Sunfire · Accessories · HRSIW8AMP
HRSIW8AMP
In-Wall Subwoofer Amplifier
520 watts of precision-engineered bass, delivered through a single rack unit — the exclusive amplifier for the HRSIW8 in-wall subwoofer.
520W
RMS Output
33Hz
Low Frequency
1U
Rack Height
<0.5%
THD at 500W
Overview
Engineered for
One Purpose
The HRSIW8AMP is not a general-purpose amplifier. It was designed from the ground up to power the HRSIW8 in-wall subwoofer — delivering 520 watts RMS of clean, distortion-free bass through a compact 1U rack-mount chassis.
Engineered for the HRSi Series SC-HRSIW8-CAB, it pairs Sunfire’s High Back-EMF platform with full DSP control — adjustable crossover, five EQ presets, and StillBass vibration elimination for room-filling bass that stays in the room.
Key Features
- All-discrete Class-D amplifier, 520W RMS into 4Ω
- DSP equalization with adjustable crossover (40–160Hz) and selectable slopes (12–36 dB/octave)
- StillBass Technology eliminates mechanical vibration
- Five EQ presets & three memory locations
- Smart standby draws less than 0.5W
- 2× XLR balanced and 2× RCA unbalanced inputs
Specifications
Technical
Specifications
& Dimensions
Amplifier Output
520 watts RMS into 4Ω
Frequency Response
33 Hz – 150 Hz (-3 dB)
High Cut Filter
40 Hz – 160 Hz adjustable, LFE bypass
Crossover Slope
12, 18, 24, 30, 36 dB/octave
Total Harmonic Distortion
< 0.5% at 500W into 4Ω
Maximum Output
> 106 dB peak SPL (1m, anechoic)
Inputs
2× XLR balanced, 2× RCA unbalanced
Dimensions
1.75" × 19" × 11.2" (1U rack)
Weight
13.5 lb (6.12 kg)
Power Consumption
75W average, 815W max, 0.5W standby
Warranty
Built to Perform.
Built to Last.
Limited Warranty — your HRSIW8AMP is backed by comprehensive coverage that ensures years of reliable, high-resolution bass performance in any installation.
Downloads
Product
Resources
HRSIW8AMP Manual
Get the Sound You Want.
Purchase on the Nice Store or find an authorized Nice/SpeakerCraft dealer near you.