{"product_id":"jbl-stadium-122ssi-car-audio-subwoofer","title":"JBL Stadium 122SSI 12\" Component Subwoofer","description":"\u003cp\u003eThe \u003cstrong\u003eJBL Stadium 122SSI 12\" Component Subwoofer\u003c\/strong\u003e delivers 500W RMS \/ 1,500W peak power with a frequency response reaching down to 25Hz — and its exclusive \u003cstrong\u003eSelectable Smart Impedance (SSI™) technology\u003c\/strong\u003e lets you switch between 2 ohms and 4 ohms to match your amplifier's optimal output impedance. One subwoofer, two impedance options, maximum amplifier compatibility. This is Stadium Series engineering applied to the low end.\u003c\/p\u003e\n\n\u003cp\u003eThe SSI™ system is the headline feature: a built-in impedance selector lets you configure the sub at \u003cstrong\u003e2 ohms\u003c\/strong\u003e for maximum power output from a high-current amplifier, or \u003cstrong\u003e4 ohms\u003c\/strong\u003e for cleaner, more efficient operation with amplifiers that perform best at higher impedance loads. No rewiring, no separate DVC configurations to manage — just flip and go. The \u003cstrong\u003e2\" (50mm) aero-cooled voice coil\u003c\/strong\u003e uses moving air to dissipate heat during high-output operation, keeping thermals low and performance consistent even during extended high-volume listening. Sensitivity reaches 92dB at 2.83V for strong output efficiency. Frequency response spans 25Hz to 175Hz, covering everything from infrasonic sub-bass rumble to upper bass punch. The \u003cstrong\u003eintegrated push terminals accept up to 8 AWG speaker wire\u003c\/strong\u003e for low-resistance current delivery at high power levels. Cutout diameter is 28.5cm with an 18.0cm mounting depth — fits most standard 12\" enclosures.\u003c\/p\u003e\n\n\u003cp\u003ePair the Stadium 122SSI with a mono amplifier rated 400–500W RMS at your chosen impedance — the JBL Club A5055's 500W RMS sub channel at 2 ohms is a natural match. Use a ported enclosure tuned to 30–35Hz for maximum low-frequency extension and output, or a sealed enclosure for tighter, more accurate bass. Ideal for daily listening, SQL (Sound Quality Listening), and enthusiast builds where both output and accuracy matter.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the JBL Stadium 122SSI?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSI™ Selectable Smart Impedance:\u003c\/strong\u003e Switch between 2 ohms and 4 ohms to match your amplifier's optimal output impedance — no rewiring, no separate DVC configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" Aero-Cooled Voice Coil:\u003c\/strong\u003e Moving-air cooling keeps thermals low during high-output operation for consistent performance and long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500W RMS \/ 1,500W Peak Power Handling:\u003c\/strong\u003e Serious headroom for high-powered mono amplifiers without distortion or thermal compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e92dB Sensitivity:\u003c\/strong\u003e Efficient design delivers strong bass output without taxing your amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25Hz – 175Hz Frequency Response:\u003c\/strong\u003e Deep infrasonic extension down to 25Hz — you'll feel it as much as hear it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 AWG Terminal Compatibility:\u003c\/strong\u003e Integrated push terminals accept up to 8 AWG wire for low-resistance, high-current delivery at rated power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStadium Series Engineering:\u003c\/strong\u003e Built to the same standards as JBL's flagship Stadium Series speakers — consistent sonic character across the full system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Amplifier Compatibility:\u003c\/strong\u003e 2 or 4 ohm operation means it works with virtually any mono amplifier on the market.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAmplifier \u0026amp; Enclosure Recommendations\u003c\/h2\u003e\n\u003cp\u003ePair the Stadium 122SSI with a mono amplifier rated 400–500W RMS at your chosen impedance. At 2 ohms, the JBL Club A5055's 500W RMS sub channel is a perfect match. At 4 ohms, any quality mono amp rated 300–500W RMS will work well. For enclosures: a ported box tuned to 30–35Hz maximizes low-frequency extension and output — ideal for hip-hop, EDM, and bass-heavy music. A sealed enclosure delivers tighter, more accurate bass with better transient response — ideal for rock, jazz, and SQL listening. Set your amplifier's low-pass crossover at 80Hz and subsonic filter at 25Hz for ported enclosures. Use 4-gauge power and ground wire to your amplifier, and 8 AWG or heavier speaker wire from amp to sub.\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\u003eStadium 122SSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e12\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Handling (RMS)\u003c\/td\u003e\n\u003ctd\u003e500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Handling (Peak)\u003c\/td\u003e\n\u003ctd\u003e1,500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity (@ 2.83V\/1m)\u003c\/td\u003e\n\u003ctd\u003e92dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e25Hz – 175Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e2 or 4 ohms (SSI™ Selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoice Coil Diameter\u003c\/td\u003e\n\u003ctd\u003e2\" (50mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoice Coil Cooling\u003c\/td\u003e\n\u003ctd\u003eAero-Cooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Compatibility\u003c\/td\u003e\n\u003ctd\u003eUp to 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutout Diameter\u003c\/td\u003e\n\u003ctd\u003e28.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Depth\u003c\/td\u003e\n\u003ctd\u003e18.0 cm\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: How does the SSI™ Selectable Smart Impedance work?\u003c\/strong\u003e\u003cbr\u003eA: The Stadium 122SSI has a built-in impedance selector that lets you configure the subwoofer at either 2 ohms or 4 ohms. Select 2 ohms to maximize power output from a high-current amplifier, or 4 ohms for cleaner, more efficient operation. No rewiring or separate DVC wiring configurations required — just select your impedance and connect.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What amplifier pairs best with the Stadium 122SSI?\u003c\/strong\u003e\u003cbr\u003eA: A mono amplifier rated 400–500W RMS at your chosen impedance is ideal. At 2 ohms, the JBL Club A5055's 500W RMS sub channel is a natural match. At 4 ohms, any quality mono amp rated 300–500W RMS will work well. Contact us at Trinity Car Audio for a specific amp recommendation based on your system goals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What enclosure type should I use with the Stadium 122SSI?\u003c\/strong\u003e\u003cbr\u003eA: A ported enclosure tuned to 30–35Hz maximizes low-frequency extension and output — ideal for bass-heavy music genres. A sealed enclosure delivers tighter, more accurate bass with better transient response — ideal for SQL listening and music accuracy. Contact us at Trinity Car Audio for specific enclosure volume and tuning recommendations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I choose Dual 2 Ohm or Dual 4 Ohm?\u003c\/strong\u003e\u003cbr\u003eA: Choose based on your amplifier's optimal output impedance. If your amp puts out its rated power at 2 ohms, select the 2-ohm configuration for maximum power transfer. If your amp is rated at 4 ohms, select the 4-ohm configuration for cleaner, more efficient operation. When in doubt, contact us at Trinity Car Audio and we'll match you to the right configuration for your amp.\u003c\/p\u003e","brand":"JBL","offers":[{"title":"Dual 2 Ohm","offer_id":43698311888963,"sku":"JBLSUBSD122SSIAM-1","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":43698311921731,"sku":"JBLSUBSD122SSIAM-2","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/9575\/7123\/files\/FRONT_WEB_JBL_Stadium_122SSI_1605.png?v=1787261164","url":"https:\/\/www.trinitycaraudio.com\/products\/jbl-stadium-122ssi-car-audio-subwoofer","provider":"Trinity Car Audio","version":"1.0","type":"link"}