SVS
Dual SB17-Ultra R|Evolution
Best high-performance subwoofer for audiophiles seeking precise, cinematic bass at home.
Experience revolutionary performance with the SVS SB17-Ultra R|Evolution, the most advanced sealed-cabinet subwoofer in SVS history. Featuring a proprietary 17-inch high-excursion driver with dual voice coils and a powerful dual-mono STA-2800 amplifier, this subwoofer delivers breathtaking low-frequency detail, accuracy, and output. Its advanced 295MHz Analog Devices DSP ensures precise signal processing, while the smartphone control app offers convenient calibration and management. The robust MDF cabinet and auto-room correction technology provide a refined and controlled listening experience, making it ideal for both cinematic slam and delicate musical nuances.
$2699.99
Owner Satisfaction
4.8
/ 5
Category Rank
151
/ 6567
#151 in Speakers
Price vs Category Average
+84%
Above average
Driver
17
/ -inch high-excursion glass fiber composite cone
Who it's for
- Audiophiles seeking perfectly balanced bass across multiple seating positions
- Home theater enthusiasts demanding high-impact, distortion-free cinematic sound
- Tech-savvy listeners wanting precise control over their room acoustics
Who should skip it
- Budget-conscious buyers prioritizing value over absolute performance
- Homeowners with limited floor space or minimalist interior designs
- Casual users intimidated by complex audio calibration and setup
Performance breakdown
Low-Frequency Extension
Reaches deep into sub-bass territory with absolute authority and precision.
Transient Response
Stops and starts with incredible speed for unmatched musical accuracy.
Output Headroom
Dual-mono amplification provides limitless power for even the largest rooms.
Room Integration
Advanced DSP and auto-correction make perfect room matching effortless.
Build Integrity
Massive MDF construction effectively eliminates unwanted cabinet resonance.
User Interface
Smartphone app control simplifies complex calibration for every listener.
Key Specs
Driver
17-inch high-excursion glass fiber composite cone
Voice Coils
Dual 8-inch diameter
Amplifier
SVS STA-2800 Class D with dual-mono discrete Class D amplifiers
Frequency Response
15Hz to 320Hz +/-3dB
Dimensions
20.0" H x 19.5" W x 21.2" D
Weight (unboxed)
124.0lbs (56.25kg)
Cabinet Construction
Robust Medium Density Fiberboard (MDF) with internal bracing
DSP
295MHz Analog Devices Audio DSP with double precision 56-bit filtering
Features
- Proprietary 17-inch high-excursion driver
- Dual eight-inch voice coils for stable current transfer
- Dual-mono Class D amplifiers for limitless headroom
- Advanced 295MHz Analog Devices DSP
- Smartphone control app for convenient calibration
- Auto-room correction tunes output via smartphone
- Robust MDF cabinet cancels resonance
- FEA-optimized convection cooling system
What customers say
Enthusiasts describe the Dual SB17 Ultra setup as transformative, praising its ability to deliver immense, room-filling power with surgical precision. The dual configuration excels at achieving unparalleled bass depth and articulation, smoothing out room modes for critical music listening and demanding home theater use. Users consistently highlight the exceptional speed and musicality of the sealed design. Build quality is frequently cited as tank-like, justifying the premium investment. While the physical size requires placement planning, the sonic rewards solidify this subwoofer system as a reference standard for high-fidelity low-frequency reproduction. The accompanying app support further enhances the excellent user experience.
Know before you buy
The 17-inch driver uses a high-excursion glass fiber composite cone paired with dual 8-inch voice coils. This design allows for significantly more air displacement and stable current transfer, resulting in deeper, more accurate bass than smaller or single-coil drivers.
No, the subwoofer features built-in auto-room correction technology that you can manage directly through the SVS smartphone app. It automatically tunes the output to your specific room environment, making professional-grade calibration accessible for any user.
It is designed to excel at both. The sealed-cabinet design provides the tight, precise control needed for delicate musical nuances, while the powerful dual-mono amplifier delivers the massive output and low-frequency extension required for cinematic impact.
The unit is quite substantial, weighing 124 pounds and measuring approximately 20 inches tall by 19.5 inches wide. Ensure your floor can support the weight and that you have a standard 15-amp home circuit available for power.
The 295MHz Analog Devices DSP uses double-precision 56-bit filtering to process audio signals with extreme accuracy. This ensures that the output remains clean and distortion-free, even when the subwoofer is pushed to high volume levels.
The dual-mono Class D amplifier configuration provides limitless headroom and efficient power delivery. By separating the amplification channels, the system maintains better control over the driver, ensuring the bass remains tight and responsive during demanding passages.
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