{"product_id":"williams-av-ima-540-maxim-receiver-amplifier-amp-only","title":"Williams AV IMA-540 Maxim Receiver Amplifier, Amp Only","description":"\u003cdiv class=\"product-description\"\u003e   \u003ch2\u003eWilliams AV Maxim Receiver Amplifier, Amp Only\u003c\/h2\u003e      \u003cp\u003eThe 4th-generation Maxim™ is Williams AV’s flagship infrared classroom audio system, reimagined for hybrid and in-person learning. Configured in “Amp Only” mode, this unit provides full amplifier\/receiver\/mixer functionality—ready to integrate with your own choice of microphones and speakers to deliver powerful, intelligible sound across your learning environment.\u003c\/p\u003e      \u003cp\u003eUtilizing secure infrared (IR) wireless mic reception and internal digital Class-D amplification, Maxim™ ensures crystal-clear audio, easy conferencing, and reliable installation flexibility, all while supporting essential school integrations like paging, security alerts, and fire alarm muting.\u003c\/p\u003e      \u003ch3\u003eKey Features\u003c\/h3\u003e   \u003cul\u003e     \u003cli\u003e \u003cstrong\u003eAudio Output:\u003c\/strong\u003e 50 W RMS total (2 × 25 W Class-D amplification) powering up to four 8 Ω speakers.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eIR Mic Reception:\u003c\/strong\u003e Dual-channel infrared FM receiver for teacher\/student microphones (e.g., Sapphire pendant or IRH handheld).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eLine Inputs:\u003c\/strong\u003e Four auxiliary inputs—including 3.5 mm (mic\/line, computer with anti-hum) and dual RCA (DVD)—for flexible media connections.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eConference Integration:\u003c\/strong\u003e EchoGuard™ for video conferencing, with dedicated front-panel “Conference” in\/out for seamless audio-syncing and feedback reduction.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eAssistive Listening Output (ALS):\u003c\/strong\u003e Rear-panel 3.5 mm with level control for classroom AL systems.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003ePaging \u0026amp; Security Compatibility:\u003c\/strong\u003e Page muting\/pass-through, security alert, and fire alarm muting via contact closure interfaces.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eRemote Control \u0026amp; Automation:\u003c\/strong\u003e RS-232 access for volume and mute control; low-power standby mode for energy savings.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eAudio Safeguards:\u003c\/strong\u003e 5-band equalizer, Digital Feedback Guard (DFG), and anti-hum balancing on computer input.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eCharger Output:\u003c\/strong\u003e USB 5 VDC for compatible microphone charging docks.\u003c\/li\u003e   \u003c\/ul\u003e      \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e   \u003cul\u003e     \u003cli\u003e \u003cstrong\u003eAmplifier Power:\u003c\/strong\u003e 2 × 25 W RMS Class-D (50 W total) into 4 Ω.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eReceiver Input:\u003c\/strong\u003e Infrared FM, 2 mic channels (850 nm, wide-band FM, Ch A: 2.08 MHz \/ Ch B: 2.54 MHz).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20 Hz–20 kHz, ±3 dB; THD \u0026lt; 1% @ 1 kHz; S\/N ratio ~65 dB.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eLine Inputs:\u003c\/strong\u003e 1 × dual RCA + 3 × 3.5 mm (mic\/line switch + anti-hum computer input).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eOutputs:\u003c\/strong\u003e Front Conference out (3.5 mm); rear ALS out (3.5 mm) with gain control.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003ePaging Input:\u003c\/strong\u003e 2-pin Phoenix; 4 V, 25 V, or 70 V; 51 mV sensitivity minimal.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eSecurity \u0026amp; Fire Inputs:\u003c\/strong\u003e Contact closure (COM\/N.O.\/N.C.).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eEqualizer:\u003c\/strong\u003e 5-band, ±10 dB.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eSpeaker Connector:\u003c\/strong\u003e 4-pin Phoenix, 4 Ω minimum load required.\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eCharger Port:\u003c\/strong\u003e USB 5 V DC for docking (e.g. BRC-60\/BRC-15 microphones).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003ePower Supply:\u003c\/strong\u003e 19 VDC \/ 3.5 A (CE, CSA, UL listed).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eDimensions:\u003c\/strong\u003e 7.5″ × 8.5″ × 1.75″ (19.05 × 21.59 × 4.45 cm).\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eWeight:\u003c\/strong\u003e 1 lb 12 oz (0.794 kg).\u003c\/li\u003e   \u003c\/ul\u003e      \u003ch3\u003eWhat's Included\u003c\/h3\u003e   \u003cul\u003e     \u003cli\u003eMaxim™ Receiver Amplifier unit (Amp Only—no microphones, speakers, or mounting accessories included)\u003c\/li\u003e   \u003c\/ul\u003e \u003c\/div\u003e","brand":"ToneCraft Gear","offers":[{"title":"Default Title","offer_id":68181613805872,"sku":"WS-IMA540","price":561.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/3067\/6272\/files\/1-williams-av-ima-540_a23f3e40-92b9-4d54-b18b-5b24dad91c65.jpg?v=1793016393","url":"https:\/\/tonecraftgear.shop\/products\/williams-av-ima-540-maxim-receiver-amplifier-amp-only","provider":"ToneCraft Gear","version":"1.0","type":"link"}