Product Description

Digital switching amplifier

Rock-solid, ultrastable output power set record marks in terms of flexibility, efficiency and practical use. Whole amp racks of multiple conventional power amplifiers with switching power supplies may be reduced to a mere one to three LEX Class D Digital amplifiers. Apart from these "hard" benefits, they offer many more advantages such as a strikingly audiophile sound reproduction with very precise, deep lows and a superb resolution of midrange and high frequencies.

The fact that LEX develops and builds amplifiers in top-notch quality is almost self-explanatory. The uncompromising component selection and a circuit design based on criteria of aerospace technology ensure utmost reliability.

Features:
Ø Switch-mode power supply for high performance and compact size
Ø Class D (digital) output for extremely high efficiency because of less current consumption and heat dissipation
Ø Easily handles 2-ohm loads all night long
Ø Variable speed fan for low noise
Ø Balanced XLR audio input / Speakon Speaker output
Ø Switch for mono and stereo
Ø Comprehensive front panel indicators including signal (SIG), clip (CLIP), active (ACT) and, protect (PRO)
Ø Fully protected circuit design including DC, infrasonic, high frequency, thermal overload and short circuit
Ø Clip limiter - prevents severely clipped waveforms from reaching the loudspeakers, whilst maintaining full peak power
Ø DC protection - protects against infrasonic signals
Ø VHF protection - protects the loudspeakers against strong very high frequency non-musical signals above the audible range.
Ø Thermal protection - prevents the amplifier from being overheated
Ø Compact size - only 1 U for reduced rack cost and space
Ø Light weight - only 9 kg for easier racking and shipping (bigger power model)

Specification:
STEREO MODE LD450 LD650 LD800 LD1000
8ohms (RMS/THD 1%) 450Wx2 650Wx2 900Wx2 1100Wx2
4ohms (RMS/THD 1%) 800Wx2 1200Wx2 1500Wx2 1700Wx2
2ohms (MAX) 1600Wx2 2300Wx2 2800Wx2 3400Wx2
BRIDGE MONO MODE
8ohms n/a n/a n/a n/a
4ohms n/a n/a n/a n/a
Signal to Noise >95dB
Input Sensitivity 1.1V
Gain @ 8homs 38dB
Output Circuitry CLASS D
Distortion Less than 0.02%
Frequency Response 10Hz-40KHz @ 8ohms ± 0.5dB
Damping Factor (@100Hz) >600
Input Impedance Balanced 20K/ Unbalanced 10K
Switching Rate 50V/us
High Filter n/a
Cooling Variable-speed fan, rear-to-front air flow
Input Connectors, each channel XLR male & female
Output Connectors, each channel speakon
Rear Panel Swithches mono/stereo
Front Panel Controls Gain Attenuator: 0 to ∞ DB Power On/Off
Front Panel Indicators Protect (PRO), CLIP (CLIP), Signal (SIG) and Active (Act)

Protection:
Amplifier Protection Full short circuit, thermal, infrasonic, ultrasonic, VHF, vol. Gain gradually
Load Protection DC fault power supply, switching power supply under voltage
Infrasonic -3 dB, 5 Hz
DC fault Power supply shutdown
Ultrasonic -3 dB, 85 KHz
Short Circuits active clip limiting, recover after limiting
Thermal no output at 95° C, re-work less than 95° C
Over Current auto limit

Physical:
Shipping Weight(kgs) 11.5 12.5
Shipping Size( WxDxH mm) 504x560x95 565x560x95.