{"id":1437,"date":"2020-01-16T09:14:52","date_gmt":"2020-01-16T15:14:52","guid":{"rendered":"https:\/\/adcaraudio.com\/store\/?post_type=product&#038;p=1437"},"modified":"2025-05-01T11:29:47","modified_gmt":"2025-05-01T17:29:47","slug":"adcs643a-4000-series","status":"publish","type":"product","link":"https:\/\/adcaraudio.com\/store\/product\/adcs643a-4000-series\/","title":{"rendered":"4000 Series 6.5&#8243; Set &#8211; CS643A"},"content":{"rendered":"<div class=\"epyt-video-wrapper\"><iframe  id=\"_ytid_76169\"  width=\"900\" height=\"506\"  data-origwidth=\"900\" data-origheight=\"506\"  data-relstop=\"1\" src=\"https:\/\/www.youtube.com\/embed\/DkJgwl-VbaI?enablejsapi=1&autoplay=0&cc_load_policy=0&cc_lang_pref=&iv_load_policy=1&loop=0&rel=0&fs=1&playsinline=0&autohide=2&theme=dark&color=red&controls=1&disablekb=0&\" class=\"__youtube_prefs__  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/div>\n<p>Audio Dynamics speakers were designed to reproduce music with ultimate accuracy.<\/p>\n<p>We\u2019ve spent countless listening hours examining the tonal qualities of many different cone materials; from glass fiber, to Kevlar, to carbon fiber and more. Ultimately, we chose wool pulp for its ability to deliver astonishing realism and detailed timbre across the harmonics. We then added an acoustically-transparent chemical to help the soft parts resist moisture. We\u2019ve gone to similar lengths in developing our tweeter components which use the highest grade transparent silk domes and powerful Neodymium motors to produce clear and effortless highs.<\/p>\n<p>Our speakers will pull you into the musical performance and breath new life into your music collection.<\/p>\n<p>&nbsp;<\/p>\n<pre><strong>Mid Woofer:\r\nFs<\/strong>\t55.450 Hz\r\n<strong>Qms<\/strong>\t2.579\r\n<strong>Vas<\/strong>\t12.880 l\r\n<strong>Cms<\/strong>\t0.506 mm\/N\r\n<strong>Mms<\/strong>\t16.080 g\r\n<strong>Rms<\/strong>\t2.195 kg\/s\r\n<strong>Dia<\/strong>\t130.500 mm\r\n<strong>Sd<\/strong>\t133.755 cm\u00b2\r\n\t\r\n<strong>Qes<\/strong>\t0.480\r\n<strong>Re<\/strong>\t3.836 \u03a9\r\n<strong>Le<\/strong>\t0.165 mH\r\n<strong>Z<\/strong>\t4.603 \u03a9\r\n<strong>Bl<\/strong>\t6.687 Tm\r\n<strong>Bl\u00b2\/Re<\/strong>\t11.659 N\u00b2\/W\r\n\r\n<strong>Qts<\/strong>\t0.405\r\n<strong>no<\/strong>\t0.440 %\r\n<strong>SPL<\/strong>\t88.587 dB\r\n\r\n<strong>Frame Outer Diameter<\/strong>\t6 9\/16\"  (166mm)\r\n<strong>Grille Outer Diameter<\/strong>\t7 3\/16\"  (182mm)\r\n<strong>Motor Outer Diameter<\/strong>\t3 15\/16\" (100mm)\r\n<strong>Grille Protrusion<\/strong>\t  15\/16\" (23mm)\r\n<strong>Mounting Hole Diameter<\/strong>\t5 5\/8\"   (142mm)\r\n<strong>Mounting Depth<\/strong>\t\t2 11\/16\" (68mm)\r\n\r\n<\/pre>\n<pre><strong>Tweeter:\r\nFs<\/strong>\t1742.000 Hz\r\n<strong>Qms<\/strong>\t1.672\r\n<strong>Qes<\/strong>\t3.498\r\n<strong>Re<\/strong>\t3.177 \u03a9\r\n<strong>Le<\/strong>\t0.050 mH\r\n<strong>Z<\/strong>\t3.8124 \u03a9\r\n<strong>Qts<\/strong>\t1.131\r\n<\/pre>\n<pre><strong>Flush Mount Hole Diameter       <\/strong>1 7\/8\"   (47mm)\r\n<strong>Flush Mount Depth<\/strong>\t\t  13\/16\" (21mm)\r\n<strong>Flush Mount Diameter<\/strong>\t\t2 1\/8\"   (53mm)\r\n<strong>Flush Mount Protrusion<\/strong>\t\t  3\/8\"   (10mm)<\/pre>\n","protected":false},"excerpt":{"rendered":"<h3><\/h3>\n<ul>\n<li>Perfectly blended wool pulp cone mid\/woofer for realistic tonal accuracy<\/li>\n<li>6 \u00bd&#8221; (166 mm) Cast frame mid\/woofer<\/li>\n<li>60 count yarn cloth surround<\/li>\n<li>1 3\/16&#8243; (30 mm) voice coil mid\/woofer<\/li>\n<li>Push pin terminals on mid\/woofer<\/li>\n<li>Shorting ring for extended response<\/li>\n<li>Gold plated terminals<\/li>\n<li>1&#8243; (25 mm) High-end transparent silk dome tweeter<\/li>\n<li>Aluminum tweeter housing with thread lock flush mounting<\/li>\n<li>Polypropylene capacitor and air core inductor in tweeter crossover circuit<\/li>\n<li>-4, -2, 0 dB direct wire tweeter attenuation<\/li>\n<li>150 Watts RMS power handling*<\/li>\n<\/ul>\n<p style=\"background-color: rgba(0, 0, 0, 0) !important;\">* All power ratings are figured using an electronic high pass crossover with a minimum crossover point of 60Hz at 24dB\/Octave, 80Hz at 18dB\/Octave, or 100Hz at 12dB\/Octave.<\/p>\n","protected":false},"featured_media":1445,"template":"","meta":{"jetpack_post_was_ever_published":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"product_brand":[],"product_cat":[61],"product_tag":[],"class_list":{"0":"post-1437","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-speaker-archives","8":"first","9":"outofstock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product\/1437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/media\/1445"}],"wp:attachment":[{"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/media?parent=1437"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product_brand?post=1437"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product_cat?post=1437"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product_tag?post=1437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}