{"product_id":"lowell-4a30-coaxial-speaker-4","title":"Lowell 4A30 Coaxial Speaker - 4in","description":"\u003cp\u003e\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003eThe coaxial 4” (EIA 5”) driver shall be Lowell Model 4A30. It shall have a high frequency transducer (tweeter with 1” dia. balanced drive dome) and low frequency transducer (4” dia. polypropylene cone). A built-in electrical crossover network shall be employed for proper frequency divisions. Crossover frequency shall be at 5kHz with a first order high-pass filter. The 4A30 shall be capable of producing a uniform audible frequency response over the range of 81Hz-20kHz (+6dB); 50Hz-20kHz (+8.1dB) with dispersion angle of 135 degrees @2000Hz -6dB. Average sensitivity shall measure 87.8dB (SPL at 1W\/1M). Power rating shall be 30 watts (EIA 426B). The low frequency voice\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003ecoil shall have 1″ diameter and operate in a magnetic field derived from a ferrite (ceramic) magnet with nominal weight of 10 oz. The high frequency voice coil shall have a 0.53″ dia. and operate in a magnetic field derived from a Neodymium magnet with nominal weight of 0.06 oz. Voice coil impedance shall be 8 ohms. The assembly shall have a round, structurally reinforced, stamped 20-gauge steel frame to maintain precise mechanical alignment. Overall diameter shall be 5″ with four round and four obround holes equally spaced on a 4.66″ dia. mounting bolt circle. Mounting depth shall not exceed 2.25″. External metal parts shall be finished in black enamel paint or zinc plating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"Apple-converted-space\"\u003eSpecifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDescription:  4 in. 30W coaxial driver with 10 oz. magnet, 1″ copper voice coil, and polypropylene cone with half-roll rubber surround for long cone travel and good edge damping\u003c\/li\u003e\n\u003cli\u003eBasket:  20-ga. stamped steel, black enamel paint\u003c\/li\u003e\n\u003cli\u003eMounting Depth: 2.25 in.\u003c\/li\u003e\n\u003cli\u003eMounting Bolt Circle:  4.66 in.\u003c\/li\u003e\n\u003cli\u003eDispersion Angle:  135 degrees conical\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 81Hz-20kHz (±6dB); 50Hz-20kHz (±8.1dB)\u003c\/li\u003e\n\u003cli\u003eAverage Sensitivity:  87.8dB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lowell","offers":[{"title":"Default Title","offer_id":42425469665359,"sku":"4A30","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/9466\/9382\/files\/4A30-a-1.webp?v=1737737896","url":"https:\/\/shop.musicredone.com\/products\/lowell-4a30-coaxial-speaker-4","provider":"RedOne Music Canada","version":"1.0","type":"link"}