{"product_id":"svs-pb17-ultra-subwoofer","title":"SVS PB17-Ultra Subwoofer","description":"\u003cp\u003eBorn from three decades of SVS design expertise, PB17-Ultra R|Evolution is the pinnacle of ported subwoofer performance. A massive 17-inch driver with first-ever dual 8-inch voice coils is driven by the most powerful amplifier ever deployed in a consumer subwoofer, with DSP intelligence far beyond anything available. All married to advanced power management and auto EQ room correction. The benchmark for reference subwoofer experiences has arrived.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2792\/5768\/files\/SVSPB-17Ultrasmalllifestyle.jpg?v=1778587541\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eBreathtaking low frequencies with unerring accuracy, room-shaking output, and stop-on-a-dime control. The deep, chest-thumping slam of cinematic soundtracks and the delicate nuance of musical bass are always rendered truthfully.\u003c\/p\u003e\n\u003cp\u003eWhether heard or felt, low frequencies are handled effortlessly without sacrificing sonic fidelity and refinement. With extension to 12Hz, far below the threshold of human hearing, PB17-Ultra R|Evolution brings sound to life with convincing, visceral, and jaw-dropping impact.\u003c\/p\u003e\n\u003ch3\u003e17-inch SVS driver\u003c\/h3\u003e\n\u003cp\u003eIt was a ground-up process designing the largest, most formidable driver ever deployed in an SVS subwoofer. An all-new dual voice coil, suspension, basket, and extreme-excursion surround achieve chest-compressing sound pressure levels with flawless tonal accuracy.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight and rigid 17-inch glass-fibre composite cone\u003c\/strong\u003e with optimal stiffness-to-mass ratio for maximum efficiency and acoustic linearity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55lb four-piece toroidal ferrite electromagnetic motor \u003c\/strong\u003egenerates massive force with precise control, remaining authoritative yet detailed and controlled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme-excursion catenary SBR rubber surround\u003c\/strong\u003e maintains pure, long-throw pistonic driver motion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDual 8-inch voice coils\u003c\/h3\u003e\n\u003cp\u003eUnprecedented dual 8-inch voice coils ensure stable transfer of electromagnetic current to the 17-inch driver for authoritative output and pinpoint driver control.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-layer bi-filar dual voice coil conducts massive power \u003c\/strong\u003efrom the dual-mono amplifier to the motor with maximum thermal efficiency, resulting in effortless acoustic output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper-clad aluminium voice coil wire\u003c\/strong\u003e combines the best properties of both elements, yielding ideal thermal capacity and magnetic field strength\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiscrete MOSFET output\u003c\/h3\u003e\n\u003cp\u003eThe sonic muscle behind the most powerful and highest-fidelity SVS subwoofer amplifier ever developed. PB17-Ultra R|Evolution STA-2800D features technological breakthroughs never previously offered in a consumer subwoofer, ensuring refined behaviour and pristine response at any volume.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimitless headroom from dual monoblock Class D amplifiers\u003c\/strong\u003e with MOSFET output stages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach amplifier drives one of the dual voice coils\u003c\/strong\u003e within the motor to assert pinpoint control and maximise power fed to the driver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight 60 Amp 200 Volt MOSFETs\u003c\/strong\u003e deliver extreme high current for reference-level output with maximum efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSwitch mode power supply\u003c\/h3\u003e\n\u003cp\u003eRegardless of the power coming from your household circuit, the PB17-Ultra R|Evolution always maintains peak performance and remains impervious to voltage fluctuations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard AC line conditioner \u003c\/strong\u003efilters and stabilises incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interference to optimise signal quality and audio performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnsures clean and consistent 160V rail voltage and optimal power delivery\u003c\/strong\u003e from a standard 15-amp home circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower factor correction (PFC)\u003c\/strong\u003e time-aligns AC voltage to AC current, resulting in less heat, greater efficiency, reliable peak power output, and consistent performance across a wide voltage range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFEA-optimised convection cooling system\u003c\/strong\u003e has no exterior heatsinks, an extraordinary feat for such a powerful amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExtreme subwoofer intelligence\u003c\/h3\u003e\n\u003cp\u003eOrchestrating the cutting-edge amplifier, motor, and driver ecosystem is the most sophisticated DSP ever deployed in a consumer subwoofer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurately shapes in-room frequency response\u003c\/strong\u003e with absolute precision for faithful signal reproduction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonitors every function\u003c\/strong\u003e of the amplifier to stabilise AC voltage delivery and maintain consistent peak output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-point thermal, voltage, and current monitoring\u003c\/strong\u003e ensures maximum output and efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced digital audio processing and DACs \u003c\/strong\u003e(Digital-to-Analog Converters) with 120dB signal-to-noise ratio provide greater headroom, lower noise, and pristine fidelity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSVS subwoofer smartphone control\u003c\/h3\u003e\n\u003cp\u003eCompatible with Apple iOS, Google Android, and Amazon Fire platforms, the SVS Subwoofer Control Smartphone app allows convenient subwoofer tuning and management.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls for volume\u003c\/strong\u003e, low-pass filter, phase, polarity, six parametric equalisers, room gain compensation, tuning modes, and power management settings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes three convenient memory presets\u003c\/strong\u003e for fast and easy system adjustments for music, movies, night mode, and more Variable port tuning modes with included port plugs enable Standard, Extended, and Sealed configurations for tailored performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier rear panel OLED\u003c\/strong\u003e and control interface provide direct control of key features and include a “Display Flip” function\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAuto room correction\u003c\/h3\u003e\n\u003cp\u003eAchieves pristine fidelity by resolving acoustic issues caused by your room in a few simple steps.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2792\/5768\/files\/SVSPB-17Ultrasmall.jpg?v=1778587541\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatically tunes subwoofer\u003c\/strong\u003e output using your smartphone microphone and the SVS subwoofer app\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplies equalisation\u003c\/strong\u003e filters, capitalises on available room gain, and optimises in-room frequency response at main listening positions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple process\u003c\/strong\u003e requires only a few steps for significant improvements in room response\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9589%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eFrequency Response \/ Acoustic Data:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003e14Hz to 220Hz ±3dB (standard mode – all ports open)\u003c\/p\u003e\n\u003cp\u003e12Hz to 220Hz ±3dB (extended mode – 2 ports open)\u003c\/p\u003e\n\u003cp\u003e4Hz to 320Hz ±3dB (sealed mode – all ports sealed)\u003c\/p\u003e\n\u003cp\u003eRoll-off slope specifically optimised to take maximum advantage of available room gain.\u003c\/p\u003e\n\u003cp\u003e2-metre ground plane away from reflective structures (quasi-anechoic).\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eSubwoofer Specs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003ePiano Gloss Black and Black Oak real wood veneer finishes\u003c\/p\u003e\n\u003cp\u003eFront-firing 17-inch high-excursion driverTriple high-flow 4-inch portsRear-panel OLED amplifier control interface with fast access to key features and “Display Flip” function\u003c\/p\u003e\n\u003cp\u003eProtective non-resonant extra-thick ABS grille frame with fabric mesh coverRobust medium-density fibreboard (MDF) cabinet with internal bracing for resonance-free performance at high output levels\u003c\/p\u003e\n\u003cp\u003eScrew-in iso-elastomer feet for reduced noise artefacts and improved stability\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eDimensions \u0026amp; Weight:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003eDimensions (with grille): 25.0” (635mm) H x 21.7” (550mm) W x 29.3” (744mm) D\u003c\/p\u003e\n\u003cp\u003eDimensions (without grille): 25.0” (635mm) H x 21.7” (550mm) W x 28.5” (723mm) D\u003c\/p\u003e\n\u003cp\u003eShipped dimensions: 30.2” (767mm) H x 27.5” (698mm) W x 38.4” (976mm) D\u003c\/p\u003e\n\u003cp\u003eWeight (unboxed): 164.7lbs (74.7kg)\u003c\/p\u003e\n\u003cp\u003eShipped weight: 186.1lbs (84.4kg)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eDriver Specs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003eProprietary 17-inch long-throw driver with high-precision overhung motor\u003c\/p\u003e\n\u003cp\u003eWoofer mass: 63.76lb (28.92kg); motor mass: 54.17lb (24.57kg)48.9mm \u003c\/p\u003e\n\u003cp\u003eXmax, 81.78mm Xmech excursion\u003c\/p\u003e\n\u003cp\u003e8-inch voice coil with 4-layer bifilar copper-clad aluminium wire windings\u003c\/p\u003e\n\u003cp\u003eDual voice coil design for maximum output\u003c\/p\u003e\n\u003cp\u003eGlass-fibre composite formerFour-piece Y35 ferrite magnet motor\u003c\/p\u003e\n\u003cp\u003eDual shorting rings for reduced distortionNomex high-temperature leads\u003c\/p\u003e\n\u003cp\u003eLow-carbon 1010 steel top plate and T-yoke\u003c\/p\u003e\n\u003cp\u003eDual Nomex extreme-excursion spiders\u003c\/p\u003e\n\u003cp\u003eSBR rubber surround for precise pistonic motionVented composite cone structure with glass-fibre laminate dust cap\u003c\/p\u003e\n\u003cp\u003eHigh-density 17-inch powder-coated cast aluminium basket (FEA optimised)\u003c\/p\u003e\n\u003cp\u003eNickel-plated high-tension spring terminals\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eAmplifier Specs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003eSledge STA-2800D with 2800W RMS continuous power (6000W+ peak dynamic)\u003c\/p\u003e\n\u003cp\u003e295MHz Analog Devices audio DSP with 56-bit filtering\u003c\/p\u003e\n\u003cp\u003eAdvanced power management and thermal\/voltage\/current monitoring120dB signal-to-noise ratio DACs\u003c\/p\u003e\n\u003cp\u003eDual-mono Class D amplification using eight 60A 200V MOSFETs\u003c\/p\u003e\n\u003cp\u003eSwitch Mode Power Supply with active Power Factor Correction (100–240V)\u003c\/p\u003e\n\u003cp\u003eStable 390V DC pre-regulation and 160V rail voltage\u003c\/p\u003e\n\u003cp\u003eOnboard AC line conditioning and waveform correction\u003c\/p\u003e\n\u003cp\u003eConvective cooling plate design eliminating need for external heatsinks\u003c\/p\u003e\n\u003cp\u003eRCA (10kΩ) and XLR (14kΩ) inputsUSB power for SVS SoundPath Wireless Audio \u003c\/p\u003e\n\u003cp\u003eAdapter support3.5mm trigger input (3–12V AC\/DC) and IR inputUltra-low 0.5W standby power consumption\u003c\/p\u003e\n\u003cp\u003eRoHS compliant and globally certified\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eSVS App Features:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003eCompatible with iOS, Android, and Amazon Fire\u003c\/p\u003e\n\u003cp\u003eFull DSP control: volume, low-pass filter, phase, polarity, 6 PEQs, room gain compensation, tuning modes, power management\u003c\/p\u003e\n\u003cp\u003eThree memory presets for system adjustments\u003c\/p\u003e\n\u003cp\u003eAuto Room Equalisation (over-the-air update support)\u003c\/p\u003e\n\u003cp\u003eMicrophone-based room measurement and automatic filter calculation\u003c\/p\u003e\n\u003cp\u003eReal-time bidirectional feedback between app and subwoofer\u003c\/p\u003e\n\u003cp\u003eBuilt-in tutorials for setup and calibration\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.3271%;\"\u003e\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.3944%;\"\u003e\n\u003cp\u003eProtective non-resonant ABS grille with fabric mesh cover\u003c\/p\u003e\n\u003cp\u003eIso-elastomer feet\u003c\/p\u003e\n\u003cp\u003eThree foam port tuning plugs\u003c\/p\u003e\n\u003cp\u003eExtra heavy-duty 6ft (1.8m) high-current power cord\u003c\/p\u003e\n\u003cp\u003eQuick Start Guide\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"SVS","offers":[{"title":"Black Oak","offer_id":56626840797570,"sku":"PB17-ULTRA_BLK","price":3499.0,"currency_code":"GBP","in_stock":true},{"title":"Gloss Black","offer_id":56626840830338,"sku":"PB17-ULTRA_GLS_BLK","price":3749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2792\/5768\/files\/SVSPB-17UltraBlackOak.jpg?v=1778587541","url":"https:\/\/dougbradyhifi.com\/products\/svs-pb17-ultra-subwoofer","provider":"Doug Brady HiFi","version":"1.0","type":"link"}