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

2 SPECIFICATIONS 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 8homs 38dB Output Circuitry CLASS D Distortion Less than 0.02% Frequency Response 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) SHIPPING SIZE ( WxDxH mm) 504x560x95 565x560x95

3 LA range- LIGHT WEIGHT AMPLIFER LA amplifier is a flagship series from LEX engineer. With the view to save the cost for users, we adopt different amplifications on amplifiers with different powers. For small model, we have CLASS AB to save the cost, while for mid power model, we have CLASS HII and for big power model, CLASS H III. The special design of dual power supply on big power model in LA makes the bass stay full and powerful while the high end remains crisp and clean. FEATURES High efficiency switching mode power supply design reduce the amplifier weight Selectable input sensitivity in voltage 0.775V rms, 1.0V rms and 1.4V rms Switch for sub sonic filter 30Hz and below Switch for Earth link (on and off) Comprehensives Signal (SIG), CLIP (CLIP), Protect (PRO) and PAR/BRG (Parallel/Bridged) indicators to monitor amplifier working status. All signal inputs and outputs are on XLR male & female (2x XLR male & 2x XLR female) Binding post and Speakon outputs WEBSITE TEL

4 SPECIFICATIONS STEREO MODE LA25 LA35 LA60 LA80 LA10 LA15 8ohms (RMS/THD 1%) 250Wx2 350Wx2 600Wx2 800Wx2 1100Wx2 1500Wx2 4ohms (RMS/THD 1%) 350Wx2 500Wx2 1000Wx2 1500Wx2 1700Wx2 2500Wx2 2ohms 500Wx2 700Wx2 1200Wx2 1600Wx2 1800Wx2 2200Wx2 BRIDGE MONO MODE 8ohms 650w 1000w 1800w 2800w 3500W 4000W 4ohms n/a n/a n/a n/a n/a n/a Signal to Noise >95dB Input Sensitivity 0.775Vrms/1.0Vrms/1.4Vrms 8homs 38dB Output Circuitry Class AB 2-Tier Class H 3-Tier Class H Distortion Less than 0.02% Frequency Response 8ohms ±0.5dB Damping Factor (@100Hz) >300 Input Impedance Balanced 20K/ Unbalanced 10K High Filter 30Hz at -3dB Cooling Variable-speed fan, rear-to-front air flow Input Connectors, each channel XLR male & female Output Connectors, each channel speakon and binding posts Rear Panel Swithches Input Configuration: Bridge/Stereo/Parallel Input sensitivity:0.755vrms,1.0vrms and 1.4Vrms Sub sonic filter: 30Hz and below Earth link: on/off Front Panel Controls Gain Attenuator: 0 to db Power On/Off Front Panel Indicators Signal (SIG), CLIP (CLIP), Protect (PRO) and PAR/BRG (Parallel/Bridged) Power STY/on 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) SHIPPING SIZE ( WxDxH mm) 560x420x x542x138

5 LT range- TRANSFORMER AMPLIFER FEATURES Selectable input sensitivity in voltage 0.775V rms, 1.0V rms and 1.4V rms Switch for sub sonic filter 30Hz and below Switch for Earth link (on and off) Comprehensives Signal (SIG), CLIP (CLIP), Protect (PRO) and PAR/BRG (Parallel/Bridged) indicators to monitor amplifier working status. All signal inputs and outputs are on XLR male & female (2x XLR male & 2x XLR female) Binding post and Speakon outputs WEBSITE TEL

6 SPECIFICATIONS STEREO MODE LT250 LT350 LT550 LT800 LT1000 LT1300 8ohms (RMS/THD 1%) 250Wx2 350Wx2 550Wx2 800Wx2 1000Wx2 1300Wx2 4ohms (RMS/THD 1%) 350Wx2 500Wx2 1000Wx2 1500Wx2 1700Wx2 2000Wx2 2ohms 500Wx2 700Wx2 1200Wx2 1600Wx2 1800Wx2 2200Wx2 BRIDGE MONO MODE 8ohms 650w 1000w 1800w 2800w 3500W 4000W 4ohms n/a n/a n/a n/a n/a n/a Signal to Noise >95dB Input Sensitivity 0.775Vrms/1.0Vrms/1.4Vrms 8homs 38dB Output Circuitry Class AB 2-Tier Class H 3-Tier Class H Distortion Less than 0.02% Frequency Response 8ohms ±0.5dB Damping Factor (@100Hz) >300 Input Impedance Balanced 20K/ Unbalanced 10K High Filter 30Hz at -3dB Cooling Variable-speed fan, rear-to-front air flow Input Connectors, each channel XLR male & female Output Connectors, each channel speakon and binding posts Rear Panel Swithches Input Configuration: Bridge/Stereo/Parallel Input sensitivity:0.755vrms,1.0vrms and 1.4Vrms Sub sonic filter: 30Hz and below Earth link: on/off Front Panel Controls Gain Attenuator: 0 to db Power On/Off Front Panel Indicators Signal (SIG), CLIP (CLIP), Protect (PRO) and PAR/BRG (Parallel/Bridged) Power STY/on 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) SHIPPING SIZE ( WxDxH mm) 560x420x x542x x580x200 All Specification Subject to Change Without Notice.