ohms
- Frequency Response: 10-45,000 Hz
- Amplifier Class: Class D
- Signal-to-Noise Ratio: 85 dB
Key Features
- High-Resolution Audio Capability:
- Extended frequency response up to 45,000 Hz
- Premium components from Alpine’s X-Series technology
- Dual “Sierra” feedback circuitry reduces distortion
- Versatile Crossover System:
- Ch 1/2: Selectable high-pass filter (50-400 Hz or 400-6000 Hz)
- Ch 3/4: Variable high-pass or bandpass filter (50-400 Hz and 400-6000 Hz)
- Ch 5/6: Variable low-pass filter (50-400 Hz)
- All filters feature 12 dB/octave slopes
- Flexible Configuration Options:
- Ideal for 3-way active systems (tweeters, midrange, subwoofers)
- Can be configured as 6, 5, 4, or 3-channel amplifier
- GTO™ signal-sensing turn-on with Ch1/2 speaker-level input
- Speaker and preamp level inputs
- Optional Bass Control:
- Compatible with RUX-KNOB.2 remote bass level controller
Package Contents
- 6-Channel amplifier
- Three 30-amp ATO fuses (installed)
- 4 Mounting feet
- Four 3/4″ Screws
- Eight M2.5×5.5mm Machine screws
- 2mm Allen wrench
- 3mm Allen wrench
- Owner’s manual
- Alpine Verification Certificate
- Power supply note
- Online product registration information
