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  5. 112a-D4
DD Audio 112a-D4 12" (30cm) Subwoofer
SKU:  112a-D4
EAN:  0850054251510

2 Reviews

300 Watt

112a-D4

SKU:  112a-D4
EAN:  0850054251510

2 Reviews

Technical Highlights

  • Power 250 watts RMS, peak power 1950 watts, impedance D4.
  • Cooling slots in the basket, gap ventilation of the coil, extended pole piece.
  • Double stitched EROM beads, laminated double layer spiders.
  • More technical details
€89,00
€89,00 €89,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Only a few left in stock (5 pieces available)
In stock
May 16, - May 17,
x Piece
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112a-D4 by DD Audio

The 112a-D4 is a 12-inch (30 cm) Subwoofer from DD Audio with double-stitched EROM surrounds, laminated dual-layer spiders, and non-pressed paper cones. The basket features cooling slots, complemented by gap ventilation of the coil on the back plate and an extended pole shoe. The nominal power is 250 Watts RMS, the peak power is 1950 Watts, and the impedance is D4. The voice coil has a diameter of 50.8 mm. Fs 32 Hz, Qms 6.21, Qes 1.08, Qts 0.92, and Vas 64.14 liters. BL 14 Tm, Xmax 10 mm, and Xmech 30 mm. Frame outer diameter 310 mm, with gasket 314 mm, mounting diameter 279 mm. Motor diameter 43 mm, motor depth 130 mm, woofer displacement 0.14 liters, and enclosure with opening 22.6 - 56.6 liters.

Features
  • 12-inch (30 cm) Subwoofer
  • 250 Watts RMS
  • 1950 Watts peak
  • Impedance: D4
  • Double-stitched EROM surrounds
  • Laminated dual-layer spiders
  • Non-pressed paper cones
  • Basket with cooling slots
  • Gap ventilation of the coil on the back plate
  • Extended pole shoe
Technical Specifications
  • Speaker size: 12-inch (30 cm)
  • Voice coil diameter: 50.8 mm
  • Fs: 32 Hz
  • Qms: 6.21
  • Qes: 1.08
  • Qts: 0.92
  • Vas: 64.14 liters
  • BL: 14 Tm
  • Xmax: 10 mm
  • Xmech: 30 mm
  • Frame outer diameter: 310 mm
  • Frame outer diameter with gasket: 314 mm
  • Mounting diameter: 279 mm
  • Motor diameter: 43 mm
  • Motor depth: 130 mm
  • Woofer displacement: 0.14 liters
  • Enclosure with opening: 22.6 - 56.6 liters

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Frequently Asked Questions about 112a-D4

What are the technical features of the 112a-D4 Subwoofer from DD Audio?

The 112a-D4 Subwoofer from DD Audio impresses with a variety of technical features. The 12-inch subwoofer has double-stitched EROM surrounds that ensure durability during intense bass playback. Additionally, laminated double-layer spiders are integrated, providing extra stability. The unpressed paper cone ensures precise sound reproduction. Unique to the 112a-D4 is the basket with cooling slots, which efficiently regulates operating temperature. The gap ventilation of the coil and an extended pole shoe optimize cooling and reduce distortion. All these components together allow for an impressive peak power of 1950 watts with an RMS power of 250 watts and an impedance of D4.

What power does the 112a-D4 Subwoofer deliver?

The 112a-D4 Subwoofer from DD Audio has a rated power of 250 watts RMS, meaning it can handle this power continuously without damage. However, the peak power of the 112a-D4 is an impressive 1950 watts, easily supporting short-term power demands. This makes the subwoofer ideal for intense music playback with strong bass. The optimized cooling design through built-in cooling slots in the basket and the gap ventilation of the coil allows it to maintain stable performance even at high volumes. This woofer is particularly suitable for music lovers who value dynamic bass.

What are the installation dimensions of the 112a-D4 Subwoofer?

The 112a-D4 Subwoofer from DD Audio is designed for thoughtful integration. The frame outer diameter is 310 mm, with the gasket increasing this to 314 mm. The mounting diameter is 279 mm, making it compatible with most standard subwoofer enclosures. With a mounting depth of 129 mm, the woofer can be installed even in tighter enclosures. This is crucial for proper enclosure fitting to achieve the best possible acoustics. The calculation of displacement and the required enclosure volume is also simplified by its displacement of 0.14 liters.

How do the EROM surrounds of the 112a-D4 affect performance?

The double-stitched EROM surrounds of the 112a-D4 Subwoofer from DD Audio enhance the durability and flexibility of the speaker signal. They provide increased load capacity as they efficiently dampen vibrations and stabilize the movement of the diaphragm. Especially when you enjoy listening to music loudly, this design ensures that distortion-free playback is achieved even at high volumes. This keeps the sound clean and dynamic. This not only favors sound quality but also increases the lifespan of the Subwoofer by reducing mechanical stress.

What does the impedance D4 mean for the 112a-D4 Subwoofer?

The 112a-D4 Subwoofer from DD Audio is equipped with a dual voice coil that has an impedance of D4. This means that each coil has a resistance of 4 ohms, allowing flexibility in connection. You can connect the Subwoofer either in series or parallel to adjust the total impedance to the Amplifier. This versatility makes it easier to integrate into various car audio systems without limitations on the power amplifier. With the ability to vary the impedance through correct wiring, the Woofer supports different power amplifiers and sound requirements.

What frequency range can the 112a-D4 Subwoofer reproduce?

The 112a-D4 Subwoofer from DD Audio is characterized by its frequency response, which is optimal for deep bass reproduction. With a resonant frequency point (Fs) at 32 Hz, it is capable of reproducing extremely low tones clearly. This is particularly suitable for genres that benefit from deep bass, such as Dubstep or Hip-Hop. Due to the low Qts value of 0.92, the Woofer achieves very precise bass reproduction without mechanical overload. The combination of these technical features allows for maximum bass enhancement while remaining detailed.

How does the unpressed paper diaphragm affect the sound quality of the 112a-D4?

The unpressed paper diaphragm used in the 112a-D4 Subwoofer from DD Audio is crucial for authentic music reproduction. It offers natural and precise sound reproduction, as the material is lightweight and stiff. This achieves quick responsiveness without losing the details of the audio signal. Compared to other materials, the paper structure reduces distortion, especially at high volumes. Therefore, this Subwoofer is particularly suitable for listeners who appreciate acoustic purity and unembellished musicality.

What design features support the cooling of the 112a-D4 Subwoofer?

The 112a-D4 Subwoofer from DD Audio has a well-thought-out cooling architecture that prevents overheating. The special design of the basket with integrated cooling slots ensures continuous air circulation around the coil. Additionally, the venting of the coil on the back plate efficiently supports heat dissipation. An extended pole shoe also contributes to heat removal by directing heat away from the coil. This sophisticated cooling prevents thermal stress, ensuring consistent performance even during long operating times and high power demands.

How does the 112a-D4 integrate into enclosures with openings?

For the 112a-D4 Subwoofer from DD Audio, an enclosure volume between 22.6 and 56.6 liters is recommended to unleash its full sonic capabilities. The correct enclosure choice significantly affects bass reproduction. A larger enclosure provides deeper bass with lower amplifier load, while a smaller enclosure allows the woofer to play more compressed. With an enclosure displacement of 0.14 liters, the subwoofer integrates perfectly and produces powerful, full-bodied bass. For precise results, the woofer should be installed correctly to minimize distortion from unwanted resonances.

What Thiele-Small parameters characterize the 112a-D4 Subwoofer?

The Thiele-Small parameters of the 112a-D4 Subwoofer from DD Audio provide information about its behavior in various enclosure settings. The Qms value of 6.21 indicates a high mechanical quality, while the Qes of 1.08 shows that the woofer is well damped against electrical influences. A combined Qts of 0.92 means it is ideal for closed and bass reflex enclosures. The Vas is 64.14 liters, allowing for precise calculation of the enclosure volume for optimal bass performance. The BL product of 14 TM indicates strong motor control, making the woofer very efficient.

Manufacturer information / responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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