{"id":22643,"date":"2019-07-28T10:22:44","date_gmt":"2019-07-28T10:22:44","guid":{"rendered":"https:\/\/audiocentras.lt\/produktas\/audio-system-au-500-1-car-amplifier\/"},"modified":"2026-09-29T18:54:07","modified_gmt":"2026-09-29T18:54:07","slug":"audio-system-au-500-1-car-amplifier","status":"publish","type":"product","link":"https:\/\/audiocentras.lt\/en\/produktas\/audio-system-au-500-1-car-amplifier\/","title":{"rendered":"Audio System AU 500.1 Car Amplifier"},"content":{"rendered":"

Audio System AU 500.1<\/strong> is a single-channel car audio amplifier designed for a vehicle subwoofer system. It can operate with loads of no less than 1 ohm<\/strong> and features adjustable frequency filters. The high-level input helps integrate it with the vehicle\u2019s factory head unit.<\/p>\n

Power and Load Selection<\/h2>\n

The power ratings are stated as RMS values<\/strong> at a 14.4 V supply voltage. Amplifiers should therefore be compared only using figures measured under the same conditions.<\/p>\n

As load impedance decreases, the amplifier can deliver more power. Before connecting multiple voice coils or speakers, calculate their total impedance. It must not fall below the amplifier\u2019s permitted minimum load.<\/p>\n

Signal Connection<\/h2>\n

The amplifier has a high-level input<\/strong>. Use it when the vehicle\u2019s factory head unit does not provide a separate low-level signal output. The amplifier can switch on automatically when it detects an audio signal at the input.<\/p>\n

The signal is received through a dual differential input<\/strong> with the G.R.I.P.S. system. Input sensitivity can be adjusted from 0.2 to 5 V RMS, allowing the amplifier to work with different source signal levels.<\/p>\n

The sensitivity control is not a volume control. Begin with lower sensitivity and increase it gradually. Stop when you achieve sufficient output without audible distortion.<\/p>\n

Adjusting the Frequency Filters<\/h2>\n

The low-pass filter<\/strong> is adjustable from 45 to 255 Hz. Choose an initial setting according to the frequency range reproduced by the connected speaker, then assess the result from the driver\u2019s seat.<\/p>\n

If the bass overlaps too much with the vehicle\u2019s other speakers, lower the filter frequency. If you hear a gap between frequency bands, increase it carefully.<\/p>\n

The subsonic filter<\/strong> is adjustable from 15 to 55 Hz. It limits the lowest frequencies. Raise the setting only as much as necessary to reduce unwanted ultra-low-frequency reproduction.<\/p>\n

Bass boost<\/strong> is adjustable from 0 to +12 dB at 45 Hz. Begin adjustment at 0 dB. Increasing the boost places greater demands on both the amplifier and the connected speaker.<\/p>\n

Both filters have a 12 dB-per-octave<\/strong> slope. Protection operation is managed by an independent circuit.<\/p>\n

Choosing an Installation Location<\/h2>\n

Allow additional room around the 195 \u00d7 59 \u00d7 232 mm housing for connectors, cable bends, and airflow. Do not cover the amplifier with carpet trim. Secure the 2.85 kg unit firmly to a stable surface.<\/p>\n

The amplifier is made in Italy. Choose an installation position that keeps the filter and sensitivity controls accessible during the system\u2019s initial setup.<\/p>\n

Technical Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Type<\/th>\nSingle-channel car audio amplifier<\/strong><\/td>\n<\/tr>\n
Power at 4 ohms<\/th>\n1 \u00d7 200 W RMS, 14.4 V<\/td>\n<\/tr>\n
Power at 2 ohms<\/th>\n1 \u00d7 350 W RMS, 14.4 V<\/td>\n<\/tr>\n
Power at 1 ohm<\/th>\n1 \u00d7 500 W RMS, 14.4 V<\/td>\n<\/tr>\n
Minimum load impedance<\/th>\n1 ohm<\/td>\n<\/tr>\n
Frequency range<\/th>\n5-300 Hz<\/td>\n<\/tr>\n
Subsonic filter<\/th>\nAdjustable, 15-55 Hz<\/td>\n<\/tr>\n
Low-pass filter<\/th>\nAdjustable, 45-255 Hz<\/td>\n<\/tr>\n
Filter slope<\/th>\n12 dB per octave<\/td>\n<\/tr>\n
Bass boost<\/th>\n0-12 dB at 45 Hz<\/td>\n<\/tr>\n
Input sensitivity<\/th>\n0.2-5 V RMS<\/td>\n<\/tr>\n
Signal inputs<\/th>\nHigh-level and dual differential input with G.R.I.P.S. system<\/td>\n<\/tr>\n
Automatic switch-on<\/th>\nTriggered by detected audio signal<\/td>\n<\/tr>\n
Crossover adjustment<\/th>\nSeparate frequency controls for the subsonic and low-pass filters<\/td>\n<\/tr>\n
Protection<\/th>\nManaged by an independent circuit<\/td>\n<\/tr>\n
Dimensions<\/th>\n195 \u00d7 59 \u00d7 232 mm<\/td>\n<\/tr>\n
Weight<\/th>\n2.85 kg<\/td>\n<\/tr>\n
Country of manufacture<\/th>\nItaly<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

FAQ<\/h2>\n

Can I connect multiple subwoofers?<\/h3>\n

Yes, provided that the final combined load impedance is no lower than 1 ohm. When calculating the load, account for whether the voice coils are connected in series or parallel.<\/p>\n

When should I use the high-level input?<\/h3>\n

Use it with a head unit that sends its signal through speaker outputs. Signal detection can activate the amplifier\u2019s automatic switch-on function.<\/p>\n

How should I begin adjusting the filters?<\/h3>\n

Set the low-pass filter first, then adjust the subsonic filter. Evaluate every change from your normal listening position.<\/p>\n

Does bass boost replace sensitivity adjustment?<\/h3>\n

No. Sensitivity matches the amplifier to the source signal level, while bass boost emphasizes a narrower frequency region at 45 Hz.<\/p>\n

What should I allow for when installing the amplifier?<\/h3>\n

Leave room for connectors, cable bends, and airflow. Fasten the housing securely so that it cannot move while the vehicle is being driven.<\/p>\n","protected":false},"excerpt":{"rendered":"

Audio System AU 500.1<\/strong> is a single-channel car amplifier designed for a subwoofer system. It operates with loads of no less than 1 ohm and delivers 500 W RMS at 14.4 V into 1 ohm. Its high-level input and audio-signal-triggered automatic switch-on simplify integration with a factory head unit. Adjustable filters allow the reproduced frequency range to be matched to the connected subwoofer.<\/p>\n","protected":false},"featured_media":22634,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_members_access_role":[],"_members_access_error":""},"product_brand":[],"product_cat":[439,86],"product_tag":[2944,3031,299,2278,2700,2279,2280],"class_list":["post-22643","product","type-product","status-publish","has-post-thumbnail","product_cat-car-audio","product_cat-stiprintuvai","product_tag-1-ohm-amplifier","product_tag-au-500-1","product_tag-audio-system","product_tag-car-amplifier","product_tag-high-level-input","product_tag-mono-amplifier","product_tag-subwoofer-amplifier","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nAudio System AU 500.1 - Amplifier for 1-Ohm Systems<\/title>\n<meta name=\"description\" content=\"Audio System AU 500.1 mono amplifier: 500 W RMS at 1 ohm and 14.4 V, with a high-level input and adjustable filters.\" \/>\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\/audio-system-au-500-1-car-amplifier\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Audio System AU 500.1 Car Amplifier\" \/>\n<meta property=\"og:description\" content=\"Audio System AU 500.1 mono amplifier: 500 W RMS at 1 ohm and 14.4 V, with a high-level input and adjustable filters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/audiocentras.lt\/en\/produktas\/audio-system-au-500-1-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=\"2026-09-29T18:54:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/audiocentras.lt\/wp-content\/uploads\/2026\/09\/audio-system-au-5001-1-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\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\\\/audio-system-au-500-1-car-amplifier\\\/\",\"url\":\"https:\\\/\\\/audiocentras.lt\\\/en\\\/produktas\\\/audio-system-au-500-1-car-amplifier\\\/\",\"name\":\"Audio System AU 500.1 - 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