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Ultimax II UMII10-22
Technical Highlights
- RMS power 500 Watts, impedance 2+2 Ω, peak power 1,000 Watts.
- Frequency response 25–500 Hz, resonant frequency 39 Hz, excursion 20 mm.
- DC resistance 4 Ω, voice coil 63.5 mm, sensitivity 87.2 dB.
- More technical details
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Ultimax II UMII10-22 by Dayton Audio Description
The Ultimax II UMII10-22 from Dayton Audio is a 10-inch (25 cm) Subwoofer with dual 2 Ohm voice coils. The construction features a thick, one-piece Nomex honeycomb cone with woven, durable fiberglass and an aluminum basket, complemented by two linear stiffness spiders. The voice coil measures 63.5 mm and is made of dual-layer copper, with a maximum excursion of 20 mm. Technical specifications include a sensitivity of 87.2 dB, an impedance of 2+2 Ω, a DC resistance of 4 Ω, a resonance frequency of 39 Hz, and a frequency response of 25–500 Hz. The dimensions are 266 mm outer diameter, 184 mm total depth, and 236 mm cutout diameter, with 8 mounting holes of 6.5 mm each. Additional parameters include a diaphragm area of 345 cm², a displacement volume of 689 cm³, a force factor of 13.4 Tm, and an equivalent volume of 21.2 liters.
- 10-inch (25 cm) Subwoofer
- Thick, one-piece Nomex honeycomb cone with woven, durable fiberglass
- Two linear stiffness spiders
- Two 2 Ohm voice coils made of dual-layer copper, 63.5 mm diameter
- Aluminum basket/frame
- Optimized for sealed and vented enclosures
- Impedance 2+2 Ohm
- RMS power 500 Watts
- Peak power 1,000 Watts
- Maximum excursion 20 mm
- Woofer Series: Ultimax II DVC
- Woofer Type: Subwoofer
- Nominal Diameter: 254 mm
- Power Handling (QMW): 600 Watts
- Sensitivity (SPL at 1 m/2.83 V): 87.2 dB
- Frequency Response: 25–500 Hz
- Voice Coil Diameter: 63.5 mm
- DC Resistance (Re): 4 Ω
- Voice Coil Inductance (Le): 0.74 mH
- Resonance Frequency (Fs): 39 Hz
- Mechanical Q (Qms): 2.67
- Electrical Q (Qes): 0.73
- Total Q (Qts): 0.57
- Moving Mass (Mms): 134 g
- Suspension Compliance (Cms): 0.126 mm/N
- Diaphragm Area (Sd): 345 cm²
- Displacement Volume (Vd): 689 cm³
- Force Factor (BL): 13.4 Tm
- Equivalent Volume (Vas): 21.2 liters
- Basket/Frame Material: Aluminum
- Outer Diameter: 266 mm
- Total Depth: 184 mm
- Cutout Diameter: 236 mm
- Mounting Holes: 8
- Mounting Hole Diameter: 6.5 mm
10" (25cm) Subwoofer available now

