12" Subwoofer

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12" Champion Series Subwoofer with Dual 4 Ohm Voice Coil IMPP Composite Cone Dual-Layer Elastic Polymer Surround Single Piece Basket Design
Pioneer TS-W311D4 12" DVC Subwoofer (TS-W311D4)
Max. Music Power (Nominal)1,400W (400W)
Cone CompositionIMPP Composite Cone
Surround CompositionDual Layer Fiber Reinforced Elastic Polymer Surround
Impedance4 Ohms x 2
Frequency Response20Hz - 125Hz (-20 dB)
Sensitivity (IN CAR, INPUT: 1W)95 dB
12" Champion Series Subwoofer with Dual 4 Ohm Voice Coil IMPP Composite Cone Dual-Layer Elastic Polymer Surround Single Piece Basket Design
Infinity Reference 12" Slim Subwoofer (REF-1200S)
Infinity Reference 12" Slim Subwoofer
Infinity’s latest Reference subwoofers offer incredible installation flexibility. Their low-profile design allows them to fit perfectly into even the most shallow of enclosures — great for today’s compact cars. Polypropylene woofer cones deliver exceptional bass response at frequencies as low as 27Hz. But what makes these subs really stand out is their Harman-proprietary SSITM (Selectable Smart Impedance), which allows the subwoofer to present the amplifier with either a 2 or 4 ohm load at the flip of a switch.


Low-Profile Design

Because today’s compact cars offer less space, the Infinity Reference Subwoofers are designed to fit into small enclosures. They’re slim, sleek, stylish, and don’t sacrifice on sound.

Harman-Proprietary SSITM (Selectable Smart Impedance)

Unlike most dual-voice coil woofers, which provide either 1 or 4 ohms or 2 or 8 ohms, the Infinity Reference Subwoofers allow the listener to 2-ohm and 4-ohm at the flip of a switch, providing the two most often used impedances from a single woofer. This allows the system designer unparalleled flexibility in extracting every last watt from your amplifier without compromising stability and thermal safety margins.

Frequency Response As Low as to 27Hz

Your audio is filled with delicious sounds. Unfortunately, you’re not always hearing them all. With lows that dig down into the depths of 27Hz, you’ll hear the low-end frequencies you’ve been missing.

OEM-Level Reliability Testing

Infinity tests every speaker design to the same rigid specifications as the automakers, subjecting them to extreme conditions that would break lesser speakers. We freeze them, bake them, shake them, blast them with ultraviolet light and drive them at full power for days to make sure your audio investment lasts for years.

General Specifications

12” Shallow Mount Subwoofer

Audio Specifications

Nominal Impedance
2 ohm or 4 ohm, switch selectable
Power Handling (RMS)
Power Handling (Peak)
Frequency Response
27 – 175 Hz


Diameter (in)
Mounting Diameter (in)
Mounting Depth (in)

12" Bakkie Subwoofer 250w RMS
Targa TG-1204DW 12" DVC Subwoofer (TG-1204DW)
Targa TG-1204DW 12" DVC Subwoofer
Fs (free air resonance):   32.1 Hz
SPL (efficiency, 1W/1M):   89.1 dB
Nominal Inpedance:   2/4/8 Ω
Qts (total speaker "Q"):    0.42
Qes (electrical "Q"):   0.46
Qms (mechanical "Q"):   4.74
Vas (equivalent compliance):   75.9 L

*image for illustration purpose only*
650 x 2 RMS DVC Subwoofer
Hertz ES300D 12" Subwoofer (ES300D)
Hertz ES300D 12" Subwoofer

The Hertz Energy ES 300D car audio subwoofers offer a dynamic bass and are capable of outstanding SPL never achieved in this category of the market.
The introduction of the V-cone® technology had a big impact in the efficiency of the ES subwoofers, also improving cone stiffness and reducing the weight of the moving assembly, allowing a higher strength voice coil for a higher peak power handling.
The implementation of the surround and spider geometry, as well as the selection of the materials used, contributed to achieving unmatched mechanical and thus acoustical linearity.
This, combined with a drastic reduction of the Vas, provides the ability to achieve high undistorted SPL output in even small enclosures.
The Hertz Energy subwoofers are the perfect choice for solid, powerful bass in perfect harmony with improved vehicle integration.

Size mm (in.)300 (12)
Power Handling - Peak W1050
Power Handling - Continuous W350
Impedance4 + 4
Frequency response Hz25 ÷ 250
Sensitivity dB SPL93,5
Voice coil Ø mm (in.)60 (2.4)
Xmax mm9
X-mech mm (in.)14,7 (0.58)
Re2 (parallel)
Fs Hz40
Vas l44,7
Spl dB93,5
12" Subwoofer Energy Series 350w RMS
Alpine SWT-12s4 12" Bass Reflex Subwoofer (SWT-12S4)
Alpine SWT-12S4 12" Bass Reflex Subwoofer
With 1000W peak power handling, this ready-to-use bass reflex subwoofer tube is just the thing for big bass fans. A protective grille ensures that nothing sliding around in the trunk damages the woofer.
12" 1000w Subwoofer
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