{"id":21849,"date":"2026-01-29T00:36:43","date_gmt":"2026-01-29T00:36:43","guid":{"rendered":"https:\/\/audiocentras.lt\/produktas\/alpine-kta-450-car-amplifier\/"},"modified":"2026-09-29T18:34:54","modified_gmt":"2026-09-29T18:34:54","slug":"alpine-kta-450-car-amplifier","status":"publish","type":"product","link":"https:\/\/audiocentras.lt\/en\/produktas\/alpine-kta-450-car-amplifier\/","title":{"rendered":"Alpine KTA-450 Car Amplifier"},"content":{"rendered":"<p><strong>The Alpine KTA-450 car amplifier<\/strong> is a compact four-channel power amplifier designed for in-car audio systems. It is particularly useful when there is not enough room for a conventional full-size amplifier. The enclosure can be concealed behind the radio or inside the glove compartment, provided the chosen location has sufficient space.<\/p>\n<h2>PowerStack installation with a 2-DIN receiver<\/h2>\n<p>The <strong>PowerStack<\/strong> design allows the amplifier to be mounted behind certain compatible Alpine mech-less 2-DIN receivers. One specifically listed compatible model is the <strong>Alpine iLX-W650<\/strong>. Installation uses the mounting bracket included with the amplifier.<\/p>\n<p>Together, a compatible amplifier and receiver fit within a standard <strong>2-DIN<\/strong> space. This arrangement provides more installation options in vehicles that do not have a separate location for a power amplifier.<\/p>\n<h2>Short-term power for musical peaks<\/h2>\n<p><strong>Dynamic Peak Power (DPP)<\/strong> technology adjusts amplification during brief peaks in musical dynamics. At these moments, each channel can temporarily deliver up to <strong>100 W DPP<\/strong>. The combined DPP output across all four channels is 400 W.<\/p>\n<p>The DPP figure should not be confused with continuous output power. Under <strong>CTA-2006<\/strong> measurement conditions, the amplifier delivers 45 W RMS per channel. DPP is intended to reduce clipping during sudden peaks, but it does not replace correct system setup and level adjustment.<\/p>\n<h2>Connector and cable routing<\/h2>\n<p>The amplifier uses a <strong>22-pin power wiring-harness connector<\/strong>. Its socket is recessed into the enclosure, allowing the wiring to bend closer to the amplifier. In a PowerStack installation, the harness fits between the amplifier and the compatible receiver.<\/p>\n<p>This connector arrangement reduces how far the complete installation projects outward. That matters behind a radio, where available depth for the enclosure and cables may be limited. Before installation, enough room must be left for the wiring harness to bend naturally without being compressed.<\/p>\n<h2>Choosing power and speaker load<\/h2>\n<p>When comparing this model with other amplifiers, use the <strong>45 W RMS per channel<\/strong> rating. It is specified at 14.4 V with no more than 1% THD+N. The same rating applies with either a 2-ohm or 4-ohm load.<\/p>\n<p>Speaker load must be considered separately for each channel. After installation, raise the volume gradually. If distortion becomes audible, reduce the level even though DPP technology is available for brief musical peaks.<\/p>\n<h2>Selecting an installation location<\/h2>\n<p>The enclosure measures <strong>7 \u00d7 3.5 \u00d7 1.25 inches<\/strong>, making concealed installation possible. Potential locations include the glove compartment or the space behind the vehicle\u2019s radio. The chosen position must accommodate the enclosure, connector, and bent wiring harness.<\/p>\n<p>The PowerStack solution is best suited to a compatible Alpine receiver and a restricted 2-DIN installation space. When using another receiver, the connection method must be selected according to that receiver\u2019s connections and the vehicle wiring. This model should not be treated as a universal accessory for every car radio.<\/p>\n<h2>Technical specifications<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Model<\/th>\n<td>Alpine KTA-450<\/td>\n<\/tr>\n<tr>\n<th>Type<\/th>\n<td>Compact four-channel car power amplifier<\/td>\n<\/tr>\n<tr>\n<th>Continuous output power<\/th>\n<td>4 \u00d7 45 W RMS, 2 or 4 ohms, 14.4 V, \u22641% THD+N, CTA-2006<\/td>\n<\/tr>\n<tr>\n<th>DPP output<\/th>\n<td>4 \u00d7 100 W DPP, 2 or 4 ohms, 14.4 V, \u22641% THD+N<\/td>\n<\/tr>\n<tr>\n<th>Total DPP output<\/th>\n<td>400 W<\/td>\n<\/tr>\n<tr>\n<th>Signal-to-noise ratio<\/th>\n<td>&gt;82 dB, measured at 1 W into a 4-ohm load<\/td>\n<\/tr>\n<tr>\n<th>Technologies<\/th>\n<td>PowerStack, Dynamic Peak Power<\/td>\n<\/tr>\n<tr>\n<th>PowerStack compatibility<\/th>\n<td>Certain compatible Alpine mech-less 2-DIN receivers; the iLX-W650 is a specified example<\/td>\n<\/tr>\n<tr>\n<th>Connector<\/th>\n<td>Recessed 22-pin power wiring-harness connector<\/td>\n<\/tr>\n<tr>\n<th>Dimensions<\/th>\n<td>7 inches wide \u00d7 3.5 inches high \u00d7 1.25 inches deep<\/td>\n<\/tr>\n<tr>\n<th>Possible installation locations<\/th>\n<td>Behind the radio or in the glove compartment, where sufficient room is available for the enclosure and wiring<\/td>\n<\/tr>\n<tr>\n<th>Included accessory<\/th>\n<td>PowerStack mounting bracket<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>FAQ<\/h2>\n<h3>Does this amplifier replace the vehicle\u2019s multimedia receiver?<\/h3>\n<p>No. It amplifies four audio channels, but the music signal must be supplied by a separate in-car receiver.<\/p>\n<h3>Can PowerStack installation be used with any 2-DIN receiver?<\/h3>\n<p>No. This installation method is intended for certain compatible Alpine 2-DIN receivers. The iLX-W650 is specifically identified as an example of a compatible model.<\/p>\n<h3>Which power figure should I use when comparing amplifiers?<\/h3>\n<p>Use the CTA-2006 RMS rating when comparing continuous power. The DPP figure describes a brief increase in available power during sudden musical peaks.<\/p>\n<h3>Can I use 2-ohm and 4-ohm speakers?<\/h3>\n<p>Power ratings are provided for both loads. When planning the system, the load connected to each channel must match the selected 2-ohm or 4-ohm configuration.<\/p>\n<h3>How much room should be left for the wiring?<\/h3>\n<p>In addition to the enclosure dimensions, allow space for the 22-pin wiring harness. It must bend naturally beside the recessed connector without being compressed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>The Alpine KTA-450 car amplifier<\/strong> is designed for four-channel in-car audio systems where installation space is limited. Its compact enclosure and recessed 22-pin connector help keep the wiring harness neatly routed. With certain compatible Alpine 2-DIN receivers, such as the iLX-W650, the included bracket allows the amplifier to be mounted behind the receiver. Continuous output is 45 W RMS per channel.<\/p>\n","protected":false},"featured_media":21817,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_members_access_role":[],"_members_access_error":""},"product_brand":[],"product_cat":[439,86],"product_tag":[265,897,2657,2659,2311,2655,2658],"class_list":["post-21849","product","type-product","status-publish","has-post-thumbnail","product_cat-car-audio","product_cat-stiprintuvai","product_tag-alpine","product_tag-car-audio","product_tag-compact-amplifier","product_tag-dynamic-peak-power","product_tag-four-channel-amplifier","product_tag-kta-450","product_tag-powerstack","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Alpine KTA-450 Car Amplifier - 4-Channel<\/title>\n<meta name=\"description\" content=\"Alpine KTA-450 four-channel car amplifier with 45 W RMS per channel and PowerStack mounting for a compatible 2-DIN receiver.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/audiocentras.lt\/en\/produktas\/alpine-kta-450-car-amplifier\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alpine KTA-450 Car Amplifier\" \/>\n<meta property=\"og:description\" content=\"Alpine KTA-450 four-channel car amplifier with 45 W RMS per channel and PowerStack mounting for a compatible 2-DIN receiver.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/audiocentras.lt\/en\/produktas\/alpine-kta-450-car-amplifier\/\" \/>\n<meta property=\"og:site_name\" content=\"audio centras\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Audiocentras\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-29T18:34:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/audiocentras.lt\/wp-content\/uploads\/2026\/09\/alpine-kta-450-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"487\" \/>\n\t<meta property=\"og:image:height\" content=\"375\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/audiocentras.lt\\\/en\\\/produktas\\\/alpine-kta-450-car-amplifier\\\/\",\"url\":\"https:\\\/\\\/audiocentras.lt\\\/en\\\/produktas\\\/alpine-kta-450-car-amplifier\\\/\",\"name\":\"Alpine KTA-450 Car Amplifier - 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