Seller
Seller
083 XXXXXXXX
Show phone number
Manufacturer’s specs
Frequency Response / 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: 20-150 watts.
Speaker Specs:
- Bookshelf Loudspeaker
- Real black oak veneer and piano gloss black finish options
- Dual gold-plated 5-way binding posts
- 1.7” wide-flared rear-firing port
- Cloth grille with pin/cup retention system
- Elastomer stick-on bumper feet (adds 3mm to height)
- Overall Dimensions: 381 mm (H) x 215 mm W x 276.8 mm(D) (with grille)
- Weight: 8.6 kg
Driver Specs:
1” Aluminum Dome Tweeter:
- FEA-optimized diffuser for airy and unveiled presentation
- Aluminum dome delivers exceptional transient response and exceptional stiffness/mass ratio
6.5” Woofers:
- Composite glass-fiber cone with excellent stiffness/mass ratio for high sensitivity and pistonic behavior beyond pass band.
- Aluminum shorting rings to reduce gap inductance and lower distortion
- Long stroke motor and suspension for high output
- Vented voice coil formers to minimize air compression artifacts at high drive levels
Crossover & Cabinet Specs:
Crossover:
- 2-way crossover with premium-grade capacitors, air-core inductors and heavy-trace printed circuit boards
- Crossover frequency and slopes optimized for excellent off-axis polar response, outstanding phase coherency, and total radiated sound power
- Tweeter-to-woofer crossover: 2 kHz
Cabinet:
- 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
- FEA-optimized bracing reduces cabinet resonances
Review
The Ultra Bookshelf proved to be a very fun speaker to review, as it hit all the right notes. Its priorities were definitely coherence and seamlessness in a good-looking package. The Ultras were, as noted, amplifier friendly and unfussy to set up. The Ultras have a big sound not often found in stand mount designs. Before spending a bunch more, I highly suggest checking out SVS — you might just find that far more expensive brands offer little, or nothing, more. Highly Recommended.
20-150
150
1
Two-way
8
381
215
276.8
8.7
Vented (ported)
2