{"product_id":"qtx-passive-subwoofer-filter-120hz-4-ohms","title":"QTX Passive Subwoofer Filter, 120Hz, 4 Ohms","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThis passive subwoofer filter from QTX is built for Hi-Fi and PA loudspeaker systems where you need to send low frequencies to the right driver. It works as a low-pass crossover, letting bass through while rolling off higher frequencies so your subwoofer only handles the content it is meant to reproduce. Being passive, it sits inline in the speaker circuit and needs no external power.\u003c\/p\u003e\n\u003cp\u003eThe crossover frequency is fixed at 120Hz, with a damping factor of 12dB per octave. That slope gives a steady roll-off above the crossover point, which keeps mid and high frequencies out of the sub and helps the whole system sound cleaner. It is rated at 4 Ohms and handles up to 600W, so it suits a good range of loudspeaker builds and cabinet projects.\u003c\/p\u003e\n\u003cp\u003eConnections are made by solder terminals, which give you a solid, permanent join once the filter is wired into your build. This is a component part rather than a finished unit, so it is aimed at anyone assembling or repairing a speaker system. If you are matching it to a driver, check that the impedance and power figures line up with your subwoofer before you fit it.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower rms\u003c\/td\u003e\n\u003ctd\u003e320W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower peak\u003c\/td\u003e\n\u003ctd\u003e600W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping\u003c\/td\u003e\n\u003ctd\u003e12dB\/Oct.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e120Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e4 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a passive or active filter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is a passive filter, so it wires directly into the speaker circuit and needs no external power or amplifier of its own.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the crossover frequency?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe crossover frequency is fixed at 120Hz, with a 12dB per octave slope above that point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat impedance and power can it handle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is rated at 4 Ohms and handles up to 600W, so check your driver matches these figures before fitting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I connect it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConnections are made by solder terminals, giving a permanent join once wired into your speaker build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt routes low frequencies to a subwoofer in Hi-Fi and PA loudspeaker systems, keeping mid and high content out of the sub.\u003c\/p\u003e\n","brand":"AVSL","offers":[{"title":"Default Title","offer_id":53272096604427,"sku":"900.584UK","price":13.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/900584UK_0.jpg?v=1785046777","url":"https:\/\/niori.co.uk\/products\/qtx-passive-subwoofer-filter-120hz-4-ohms","provider":"Niori","version":"1.0","type":"link"}