{ "id":1997231947843, "title":"Visaton K 28 WPC BL 8 Ohm, 1.1 Inch, Waterproof Miniature Speaker","handle":"visaton-k-28-wpc-bl-8-ohm-1-1-inch-full-range-miniature-speaker", "description":"\u003cp\u003eVisaton K 28 WPC BL · 8 Ω — manufacturer article 2806\u003c\/p\u003e\n\u003cp\u003eA 2.8 cm miniature speaker with a Mylar diaphragm and mounting ears for voice and signal output in small devices.\u003c\/p\u003e\n\u003cp\u003eThe K 28 WPC BL is a 2.8 cm miniature speaker with a plastic diaphragm (Mylar) and mounting ears, giving a balanced response and good voice reproduction in very small devices. It is functional at cold to EN 60068-2-1\/EN 50155, and its IP65 protection applies to the front when it is built into a sealed enclosure. This 8 Ω version handles 1 W and gives 76 dB (1 W\/1 m).\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitoring speaker for electronic devices\u003c\/li\u003e\n\u003cli\u003eVoice and signal output in small devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey selection facts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNominal size: 2.8 cm \/ 1.1 inch\u003c\/li\u003e\n\u003cli\u003eImpedance: 8 Ω\u003c\/li\u003e\n\u003cli\u003eRated power: 1 W\u003c\/li\u003e\n\u003cli\u003eProtection: IP65 — front side in a sealed enclosure\u003c\/li\u003e\n\u003cli\u003eSensitivity: 76 dB (1 W\/1 m)\u003c\/li\u003e\n\u003cli\u003eResonance: 700 Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation and compatibility\u003c\/h2\u003e\n\u003cp\u003eNo cut-out diameter is published for this driver: the round frame is 28 mm in diameter and carries two diagonally opposed mounting ears, 37.6 mm overall, with 3 mm holes on 32 mm centres; the unit is 5.5 mm deep overall, including the 0.7 mm flange, with a 16 mm magnet. Size the opening from the unit itself, and mark the holes from the unit rather than assuming the spacing. Leave clearance behind the panel for the solder joints and their leads.\u003c\/p\u003e\n\u003cp\u003eThe IP65 protection applies to the front of the driver only, and only when it is built into a sealed enclosure; the rear is open to the enclosure. Mount it on a flat panel with a continuous seal around the frame and protect the rear from water and dust; bonding the driver in and fitting a front cover or grille may be needed to complete the protection. Check that the panel face is clean and true where the seal beds down, and seal the cable entry as well, since the rear protection comes from the enclosure rather than from the driver. Operating temperature range −40 to 70 °C.\u003c\/p\u003e\n\u003cp\u003eSolder to the solder joints on the rear, observe polarity and keep the leads clear of the moving parts. Use a suitable iron and keep the soldering time short so that heat is not conducted into the driver. Support the leads so that they cannot pull on the joints. Use an amplifier suitable for the 8 Ω load and keep the drive within the 1 W rating (2 W maximum).\u003c\/p\u003e\n\u003cp\u003eThe K 28 WPC (parts 2809 and 2810) has the same technical data without the mounting ears. Choose this version where the ears give a convenient screw fixing, and the plain frame where the driver is bonded or clamped in place.\u003c\/p\u003e\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum power: 2 W\u003c\/li\u003e\n\u003cli\u003eNominal impedance: 8 Ω\u003c\/li\u003e\n\u003cli\u003eFrequency response (−10 dB): 300–20000 Hz\u003c\/li\u003e\n\u003cli\u003eMean sound pressure level: 76 dB (1 W\/1 m)\u003c\/li\u003e\n\u003cli\u003eResonance frequency fs: 700 Hz\u003c\/li\u003e\n\u003cli\u003eVoice coil diameter: 13.5 mm\u003c\/li\u003e\n\u003cli\u003eHeight of winding: 2 mm\u003c\/li\u003e\n\u003cli\u003eNet weight: 7 g\u003c\/li\u003e\n\u003cli\u003eTerminals: Solder joints\u003c\/li\u003e\n\u003cli\u003eProtective system: IP65 — front side in a sealed enclosure\u003c\/li\u003e\n\u003cli\u003eTemperature range: −40 to 70 °C\u003c\/li\u003e\n\u003cli\u003eDiaphragm: Mylar (plastic)\u003c\/li\u003e\n\u003cli\u003eLow-temperature test: Functional at cold to EN 60068-2-1 \/ EN 50155\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eManufacturer information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.visaton.de\/sites\/default\/files\/dd_product\/K%2028%20WPC%20BL_2806.pdf\"\u003eManufacturer datasheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.visaton.de\/en\/products\/drivers\/miniature-speakers\/k-28-wpc-bl-8-ohm\"\u003eCurrent manufacturer product page\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e", "published_at":"2019-01-10T12:22:23", "created_at":"2019-01-10T12:25:46", "vendor":"Visaton", "type":"Visaton Miniature Speakers", "tags":["Impedance_8 Ohm","Size_1.1 inch","Visaton","Waterproof Speakers: Waterproof Mini Speakers"], "price":395, "price_min":395, "price_max":395, "price_varies":false, "compare_at_price":null, "compare_at_price_min":0, "compare_at_price_max":0, "compare_at_price_varies":true, "all_variant_ids":[18487194550339], "variants":[{ "id":18487194550339, "product_id":1997231947843, "product_handle":"visaton-k-28-wpc-bl-8-ohm-1-1-inch-full-range-miniature-speaker", "title":"Default Title", "option1":"Default Title", "option2":null, "option3":null, "sku":"2806", "requires_shipping":true, "taxable":true, "featured_image":null,"image_id":null, "available":true, "name":"Visaton K 28 WPC BL 8 Ohm, 1.1 Inch, Waterproof Miniature Speaker - Default Title", "options":["Default Title"], "price":395, "weight":0, "compare_at_price":null, "inventory_quantity":-1, "inventory_management":null, "inventory_policy":"deny", "inventory_in_cart":0, "inventory_remaining":-1, "incoming":false, "next_incoming_date":null, "taxable":true, "barcode":null}], "available":true,"images":["\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpcbl_8_1_1.jpg?v=1547123161","\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpc_bl_tz_171201.gif?v=1547123185","\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpcbl_8_fs_1.gif?v=1547123197"],"featured_image":"\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpcbl_8_1_1.jpg?v=1547123161", "options":["Title"], "url":"\/products\/visaton-k-28-wpc-bl-8-ohm-1-1-inch-full-range-miniature-speaker"}