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Ultimax II UMII12-22
Technical Highlights
- Power 600 watts RMS, peak power 1,200 watts, 2x2 ohms.
- Voice coil 76 mm, copper, aluminum basket, 22 mm excursion.
- Frequency response 22–400 Hz, sensitivity 88.6 dB, Vas 53 liters.
- More technical details
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Compatible with Ultimax II UMII12-22
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Ultimax II UMII12-22 by Dayton Audio Description
The Dayton Audio Ultimax II UMII12-22 is a 12-inch (30 cm) Subwoofer with two 2-ohm voice coils. A one-piece Nomex honeycomb diaphragm with woven fiberglass reinforcement and two linear spiders form the drive unit. The voice coil with a diameter of 76 mm is made of dual-layer copper. The nominal power handling is 600 watts RMS, with a peak power of 1,200 watts. The maximum linear excursion is 22 mm. The basket is made of aluminum. The outer diameter is 321 mm, the total depth is 202 mm, and the cutout diameter is 285 mm. The frequency response is specified at 22–400 Hz, with a sensitivity of 88.6 dB (1 m/2.83 V).
- 12-inch (30 cm) Subwoofer
- Two 2-ohm voice coils made of dual-layer copper
- One-piece Nomex honeycomb diaphragm with woven fiberglass reinforcement
- Two linear spiders
- Voice coil diameter 76 mm
- Maximum linear excursion 22 mm
- RMS power 600 watts
- Peak power 1,200 watts
- Aluminum basket
- Outer diameter 321 mm
- Total depth 202 mm
- Cutout diameter 285 mm
- Mounting holes 8
- Diameter of mounting hole 6.4 mm
- Series: Ultimax II DVC
- Nominal diameter: 305 mm
- Impedance (Z): 2 + 2 Ω
- Sensitivity (SPL at 1 m / 2.83 V): 88.6 dB
- Frequency response: 22–400 Hz
- DC resistance (Re): 4.2 Ω
- Voice coil inductance (Le): 0.66 mH
- Resonance frequency (Fs): 31 Hz
- Mechanical quality factor (Qms): 2.75
- Electrical quality factor (Qes): 0.71
- Total quality factor (Qts): 0.56
- Moving mass (Mms): 189 g
- Suspension compliance (Cms): 0.133 mm/N
- Diaphragm area (Sd): 528 cm²
- Displacement volume (Vd): 1162 cm³
- Force factor (BL): 14.8 Tm
- Equivalent volume (Vas): 53 liters
- Power handling (QMW): 800 watts
12" (30cm) Subwoofer available now

