{"product_id":"jbl-stage-gt-50011-amplifier","title":"JBL Stage GT 50011 500W Mono Class-D Subwoofer Amplifier","description":"\u003cp\u003eThe \u003cstrong\u003eJBL Stage GT 50011 500W Mono Class-D Subwoofer Amplifier\u003c\/strong\u003e delivers 300W RMS at 4 ohms and \u003cstrong\u003e500W RMS at 2 ohms\u003c\/strong\u003e — 1,220W peak — in a compact chassis built for tight installs. Class-D efficiency, a parametric bass EQ with adjustable frequency and Q-factor, variable low-pass crossover, variable phase control, speaker-level inputs, start-stop compatibility, and a remote bass control module — this is a feature-rich mono amp at an accessible price point.\u003c\/p\u003e\n\n\u003cp\u003eThe Stage GT 50011 runs in \u003cstrong\u003eClass-D\u003c\/strong\u003e for maximum thermal efficiency — less heat, smaller chassis, lower current draw, and reliable long-term operation in under-seat or behind-panel installs. Power output is \u003cstrong\u003e300W RMS at 4 ohms\u003c\/strong\u003e and \u003cstrong\u003e500W RMS at 2 ohms\u003c\/strong\u003e, covering most 10\"–12\" subwoofers rated in that range. Frequency response spans 10Hz to 320Hz (±1dB) with THD+N at 1% at rated output. The onboard \u003cstrong\u003eparametric bass EQ\u003c\/strong\u003e is a standout feature at this price — adjustable level (0–12dB), adjustable frequency (30–100Hz), and adjustable Q-factor (Narrow to Wide) let you sculpt your sub's bass character precisely without a separate processor. The \u003cstrong\u003evariable low-pass filter (32–320Hz)\u003c\/strong\u003e handles subwoofer integration and speaker protection. The \u003cstrong\u003evariable phase control (0°–180°)\u003c\/strong\u003e — not just a 2-position switch — lets you fine-tune phase alignment between your subwoofer and main speakers for maximum bass output. Both \u003cstrong\u003ehigh-level (0.2V–5V) and low-level (1V–25V) inputs\u003c\/strong\u003e are supported for factory or aftermarket integration. Full protection suite covers DCP, OVP, UVP, OCP, and OTP. Operating voltage of 9V–16V ensures start-stop vehicle compatibility. Fuse rating is 30A x2 (60A total).\u003c\/p\u003e\n\n\u003cp\u003ePair the Stage GT 50011 with a subwoofer rated 300–500W RMS. Wire a DVC sub to 2 ohms to take full advantage of the 500W RMS output. Use a ported enclosure tuned to 30–35Hz for maximum low-frequency extension, or a sealed enclosure for tighter, more accurate bass. Pairs naturally with JBL Stage3 Series speakers for a matched JBL system.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the JBL Stage GT 50011?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e500W RMS at 2 Ohms:\u003c\/strong\u003e Serious subwoofer power in a compact chassis — enough to drive most 10\"–12\" subwoofers to their rated RMS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParametric Bass EQ (Level + Frequency + Q-Factor):\u003c\/strong\u003e Adjustable level, frequency, and bandwidth — sculpt your sub's bass character precisely without a separate processor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Phase Control (0°–180°):\u003c\/strong\u003e Continuously variable phase — not just a 2-position switch — for precise phase alignment between sub and main speakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass-D Efficiency:\u003c\/strong\u003e Maximum power output with minimum heat generation — compact chassis, lower current draw, reliable long-term operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Low-Pass Filter (32–320Hz):\u003c\/strong\u003e Full subwoofer integration control — set your crossover point precisely without a separate processor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker-Level Inputs:\u003c\/strong\u003e Connects directly to factory head unit speaker outputs — no line output converter required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart-Stop Vehicle Compatible:\u003c\/strong\u003e 9V–16V operating range handles the voltage fluctuations of modern start-stop electrical systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Bass Control Included:\u003c\/strong\u003e Keep subwoofer level control at your fingertips from the driver's seat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWiring \u0026amp; System Recommendations\u003c\/h2\u003e\n\u003cp\u003eUse 4-gauge power and ground wire — fuse within 18 inches of the battery at 60A total (30A x2). For maximum output, wire a DVC subwoofer to 2 ohms and run the amp at 500W RMS. Set the low-pass crossover at 80Hz and use the parametric bass EQ to add 3–6dB of boost at 40–50Hz for ported enclosures — start conservative and increase to taste. Set the subsonic filter (if available on your head unit or DSP) at 25Hz for ported enclosures to protect the subwoofer from infrasonic content. Use 8 AWG or heavier speaker wire from amp to subwoofer. Pairs naturally with JBL Stage3 Series speakers for a fully matched JBL system.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eJBL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSTAGE GT 50011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd\u003eClass-D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003eMono (1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output (4Ω)\u003c\/td\u003e\n\u003ctd\u003e300W RMS x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output (2Ω)\u003c\/td\u003e\n\u003ctd\u003e500W RMS x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Power\u003c\/td\u003e\n\u003ctd\u003e1,220W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e10Hz – 320Hz (±1dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N @ ROP\u003c\/td\u003e\n\u003ctd\u003e1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sensitivity (Low)\u003c\/td\u003e\n\u003ctd\u003e1V – 25V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sensitivity (High)\u003c\/td\u003e\n\u003ctd\u003e0.2V – 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass EQ Level\u003c\/td\u003e\n\u003ctd\u003e0 – 12dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass EQ Frequency\u003c\/td\u003e\n\u003ctd\u003e30Hz – 100Hz (Variable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass EQ Width\u003c\/td\u003e\n\u003ctd\u003eNarrow – Wide (Variable Q)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase Control\u003c\/td\u003e\n\u003ctd\u003e0° – 180° (Variable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-Pass Filter\u003c\/td\u003e\n\u003ctd\u003e32Hz – 320Hz (Variable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eDCP, OVP, UVP, OCP, OTP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e9V – 16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Rating\u003c\/td\u003e\n\u003ctd\u003e30A x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e2.5 kg\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 subwoofer pairs best with the Stage GT 50011?\u003c\/strong\u003e\u003cbr\u003eA: Any subwoofer rated 300–500W RMS is a strong match. Wire a DVC sub to 2 ohms to take full advantage of the 500W RMS output. Contact us at Trinity Car Audio for a specific subwoofer recommendation based on your enclosure and goals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the Stage GT 50011 with my factory head unit?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the high-level inputs (0.2V–5V) connect directly to your factory head unit's speaker outputs without a line output converter. This makes it one of the easiest mono amplifiers to integrate into an OEM system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What makes the parametric bass EQ better than a standard bass boost?\u003c\/strong\u003e\u003cbr\u003eA: A standard bass boost adds a fixed amount of gain at a fixed frequency. The Stage GT 50011's parametric EQ lets you choose the boost frequency (30–100Hz), the boost level (0–12dB), and the bandwidth (Narrow to Wide Q). This means you can target exactly the frequency your subwoofer and enclosure need a boost at, rather than applying a generic boost that may cause unwanted coloration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the Stage GT 50011 compatible with start-stop vehicles?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the 9V–16V operating voltage range is specifically designed to handle the voltage fluctuations of modern start-stop electrical systems without shutting down or causing noise.\u003c\/p\u003e","brand":"JBL","offers":[{"title":"Default Title","offer_id":43698237505603,"sku":"JBLSTAGEGT50011AM","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/9575\/7123\/files\/LS_JBL_STAGE_GT_50011_HERO_0020_x1_ecdc8e49-8545-418c-8f4c-659a7feb942b.png?v=1787255868","url":"https:\/\/www.trinitycaraudio.com\/products\/jbl-stage-gt-50011-amplifier","provider":"Trinity Car Audio","version":"1.0","type":"link"}