3. SPL speakers and subwoofers for cars
  5. 312e

312e

312e

Technical Highlights

  • Power 500 W RMS/1500 W Peak, Dual 4 Ohm, 2.5-inch voice coil.
  • 37 Hz resonant frequency, Qms 5.44, fiberglass reinforced cone.
  • Xmax 14 mm excursion, 100 oz magnet, Free Flow Cooling System.
  • More technical details
€149.00
€149.00 €149.00
2% discount with credit card
including VAT
Impedance: D2
Estimated delivery: Sep 18–Sep 25.
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DD Audio-312e-12" (30cm) Subwoofer-masori-kaufen
€149.00
€149.00 €149.00

The DD Audio 312e is a 12-inch subwoofer that offers impressive bass performance with high efficiency and compact design in the latest 300 "e" revision. It features a 2.5-inch high-temperature voice coil and a 100oz magnet, providing reliable performance from 500 W RMS to 1500 W Peak. The fiberglass-reinforced paper cone and Free Flow Cooling System optimize sound quality and durability. A dual 4 Ohm voice coil allows for versatile connection options, and the newly designed basket and motor with DD branding enhance stability and ventilation. Together with increased excursion, this subwoofer delivers precise, deep bass and high dynamics, ideal for sound enthusiasts with space-saving systems.

Features

  • 12-inch subwoofer in the 300 "e" revision
  • 2.5-inch high-temperature voice coil
  • Fiberglass-reinforced paper cone
  • Free Flow Cooling System
  • New basket and motor design with DD branding
  • Dual 4 Ohm voice coil for flexible connection

Technical Specifications

  • Speaker size 30 cm
  • Power handling 500 W RMS / 1500 W Peak
  • Impedance Dual 4 Ohm
  • Voice coil 2.5 inches
  • Fs 37 Hz
  • Qms 5.44
  • Qes 0.73
  • Qts 0.64
  • Vas 22.31 l
  • BL 26 Tm
  • Xmax 14 mm
  • Xmech 30 mm
  • Outside diameter (with gasket) 31.5 cm
  • Mounting diameter 35.3 cm
  • Installation depth 18.6 cm
  • Motor diameter 17 cm
  • Motor depth 6.58 cm
  • Magnet weight 100 oz
  • Woofer displacement 2.83 l
  • Recommended enclosure volume (ported) 35.4–42.5 l
  • Shipping weight 8.6 kg

Frequently Asked Questions about 312e

What special features does the DD Audio 312e offer in terms of performance specifications?

This 12-inch subwoofer delivers a robust continuous power handling of 500 W RMS thanks to its 2.5-inch high-temperature voice coil, reaching peak moments of 1500 W. A 100oz magnet ensures efficient power transfer to the fiberglass-reinforced paper cone. The Free Flow Cooling System optimally ventilates the voice coil, reducing thermal stress at high sound pressure levels. The dual 4-ohm voice coil provides flexible wiring options and allows for various impedance configurations. If you enjoy listening to deep frequencies at high levels, the combination of the new basket and motor design enhances stability. With a displacement of 14 mm in the Xmax range, you can expect powerful bass impulses for deep bass foundations.

What role does the basket and motor design play in the DD Audio 312e?

The newly designed basket and motor design optimizes air circulation, as the Free Flow Cooling System can directly bring fresh air to the high-temperature voice coil. Additionally, the stable basket promotes cooling through strategically placed openings, reducing thermal stress even during prolonged use. At the same time, the mechanics have been designed for stiffness to handle strong bass impulses, keeping vibrations in the low-frequency range under control. The improved motor symmetry allows for more uniform drive of the cone, minimizing distortion and supporting precise bass reproduction. Especially at high sound pressure levels, it effortlessly handles transient impulses without sacrificing stability or sound definition. This increases operational reliability.

How can I optimally utilize the impedance of the dual 4-ohm voice coil in the DD Audio 312e?

The dual 4 Ohm voice coil gives you various connection options, as you can wire both voice coils in series or parallel. If you connect both windings in series, you get a total impedance of 8 Ohm, which can simplify load distribution for systems with multiple subwoofers. On the other hand, if you use the parallel connection, the total configuration is 2 Ohm, allowing you to draw more amplifier power. This increases the potential to push the subwoofer harder with identical amplifier specifications. You can also connect each individual voice coil to different amplifier channels if the setup is designed for it. This way, you achieve maximum flexibility and a balanced bass performance. Recommended in every operating mode.

Why is the diaphragm of the DD Audio 312e made of fiberglass-reinforced paper?

The combination of paper fibers and fiberglass provides an ideal balance between weight and stability, ensuring precise diaphragm movement throughout the entire stroke range. Paper has excellent acoustic properties such as good internal damping, which reduces resonances and allows for clean bass. The incorporation of fiberglass also increases structural strength, so that even under high loads and rapid diaphragm movements, deformation is minimal. This keeps the sound reproduction defined even at high levels. Especially if you enjoy listening to music loudly and want to reproduce deep frequency ranges accurately, you benefit from this lightweight design in the form of a firm yet resilient diaphragm. This construction significantly enhances efficiency.

How does the Free Flow Cooling System affect the performance of the DD Audio 312e?

The Free Flow Cooling System increases air circulation around the 2.5-inch voice coil by directing cool outside air to critical areas. Especially under high power demands, this airflow prevents heat buildup and performance losses due to thermal compression. The voice coil can thus be operated at high levels for longer periods without diminishing sound precision. At the same time, the improved ventilation minimizes wear on thermally sensitive components. This makes this massive sub-bass speaker suitable for dynamic music genres with large level jumps. Thus, you benefit from consistent level reserves, stable voice coil temperature, and an overall responsive low-frequency foundation. It guarantees constant performance during demanding bass passages.

Which Thiele-Small parameters are particularly relevant and how do they affect the bass of this Subwoofer?

With the DD Audio 312e, the Thiele-Small parameters are quite pronounced: With a resonant frequency Fs of 37 Hz, it is well-suited for deep bass reproduction, especially in a cabinet volume between 35.4 and 42.5 liters. The Qms of 5.44 and the Qes of 0.73 result in a Qts of 0.64, indicating a mix of efficiency and control, especially if you want to achieve powerful bass. The BL value of 26 Tm indicates strong driving characteristics, while the Vas of 22.31 liters shows that the Subwoofer requires a relatively compact enclosure. Thanks to an Xmax of 14 mm and Xmech of 30 mm, you have enough headroom for dynamic bass impulses.

How loud can this 12-inch woofer play without increasing distortion?

The DD Audio 312e allows for impressive sound pressure levels thanks to its 2.5-inch high-temperature voice coil and 100oz magnet, without distorting prematurely. The fiberglass-reinforced paper cone keeps the cone weight low, which enhances efficiency, while the newly designed basket and motor design provide additional stability. Especially when you drive the Subwoofer in levels that reach club-like volumes, it can fully utilize the Xmax of 14 mm. This way, impulse fidelity and bass linearity are largely maintained even with intense transients. In conjunction with the Free Flow Cooling System, the risk of thermal overload is reduced, keeping pulse widths and sound fidelity consistent. Perfect for extremely bass-intensive music genres.

What enclosure recommendations are there for this 12-inch Subwoofer for optimal deep bass?

For the DD Audio 312e, ported enclosures with a volume of 35.4 to 42.5 liters are recommended to achieve a balanced mix of deep bass and level stability. Due to the relatively low Vas of 22.31 liters and a Qts of 0.64, you should choose the tuning carefully to ensure that the diaphragm remains adequately controlled at low frequencies. With a generously sized channel or pipe, you can reduce disturbing airflow noises, especially if you enjoy hip-hop or electronic music genres. The fiberglass-reinforced paper diaphragm shows its strengths here by being able to handle strong impulses without distortion. This gives you powerful, precise bass. Enjoy structured sub-frequencies.

How do I install this 12-inch subwoofer in terms of mounting diameter and installation depth?

The DD Audio 312e requires sufficient space in the baffle due to its outer diameter of 31.5 cm including gasket and a mounting diameter of 35.3 cm. Additionally, you should consider the installation depth of 18.6 cm to ensure that the magnet area with a diameter of 17 cm and a motor depth of 6.58 cm sits freely and that no components inside the enclosure are obstructed. Therefore, plan enough space behind the sub-bass chassis so that the Free Flow Cooling System can operate unhindered. Especially when you are using an enclosure that adheres to the recommended 35.4–42.5 liters, a careful layout is advisable to minimize vibrations. This promotes stable resonance.

How does the high excursion affect this 12-inch subwoofer?

With the DD Audio 312e, the combination of 14 mm Xmax and 30 mm Xmech provides impressive excursion capability, allowing for deep bass without early bottoming out. Especially if you prefer material-intensive music styles, the diaphragm benefits from this larger range of motion. Since the fiberglass-reinforced paper diaphragm has a low self-weight, it can realize the excursion paths quickly without losing impulse fidelity. At the same time, the robust motor design supports the precise guidance of the voice coil carrier in this extended range. This allows the 12-inch subwoofer to produce powerful deep bass foundations that maintain their clarity even at higher levels. For you, this means effective use of the considerable load capacity. Even with aggressive sub-bass sequences, it is convincing.

Manufacturer information/responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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