The LAT-1 is a full-range, floor-standing, 3-way loudspeaker that couples accuracy with extraordinary dynamic range and superb transparency. Features include an aluminum enclosure, a high-quality, custom driver compliment and high current, Krell designed crossover networks. LAT-1 loudspeakers are the preferred choice wherever the most faithful audio reproduction is required.
FEATURES
All Krell LAT loudspeakers feature massive aluminum construction. The enclosures range from 0.75 to 1.5 inches in wall thickness. 3-way designs feature an internal midrange/tweeter sub-enclosure that is constructed of heavy aluminum plate. The shape of the enclosures is determined by custom aluminum extrusions, the curvatures of which are designed to absolutely minimize the effects of internal standing waves and external high-frequency diffraction. Such extensive use of aluminum may seem extravagant, but the sonic benefits are undeniable. Other than concrete and lead, which are not practical choices, aluminum possesses the ideal combination of structural rigidity and resonance damping characteristics. Within the audio passband, Krell LAT loudspeaker enclosures are sonically inert--something that cannot be said about any wood or wood derivative.
Separate crossover network assemblies are used for each driver complement (low, mid, and high). All circuitry is on 1/8-inch thick glass epoxy circuit boards with 4 oz. copper traces, ensuring low microphonics, low resistance, low inductance, and high current handling. 1st-order network at 300 Hz preserves transient response; 3rd-order Butterworth network at 2.9 kHz optimizes power response. Network inductors are all air-core pure copper designs, the largest of which is formed of 10-gauge wire, measuring 5 inches in diameter. Individually potted polypropylene WIMA capacitors are used in parallel to minimize inductance and resistance, and improve current handling. System impedance curve is extremely smooth, and sensitivity is a high 91 dB SPL at 1 meter with 1 W input. Custom gold-plated brass binding post terminals assure optimum signal transfer.
A 1-inch (25 mm) tweeter delivers flat response to 50 kHz. The tweeter features a central waveguide that optimizes dispersion characteristics.
The 53/4-inch (15 cm) midrange features an advanced multifaceted cone that eliminates colorations induced by resonance modes. The midrange employs a cast magnesium-aluminum frame and is video shielded. A proprietary suspension and extended voice coil assure extremely linear performance. D'Appolito midrange/tweeter configuration places the acoustic center at ear level and ensures pinpoint, accurate stereo imaging.
A custom-designed 8-inch (21 cm) woofer has extremely low free air resonance, a composite carbon fiber cone, and a butyl surround. The long excursion design (1-inch peak to peak) is optimized for vented cabinet performance. The woofer employs a cast magnesium-aluminum frame and is video shielded.