3. Single subwoofer bundle from €400
  5. Power Tuned 9921b

Power Tuned 9921b

2500 Watt

Power Tuned 9921b

Technical Highlights

  • RMS power: 2500 watts, peak: 10000 watts, dual 1/2 ohm.
  • Patented ferrite magnet system, extended linear suspension.
  • Subwoofer diameter: 53cm, magnet weight: 1500 oz, Xmax +-22mm.
  • More technical details
€2,059.00
€2,059.00 €2,059.00
2% discount with credit card

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ProductPower Tuned 9921b · D1 (2x1 Ohm) / Yes

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Impedance: D1 (2x1 Ohm)
SuperCharge: Yes
Estimated delivery: Oct 9–Oct 16.
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The DD Audio Power Tuned 9921b is a large black and silver 21 subwoofer with exposed wiring, a visible red coil, and a strong ferrite magnet system.
€2,059.00
€2,059.00 €2,059.00

Compatible with Power Tuned 9921b

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    2500 Watt

    M2500

    €799.00
    €799.00 €799.00
    DD Audio
  • Masori-Perfect Match G-Klasse Stage 2-Mercedes-Komplettset-masori-kaufen
    3000 Watt

    SS3000

    €399.00
    €399.00 €399.00
    DD Audio

The DD Audio Power Tuned 9921b is a 21 inch Subwoofer (53 cm) with 2500 Watts RMS and 10000 Watts peak power. Impedance options are available as Dual 1 Ohm or Dual 2 Ohm. The patented ferrite magnet system, lossless linear suspension, and ribbed foam surround are integrated. An aluminum die-cast basket and a magnet protection cap with grille before the pole core drilling are present. Technical specifications include a frequency response of 10–500 Hz, Xmax of ±22 mm, Re of 0.9 Ohm, Fs of 26.24 Hz, Qms of 5.265, Qes of 0.51, Qts of 0.47, and Vas of 161.9 L. The voice coil diameter is 101.6 mm, and the magnet weight is 42.52 kg.

Features
  • 21 inch Subwoofer (53 cm)
  • Power handling (RMS): 2500 Watts
  • Peak power handling: 10000 Watts
  • Impedance options: Dual 1 Ohm or Dual 2 Ohm
  • Patented ferrite magnet system
  • Lossless linear suspension
  • Ribbed foam surround
  • Magnet protection cap including grille before the pole core drilling
  • Aluminum die-cast basket
Technical specifications
  • Frequency response: 10–500 Hz
  • DC resistance (Re): 0.9 Ohm
  • Resonance frequency (Fs): 26.24 Hz
  • Mechanical quality factor (Qms): 5.265
  • Electrical quality factor (Qes): 0.51
  • Total quality factor (Qts): 0.47
  • Equivalent volume (Vas): 161.9 L
  • Xmax: ±22 mm
  • Magnet weight: 42.52 kg
  • Voice coil diameter: 101.6 mm

DD Audio Custom Subwoofer – Design your own!

Our DD Audio Custom Subwoofers are not only a highlight in sound – they are built exactly to your specifications! Choose colors for the basket, dustcap, membrane, and more. Additionally, a selection of logos is available.

Available colors for membrane & dustcap:
Red
(Carbon)
Black
(Carbon)
Light Blue
(Carbon)
Blue
(Carbon)
Platinum
(Carbon)
White
(Carbon)
Yellow
(Kevlar)

Do you want more than standard? Now customize your Subwoofer and discover all options:

To the custom options

Frequently Asked Questions about Power Tuned 9921b

What power does the Power Tuned 9921b Subwoofer offer?

The Power Tuned 9921b Subwoofer from DD Audio impresses with an RMS power of 2500 watts and a peak power of 10000 watts. This immense capacity allows for powerful and clear reproduction of deep bass. These performance features are particularly beneficial for listeners who value exceptional bass sound, especially at high volumes. The combination of high power and the patented ferrite magnet system ensures lossless sound reproduction that meets even the most demanding requirements. Such power levels are rare in commercially available models, which is why the 9921b is a special recommendation for sound enthusiasts.

What impedance options are available for the Power Tuned 9921b?

The Power Tuned 9921b Subwoofer offers two impedance options: Dual 1 Ohm or Dual 2 Ohm. These options provide high flexibility to adapt the subwoofer to different amplifier configurations. Especially when you want to operate multiple subwoofers in a system, choosing the right impedance is crucial for optimal power delivery and overall sound quality. With the correct setting, you can minimize distortion and optimize the performance of the entire audio system. This is particularly important when aiming for high volumes without sacrificing quality.

What frequencies can the Power Tuned 9921b reproduce?

The playback range of the Power Tuned 9921b Subwoofer extends from 10 Hz to 500 Hz. This bandwidth provides an excellent foundation for reproducing deep bass frequencies that are crucial in music and film soundtracks. Particularly, the ability to reproduce extremely low frequencies at 10 Hz sets it apart from many competing products and is ideal for bass enthusiasts. Combined with its high power capacity, this frequency range ensures that the subwoofer delivers exceptional performance in both home theater applications and professional audio settings.

How does the ribbed foam surround affect the performance of the subwoofer?

The ribbed foam surround of the Power Tuned 9921b significantly contributes to its sound precision and durability. This special design ensures greater stability at high excursions, which in turn minimizes distortion. This feature is important to ensure that the Subwoofer maintains clear and precise playback even at high volumes. The high-quality foam surround also supports smooth movement of the speaker, which ensures consistent sound reproduction across its entire frequency range. This is a significant advantage, especially for bass-intensive music.

What are the Thiele-Small parameters of the Power Tuned 9921b?

The Thiele-Small parameters of the Power Tuned 9921b Subwoofer include a resonance frequency (Fs) of 26.24 Hz, a mechanical quality factor (Qms) of 5.265, an electrical quality factor (Qes) of 0.51, and a total quality factor (Qts) of 0.47. The equivalent volume (Vas) is 161.9 liters. These parameters are crucial for calculating and designing speaker enclosures to achieve optimal acoustic performance. They influence aspects such as bass depth and sound conversion efficiency. These values are particularly interesting for technically skilled users who develop custom sound solutions.

What is the magnet weight of the Power Tuned 9921b and why is it important?

The Power Tuned 9921b features an impressive magnet weight of 1500 Oz. A heavier magnet weight contributes to increasing the force at the voice coil, which improves sound conversion efficiency. This is particularly relevant when reproducing low frequencies, where a stronger magnetic force is needed to generate the required acoustic pressure. A heavier magnet weight can also help increase the speaker's load capacity and minimize distortion even at maximum power input, making the 9921b an ideal Subwoofer for demanding audio systems.

What materials are used for the enclosure of the Power Tuned 9921b?

The enclosure of the Power Tuned 9921b is made from a robust aluminum die-cast material. This choice of material offers several advantages: aluminum is not only extremely durable and resistant to high temperatures and mechanical stresses, but it also provides the Subwoofer with significant stability, which is crucial for minimizing enclosure vibrations. This enables clearer and cleaner bass reproduction. Additionally, the die-cast construction contributes to structural integrity, which in turn preserves the sound precision of the Subwoofer over time, regardless of operating conditions.

What are the dimensions of the Power Tuned 9921b and how do they fit in a vehicle?

The Power Tuned 9921b is a 21-inch Subwoofer, which corresponds to a diameter of 53 cm. This size is considerable and requires ample space for installation in a vehicle. If you plan to install the Subwoofer in a car, it is important to ensure that there is enough room for enclosure integration and ventilation to avoid overheating. Although specific vehicle models are not mentioned, the Subwoofer is more suitable for larger vehicles like SUVs or vans. A suitable placement area would be the trunk or a specially designed bass box.

What makes the ferrite magnet system of the Power Tuned 9921b special?

The patented ferrite magnet system of the Power Tuned 9921b is special because it offers higher efficiency in energy conversion, optimizing sound quality even at high volumes. Ferrite magnets are known for their stability and ability to ensure high performance even under intense use. This feature makes the Subwoofer ideal for users who expect consistently high-quality bass without loss of performance. The ferrite magnet system also allows for finer tuning of sound waves, achieving precise and powerful bass reproduction across the entire frequency range. This is particularly advantageous for dynamic music pieces.

What advantages does the 4" voice coil diameter of the Power Tuned 9921b offer?

The 4-inch (101.6 mm) voice coil diameter of the Power Tuned 9921b has several advantages. A larger voice coil diameter allows for more windings and a larger wire diameter, improving heat dissipation and increasing the lifespan of the coil. This feature is particularly important when the Subwoofer is operated at high power for extended periods. A larger diameter also contributes to overall performance, as more energy can be converted into acoustic power. This is crucial for achieving the high power levels for which this Subwoofer is known and contributes to a powerful and clear sound profile.

Manufacturer information/responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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