{"product_id":"psb-csiw-sub10-in-wall-subwoofer","title":"PSB CSIW SUB10 In-Wall Subwoofer","description":"\u003ch2\u003ePSB CSIW SUB10 10-Inch In-Wall Subwoofer at Vinyl Sound Buffalo NY\u003c\/h2\u003e\n\u003cp\u003eThe PSB CSIW SUB10 is a 10-inch in-wall subwoofer built around a single high-excursion driver with a glass fiber and PMI foam sandwich cone, dual rubber surround, die cast basket, and Balanced Drive motor structure, housed in a sealed MDF cabinet measuring 14 inches wide by 26 inches tall by 3⅞ inches deep. Available at Vinyl Sound in Buffalo, New York, the CSIW SUB10 is designed specifically for new construction installation — it mounts directly to wall stud beams via dual rubber-isolated mounting brackets rather than clamping to drywall from the front as retrofit in-wall speakers do. Direct stud beam connection provides a more rigid and acoustically controlled mounting platform than drywall clamping, and the rubber isolation brackets decouple the cabinet from the stud structure to prevent bass energy from transmitting through the building frame into adjacent rooms. The sealed MDF cabinet delivers a frequency response of 25Hz to 150Hz (±3dB), with 88dB anechoic sensitivity into an 8-ohm nominal impedance. The CSIW SUB10 is a passive subwoofer enclosure designed to pair with the PSB CS 500W architectural subwoofer amplifier, which includes a predefined DSP EQ profile calibrated for the CSIW SUB10 enclosure. A magnetic small-perforation metal grille covers the wall opening after installation. The CSIW SUB10 is part of Vinyl Sound Buffalo's full \u003ca href=\"https:\/\/vinylsound.com\/collections\/speakers\"\u003espeaker collection\u003c\/a\u003e, which includes in-wall subwoofer systems, in-ceiling speakers, on-wall speakers, and amplification from leading audio brands.\u003c\/p\u003e\n\n\u003ch2\u003eGlass Fiber \/ PMI Foam Sandwich Cone, Dual Rubber Surround, and Balanced Drive Motor\u003c\/h2\u003e\n\u003cp\u003eThe CSIW SUB10's 10-inch driver uses a sandwich cone construction — a composite diaphragm built from two thin skins of glass fiber laminated to a core of PMI foam. PMI (Polymethacrylimide) is a rigid closed-cell structural foam used in aerospace and high-performance speaker applications. When sandwiched between glass fiber skins, the PMI core creates a composite structure where the outer fiber layers carry bending stress and the foam core increases the cone's effective thickness and resistance to flexure — without adding significant mass. The result is a cone that is lighter than a solid fiberglass cone of equivalent stiffness, with a higher stiffness-to-mass ratio than carbon-filled or fiber-filled polypropylene cones of comparable size. For a high-excursion subwoofer driver, cone stiffness is critical because the cone must remain dimensionally consistent across large back-and-forth movements without flexing and adding harmonic distortion. The dual rubber surround is an unusual construction where two separate rubber surround rings — one at each end of the cone travel path — control the cone's motion. The dual surround allows significantly greater linear excursion range than a single surround provides, as each surround contributes compliance control at a different point in the driver's excursion cycle. The Balanced Drive motor structure maintains symmetrical electromagnetic force on the voice coil across the driver's full excursion range, reducing the motor asymmetry that generates second harmonic distortion at high output levels — the most audible form of subwoofer distortion in demanding home theater passages.\u003c\/p\u003e\n\n\u003ch2\u003eStud Beam Mounting, Rubber Isolation Brackets, and New Construction Design\u003c\/h2\u003e\n\u003cp\u003eThe CSIW SUB10 is designed for new construction installation only. Unlike the CSIW SUB28, which uses nylon dog ears to clamp to drywall from the front in a retrofit installation, the CSIW SUB10 mounts its MDF cabinet directly to the wall stud beams before drywall is applied. This mounting method provides a more rigid connection to the building structure and allows the installer to position the subwoofer precisely within the stud bay without constraint from an existing drywall cutout. The dual rubber-isolated mounting brackets are the critical isolation element: they are positioned between the MDF cabinet and the stud beams, physically decoupling the subwoofer enclosure from the wooden frame. Without isolation, the woofer's bass output would couple mechanically into the stud structure and transmit through the wall framing into adjacent rooms or floors — a significant issue in multi-room residential installations. The rubber brackets act as vibration dampers, absorbing bass energy at the cabinet-to-structure connection points and reducing flanking transmission. The grille is designed to accommodate various wall thicknesses — since the CSIW SUB10 is installed before drywall, the grille must bridge the gap between the enclosure face and the finished drywall surface regardless of the specific wall assembly used.\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\u003e25Hz – 150Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSensitivity (Anechoic)\u003c\/th\u003e\n\u003ctd\u003e88dB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSensitivity (Listening Room)\u003c\/th\u003e\n\u003ctd\u003e90dB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eImpedance Nominal\u003c\/th\u003e\n\u003ctd\u003e8 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eWoofer\u003c\/th\u003e\n\u003ctd\u003e10\" (254mm) Glass Fiber \/ PMI Foam Sandwich Cone, Die Cast Basket, Rubber Surround (Dual), Balanced Drive Motor Structure\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\u003eCabinet\u003c\/th\u003e\n\u003ctd\u003eMDF\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eGrille\u003c\/th\u003e\n\u003ctd\u003eMagnetic, Small Perforation Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eNet Width\u003c\/th\u003e\n\u003ctd\u003e14\" (356mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eNet Height\u003c\/th\u003e\n\u003ctd\u003e26\" (660mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eNet Depth\u003c\/th\u003e\n\u003ctd\u003e3⅞\" (98mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eInstallation Type\u003c\/th\u003e\n\u003ctd\u003eNew Construction Only (stud beam mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eDual Rubber-Isolated Mounting Brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCompatible Amplifier\u003c\/th\u003e\n\u003ctd\u003ePSB CS 500W (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eNet Weight\u003c\/th\u003e\n\u003ctd\u003eTBD\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 a glass fiber and PMI foam sandwich cone?\u003c\/h3\u003e\n\u003cp\u003eA sandwich cone is a composite diaphragm built from multiple material layers bonded together, similar to how structural composite panels are made in aerospace applications. In the CSIW SUB10, thin skins of woven glass fiber are laminated to both sides of a PMI foam core. PMI (Polymethacrylimide) is a rigid closed-cell structural foam — the same family of materials used in aircraft interior panels and satellite structures — that is extremely light relative to its stiffness. The outer glass fiber skins carry the tensile and compressive stresses that occur when the cone flexes, while the PMI core positions those skins farther apart from each other, dramatically increasing the cone's resistance to bending without adding significant mass. A sandwich composite cone of equivalent stiffness to a solid fiberglass cone is substantially lighter, which allows the driver to accelerate the cone faster for a given motor force — improving transient response and reducing distortion at high output levels. For a high-excursion 10-inch subwoofer driver, the sandwich cone's combination of stiffness, light weight, and internal damping from the foam core controls cone breakup resonances and maintains pistonic behavior across the full subwoofer frequency range.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is a dual rubber surround and why does the CSIW SUB10 use two surrounds instead of one?\u003c\/h3\u003e\n\u003cp\u003eA speaker driver's surround is the flexible ring connecting the outer edge of the cone to the basket frame. The surround's compliance — how easily it flexes — is one of the two main factors (along with the spider\/damper) that determine the driver's resonance frequency, linear excursion limit, and restoring force as the cone moves. A single surround can only provide a certain amount of linear compliance before it reaches the limits of its geometry and begins to add nonlinear distortion to the cone's motion. A dual rubber surround uses two separate surround rings — one at the front of the cone edge (the conventional position) and one at the rear of the cone or at a second attachment point — to share the mechanical compliance load across two elastic elements rather than one. This doubles the available linear range of motion before the suspension begins to behave nonlinearly, allowing the 10-inch driver to reach higher excursion values with lower distortion. For a high-excursion subwoofer driver like the CSIW SUB10, which must move large volumes of air to produce deep bass at high output levels, the dual surround is the mechanism that extends the driver's clean, low-distortion operating range beyond what a single surround provides.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is a Balanced Drive motor structure?\u003c\/h3\u003e\n\u003cp\u003eA standard speaker motor uses a single permanent magnet with a voice coil suspended in the magnetic gap. As the voice coil moves forward and backward in response to the audio signal, the motor should ideally generate a perfectly proportional force in both directions across the entire excursion range. In practice, as the voice coil moves to the extremes of its travel and the coil begins to exit the magnetic gap, the force decreases faster in one direction than the other — this asymmetry generates even-order harmonic distortion, primarily second harmonic, which adds a bass colorization that is audible as a blurring or softening of low-frequency transients. A Balanced Drive motor structure addresses this by designing the motor to generate symmetrical force in both the forward and backward directions through the coil's full excursion range. This can be achieved through dual opposing magnets, underhung or overhung voice coil geometry, or other motor design techniques that maintain flux density consistency across the coil's travel. In the CSIW SUB10, the Balanced Drive motor works in conjunction with the dual rubber surround to extend the driver's clean, low-distortion operating range — the motor maintains symmetrical force while the dual surround maintains linear compliance, allowing the 10-inch driver to produce deep bass at high output levels with minimal harmonic distortion.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the CSIW SUB10's stud beam mounting differ from retrofit in-wall installation?\u003c\/h3\u003e\n\u003cp\u003eThe CSIW SUB10 requires new construction installation — the subwoofer cabinet is physically attached to the wall stud beams before drywall is applied. The installer positions the CSIW SUB10 in the stud bay at the desired location, secures it to the studs via the dual rubber-isolated mounting brackets, and then applies drywall around the subwoofer. The grille opening is cut in the drywall during finishing. A retrofit in-wall speaker like the CSIW SUB28 uses a different approach: the installer cuts an opening in existing finished drywall, inserts the speaker enclosure through the opening, and tightens the dog ear clamps to grip the back of the drywall panel. The retrofit approach requires no access to the studs or wall cavity. The stud beam mounting of the CSIW SUB10 provides a mechanically stronger and more acoustically controlled connection than drywall clamping alone — the subwoofer cabinet is anchored to the primary structural element of the wall rather than to the finish panel. The rubber isolation brackets prevent the stud-mounted cabinet from transmitting bass energy into the building frame, which drywall clamping does not address at all.\u003c\/p\u003e\n\n\u003ch3\u003eWhat do the rubber-isolated mounting brackets prevent?\u003c\/h3\u003e\n\u003cp\u003eWhen a subwoofer cabinet is mounted rigidly to a wall's structural frame, the cabinet's vibration — generated by the woofer's back-and-forth cone motion — couples mechanically into the stud beams and transmits through the framing into adjacent floors, walls, and ceilings. This flanking path allows low-frequency energy to appear in rooms that are not directly connected to the room containing the subwoofer — a room on the other side of a wall, a floor above or below, or an adjacent bedroom. In a home theater installation, this flanking bass transmission is both acoustically objectionable (audible bass in quiet rooms) and structurally fatiguing over time. The CSIW SUB10's rubber-isolated mounting brackets interrupt this mechanical coupling path. The rubber isolators are positioned between the MDF cabinet mounting points and the stud beam contact surfaces, absorbing and dissipating vibration energy at the cabinet-to-frame connection rather than transmitting it into the structure. The result is a subwoofer that produces its bass output acoustically through the room opening while its cabinet vibrations are substantially decoupled from the building structure.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the CSIW SUB10 compare to the CSIW SUB28?\u003c\/h3\u003e\n\u003cp\u003eThe CSIW SUB10 and CSIW SUB28 are both in-wall passive subwoofers designed for the PSB CS 500W amplifier, but they differ significantly in driver configuration, installation method, enclosure material, and impedance. The CSIW SUB28 uses two 8-inch drivers with carbon fibre cones, rubber surrounds, and steel baskets in a metal sealed cabinet at 4-ohm nominal impedance, installs via drywall dog ear clamps in new or retrofit applications, and measures 13½ inches wide by 25⅜ inches tall. The CSIW SUB10 uses a single 10-inch driver with a glass fiber \/ PMI foam sandwich cone, dual rubber surround, die cast basket, and Balanced Drive motor in an MDF sealed cabinet at 8-ohm nominal impedance, installs via stud beam mounting in new construction only, and measures 14 inches wide by 26 inches tall. The CSIW SUB10's driver technology — sandwich cone, dual surround, die cast basket, Balanced Drive motor — is substantially more sophisticated than the CSIW SUB28's driver complement, and its frequency response of 25Hz (±3dB) extends lower than the CSIW SUB28. The CSIW SUB28 is the appropriate choice for retrofit applications or when new construction installation is not available; the CSIW SUB10 is the appropriate choice for new construction projects where maximum driver technology, deepest bass extension, and flanking isolation are the priorities.\u003c\/p\u003e\n\n\u003ch3\u003eWhere to buy the PSB CSIW SUB10 in-wall subwoofer in Buffalo NY?\u003c\/h3\u003e\n\u003cp\u003eThe PSB CSIW SUB10 is available from Vinyl Sound, an authorized PSB dealer in Buffalo, New York. Vinyl Sound also carries the PSB CS 500W subwoofer amplifier and the CSIW SUB28 retrofit in-wall subwoofer for customers comparing installation options. Free shipping is available across the continental United States. Contact Vinyl Sound Buffalo by phone or email to purchase the CSIW SUB10, discuss new construction subwoofer installation planning, or compare the CSIW SUB10 and CSIW SUB28 for your project.\u003c\/p\u003e","brand":"PSB Speakers","offers":[{"title":"Default Title","offer_id":53576076427571,"sku":null,"price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/csiw_sub_10_front_in_studs.png?v=1782796716","url":"https:\/\/vinylsound.com\/products\/psb-csiw-sub10-in-wall-subwoofer","provider":"Vinyl Sound USA","version":"1.0","type":"link"}