{"product_id":"signetamt-amt-tie-desk-mic","title":"AMT TIE\/DESK MIC","description":"\u003cp\u003eThe most common microphones used in induction loop systems are 'electret' lecturn handheld boundary and lavalier microphones as they have the highest tolerance of magnetic feedback. Best practice (though not always possible) is to place the microphone(s) as close as possible to the speaker. \u003cbr\u003e\u003cbr\u003eDynamic microphones should not be used as they contain moving coil magnets which can be affected by the magnetic field generated by the loop. \u003cbr\u003e\u003cbr\u003eA method that is sometimes suggested for overhead placement is a ceiling-mounted boundary microphone. This should be used with caution as (a) microphone too far from the desired sound source especially in the case of a high ceiling and (b) the ceiling in buildings of modern construction is often an extremely noisy location due to air handling noise lighting fixtures and building vibration. \u003cbr\u003e\u003cbr\u003ePhantom power is provided on all PDA amplifiers so electret microphones with batteries are not necessary.\u003c\/p\u003e\u003ctable class=\"features\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"feature\"\u003eType\u003c\/td\u003e\n\u003ctd\u003eSystem  \u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"SIGNET","offers":[{"title":"Default Title","offer_id":63661099417930,"sku":"SIGNETAMT","price":6.37,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/6896\/1354\/files\/AMTAMTAMTAMTAMTAMTAMT.jpg?v=1791028120","url":"https:\/\/crystaltechgroup.myshopify.com\/products\/signetamt-amt-tie-desk-mic","provider":"Crystal Tech","version":"1.0","type":"link"}