{"product_id":"jbl-mtc-300bb12","title":"JBL MTC-300BB12 3 Cu. Ft. Backbox for Control 300 Series Ceiling Speakers","description":"\u003cp\u003eThe JBL MTC-300BB12 is a 3 cu. ft. backbox for the 12 in. Control 300 Series ceiling speakers: the Control 321C, 321CT, 322C, 322CT and 312CS. It is made of extra-thick 16 gauge steel, and a 12 mm (1\/2 in.) MDF lining damps resonances and adds bass response.\u003c\/p\u003e\u003cp\u003eA dual mounting system holds the baffle. Inside, a platform with preinstalled studs takes the optional MTC-300T150 70V\/100V transformer.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eExtra-thick 16 gauge steel\u003c\/li\u003e\n\u003cli\u003e12 mm (1\/2 in.) MDF lining damps resonances\u003c\/li\u003e\n\u003cli\u003eKnockouts on the top and all four sides\u003c\/li\u003e\n\u003cli\u003eDual mounting system for the baffle\u003c\/li\u003e\n\u003cli\u003eMounting platform for the optional MTC-300T150 transformer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Control 321C, 321CT, 322C, 322CT, 312CS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Volume:\u003c\/strong\u003e 3 cu. ft. nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Volume:\u003c\/strong\u003e 2.4 cu. ft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnockouts:\u003c\/strong\u003e 5 x 22.1 mm (0.87 in.): one on the top, one on each side and end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 308 mm (12.1 in.) above the ceiling; 324 mm (12.6 in.) total\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 587 mm (23.1 in.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 461 mm (18.2 in.) cabinet; 505 mm (19.9 in.) including side tabs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeiling Cutout:\u003c\/strong\u003e 378 x 378 mm (14.9 x 14.9 in.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Agency Rating:\u003c\/strong\u003e Suitable for air handling spaces per UL2043, UL1480, NFPA 90 and NFPA 70A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e 20.6 kg (45.5 lb)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIn the Box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMTC-300BB12 backbox\u003c\/li\u003e\n\u003cli\u003e4 x M4 x 14 mm machine screws for one baffle mounting method\u003c\/li\u003e\n\u003cli\u003e6 x #10 x 0.75 in. (19 mm) sheet metal screws for the other baffle mounting method\u003c\/li\u003e\n\u003cli\u003e4 x M4 nuts for mounting the optional transformer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JBL","offers":[{"title":"Default Title","offer_id":67645539483897,"sku":"MTC-300BB12","price":599.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5766\/1177\/files\/MTC-300BB12.jpg?v=1794261833","url":"https:\/\/blackoutaudio.com\/products\/jbl-mtc-300bb12","provider":"Blackout Audio","version":"1.0","type":"link"}