{"product_id":"psb-subseries-bp7-subwoofer","title":"PSB SubSeries BP7 Subwoofer","description":"\u003ch2\u003ePSB SubSeries BP7 Subwoofer at Vinyl Sound Buffalo NY\u003c\/h2\u003e\n\u003cp\u003eThe PSB SubSeries BP7 is a compact sealed subwoofer powered by a 350-watt Texas Instruments Class D amplifier, built around a bipolar dual 6.5-inch carbon fibre driver array that mounts two woofers in opposing positions to cancel cabinet vibration and deliver distortion-free bass from an enclosure measuring just 10.6\" × 11.4\" × 10.6\". Available at Vinyl Sound in Buffalo, New York, the BP7 is designed for music listeners and home theater systems in smaller rooms, dens, and apartments where a full-size subwoofer is impractical without sacrificing bass quality. The sealed cabinet extends low-frequency output to 25Hz at −10dB with a frequency response of 30Hz to 150Hz (±3dB), with a variable crossover from 50Hz to 150Hz and LFE setting at 350Hz. Controls for bass level, crossover frequency, and phase are mounted directly on the amplifier panel. Connections include gold-plated stereo RCA inputs, high-level speaker inputs, and a 12V trigger input for automatic on\/off with compatible receivers and amplifiers. The BP7 is available in Satin Black and Satin White with polished aluminium trim, and is part of Vinyl Sound Buffalo's full \u003ca href=\"https:\/\/vinylsound.com\/collections\/speakers\"\u003espeaker collection\u003c\/a\u003e, which includes subwoofers, bookshelf, powered, and floorstanding speakers from leading audiophile brands.\u003c\/p\u003e\n\n\u003ch2\u003eBipolar Dual 6.5\" Driver Array and Sealed Cabinet Design\u003c\/h2\u003e\n\u003cp\u003eThe BP7's two 6.5-inch woofers are mounted in opposing positions inside the sealed enclosure so that their mechanical forces work against each other, canceling the reactive energy that drives cabinet vibration in conventional single-driver subwoofer designs. Each 6.5-inch driver uses a woven carbon fibre cone, a high-density rubber surround, a 1½-inch (38mm) voice coil, and a 36 oz (1030g) magnet structure in a steel basket. The sealed cabinet prevents the port noise, group delay distortion, and passive radiator resonance found in ported designs, producing bass that decays quickly and accurately with program material rather than trailing behind transients. This combination of opposing driver cancellation and sealed cabinet design allows the BP7 to deliver tight, musical bass from a sub-1 cubic foot enclosure.\u003c\/p\u003e\n\n\u003ch2\u003eAmplifier, Controls, and Connectivity\u003c\/h2\u003e\n\u003cp\u003eThe BP7's 350-watt Texas Instruments Class D amplifier is paired with an Analog Devices DSP processor that manages crossover filtering and driver correction before the amplifier stage. Class D topology provides high amplifier efficiency in a compact chassis that does not require a large heatsink, keeping the BP7's overall cabinet size small. Bass level, crossover frequency (variable 50Hz–150Hz), and phase (switchable 0°\/180°) are adjusted from the rear amplifier panel. High-level speaker-level inputs allow connection from amplifiers without a dedicated subwoofer output. Gold-plated stereo RCA inputs accept low-level or line-level signals from an AV receiver's LFE or subwoofer output. The 12V trigger input enables auto power on\/off with compatible receivers and preamplifiers. Auto on\/standby activates on signal detection and returns to 0.5-watt standby in the absence of signal, meeting Energy Star compliance requirements. Universal voltage (100V–240V, 50\/60Hz) and included North American and EU power cords support international use.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eFrequency Response (±3dB)\u003c\/th\u003e\n\u003ctd\u003e30Hz – 150Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eLF Cutoff (−10dB)\u003c\/th\u003e\n\u003ctd\u003e25Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eContinuous Power\u003c\/th\u003e\n\u003ctd\u003e350 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eAmplifier Design\u003c\/th\u003e\n\u003ctd\u003eAnalog Devices DSP \u0026amp; Texas Instruments Class D\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eWoofer\u003c\/th\u003e\n\u003ctd\u003e6.5\" (152mm) Carbon Fibre Cone, High Density Rubber Surround, 1½\" (38mm) Voice-Coil, 36 oz (1030g) Magnet, Steel Basket (× 2, opposing bipolar)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eDesign Type\u003c\/th\u003e\n\u003ctd\u003eSealed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCrossover\u003c\/th\u003e\n\u003ctd\u003eVariable 50Hz – 150Hz; LFE Setting 350Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eControls\u003c\/th\u003e\n\u003ctd\u003eBass Level, Crossover, Phase Switch (Amplifier Panel)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eConnections\u003c\/th\u003e\n\u003ctd\u003eHigh Level Input, Low Level Input, Gold-plated Stereo RCAs, 12V Trigger Input\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eLED Indicator\u003c\/th\u003e\n\u003ctd\u003eRed = Standby, Green = On\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eAuto On\/Stand-by\u003c\/th\u003e\n\u003ctd\u003eYes (0.5W standby, Energy Star compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eAC Fuse\u003c\/th\u003e\n\u003ctd\u003eT10AL 250V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003eUniversal (100V–240V, 50\/60Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eDimensions (W × H × D)\u003c\/th\u003e\n\u003ctd\u003e10.6\" × 11.4\" × 10.6\" (270 × 290 × 270mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eNet Weight\u003c\/th\u003e\n\u003ctd\u003e26.5 lb (12 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e30 lb (13.6 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSatin Black, Satin White (Polished Aluminium Trim)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the bipolar driver design in the PSB BP7?\u003c\/h3\u003e\n\u003cp\u003eThe BP7 uses two 6.5-inch woofers mounted in opposing orientations inside the sealed cabinet. As the amplifier drives both woofers simultaneously, their mechanical motion moves in opposite directions. This cancels the reactive forces that would otherwise cause the cabinet to vibrate, which is a primary source of bass coloration and distortion in conventional single-driver subwoofer designs. The result is lower mechanical noise from the cabinet structure and tighter bass output at all playback levels, particularly in the upper bass frequencies where cabinet resonance is most audible.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the PSB BP7 compare to the BP8 and BP12?\u003c\/h3\u003e\n\u003cp\u003eAll three SubSeries subwoofers use the opposing bipolar dual driver design, a sealed cabinet, and a class D amplifier with Analog Devices DSP. The BP7 uses dual 6.5-inch drivers and 350 watts in a 10.6\" × 11.4\" × 10.6\" enclosure suited to smaller rooms and apartments. The BP8 uses larger dual 8-inch drivers and 500 watts in a 13\" cube enclosure for mid-size rooms, with a Hypex nCore amplifier that extends bass to 20Hz (−10dB) compared to the BP7's 25Hz. The BP12 uses dual 12-inch drivers with a Purifi amplifier rated at 1000 watts, adds Bluetooth app control via the PSB Subwoofer Control app, and extends bass to 17Hz (−10dB) for large rooms and dedicated home theater spaces.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I connect the PSB BP7 to my receiver or stereo amplifier?\u003c\/h3\u003e\n\u003cp\u003eThe BP7 provides three connection options. The most common is the gold-plated RCA low-level input, which connects directly from an AV receiver's dedicated subwoofer or LFE output. The high-level speaker input accepts a connection from an amplifier's speaker terminals for systems without a dedicated subwoofer output — this is particularly useful with two-channel stereo amplifiers or vintage receivers. The 12V trigger input enables automatic power on\/off when connected to a compatible AV receiver or preamplifier with a trigger output.\u003c\/p\u003e\n\n\u003ch3\u003eIs the PSB BP7 a good subwoofer for small rooms and apartments?\u003c\/h3\u003e\n\u003cp\u003eYes. The BP7's 10.6\" × 11.4\" × 10.6\" footprint is under one cubic foot in volume, making it practical for placement under side tables, in shelving units, or in corners of smaller living rooms, dens, and apartments. The sealed cabinet design avoids port noise that becomes more pronounced in smaller rooms where the subwoofer sits close to walls. The 30Hz–150Hz frequency response covers the bass range relevant to most music and film content without the very-low-frequency room pressurization associated with larger subwoofers in small spaces.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does the phase switch on the PSB BP7 do?\u003c\/h3\u003e\n\u003cp\u003eThe BP7's phase switch toggles the subwoofer output between 0° and 180°. When the subwoofer and main speakers are in phase (0°), their bass output adds constructively at the crossover frequency for maximum level and smoothest transition. When placement differences cause the bass to arrive at the listening position slightly out of time, switching phase to 180° can compensate and produce a smoother, more even response through the crossover range. The correct setting depends on subwoofer placement relative to the main speakers and is determined by listening — use whichever position produces the fullest, most even bass at the crossover frequency.\u003c\/p\u003e\n\n\u003ch3\u003eWhat finish options are available for the PSB BP7?\u003c\/h3\u003e\n\u003cp\u003eThe BP7 is available in Satin Black and Satin White, both with polished aluminium trim accents. The polished aluminium detailing distinguishes the BP7's appearance from standard all-matte or vinyl-wrapped subwoofer cabinets and complements PSB's Synchrony and Imagine series speaker finishes. The compact, clean cabinet profile is designed to blend into furnished living spaces without drawing visual attention to the subwoofer placement.\u003c\/p\u003e\n\n\u003ch3\u003eWhere to buy PSB SubSeries BP7 in Buffalo NY?\u003c\/h3\u003e\n\u003cp\u003eThe PSB SubSeries BP7 is available from Vinyl Sound, an authorized PSB Speakers dealer in Buffalo, New York. Vinyl Sound also carries the SubSeries BP8 and BP12 for larger room applications, allowing side-by-side comparison across the SubSeries range. Free shipping is available across the continental United States. Contact Vinyl Sound Buffalo by phone or email to purchase or arrange a demonstration.\u003c\/p\u003e","brand":"PSB Speakers","offers":[{"title":"Black","offer_id":53575899742515,"sku":null,"price":1249.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":53575899775283,"sku":null,"price":1249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/bp7_3-4_low_-_black.png?v=1782792434","url":"https:\/\/vinylsound.com\/products\/psb-subseries-bp7-subwoofer","provider":"Vinyl Sound USA","version":"1.0","type":"link"}