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The JBL Stage 1200D Dual 12″ 2-Ohm Subwoofer Enclosure is a powerful, slot-ported car audio solution loaded with two Stage 122AM 12-inch subwoofers. Designed for real-world installations, it delivers deep, impactful bass in a compact footprint, making it perfect for rear trunks, hatchbacks, or customized builds where space is limited yet performance is non-negotiable.

This unit is brand new, factory-sealed, and ready for installation into modern aftermarket or OEM-upgrade vehicle audio systems. It comes preloaded and carpet-covered for an easy drop-in upgrade without needing to build a custom box.

Key Benefits

• Loaded with two premium 12″ woofers wired to present a 2-ohm load, enabling high power draw and deep bass response.
• Handles up to 500 W RMS (or up to ~600 W RMS per some specs) and around 1000-1200 W peak power, giving serious output for mono amplifiers.
• Slot-ported enclosure and 5/8″ MDF construction wrapped in black carpet for durability plus improved efficiency in bass reproduction.
• Compact dimensions compared to many dual-12″ enclosures (30″ wide × 15″ high), allowing better fitment in many vehicles.

Technical Specifications

• Woofer Size: Dual 12″ (300mm) subwoofers
• Impedance: 2 Ω final load (dual woofers at 4 Ω each wired)
• RMS Power Handling: ~500 W RMS (some listings say 600 W RMS)
• Peak Power Handling: ~1000 W – 1200 W Peak
• Frequency Response: 34 Hz – 200 Hz
• Sensitivity: 94 dB

Installation & Compatibility

This enclosure is ideal for users who want substantial bass output without the challenge of building a custom sub box. Simply position the box in the trunk or rear area, ensure adequate amplifier power (matching or slightly below the RMS rating), secure the enclosure, and wire it to a mono amplifier optimized for 2-ohm loads. Because it’s a high-output dual-12″ setup, proper power wiring, battery/fuse setup and trunk ventilation are important. For best results and system reliability, use trusted U.S. retailers like Livewire Audio for purchase and support.

FAQS

• What type of amplifier is the JBL 1200D?
  It’s a monoblock amplifier designed to power subwoofers with strong, reliable bass output.
• Is the JBL 1200D good for a single 12-inch subwoofer?
  Yes, it provides plenty of power for most 10-inch and 12-inch subs.
• Does the JBL 1200D have built-in protections?
  It includes thermal, overload, and short-circuit protection to keep your system safe.
• Is the JBL 1200D easy to tune?
  Yes, it features adjustable filters and controls that make fine-tuning simple.