KARMA-AV Brings SVS 17-Ultra Revolution Subwoofers to the UK

KARMA-AV BRINGS SVS 17-ULTRA REVOLUTION SUBWOOFERS TO THE UK

Engineered from the ground up, the new sealed SB17-Ultra and ported PB17-Ultra subwoofers feature advancements to driver, amplifier, power supply and DSP, including new auto EQ room correction…

Leading distributor Karma-AV is delighted to announce the launch of the flagship 17-Ultra Revolution subwoofer series from SVS to UK audio fans. Mirroring the size of their 16-Ultra predecessors, the new subwoofers feature a new 17-inch dual voice-coil SVS driver, dual mono-block Class-D amplification, uprated power supply and advanced DSP and app control. Consequently, the sealed box SB17-Ultra and ported PB17-Ultra designs are the most powerful, sophisticated, and user-friendly SVS subwoofers ever introduced to the consumer market.

New drivers

As the most formidable driver ever deployed in an SVS subwoofer, the all new high-excursion 17-inch design features a 25kg toroidal ferrite magnet motor using SVS’ first dual eight-inch, copper-clad aluminium voice-coil to deliver effortless output and exacting control over the 17-inch glass- fibre composite cone. This combination generates high sound pressure levels even at infrasonic frequencies (15Hz (-3db) for SB17-Ultra and 12Hz (-3db) for PB17-Ultra), together with response accuracy and linearity.

New amplifiers

Sonic muscle is provided by a new dual mono-block STA-2800D Class-D amplifier with MOSFET output stage. Each amplifier drives one of the dual voice coils to increase the power into the motor while exerting pinpoint control and maximising output potential. Eight 60A/200V MOSFETs deliver the high current necessary for reference-level output with maximum efficiency. To meet the amplifier’s full output potential, SVS has designed an equally capable power supply, complete with onboard AC line conditioner and Power Factor Correction, which stabilises the incoming voltage, corrects waveform distortions and eliminates electromagnetic and radio interference. By doing so it continuously optimises signal quality while ensuring the subwoofers remain impervious to voltage fluctuations.

More sophisticated DSP

An advanced, high-resolution 295MHz Analog Devices DSP orchestrates every function of the amplifier to shape in-room response and stabilise AC voltage delivery while managing a multi-point thermal and current monitoring system for optimal performance and efficiency. In addition, advanced digital audio processing and DACs with 120 dB S/N provide lower noise with greater headroom and fidelity.

Comprehensive app control with auto room correction

The most comprehensive subwoofer control smartphone app available (iOS, Android, and Amazon Fire) manages calibration and setup, featuring controls for volume, low pass filter, phase, polarity, six parametric equalisers, room gain compensation, port tuning (for the PB17-Ultra) and power management settings. There are also three convenient memory presets for fast and easy system adjustments to match listening preferences.

New to the 17-Ultra Revolution subwoofers is intuitive auto EQ subwoofer room correction, which uses the SVS app and the built-in microphone on a user’s smartphone to apply equalisation filters automatically for optimal room gain and in-room frequency response.

Inputs/outputs include unbalanced RCA and balanced XLR I/O pairs, IR and trigger inputs and USB input for SVS SoundPath wireless operation. For those without access to the app, SVS has provided a rear panel OLED display, which includes a convenient ‘Display Flip’ function for easier operation from above. Finish options include piano gloss black and premium black oak wood veneer finishes.