ULTRA SPEAKER FEATURES & SPECIFICATIONS
ULTRA CENTER
Frequency Response and Electro-Acoustic Data:
• Rated bandwidth: 45 Hz-32 kHz (± 3 dB).
• Nominal impedance: 8 ohms.
• Sensitivity: 87 dB (2.83V @ 1 meter full-space, 300-3kHz).
• Recommended amplifier power: 20-225 watts
Loudspeaker Physical Description:
• Dimensions (HxWxD): 8" x 22" x 10", 20.3 x 55.9 x 25.4cm
• Weight: 31 lbs., 14.1 kgs.
• Dual gold-plated 5-way binding posts.
• Dual 1.7” rear-firing ports.
• Cloth grille with pin/cup retention system.
Driver Array and Technical Highlights:
• Vertically aligned tweeter and midrange improves horizontal axis polar response, with
reduced lobing and comb filtering.
• 1" tweeter features FEA-optimized diffuser and aluminum dome.
• 4" midrange driver and 6.5" woofer features composite glass-fiber cone, aluminum
shorting ring, cast aluminum basket and vented voice coil former.
SoundMatch Crossover Network:
• 3-way crossover with premium-grade capacitors, air-core inductors and heavy-trace
printed circuit boards.
• Midrange-to-tweeter crossover: 2 kHz.
• Midrange-to-woofer crossover: 500 Hz.
Cabinet Construction Technical Highlights:
• Precision CNC-manufactured cabinet with extensive internal blocking and bracing,
resulting in no resonances and excellent rigidity.
• Acoustically transparent and FEA optimized grilles, wedge-shaped front baffle and
flush-mounted drivers all contribute to reduced edge diffraction and improved on-axis high
frequency response.
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