{"version":"1.0","provider_name":"Proel Commercial Audio","provider_url":"https:\/\/commercialaudio.proel.com\/en\/","author_name":"Proel Commercial Audio","author_url":"https:\/\/commercialaudio.proel.com\/en\/","title":"Antilarsen \/ Frequency Shifter - Proel Commercial Audio","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"rfH0T1mV9N\"><a href=\"https:\/\/commercialaudio.proel.com\/en\/prodotto\/pa-fshifter-antilarsen-frequency-shifter\/\">Antilarsen \/ Frequency Shifter<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/commercialaudio.proel.com\/en\/prodotto\/pa-fshifter-antilarsen-frequency-shifter\/embed\/#?secret=rfH0T1mV9N\" width=\"600\" height=\"338\" title=\"&#8220;Antilarsen \/ Frequency Shifter&#8221; &#8212; Proel Commercial Audio\" data-secret=\"rfH0T1mV9N\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/commercialaudio.proel.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/commercialaudio.proel.com\/wp-content\/uploads\/2026\/02\/tmp_safe_d8ec5e6ce895f16176759f7e0869b4f6.jpg","thumbnail_width":1200,"thumbnail_height":1200,"description":"This equipment has been specifically designed for the elimination of possible audio feedback that can be generated in an audio system in environments such as churches and conference rooms. Feedback can occurs when a signal comes back to the microphone, after being picked up by a microphone and then played amplified (through the speakers). The signal, due the loop that has been generated, is continually amplified causing a very annoying hiss. The FSHIFTER thanks to the internal DSP shifts in frequency the output signal from the input so that the loop noise does not close ever, going to greatly reduce the possibility of having the annoying hissing.Main features: Balanced line input on XLR connector Unbalanced line input on RCA connector Balanced line output on XLR connector Unbalanced line Output RCA connector LED indication of operating mode Switch power supply 230\/117V~ 50\/60Hz"}