{"id":6233,"date":"2025-10-26T10:37:43","date_gmt":"2025-10-26T16:37:43","guid":{"rendered":"https:\/\/adcaraudio.com\/store\/?post_type=product&p=6233"},"modified":"2026-02-21T11:24:56","modified_gmt":"2026-02-21T17:24:56","slug":"sd500-4x","status":"publish","type":"product","link":"https:\/\/adcaraudio.com\/store\/product\/sd500-4x\/","title":{"rendered":"SD500.4x"},"content":{"rendered":"

The SDx amplifiers have double the thermal capacity as the original SD amplifiers.<\/p>\n

\"\"<\/p>\n

The top plate has also been increased from 1.3mm to 5mm thick. An additional top plate can be purchased in RED<\/span><\/strong>.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Continuous Power<\/strong><\/td>\n75W x 4 @ 4 ohms<\/td>\n<\/tr>\n
\u00a014.4V Supply Voltage<\/strong><\/td>\n135W x 4 @ 2 ohms<\/td>\n<\/tr>\n
\u00a0Bridged<\/strong><\/td>\n270W x 2 @ 4 ohms<\/td>\n<\/tr>\n
\u00a0Frequency Response<\/strong><\/td>\n10Hz \u2013 27KHz<\/td>\n<\/tr>\n
\u00a0Input Sensitivity<\/strong><\/td>\n200mV t- 6V (low level)<\/td>\n<\/tr>\n
<\/td>\n500mV – 10V (high level into RCA connectors)<\/td>\n<\/tr>\n
\u00a0Recommended Fuse Ratings<\/strong><\/td>\n30A @ 4 ohms \/ 50A @ 2 ohms<\/td>\n<\/tr>\n
\u00a0Filter Modes<\/strong><\/td>\nHigh Pass \u2013 Low Pass \u2013 Band Pass<\/td>\n<\/tr>\n
\u00a0High Pass Filter<\/strong><\/td>\nCh 1+2: 20Hz \u2013 5KHz<\/td>\n<\/tr>\n
\u00a0At 12dB\/Oct Slope<\/strong><\/td>\nCh 3+4: 20Hz \u2013 5KHz<\/td>\n<\/tr>\n
\u00a0Linkwitz-Riley<\/strong><\/td>\n<\/td>\n<\/tr>\n
\u00a0Low Pass Filter<\/strong><\/td>\nCh 1+2: 50Hz – 5KHz<\/td>\n<\/tr>\n
\u00a0At 12dB\/Oct Slope<\/strong><\/td>\nCh 3+4: 50Hz \u2013 5KHz<\/td>\n<\/tr>\n
\u00a0Linkwitz-Riley<\/strong><\/td>\n<\/td>\n<\/tr>\n
\u00a0Detented Filter Potentiometers<\/strong><\/td>\n41 Click-in-Place Frequencies<\/td>\n<\/tr>\n
\u00a0<\/strong><\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n
\u00a0Height<\/strong><\/td>\n2 in \/ 50.3 mm<\/td>\n<\/tr>\n
\u00a0Width<\/strong><\/td>\n7.0 in \/ 178 mm (includes mounting feet)<\/td>\n<\/tr>\n
\u00a0Depth<\/strong><\/td>\n4.5 in \/ 114.3 mm (includes terminals)<\/td>\n<\/tr>\n
\u00a0Net Weight<\/strong><\/td>\n\u00a0lb \/\u00a0 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

 <\/p>\n

    \n
  • 500W 4-Channel Amplifier<\/li>\n
  • Optional RED<\/span><\/strong> Top Plate<\/li>\n
  • Xtreme Thermal Capacity Heatsink<\/li>\n
  • Full Range Class D<\/li>\n
  • Ultra Small Size for Easy Installation<\/li>\n
  • Infineon Chipset Drive Technology<\/li>\n
  • Controls Under Reversible Top Cover<\/li>\n
  • Click-in-Place Crossover Controls<\/li>\n
  • Clip Indicator by Level Controls<\/li>\n
  • Band Pass Capable<\/li>\n
  • Auto Turn On (DC\/Signal)<\/li>\n
  • 2ch\/4ch Input Selector<\/li>\n
  • High\/Low Level RCA Inputs<\/li>\n
  • Audio Precision Quality Control Verification<\/li>\n
  • 4 AWG Power Terminals<\/li>\n
  • Engineered in U.S.A. and China<\/li>\n<\/ul>\n","protected":false},"featured_media":6692,"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":[57,17],"product_tag":[],"class_list":{"0":"post-6233","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-4-channel","7":"product_cat-amplifiers","9":"first","10":"instock","11":"purchasable","12":"product-type-variable","13":"has-default-attributes"},"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product\/6233","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\/6692"}],"wp:attachment":[{"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/media?parent=6233"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product_brand?post=6233"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product_cat?post=6233"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/adcaraudio.com\/store\/wp-json\/wp\/v2\/product_tag?post=6233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}