{"product_id":"ruthless-audio-4500-1-4-500-watt-monoblock-amplifier","title":"Ruthless Audio 4500.1 4,500 Watt Monoblock Amplifier","description":"\u003cp\u003eBuilding a subwoofer system that needs serious power? The \u003cstrong\u003eRuthless Audio 4500.1 4,500-Watt Monoblock Amplifier\u003c\/strong\u003e is designed for high-output bass builds, with a published rating of \u003cstrong\u003e4,500W RMS at 1 ohm\u003c\/strong\u003e at 14.4V. It is listed as \u003cstrong\u003e0.5-ohm stable\u003c\/strong\u003e and can be strapped with another 4500.1 for a larger system. Plan the subwoofers, wiring, enclosure, and electrical supply as one complete build to get the most from it.\u003c\/p\u003e\n\n\u003cp\u003eAt 14.4V, the listed RMS ratings are \u003cstrong\u003e4,500W @ 1Ω\u003c\/strong\u003e, \u003cstrong\u003e2,350W @ 2Ω\u003c\/strong\u003e, and \u003cstrong\u003e1,200W @ 4Ω\u003c\/strong\u003e. The amplifier has a \u003cstrong\u003e400A fuse rating\u003c\/strong\u003e (200A per positive run) and \u003cstrong\u003e1\/0 AWG power inputs\u003c\/strong\u003e, which make electrical planning especially important. Tiffany-style locking RCA inputs provide a secure signal connection. Its listed frequency response is \u003cstrong\u003e10Hz–250Hz\u003c\/strong\u003e, with 0–180° phase control and THD of less than 0.01% at 4Ω.\u003c\/p\u003e\n\n\u003cp\u003eMake room for a chassis measuring \u003cstrong\u003e25-1\/8\" long × 9-1\/16\" wide × 2.75\" high\u003c\/strong\u003e, including adequate ventilation and access to connections. Input sensitivity spans 0.2V–6V; check your head unit or DSP output and set gains correctly. For 0.5-ohm operation, assess charging capacity, battery reserve, cable sizing, fusing, and voltage under load before installing. Confirm the manufacturer's current requirements and warranty terms for your intended configuration rather than assuming any upgrade guarantees coverage.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Ruthless Audio 4500.1 Monoblock Amplifier?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4,500W RMS @ 1 Ohm\u003c\/strong\u003e — Published power at 14.4V for a high-output subwoofer system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5-Ohm Stable\u003c\/strong\u003e — Offers a low-impedance option when the full electrical system and subwoofer wiring are designed for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrappable Design\u003c\/strong\u003e — Two matching 4500.1 amplifiers can be used in a strapped configuration with a listed 1Ω minimum load for the pair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-Amp Fuse Rating\u003c\/strong\u003e — Listed as 200A per positive run; design protection and wiring for the actual installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/0 AWG Power Inputs\u003c\/strong\u003e — Large power terminals support the cable sizing expected in a high-current setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiffany-Style RCA Inputs\u003c\/strong\u003e — Locking signal connections help keep RCA leads seated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10Hz–250Hz Frequency Response\u003c\/strong\u003e — A published low-frequency range for subwoofer-focused use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD \u0026lt; 0.01% @ 4Ω\u003c\/strong\u003e — A listed distortion figure at the specified load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eElectrical \u0026amp; Installation Recommendations\u003c\/h2\u003e\n\u003cp\u003eThe 4500.1 places substantial demand on a vehicle's electrical system, especially when used at 0.5Ω. Plan a suitable high-output alternator, upgraded Big 3 wiring with appropriately sized cable, and enough AGM or lithium battery reserve for the system and its usage. The original build guidance calls out a 200A+ alternator and 1\/0 AWG cable as planning points, not a universal guarantee of adequate supply. Have a qualified installer size the charging system, batteries, fuses, and cable runs for your vehicle and intended listening or competition use. Monitor voltage under load; low voltage can affect performance and reliability.\u003c\/p\u003e\n\u003cp\u003eChoose subwoofers based on the amplifier's output at your actual final impedance and each driver's RMS handling, voice-coil configuration, and enclosure design. Competition-oriented drivers rated for 2,000W RMS or more may be candidates, but the correct number and wiring depend on the exact models. Calculate the final load rather than assuming two dual-voice-coil subs automatically produce 1Ω or 0.5Ω. A compatible DSP or active crossover can provide the low-pass and subsonic control your subwoofers need. Plan dedicated, appropriately fused power and ground wiring to the amp.\u003c\/p\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 1Ω (14.4V)\u003c\/td\u003e\n\u003ctd\u003e4,500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 2Ω (14.4V)\u003c\/td\u003e\n\u003ctd\u003e2,350W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 4Ω (14.4V)\u003c\/td\u003e\n\u003ctd\u003e1,200W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Impedance\u003c\/td\u003e\n\u003ctd\u003e0.5 Ohm Stable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrappable\u003c\/td\u003e\n\u003ctd\u003eYes (1 Ohm when strapped)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e1 (Monoblock)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e10Hz – 250Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase Control\u003c\/td\u003e\n\u003ctd\u003e0° – 180°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.01% @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd\u003e0.2V – 6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRCA Inputs\u003c\/td\u003e\n\u003ctd\u003eTiffany-Style Locking RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input Gauge\u003c\/td\u003e\n\u003ctd\u003e1\/0 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Rating\u003c\/td\u003e\n\u003ctd\u003e400A (200A per positive run)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e25-1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e9-1\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e2.75\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 Year Standard \/ 2 Year Extended Available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What electrical upgrades do I need to run the 4500.1 at 0.5 ohms?\u003c\/strong\u003e\u003cbr\u003eA: Assess the alternator, Big 3 wiring, cable and fuse sizes, and battery reserve against the expected current draw. A 200A+ alternator and 1\/0 AWG wiring are starting points from the existing guidance, not a substitute for sizing the system to your vehicle. Check the manufacturer's installation and warranty conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I strap two 4500.1 amplifiers together?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the specifications list a strappable configuration with a 1Ω minimum when strapped. Follow the manufacturer's strapping instructions and plan electrical capacity for both amplifiers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What subwoofers pair best with the Ruthless Audio 4500.1?\u003c\/strong\u003e\u003cbr\u003eA: Look at high-power subwoofers whose combined RMS handling and final wired impedance suit your target output. Voice-coil options, enclosure design, and your electrical capacity all affect the right choice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the standard and extended warranty?\u003c\/strong\u003e\u003cbr\u003eA: The specifications list one year standard and two years with an extended option. Check the current warranty terms, eligibility, and any special conditions for low-impedance use before purchasing or installing.\u003c\/p\u003e","brand":"Ruthless Audio","offers":[{"title":"No","offer_id":46315128487980,"sku":null,"price":829.99,"currency_code":"USD","in_stock":true},{"title":"Yes","offer_id":46315128520748,"sku":null,"price":949.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0656\/8964\/9196\/files\/wq5rgqawerfgQAWERFG.png?v=1790793818","url":"https:\/\/www.4staraudio.com\/products\/ruthless-audio-4500-1-4-500-watt-monoblock-amplifier","provider":"4StarAudio","version":"1.0","type":"link"}