3. Ultimax II UMII18-22

Ultimax II UMII18-22

2 reviews

1200 Watt

Ultimax II UMII18-22

2 reviews

Technical Highlights

  • 1200 watts of power, 2+2 ohm impedance, 76 mm voice coil.
  • Resonant frequency at 22 Hz, sensitivity 90.7 dB, frequency up to 500 Hz.
  • Total excursion over 50.8 mm, BL 19.2 Tm, cone area 1184 cm².
  • More technical details
€449.00
€449.00 €449.00
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ProductUltimax II UMII18-22

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Dayton Audio-Ultimax II UMII18-22-18" (46cm) Subwoofer-masori-kaufen
€449.00
€449.00 €449.00

More power than Ultimax II UMII18-22 here!

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Compatible with Ultimax II UMII18-22

The Dayton Audio Ultimax II UMII18-22 is an 18 inch (46 cm) Subwoofer with dual voice coils 2 + 2 Ohm. The 76 mm voice coil, a diaphragm made of Nomex honeycomb composite with fiberglass reinforcement, and an aluminum basket form the foundation. A large rubber surround and dual 203 mm spiders allow for a total excursion of over 50.8 mm with an Xmax of 28 mm. The specifications include a sensitivity of 90.7 dB (2.83 V/1 m), a resonance frequency of 22 Hz, and a frequency response of 20–500 Hz. Other parameters are a BL of 19.2 Tm, Sd of 1184 cm², Vd of 3315 cm³, and a Vas of 248.2 liters. The dimensions include an outer diameter of 470 mm, a cutout diameter of 426 mm, and a total depth of 258 mm; mounting is done via 8 holes with a diameter of 6.5 mm.

Features
  • 18 inch (46 cm) Subwoofer
  • Diaphragm made of Nomex honeycomb composite, fiberglass reinforced
  • Large rubber surround
  • Dual 203 mm spiders
  • Two 2-Ohm copper voice coils, dual-layer (DVC 2 + 2 Ohm)
  • Voice coil diameter 76 mm
  • Aluminum basket
  • Total excursion of the diaphragm over 50.8 mm
Technical Specifications
  • Series: Ultimax II DVC
  • Type: Subwoofer
  • Nominal diameter: 18 inch
  • Power handling (QMW): 1,200 Watts
  • Impedance: 2 + 2 Ohm
  • Sensitivity (2.83 V/1 m): 90.7 dB
  • Frequency response: 20–500 Hz
  • Voice coil diameter: 76 mm
  • DC resistance (Re): 4.2 Ohm
  • Voice coil inductance (Le): 1.15 mH
  • Resonance frequency (Fs): 22 Hz
  • Qms: 2.53
  • Qes: 0.67
  • Qts: 0.53
  • Moving mass (Mms): 420 g
  • Diaphragm area (Sd): 1184 cm²
  • Displacement volume (Vd): 3315 cm³
  • Force factor (BL): 19.2 Tm
  • Equivalent volume (Vas): 248.2 liters
  • Maximum excursion (Xmax): 28 mm
  • Basket/frame material: Aluminum
  • Outer diameter: 470 mm
  • Total depth: 258 mm
  • Cutout diameter: 426 mm
  • Mounting holes: 8
  • Diameter of mounting hole: 6.5 mm

Immediately available 18" (46cm) Subwoofer

    Frequently Asked Questions about Ultimax II UMII18-22

    How does the dual voice coil affect the performance of the Dayton Audio Ultimax II UMII18-22 Subwoofer?

    The dual voice coil of the Dayton Audio Ultimax II UMII18-22, which operates at 2 + 2 Ohm, offers flexibility in impedance matching, as it can be wired in parallel or series. This design allows the subwoofer to be adapted to various amplifier configurations to maximize efficiency. The voice coil diameter of 76 mm ensures significant thermal capacity, which is beneficial at a power handling of 1,200 watts. Additionally, the inductance of 1.15 mH reduces the impact of current delays and improves sound fidelity. Such a design leads to detailed sound reproduction under high loads.

    What role does the Nomex honeycomb composite diaphragm play in the Dayton Audio Ultimax II UMII18-22?

    The diaphragm of the Dayton Audio Ultimax II UMII18-22 is made from a Nomex honeycomb composite material reinforced with fiberglass. This combination provides exceptional stiffness while remaining lightweight, enhancing the efficiency of the subwoofer. Especially at high volumes, the diaphragm ensures that the sound remains precise without unwanted distortion. The large area of 1184 cm², combined with a displacement volume of 3315 cm³, allows for deep and powerful bass that optimally covers the frequency range from 20 to 500 Hz. This design ensures high fidelity and durability.

    Why is the aluminum basket of the Dayton Audio Ultimax II UMII18-22 advantageous?

    The aluminum basket of the Dayton Audio Ultimax II UMII18-22 guarantees stability and effectively cools the assembly. Aluminum is known for its lightness and strength, allowing for precise positioning of the voice coil. Additionally, the material promotes heat dissipation, which is crucial at the high power handling of 1,200 watts of the subwoofer to avoid overheating. The precision of the basket also ensures distortion-free sound. The basket-based design leads to improved performance under extreme operating conditions by maintaining the structural integrity of the subwoofer.

    What does the frequency response of the Dayton Audio Ultimax II UMII18-22 look like?

    The frequency response of the Dayton Audio Ultimax II UMII18-22 ranges from 20 to 500 Hz, allowing for a wide bass reproduction palette. The low resonance frequency of 22 Hz ensures that even the deepest tones are reproduced powerfully. With a sensitivity of 90.7 dB (2.83 V/1 m), the Subwoofer is equipped not only for high levels but also delivers impressive volume even at low input voltage. These parameters provide the flexibility to reproduce various music genres and audio formats clearly and without distortion, making it ideal for home theater systems.

    What are the dimensions of the Dayton Audio Ultimax II UMII18-22 for installation?

    The Dayton Audio Ultimax II UMII18-22 has an outer diameter of 470 mm and a total depth of 258 mm. The cutout diameter is 426 mm, which is helpful for precise fitting into enclosure structures. The Subwoofer uses 8 mounting holes, each with a diameter of 6.5 mm, to ensure a robust and stable installation. These specifications are crucial for ensuring an optimal fit and minimizing resonance. Those precise dimensions ensure that the Subwoofer can be easily and reliably installed in standard speaker enclosures.

    What is the maximum displacement of the Dayton Audio Ultimax II UMII18-22?

    The maximum displacement (Xmax) of the Dayton Audio Ultimax II UMII18-22 is 28 mm, allowing for significant generated bass performance. This ability to achieve large linear travel ensures that the Subwoofer reproduces deep frequencies clearly and precisely even at high volumes. The total excursion of the diaphragm, which exceeds 50.8 mm, also highlights the mobility and required control over playback at high levels. This allows the Subwoofer to reproduce even the most demanding bass passages without distortion.

    What does the BL of 19.2 Tm mean for the Dayton Audio Ultimax II UMII18-22?

    The force factor (BL) of the Dayton Audio Ultimax II UMII18-22 of 19.2 Tm represents the electromechanical driving force of the Subwoofer. A high BL value indicates a strong driving force, allowing the voice coil to be effectively controlled to manage the diaphragm's movement precisely. This significantly contributes to the overall performance and precision of the Subwoofer, ensuring a clearly defined sound reproduction even at higher volumes. This is especially essential for music with deep, intense bass lines, provided that no dynamic losses occur.

    What is the significance of the Qms, Qes, and Qts ratings for the Dayton Audio Ultimax II UMII18-22?

    The mechanical quality (Qms) of the Dayton Audio Ultimax II UMII18-22 is 2.53, while the electrical quality (Qes) is 0.67 and the total quality (Qts) is 0.53. These parameters determine the damping behavior of the unit, with Qms representing the acoustic and mechanical losses and Qes representing the electrical losses. Qts reflects the overall capability of mechanical and electrical damping. Together, these values influence resonance control as well as the efficiency and quality of bass reproduction. These precise specifications are crucial for selecting an appropriate enclosure design to achieve optimal sound depth and accuracy.

    How compatible is the Dayton Audio Ultimax II UMII18-22 with common car audio systems?

    The compatibility of the Dayton Audio Ultimax II UMII18-22 with car audio systems depends on the exact dimensions of the vehicle and the available installation area. The Subwoofer has an outer diameter of 470 mm and a total depth of 258 mm, making it ideal for larger cars or vehicles with custom-made enclosure boxes. For installation, a cutout diameter of 426 mm and installation with eight mounting holes is required. These precise measurements are crucial to ensure the optimal integration of the Subwoofer without resonance issues or space deficiencies.

    What is the resonance frequency of the Dayton Audio Ultimax II UMII18-22 and why is it important?

    The resonance frequency of the Dayton Audio Ultimax II UMII18-22 is 22 Hz. This is an important value because the resonance frequency indicates how low a Subwoofer can play. A lower resonance frequency suggests higher performance at extremely low bass. When used in an appropriate enclosure, this low frequency can make the difference between a booming, imprecise sound and a tight, clear bass. Especially in home theater systems or demanding music playback, a low resonance frequency is essential for an enjoyable depth experience.

    Manufacturer information/responsible person

    Audio Components BV
    Koen Pronk, Martijn Ouwerkerk
    Peizerweg 97a
    9727AJ Groningen
    Netherlands


    Contact: info@audio-components.com

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