Products
1 U Class-D Digital Power Amplifier
    Publish time 2019-11-26 17:12    

2 Channel PFC Universal Power Supply Class-D 1U Digital Power Amplifier 

 

. Powerful 2x350W to 2x2400W at 8 ohm.

. Compact 1U rack space.

. PFC (Power Factor Correction) built-in, works at universal power voltage

  range ~90-264V. No worry about unstable power supply.

. Smaller size and light weight. Easy to carry and install.

. Stable at 2 ohm. 

. Good choice for applications for outdoor live show, music event, tour

  performance, bar, multi-funtional hall, church,public sports,  

  or any other suitable place. 

   


 SPECIFICATIONS  

Model No. AT350 AT500 AT650 AT800 AT900 AT1100 AT1400 AT1800 AT2400
Channel number 2 channel 2 channel 2 channel 2 channel 2 channel 2 channel 2 channel 2 channel 2 channel
Rated output power  8 ohm 350Wx2  500Wx2 650Wx2 800Wx2  900Wx2  1100Wx2 1400Wx2  1800Wx2 2400Wx2
Rated output power 4 ohm 580Wx2 800Wx2 1050Wx2 1300Wx2 1400Wx2 1800Wx2 2300Wx2 2800Wx2 3800Wx2
Rated output power 2 ohm 1100Wx2 1100Wx2 1250Wx2 1500Wx2 1750Wx2 2000Wx2 2600Wx2 3600Wx2 5000Wx2
Bridged output power 8 ohm 1160W 1600W 2100W 2600W 2800W 3600W 4600W 5500W 7600W
Bridged output power 4 ohm 1600W 2200W 2800W 3500W 3500W 4000W 5200W 7200W 10000W 
Circuit Category CLASS D CLASS D CLASS D CLASS D CLASS D CLASS D CLASS D CLASS D CLASS D
Voltage Gain 40.8/38.6/32 40.8/38.6/32 41.2/39/32 42.7/40.5/32 40.8/38.6/32 41.2/39/32 42.7/40.5/32
THD (total harmony distortion) ≤0.035% (@ 8ohm,1kHz,1/8 rated power) ≤0.05%    
IMD(intermodulation distort.) ≤0.15% (@ 8 ohm,1kHz,1/8 rated power)
S/N Ratio (20Hz-20Khz,4 Ohms) >106dB A
Cross-talk (1kHZ, 4 Ohms) >40dB
Frequency response 10Hz to 20k Hz,+/-1dB
Input impedance balanced 20K/ non-balanced 10K
Damping factor (10-400Hz,8Ohms) ≥600
Slew Rate ≥20v/uS
Input sensitivity 0.775V,0dB
Protection funtion short circuit, direct current, over-load and  amplitude limit.
Control knobs   power ON/OFF switch,VOLUME control in front panel . STEREO/BRIDGE/MONO   switch in rear panel .
LED indicators CLIP/-10dB/SIGNAL/MONO/BRIDGE/STATUS indicators in front panel
Power delay 4 seconds
Input interface XLR  input socket
Output interface SPEAKON connector
Size (WxHxD) 483x44x230mm
Net weight  5.5kg 5.5kg 5.8kg 5.9kg 6.1kg 6.3kg 6.6kg 7.2kg 8.8KG
 

 

.  Nice cooling system with quality fans to make wind flow  front to the rear.
.   Accurate volume control, switch on/off, signal, clip and protection LED light  in front panel.
.   Fully automatic protections against  direct current protection, over heat, over load, on/off switching,  
    RF and amplitude limit. 
.   XLR balance input and professional SPEAKON output connectors.
.   Stereo ,bridge and mono mode selection pull switch is set on back panel.
.   Good choice to applications in high power output in live show, outdoor event, stadium,
     and flow performance. 

 

 

PRODUCT FEATURES

 

DOLSI  AT Series are digital power amplifier with Class D circuit category,  a new milestone in amplfier development.  PFC ( Power Factor Correction) technology  is used in AT series . So the amplifiers can work well  in power supply range ~90-260V. Advanced Class D PCB module and SMPS power supply module  are used to obtain high efficiency and stability.  It has very high power density, which makes the amplifier to reach powerful output in a very small shell space. 

 

.  Unique and elegant enclosure design .
.  Compact structure with only 1U height and 9" depth and light weight, easy to move and install.
.  Fixed switch frequency Class-D  PCB module.
.  Soft resonant switching power supply LLC  module.
.  Active power factor correction technique (PFC), can work with high stability under full          
   voltage range 90-264V .
.  High efficiency loudspeaker EMF absorption system.
.  Unique peak clipping limiter and ripple Elimination.
.  Low electricity consumption.
.  Nice cooling system with quality fans to make wind flow  front to the rear.
.   Accurate volume control, switch on/off, signal, clip and protection LED light  in front panel.
.   Fully automatic protections against  direct current protection, over heat, over load, on/off switching,       RF and amplitude limit. 
.   XLR balance input and professional SPEAKON output connectors.
.   Stereo ,bridge and mono mode selection pull switch is set on back panel.
.   Good choice to applications in high power output in live show, outdoor event, stadium,
     and flow performance. 
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