{"product_id":"psb-cs805-8-in-ceiling-speaker","title":"PSB CS805 8\" In-Ceiling Speaker","description":"\u003ch2\u003ePSB CS805 8\" In-Ceiling Speaker at Vinyl Sound Buffalo NY\u003c\/h2\u003e\n\u003cp\u003eThe PSB CS805 is an entry-level 8-inch open-back in-ceiling speaker designed for multi-room and whole-home audio installations, built around an 8-inch polypropylene cone woofer with a stamped steel basket and foam surround, and a 1-inch treated textile dome tweeter with ferrofluid cooling. Available at Vinyl Sound in Buffalo, New York, the CS805 delivers a frequency response of 48Hz to 20,000Hz (±3dB) at 85dB anechoic sensitivity into a nominal 8-ohm load, accepting 10–100 watts of amplifier power. A 1st-order high-pass crossover filters the tweeter's low-frequency signal for driver protection and smooth transition from the woofer. The open-back design uses the ceiling plenum as the acoustic chamber. The CS805 shares the same 9¾-inch (245mm) round mounting cutout and 4⅜-inch mounting depth as the CS850, CS810, and CS AIC 860, making it interchangeable in the same rough-in opening. Both round (10⅝\") and square magnetic frameless grilles are included. The CS805 is available in a 4-pack only — a format designed for whole-home audio and multi-room installations where multiple speakers are required per zone. The CS805 is part of Vinyl Sound Buffalo's full \u003ca href=\"https:\/\/vinylsound.com\/collections\/speakers\"\u003espeaker collection\u003c\/a\u003e, which includes in-ceiling, in-wall, outdoor, powered, and floorstanding speakers from leading audio brands.\u003c\/p\u003e\n\n\u003ch2\u003eTreated Textile Tweeter, 8\" Woofer, and Simplified Crossover\u003c\/h2\u003e\n\u003cp\u003eThe CS805 uses a treated textile dome tweeter — the same broad tweeter category found in many audiophile-grade stand-mount speakers — rather than the titanium dome specified in the CS850 and CS810. Textile dome tweeters apply a fabric dome impregnated with a damping compound that softens the dome's resonant frequency above 20kHz, producing a smooth high-frequency rolloff rather than the sharp resonant peak that untreated metal domes can exhibit. The ferrofluid cooling in the textile dome's voice coil gap extends its continuous output capability and thermal capacity at sustained playback levels. The 8-inch polypropylene cone woofer uses a stamped steel basket and foam surround, providing reliable cone suspension across the woofer's operating range. The 1st-order high-pass crossover filters the tweeter input at 6dB per octave, a simpler network than the 24dB per octave LR4 crossover used in the CS850 and CS810. The simpler crossover reduces the parts count and associated costs while maintaining adequate driver protection and a usable frequency response through the crossover region.\u003c\/p\u003e\n\n\u003ch2\u003e4-Pack Format, DIY Installation, and Grille Options\u003c\/h2\u003e\n\u003cp\u003eThe CS805 is sold exclusively as a 4-pack, positioned for whole-home audio installations where multiple speakers are needed across several rooms or zones at a lower per-unit cost than individual CS810 or CS850 purchases. Four CS805 speakers cover a typical two-zone whole-home audio installation — two speakers per room — at a consolidated price that makes the CS805 the practical entry point for multi-room PSB in-ceiling system builds. The dogleg mounting system clamps the speaker to the drywall without above-ceiling access: the speaker is inserted through the 9¾-inch cutout from below, the doglegs are tightened, and the magnetic frameless grille attaches to the face without visible screws or frame borders. At 3.25 lb (1.47 kg) per speaker, single-person installation is straightforward. Both a round (10⅝\" diameter) and a square magnetic frameless grille are included with each speaker in the pack.\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\u003e48Hz – 20,000Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSensitivity (Anechoic)\u003c\/th\u003e\n\u003ctd\u003e85dB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSensitivity (Listening Room)\u003c\/th\u003e\n\u003ctd\u003e87dB\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\u003eImpedance Minimum\u003c\/th\u003e\n\u003ctd\u003e6 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eRecommended Power\u003c\/th\u003e\n\u003ctd\u003e10–100 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eTweeter\u003c\/th\u003e\n\u003ctd\u003e1\" (25mm) Treated Textile Dome, Ferrofluid\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eWoofer\u003c\/th\u003e\n\u003ctd\u003e8\" (203mm) Polypropylene Cone, Stamped Steel Basket, Foam Surround\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCrossover\u003c\/th\u003e\n\u003ctd\u003e1st Order High Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eDesign Type\u003c\/th\u003e\n\u003ctd\u003eOpen Back\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eGrilles Included\u003c\/th\u003e\n\u003ctd\u003eRound and Square Magnetic Frameless (White)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCutout Diameter\u003c\/th\u003e\n\u003ctd\u003e9¾\" (245mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMounting Depth\u003c\/th\u003e\n\u003ctd\u003e4⅜\" (111mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eRound Grille Diameter\u003c\/th\u003e\n\u003ctd\u003e10⅝\" (270mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eNet Weight\u003c\/th\u003e\n\u003ctd\u003e3.25 lb (1.47 kg) each\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eAvailability\u003c\/th\u003e\n\u003ctd\u003e4-Pack Only\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhy is the CS805 sold as a 4-pack?\u003c\/h3\u003e\n\u003cp\u003eThe CS805's 4-pack format is designed for multi-room and whole-home audio installations where the standard deployment is two speakers per listening zone — a stereo pair per room. A 4-pack covers a complete two-zone installation, such as a living room and a kitchen, at a consolidated price that is lower per speaker than purchasing individual CS810 or CS850 units. For installers and homeowners building out a connected whole-home audio system across multiple zones, the 4-pack format provides better value than single-speaker purchase at the cost of requiring a minimum commitment of four units. If fewer than four speakers are needed, the CS810 or CS850 are available individually at Vinyl Sound Buffalo.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is a treated textile dome tweeter and how does it differ from a titanium dome?\u003c\/h3\u003e\n\u003cp\u003eA textile dome tweeter uses a fabric dome — typically woven from polymer or natural fibers — impregnated with a damping compound that suppresses the dome's primary resonance frequency above the audible range. The damping compound prevents the sharp resonant peak that occurs when an untreated thin dome reaches its mechanical resonance, producing a smoother, more gradual high-frequency rolloff. Titanium dome tweeters, used in the CS850 and CS810, are stiffer and lighter than textile domes, which pushes the resonant frequency higher and extends usable on-axis frequency response toward 23–25kHz. The practical listening difference is that titanium dome tweeters can sound more detailed and extended at the highest frequencies, while textile dome tweeters are generally considered more forgiving and less prone to sounding harsh on bright recordings. For background music and whole-home audio at moderate volumes, the CS805's textile dome tweeter is appropriate; for critical home theater or dedicated listening room use, the CS850's titanium dome is the higher-performance choice.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the CS805 compare to the CS810 and CS850?\u003c\/h3\u003e\n\u003cp\u003eAll three use an 8-inch polypropylene cone woofer, the same 9¾-inch round cutout, 85–86dB sensitivity range, 8-ohm nominal impedance, and 10–100 watt power range. The CS805 uses a treated textile dome tweeter (vs titanium dome on CS810 and CS850) and a 1st-order high-pass crossover (vs the LR4 4th-order crossover at 3,100Hz on both the CS810 and CS850). The CS805 has no EQ adjustment switches — the CS850 provides individual tweeter and woofer level switches, and the CS810 provides a single HF level switch. The CS805 also has no tweeter wave guide or pivot adjustment. It is sold in 4-packs only versus individual units for the CS810 and CS850. The CS805 is the entry-level, highest-volume option for whole-home audio; the CS810 adds a high-temperature voice coil, ball-joint tweeter pivot, and HF switch; the CS850 adds an indexed wave guide tweeter, dual EQ switches, and higher sensitivity.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does a 1st-order high-pass crossover mean for the CS805?\u003c\/h3\u003e\n\u003cp\u003eA 1st-order high-pass crossover applies a 6dB per octave rolloff to the tweeter's low-frequency input, reducing the signal level sent to the tweeter as frequency decreases below the crossover point. This protects the tweeter from low-frequency excursion damage and reduces distortion from driving the dome at frequencies below its optimal range. A 1st-order filter is simpler and uses fewer components than the 4th-order LR4 filter (24dB per octave) used in the CS850 and CS810. The simpler network contributes to the CS805's lower production cost and the cleaner phase response associated with lower-order crossovers. The woofer in a 1st-order crossover design typically operates without a dedicated low-pass filter, relying on its natural mechanical rolloff above its resonant frequency to limit high-frequency output.\u003c\/p\u003e\n\n\u003ch3\u003eIs the CS805 suitable for home theater surround channels?\u003c\/h3\u003e\n\u003cp\u003eThe CS805 is usable for home theater surround channels — particularly rear and side surrounds in 5.1 and 7.1 configurations where the surround channels primarily reproduce diffuse ambient effects and low-level directional audio cues rather than dialogue or primary audio content. For front LCR channels in a home theater system, the CS850 or CS810 are preferred due to their titanium dome tweeters, LR4 crossovers, and EQ adjustment switches, which provide better imaging and tonal control for dialogue and music reproduction. The CS805's 48Hz–20kHz frequency response and 85dB sensitivity are adequate for surround channel use in rooms where the primary listening distance from the ceiling to the seated listener is within the speaker's practical output range.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the CS805 use the same mounting hole as the CS850 and CS810?\u003c\/h3\u003e\n\u003cp\u003eYes. The CS805 uses the same 9¾-inch (245mm) round cutout as the CS850, CS810, and CS AIC 860. This allows any of the four PSB in-ceiling models to be installed in the same rough-in opening, which is useful if a whole-home installation begins with CS805 units and is later upgraded to CS810 or CS850 speakers in a particular room without cutting new holes. The CS805's mounting depth is 4⅜ inches (111mm), the same as the CS850 and slightly shallower than the CS810's 5 inches, so the same ceiling cavity clearance works for both.\u003c\/p\u003e\n\n\u003ch3\u003eWhere to buy PSB CS805 in-ceiling speakers in Buffalo NY?\u003c\/h3\u003e\n\u003cp\u003eThe PSB CS805 is available in a 4-pack from Vinyl Sound, an authorized PSB Speakers dealer in Buffalo, New York. Vinyl Sound also carries the CS810 and CS850 for installations requiring individual speaker purchase or upgraded performance. Free shipping is available across the continental United States. Contact Vinyl Sound Buffalo by phone or email to purchase the CS805 4-pack or compare it to other PSB in-ceiling options for your multi-room audio project.\u003c\/p\u003e","brand":"PSB Speakers","offers":[{"title":"Default Title","offer_id":53575990411571,"sku":null,"price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/CS805-_-8-In-Ceiling-Speaker.png?v=1782794538","url":"https:\/\/vinylsound.com\/products\/psb-cs805-8-in-ceiling-speaker","provider":"Vinyl Sound USA","version":"1.0","type":"link"}