Audio Dynamics AD1412 D4 12 inch Subwoofer

AD1412 D4 12" Subwoofer

Dual 4Ω Voice Coils – Linear Performance – Enclosure Versatility

Linear Bass Response

Optimized for linear performance with balanced Qts (0.764) and low Fs (44.14 Hz). Delivers accurate, musical bass reproduction without boom or overhang – just clean, controlled low frequencies as the artist intended.

Dual 4Ω Voice Coils

Precision-wound dual 4-ohm voice coils provide wiring flexibility. Configure for 2-ohm (parallel) or 8-ohm (series) final impedance to match amplifier capabilities. Maximum versatility for system integration.

Enclosure Versatility

Engineered for medium-sized sealed (1.25 cu ft minimum), vented (2.00 cu ft minimum), or infinite baffle installations. Pre-designed enclosures available for sedan, SUV, and truck applications.

75W – 300W Power Range

Optimal power range accommodates everything from modest factory upgrades (75W) to serious aftermarket amplification (300W). High efficiency (87.94 dB) ensures impressive output across the entire power spectrum.

USA Engineering

Engineered in the USA with attention to every detail. Thiele-Small parameters are carefully optimized for real-world performance in typical automotive installations – not just anechoic chamber measurements.

Durable Construction

Robust cone and surround materials withstand high-powered playback. Rigid frame construction minimizes resonance. Built for long-term reliability in demanding automotive environments.

Sealed Enclosure

Minimum Net Volume: 1.25 cu ft (35 liters)

Ideal for tight, accurate bass response. Sealed alignments provide the most controlled low-frequency reproduction with minimal group delay. Perfect for SQ-focused installations prioritizing accuracy over maximum output.

Vented (Ported) Enclosure

Minimum Net Volume: 2.00 cu ft (56 liters)*

Ported designs offer increased output and extended low-frequency response. Tune frequency should be selected based on desired response characteristics. Excellent for balanced SPL/SQ installations.

*Tune for desired response characteristics

Infinite Baffle

The AD1412 D4 is Infinite Baffle Approved for installations utilizing the vehicle's trunk or rear deck as the enclosure. IB installations provide smooth, natural bass response with minimal cone loading. Ideal for sedan and coupe applications with adequate rear deck mounting locations.

📐 Pre-Designed Enclosures Available: Audio Dynamics offers professionally engineered enclosure designs optimized for sedan, SUV, and truck applications. Each design is balanced for both voice coil configurations (D2 and D4) and cabin acoustics. Visit the manufacturer's Enclosure Design Service for custom solutions.

⭐ Expert Verdict: STRONG BUY

"The Daily-Driver Subwoofer for Enthusiasts"

The Audio Dynamics AD1412 D4 hits the sweet spot that many subwoofer manufacturers miss – optimized for real-world automotive installations without requiring massive power or custom enclosures. This is the subwoofer for enthusiasts who want accurate, musical bass reproduction in a daily-driver vehicle, not a dedicated SPL competition machine.

Sound quality is the star. With Qts of 0.764 and Fs of 44.14 Hz, the AD1412 D4 delivers controlled, linear bass response without the boom and overhang typical of over-damped competition subs. Bass notes start and stop precisely, with no lingering resonance. Low-frequency extension is impressive – you'll feel the deep fundamentals of electronic music and orchestral bass without artificial enhancement.

Versatility is exceptional. The dual 4-ohm configuration provides maximum flexibility for system integration, while compatibility with sealed, vented, and infinite baffle enclosures means you're not locked into a single installation approach. Pre-designed enclosures for common vehicle types eliminate guesswork for DIY installers.

At $149.99 (25% off), the AD1412 D4 delivers outstanding value in the 12" subwoofer category. Compare it to entry-level models at $100-$120 and the difference in T/S parameter optimization and build quality is immediately apparent. Yet it costs significantly less than boutique competition subs requiring kilowatts of power.

Bottom line: The AD1412 D4 is the ideal subwoofer for enthusiasts building SQ-focused systems in daily-driver vehicles. If you prioritize accurate, musical bass reproduction over maximum SPL and want installation flexibility across multiple enclosure types, this subwoofer delivers exceptional performance at a very competitive price. Highly recommended for intermediate builds with 100-300W amplification.