{ "id":1997248364611, "title":"Visaton K 28 WPC 8 Ohm, 1.1 Inch, Waterproof Miniature Speaker","handle":"visaton-k-28-wpc-8-ohm-1-1-inch-full-range-waterproof-miniature-speaker", "description":"\u003cp\u003eVisaton K 28 WPC · 8 Ω — manufacturer article 2809\u003c\/p\u003e\n\u003cp\u003eA 2.8 cm miniature speaker with a Mylar diaphragm for voice and signal output in small devices.\u003c\/p\u003e\n\u003cp\u003eThe K 28 WPC is a 2.8 cm miniature speaker with a plastic diaphragm (Mylar), 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 (25.5 mm behind the flange) and the unit is 5.4 mm deep overall, including the 1 mm flange, with a 16 mm magnet. Size the opening from the unit itself. The frame has no fixing holes, so it is normally bonded or clamped in place; check the method against your enclosure design and keep the clamping even all round. 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\u003eThis is the 8 Ω version; the 50 Ω version is part 2810. Check the impedance against the amplifier and the installation before ordering.\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_2809_2810.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-8-ohm\"\u003eCurrent manufacturer product page\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e", "published_at":"2019-01-10T12:36:44", "created_at":"2019-01-10T12:48:30", "vendor":"Visaton", "type":"Visaton Miniature Speakers", "tags":["Impedance_8 Ohm","Size_1.1 inch","Visaton Miniature Speakers","Waterproof"], "price":495, "price_min":495, "price_max":495, "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":[18487390502979], "variants":[{ "id":18487390502979, "product_id":1997248364611, "product_handle":"visaton-k-28-wpc-8-ohm-1-1-inch-full-range-waterproof-miniature-speaker", "title":"Default Title", "option1":"Default Title", "option2":null, "option3":null, "sku":"2809", "requires_shipping":true, "taxable":true, "featured_image":null,"image_id":null, "available":true, "name":"Visaton K 28 WPC 8 Ohm, 1.1 Inch, Waterproof Miniature Speaker - Default Title", "options":["Default Title"], "price":495, "weight":0, "compare_at_price":null, "inventory_quantity":-3, "inventory_management":null, "inventory_policy":"deny", "inventory_in_cart":0, "inventory_remaining":-3, "incoming":false, "next_incoming_date":null, "taxable":true, "barcode":null}], "available":true,"images":["\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpc_8_1_0.jpg?v=1547631030","\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpc_tz_171201_0.gif?v=1547631044","\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpc_8_fs_0.gif?v=1547631057"],"featured_image":"\/\/impactaudio.co.uk\/cdn\/shop\/products\/k28wpc_8_1_0.jpg?v=1547631030", "options":["Title"], "url":"\/products\/visaton-k-28-wpc-8-ohm-1-1-inch-full-range-waterproof-miniature-speaker"}