{"product_id":"ctx-3305-or-optic-fiber-decoder-or-bmw-1-serie-or","title":"CTX-3305 | Fiber optic decoder | BMW 1 Series | BMW 3 Series | BMW 5 Series","description":"\u003cp data-start=\"240\" data-end=\"586\"\u003eThe \u003cstrong data-start=\"243\" data-end=\"275\"\u003eCTX-3305 Optical Fiber Decoder\u003c\/strong\u003e allows you to connect an aftermarket Android car radio to the \u003cstrong data-start=\"387\" data-end=\"428\"\u003eoriginal Top-HiFi sound system\u003c\/strong\u003e in your \u003cstrong data-start=\"437\" data-end=\"444\"\u003eBMW\u003c\/strong\u003e in a neat and hassle-free way. Thanks to this decoder, which utilizes the \u003cstrong data-start=\"492\" data-end=\"538\"\u003eoriginal fiber optic connection\u003c\/strong\u003e, you do not need to route any cables through the car.\u003c\/p\u003e\n\u003cp data-start=\"588\" data-end=\"741\"\u003eAs a result, you retain the original amplifier and speakers while still being able to enjoy the latest infotainment features of an aftermarket car radio.\u003c\/p\u003e\n\u003cp data-start=\"743\" data-end=\"802\"\u003e\u003cstrong\u003eThis fiber optic decoder is suitable for BMW models with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"921\" data-end=\"1103\"\u003eBMW 1 Series (E81 \/ E82 \/ E87 \/ E88) – 2004 to 2010\u003cbr data-start=\"972\" data-end=\"975\"\u003eBMW 3 Series (E39 \/ E46 \/ E90 \/ E91 \/ E92 \/ E93) – 2006 to 2011\u003cbr data-start=\"1038\" data-end=\"1041\"\u003eBMW 5 Series (E53 \/ E60 \/ E61)\u003cbr data-start=\"1070\" data-end=\"1073\"\u003eBMW X5 (E70) – 2007 to 2013\u003c\/p\u003e\n\u003cp data-start=\"1105\" data-end=\"1190\"\u003e✅ Only suitable for vehicles with \u003cstrong data-start=\"1143\" data-end=\"1190\"\u003eTop-HiFi audio via fiber optic (MOST system)\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"1192\" data-end=\"1195\"\u003e\n\u003ch3 data-start=\"1197\" data-end=\"1241\"\u003eHow does the car radio Fiber Optic Decoder work?\u003c\/h3\u003e\n\u003cp data-start=\"1243\" data-end=\"1540\"\u003eThe \u003cstrong data-start=\"1246\" data-end=\"1258\"\u003eCTX-3305\u003c\/strong\u003e converts the digital audio signal that travels via the fiber optic cable from the amplifier to the speakers into a signal usable by an aftermarket radio. This keeps the original speakers and amplifier fully active, while the audio source is replaced by your new car radio.\u003c\/p\u003e\n\u003cp data-start=\"1542\" data-end=\"1674\"\u003eThis allows you to switch to Android, CarPlay, or other modern systems without making any modifications to the original wiring.\u003c\/p\u003e\n\u003chr data-start=\"1676\" data-end=\"1679\"\u003e\n\u003ch3 data-start=\"1681\" data-end=\"1716\"\u003eWhen is the CTX-3305 required?\u003c\/h3\u003e\n\u003cp data-start=\"1718\" data-end=\"1769\"\u003eThe images show two situations:\u003c\/p\u003e\n\u003cp data-start=\"1771\" data-end=\"2047\"\u003e\u003cstrong data-start=\"1771\" data-end=\"1786\"\u003eSituation 1:\u003c\/strong\u003e The green fiber optic cable is present and traditional speaker wires are missing. In this case, \u003cstrong data-start=\"1878\" data-end=\"1909\"\u003ethe CTX-3305 is necessary\u003c\/strong\u003e.\u003cbr data-start=\"1910\" data-end=\"1913\"\u003e\u003cstrong data-start=\"1913\" data-end=\"1928\"\u003eSituation 2:\u003c\/strong\u003e Traditional speaker connections are present and \u003cstrong data-start=\"1984\" data-end=\"2002\"\u003ethere is no fiber optic\u003c\/strong\u003e. In this case, \u003cstrong data-start=\"2017\" data-end=\"2046\"\u003ethe CTX-3305 is not needed\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"2049\" data-end=\"2052\"\u003e\n\u003ch3 data-start=\"2054\" data-end=\"2082\"\u003eConnection \u0026amp; Installation\u003c\/h3\u003e\n\u003cp data-start=\"2084\" data-end=\"2387\"\u003eThe fiber optic connection is usually \u003cstrong data-start=\"2119\" data-end=\"2138\"\u003egreen in color\u003c\/strong\u003e and is located at the rear of the original factory radio. The \u003cstrong data-start=\"2209\" data-end=\"2221\"\u003eCTX-3305\u003c\/strong\u003e is installed behind the aftermarket radio and connected directly to both the car radio and the fiber optic cable. No cables need to be run to the amplifier.\u003c\/p\u003e\n\u003cp data-start=\"2389\" data-end=\"2539\"\u003eThe installation is technically simple but requires basic knowledge of car systems. The decoder comes with clear labels for connection.\u003c\/p\u003e\n\u003cp data-start=\"2541\" data-end=\"2702\"\u003eThis product is \u003cstrong data-start=\"2556\" data-end=\"2621\"\u003eonly required for BMW models with Top-HiFi via fiber optic\u003c\/strong\u003e. If you do not have an original premium audio system, the CTX-3305 is not necessary.\u003c\/p\u003e\n\u003chr data-start=\"2704\" data-end=\"2707\"\u003e\n\u003ch3 data-start=\"2709\" data-end=\"2738\"\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp data-start=\"2740\" data-end=\"2882\"\u003e\u003cstrong data-start=\"2740\" data-end=\"2791\"\u003eDo all original speakers work with the CTX-3305?\u003c\/strong\u003e\u003cbr data-start=\"2791\" data-end=\"2794\"\u003eYes, all original speakers remain fully functional via the fiber optic channel.\u003c\/p\u003e\n\u003cp data-start=\"2884\" data-end=\"3058\"\u003e\u003cstrong data-start=\"2884\" data-end=\"2931\"\u003eCan I control each speaker individually?\u003c\/strong\u003e\u003cbr data-start=\"2931\" data-end=\"2934\"\u003eNo. Control occurs via a single shared fiber optic channel. Individual speaker control per channel is not possible.\u003c\/p\u003e\n\u003cp data-start=\"3060\" data-end=\"3219\"\u003e\u003cstrong data-start=\"3060\" data-end=\"3103\"\u003eIs the original amplifier retained?\u003c\/strong\u003e\u003cbr data-start=\"3103\" data-end=\"3106\"\u003eYes, the original BMW amplifier (Harman Kardon \/ Logic 7 \/ Individual \/ Enhanced Premium) remains fully active.\u003c\/p\u003e\n\u003cp data-start=\"3221\" data-end=\"3372\"\u003e\u003cstrong data-start=\"3221\" data-end=\"3270\"\u003eDo I need to route cables to an amplifier?\u003c\/strong\u003e\u003cbr data-start=\"3270\" data-end=\"3273\"\u003eNo, that is not necessary. The connection is made entirely behind the radio via the fiber optic link.\u003c\/p\u003e\n\u003cp data-start=\"3374\" data-end=\"3503\"\u003e\u003cstrong data-start=\"3374\" data-end=\"3415\"\u003eIs the decoder suitable for every BMW?\u003c\/strong\u003e\u003cbr data-start=\"3415\" data-end=\"3418\"\u003eNo, only for the listed models with \u003cstrong data-start=\"3465\" data-end=\"3502\"\u003eTop-HiFi and MOST fiber optic system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3505\" data-end=\"3666\"\u003e\u003cstrong data-start=\"3505\" data-end=\"3562\"\u003eCan I connect any aftermarket car radio with this?\u003c\/strong\u003e\u003cbr data-start=\"3562\" data-end=\"3565\"\u003eYes, the CTX-3305 is suitable for all common aftermarket Android car radios with an RCA audio output.\u003c\/p\u003e\n\u003chr data-start=\"3668\" data-end=\"3671\"\u003e\n\u003ch3 data-start=\"3673\" data-end=\"3699\"\u003eImportant to know\u003c\/h3\u003e\n\u003cp data-start=\"3701\" data-end=\"3944\"\u003eThis item is only necessary if your \u003cstrong data-start=\"3749\" data-end=\"3756\"\u003eBMW\u003c\/strong\u003e is equipped with an \u003cstrong data-start=\"3778\" data-end=\"3834\"\u003eoriginal Top-HiFi audio system with fiber optic (MOST)\u003c\/strong\u003e. Without this system, the decoder is not needed and a standard connection will work simply via speaker wires.\u003c\/p\u003e","brand":"Cartronix","offers":[{"title":"Standaard","offer_id":54957306773850,"sku":"CTX-3305","price":139.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/0730\/2490\/files\/CTX-3305_4.png?v=1791661179","url":"https:\/\/cartronix.eu\/en\/products\/ctx-3305-or-optic-fiber-decoder-or-bmw-1-serie-or","provider":"Cartronix.eu","version":"1.0","type":"link"}