Deep bass down to 15 Hz

The frequency response of 15 to 320 Hz ± 3 dB shows that the subwoofer can reproduce very deep bass. This is particularly relevant for film sound, LFE effects, electronic music, orchestral passages, and other bass-intensive content.

App control for easy adjustment

The SVS Subwoofer Control App is compatible with Apple iOS, Google Android, and Amazon Fire. Volume, low-pass filter, phase, polarity, six parametric EQs, room gain compensation, presets, and power management can be conveniently set via the app.

OLED display and on-device controls

An OLED display on the back provides direct access to central functions. These include volume, low-pass filter frequency, phase, power mode, display flip, Bluetooth lock, firmware version, and factory reset.

Why a subwoofer makes sense

A subwoofer makes sense because it precisely reproduces deep frequencies that normal speakers often can only reproduce to a limited extent. This results in a significantly fuller, more dynamic sound with palpable bass, more spaciousness, and a more intense listening experience.

Active or passive subwoofer: What is better here?

The SB-17 Ultra R|Evolution is an active subwoofer with an integrated STA-2800 Class-D amplifier. For this product, the active design makes sense because the amplifier, DSP, protection functions, app control, and drivers are directly matched and integrated.

What room size does the subwoofer require?

We recommend a room size of 25 m² to 60 m² (medium to very large rooms) for the subwoofer.

Where should a subwoofer not be placed?

The subwoofer should not be placed near water, heat sources, or without sufficient ventilation in confined furniture. Ventilation openings must not be blocked, as the amplifier needs to be cooled.

Corner placement can be good, but not always

Corner placement can reduce bass cancellations and make the bass sound more powerful. At the same time, depending on the listening position, it can lead to boomy bass; in that case, more distance to the walls or adjustment via the control functions helps.

Good positions in the room

A front placement between or next to the front speakers supports the blending with main speakers and center channel. A side wall position can also work if accuracy and performance in the room come together better there.

Furthermore, we recommend a minimum distance of 10 to 15 cm from the wall. Since the subwoofer is constructed in a sealed enclosure without a rear bass reflex port, it can be placed significantly more flexibly near a wall than a comparable bass reflex model like the PB-17 Ultra.

Two subwoofers for more even bass

The operation of two or more subwoofers can improve frequency response, bass distribution, and performance in the listening area.

Connections for home theater and stereo

For home theater setups, the LFE connection via RCA or XLR is key. In stereo systems, left and right line-level or balanced XLR outputs of a preamplifier can be connected to the subwoofer's inputs.

Wireless option with separately available adapter

A USB port provides power for the SVS SoundPath Wireless Audio Adapter, which is sold separately. This eliminates the need for the connection cable from the source device to the subwoofer.

Does SVS make good subwoofers?

The SB-17 Ultra R|Evolution shows SVS's clear focus on subwoofer technology: large long-throw driver, powerful amplifier, high-resolution DSP, app control, stable MDF construction, Iso-Elastomer feet, and a 5-year warranty. The strength here lies not only in performance, but also in control, adjustability, and integration.

Specifications

General

• Product type: active subwoofer
• Manufacturer: SVS
• Model: SB-17 Ultra R|Evolution
• Principle: sealed enclosure
• Dimensions with grille: 50.7 cm H × 49.5 cm W × 53.7 cm D
• Dimensions without grille: 50.7 cm H × 49.5 cm W × 51.6 cm D
• Weight without packaging: 56.25 kg
• Frequency response: 15–320 Hz ± 3 dB
• In small to medium-sized rooms: deeper extension of 2–3 Hz to be expected
• Warranty: 5 years

Finish and Enclosure

• Finishes: Black Oak Veneer, Piano Gloss Black
• MDF cabinet construction with internal bracing
• Resonance-free, extra-thick ABS grille frame with fabric cover
• Screw-in iso-elastomer feet
• Shipping dimensions: 63 cm H × 63.3 cm W × 75.6 cm D
• Shipping weight: 61.7 kg

Driver

• 17-inch high-excursion front driver
• Driver size: 17? / 43.18 cm
• 8-inch voice coil / dual voice coil design
• 48.9 mm Xmax
• 81.78 mm Xmech
• 4-layer bifilar copper-clad aluminum wire windings
• Fiberglass composite voice coil former
• Four-piece Y35 ferrite magnet motor
• Dual Nomex suspension
• Injection-molded catenary SBR rubber surround
• Fiberglass-laminated dust cap
• Vented composite cone substrate
• Powder-coated cast aluminum basket
• Nickel-plated high-tension spring drivers

Amplifier and Power

• Amplifier: SVS STA-2800 Class D
• Power: 2800 watts RMS
• Peak power: 6000 W peak / 6000+ watts peak
• MOSFET output transistors
• Dual-mono discrete Class-D amplifiers
• Eight 60A 200V MOSFETs
• New switching power supply with 100V–240V full-range active power factor correction
• 160V rail voltage for dual-mono amplifiers
• Integrated power line conditioner
• Convection cooling via vents

DSP and Audio Processing

• 295 MHz Analog Devices audio DSP
• 56-bit double-precision filtering
• DACs with 120 dB signal-to-noise ratio
• Power management algorithms
• Thermal, voltage, and current monitoring
• Custom EQ and DSP limiter settings for the 17-Ultra

Connections

• Unbalanced RCA input
• RCA input impedance: 10 kOhm
• RCA compatible up to 4 Vrms input
• Balanced XLR input
• XLR input impedance: 14 kOhm
• XLR compatible up to 14 Vrms / +24 dBu
• RCA line-level inputs and outputs
• XLR line-level inputs and outputs
• LFE input
• USB Type A port
• 3.5 mm IR input
• 3.5 mm trigger input: 3–12V AC/DC
• AC power cord socket

Control

• Rear-panel OLED display
• Display flip function
• Rear-panel controls for volume, low-pass filter frequency, phase, and system settings
• Auto/On and trigger options via app
• Bluetooth lock
• Factory reset

SVS App Features

• Compatible with Apple iOS
• Compatible with Google Android
• Compatible with Amazon Fire
• Volume
• Fully adjustable low-pass filter
• Phase
• Polarity
• Six parametric EQs
• Room gain compensation
• Setting modes
• Power management
• Three memory presets
• Bidirectional real-time feedback in app and subwoofer interface
• Instructions and tutorials

Adjustment Ranges

• Low-pass filter frequency: 30–200 Hz in 1 Hz steps
• Low-pass filter slope: 6 dB, 12 dB, 18 dB, 24 dB
• Volume: -60 dB to 0 dB in 1 dB steps
• Phase: 0° to 180° in 1-degree steps
• Polarity: positive / negative
• PEQ frequency: 20–200 Hz in 1 Hz steps
• PEQ Boost: -12.0 to +6.0 dB in 0.1 dB steps
• PEQ Q-factor: 0.2 to 10.0 in 0.1 steps
• Room gain compensation frequency: 25 Hz, 31 Hz, 40 Hz
• Room gain compensation slope: 6 dB, 12 dB

Power Consumption and Standards

• Standby mode: 0.5 watts low consumption
• Standard standby mode: < 0.5 W
• Networked standby mode: < 2.0 W
• RoHS compliant
• Lead-free construction

Scope of Delivery

• SVS SB-17 Ultra R|Evolution
• Cover
• Power cable
• Feet
• Documents

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