{"product_id":"sonifex-rb-mm1-mix-minus-generator","title":"Sonifex RB-MM1 | Mix-Minus Generator","description":"\u003cp\u003eWhenever programming originates from outside of the studio, or if listeners\/viewers are calling up a phone-in using telephone hybrids or codecs, mix-minus feeds are required. Most telephone lines incur delays which prohibit off-air monitoring, because the caller, or remote talent, would hear their own voice in delay which is very disconcerting. The solution is to feed a mix back to the caller minus his or her own voice. Some mixing desks do not have a dedicated telco channel to generate a clean-feed, or mix minus, so the RB-MM1 can be used. The RB-MM1 is a unit for generating a suitable mix to send to a telephone hybrid or codec. A stereo output is taken from a mixer, together with a post fader output from the mono telephone fader on the mixer. The caller audio is removed from the station output so that it can be sent to the telephone line via the hybrid.\u003c\/p\u003e\u003ch3\u003eProduct Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSimple clean feed \/ mix minus generation.\u003c\/li\u003e\n\u003cli\u003eNeutrik XLR-3 balanced line connections.\u003c\/li\u003e\n\u003cli\u003eOutput level adjustment.\u003c\/li\u003e\n\u003cli\u003eCancellation null adjustment.\u003c\/li\u003e\n\u003cli\u003eBand pass filter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cp\u003eUsed with mixers without mix-minus buses.\u003c\/p\u003e\u003ch3\u003eProduct Category\u003c\/h3\u003e\u003cp\u003eTelephone Mix Minus Generators\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ch4\u003eAudio Specification\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Input Level:\u003c\/strong\u003e +28dBu\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e \u0026gt;20kΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Output Level:\u003c\/strong\u003e +28dBu\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e \u0026lt;50Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Gain Range:\u003c\/strong\u003e Adjustable -15dB to +12dB, ref 0dBu gain via a multi-turn pot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Mode Rejection:\u003c\/strong\u003e \u0026gt;60dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand Pass Filter Range:\u003c\/strong\u003e 200Hz to 4kHz, 12dB\/octave\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLF Null Adjustment:\u003c\/strong\u003e Better than 40dB at 100Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMix-Minus Null:\u003c\/strong\u003e Better than 40dB at 1kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20Hz - 22kHz ± 0.1dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistortion:\u003c\/strong\u003e 0.01% THD @ 1kHz, ref +8dBu output (C-Message weighted)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise:\u003c\/strong\u003e -90dBu unity gain +6dBu\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eConnections\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalogue Inputs From Mixer Output:\u003c\/strong\u003e 2 x XLR 3 pin female (balanced) (L \u0026amp; R)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalogue Input From Telephone Fader:\u003c\/strong\u003e 1 x XLR 3 pin female (balanced) (L \u0026amp; R)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalogue Output To TBU:\u003c\/strong\u003e 1 x XLR 3 pin male (balanced) (L \u0026amp; R)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMains Input:\u003c\/strong\u003e Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Rating:\u003c\/strong\u003e Anti-surge fuse 100mA 20 x 5mm (230VAC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Rating:\u003c\/strong\u003e Anti-surge fuse 250mA 20 x 5mm (115VAC)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eEquipment Type\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eRB-MM1:\u003c\/strong\u003e Mix-minus generator\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003ePhysical Specification\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (Raw):\u003c\/strong\u003e 28cm (W) x 10.8cm (D) x 4.3cm (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (Raw):\u003c\/strong\u003e 11” (W) x 4.3” (D) x 1.7” (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (Boxed):\u003c\/strong\u003e 36cm (W) x 20.5cm (D) x 6cm (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (Boxed):\u003c\/strong\u003e 14.2” (W) x 8” (D) x 2.4” (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Nett: 1.1kg Gross: 1.5kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Nett: 2.4lbs Gross: 3.3lbs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSupport and Downloads\u003c\/h3\u003e\u003ch4\u003eHandbooks \u0026amp; Guides\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/ad56550c.delivery.rocketcdn.me\/wp-content\/uploads\/products\/RB-MM1\/redbox-06_hb.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eRB-MM1 Handbook\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eBrochures\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/sonifex.co.uk\/brochures-guides\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eClick to visit the brochures page.\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eDeclarations\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/sonifex.co.uk\/support\/ce-ukca-declarations\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eClick to visit the declarations page.\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eOfficial Links\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/sonifex.co.uk\/product\/rb-mm1\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOfficial Product Page\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"Sonifex","offers":[{"title":"Default Title","offer_id":53670184780117,"sku":"RB-MM1","price":485.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/6993\/3141\/files\/Sonifex_Sonifex_RB_MM1_Mix_Minus_Generator_01.jpg?v=1776014899","url":"https:\/\/tvpro.lt\/products\/sonifex-rb-mm1-mix-minus-generator","provider":"tvpro.lt – Broadcast \u0026 Pro Video Equipment Online Store","version":"1.0","type":"link"}