Distributor Karma-AV has launched the flagship 17-Ultra Revolution subwoofer series from Ohio-based audio manufacturer SVS in the UK.
The new subwoofers feature a new 17” dual voice-coil SVS driver, dual mono-block Class-D amplification, uprated power supply and advanced DSP and app control, mirroring the size of their 16-Ultra predecessors. The sealed box SB17-Ultra and ported PB17-Ultra aim to bring user-friendly SVS subwoofers to the consumer market.
Formidable new drivers
The new high-excursion 17” design features a 25kg toroidal ferrite magnet motor using SVS’ first dual 8”, copper-clad aluminium voice-coil to deliver exacting control over the 17” 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) with response accuracy and linearity.
New amplifiers
A new dual mono-block STA-2800D Class-D amplifier with MOSFET output stage provides sonic muscle, exerting pinpoint control and maximising output potential.
Eight 60A/200V MOSFETs are accompanied by a power supply complete with onboard AC line conditioner and Power Factor Correction to stabilise the incoming voltage, correct waveform distortions and eliminate electromagnetic and radio interference. The result is optimised signal quality and protection from voltage fluctuations.
More sophisticated DSP
An advanced, high-resolution 295MHz Analog Devices DSP makes amplifier functions shape in-room response and stabilise AC voltage delivery, while managing a multi-point thermal and current monitoring system. 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 comprehensive subwoofer control smartphone app available (iOS, Android, and Amazon Fire) manages calibration and set-up, 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 memory pre-sets for system adjustments to match listening preferences.
Auto EQ subwoofer room correction is new to the 17-Ultra Revolution subwoofers, using the SVS app and built-in smartphone microphone to apply automatic equalisation filters for 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 the app, SVS has provided a rear panel OLED display including a Display Flip function for easier operation from above.
Finish options include piano gloss black and premium black oak wood veneer finishes.
