Guangzhou Dolsi Audio Equipment Co. Ltd
www.dolsiaudio.com
Product BrochureVersion 2022
About
www.dolsiaudio.com
A factory focusing in quality amplifier development
and production for over 15 years.
Our Main Products& Applications
Professional power amplifiers & audio peripherals
Stage vocal concert, theater,public party
Cinema, KTV room or Karaoke entertainment
Road show, tour show
Stadium, sports gaim
Meeting room, conference
Multi-funtion hall, banquet hall
Indoor or outdoor events
Club, bar, pub public house
Home theater, family party
Certificates & Technology Patent
Patent
Factory Review
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Working Process
QC Standard Establishment
Quality Control
Material & Parts Picking
Circuit Welding
Plug-in Production
Complete device assembly
Complete device Testing
Ground testing
High voltage testing
Burn-in testing
Vibration testing
AP testing
Sound testing
Top cover assembley
Module assembly
Module testing
Complete product packing
Finished product
Storage
Parts & Material Supplier Inspection
100% Inspectionon products
Shipment
1
2
3
4
5
6
7
8
9
Material Incoming Quality Control
Module & half-finished product QC
Incoming
Quality
Control
Finished
Product
Quality
Control
Ground
testing
High
voltage
testing
Burn-in
testing
AP
testing
Sound
testing
Vibration
testing
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DOLSI AUDIO attended audio & light professional shows all over the world
since 2014 and our products well known by many overseas buyers.
At Show
Contents
Company Profile
Conten Index
EX 2 Ch. Digital-Analog Combined Amplifier
EX 4 Ch. Digital-Analog Combined Amplifier
EXD Series Digital Power Amplifier
AT Series 2 Channel PFC Digital Amplifier
AT Series 4 Channel PFC Digital Amplifier
TSP Series Digital Amplifier With PFC & DSP
M Series 2-4 Channel Digital Amplifier
M Series 6-8 Channel Digital Amplifier
DSP4800 Digital Amplifier With DSP
X3600-4800V Constant Voltage Amplifier
GT Series Analog Class H Power Amplifier
XTS Series Analog Class H Power Amplifier
HP Series SMPS Class TD Power Amplifier
KT480 FIR Speaker Management System
02-06
07
08-11
12-13
14-17
18--21
22-25
26-29
30-33
34-35
36-37
38-39
40-43
44-45
46-47
48-49
Page No.
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High Stability 2 channel
Digital-analog Combined Amplifier
EX SERIES
> Outstanding working stability
> Natural & genuine sound effect
Product Features
EX Series are high stability digital-analog combined amplifier with both analog and digital features. There is a combination of Class D amplification circuit and toroidal transformer power supply in the amplifier, which help to get higher stability and better sound effect. Temperature single chip microcomputer is used to avoid the risk from heat. With the advanced and sophisticated circuit protection design, it can help to avoid short circuit, open circuit, DC shock, wrong matching, overheat of machine and overload of high frequency signal, which will cause no damage of internal components in the system.
> A new type of digital-analog combined power Amplifier.
> Both 2 channel and 4 channel models are available.
> Transparent, natural and genuine sound effect.
> High stability and long lasting working life.
> Carefully-selected high quality components. 100% quality inspection
from material to finished product, which make high stability and long last working life of the amplifiers.
> Full automatic protection against short circuit, over-load, over-heat,
mismatch, switch on/off and radio frequency interference.
> Light weight and compact structure,it is a good choice to use them in
wedding, KTV, bar, small roadshow, conference, etc.
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Application In Sound System
With outstanding stability of performance , EX Series amplifiers can be used in a variety of application including in wedding or other event, KTV, bar, concert, small roadshow, conference
Vocal concert
KTV room
Conference
Road show
Stadium
Bar
meeting room
Wedding event
High Stability 2 channel
Digital-analog Combined Amplifier
EX SERIES
Specifications
EX 2 channel 3 U model
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Product Features
EX Series are high stability digital-analog combined amplifier with both analog and digital features. There is a combination of Class D amplification circuit and toroidal transformer power supply in the amplifier, which help to get higher stability and better sound effect. Temperature single chip microcomputer is used to avoid the risk from heat. With the advanced and sophisticated circuit protection design, it can help to avoid short circuit, open circuit, DC shock, wrong matching, overheat of machine and overload of high frequency signal, which will cause no damage of internal components in the system.
> A new type of digital-analog combined power Amplifier. > Both 2 channel and 4 channel models are available. > Transparent, natural and genuine sound effect.> High stability and long lasting working life. > Carefully-selected high quality components. 100% quality inspection from material to finished product, which make high stability and long last working life of the amplifiers. > Full automatic protection against short circuit, over-load, over-heat, mismatch, switch on/off and radio frequency interference. > Light weight and compact structure,it is a good choice to use them in wedding, KTV, bar, small roadshow, conference, etc.
High Stability 4 channel
Digital-analog Combined Amplifier
EX SERIES
Specifications
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High Stability Class D 2 & 4 Channel
Digital Power Amplifier
EXD SERIES
> Outstanding working stability
> Very good sound effect
> Powerful output power
> Both 2 & 4 channel models available
More panel design for your choice
> Class D digital power amplifier in 2 U height 88 mm.
> Light weight , easy to carry and install,.
> Transparent sound, sufficient energy, delicate medium and high frequency, strong and elastic low frequency.
> Built-in single chip micro-computer, which can control the working temperature of power amplifier.
> Very good stability and long-lasting working life.
> Both 2 channel and 4 channel models are available. > Can be used in a variety of application including in wedding or other event, KTV, bar, concert, small roadshow, conference
Product Features
> High stability of working performance
> Good sound effect low distortion rate
EXD Series are high stability digital amplifier with the
following features.
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Application In Sound System
With outstanding stability of performance , EXD Series amplifiers can be used in a variety of application including in wedding or other event, KTV, bar, concert, small roadshow, conference
Vocal concert
KTV room
Conference
Road show
Stadium
Bar
meeting room
Wedding event
High Stability Class D 2 & 4 Channel
Digital Power Amplifier
EXD SERIES
Specifications
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AT SERIES
Class D 1U 2 Channel
Digital Amplifier With PFC
Universal Voltage 90-265V
PFC built-in. No worry about
unstable electric power voltage.
DOLSI AT Series , a new milestone in amplifier development. 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.
> PFC built-in to get universal operating voltage 90-265VAC for
the amplifier. No worry about unstable power voltage.
> Compact structure in only 1U height and light weight, easy to move and install.> Fixed switch frequency Class-D PCB module.> Soft resonant switching power supply LLC module.> High efficiency loud speaker EMF absorption system.> Unique peak clipping limiter and ripple Elimination.> Low electricity consumption.
> Nice cooling system with quality fans to make wind flow
from the 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 .
> Good for applications that need strong power output.
Produce Features
Product Features
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Specifications 2x350W to 2x800W
AT SERIES
Class D 1U 2 Channel
Digital Amplifier With PFC
Universal Voltage 90-265V
Specifications 2x1100W to 2x2800W
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PFC built-in. No worry about
unstable electric power voltage.
AT SERIES
Class D 1U 4 Channel
Digital Amplifier With PFC
Universal Voltage 90-265V
Product Features
AT Series 4 ch., a new milestone in amplifier development. 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.
> PFC built-in to get universal operating voltage 90-265VAC for
the amplifier. No worry about unstable power voltage.
> Compact structure in only 1U height and light weight, easy to move and install.> Fixed switch frequency Class-D PCB module.> Soft resonant switching power supply LLC module.> High efficiency loud speaker EMF absorption system.> Unique peak clipping limiter and ripple Elimination.> Low electricity consumption.
> Nice cooling system with quality fans to make wind flow
from the 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 .
> Good for applications that need strong power output.
Application In Sound System
With outstanding stability, small size and light weight , AT Series amplifiers can be used in a variety of application including in indoor or outdoor events, cinema, bar, concert, small roadshow, conference.
Conference
Road show
Stadium
Bar
meeting room
Wedding event
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Vocal concert
Cinema
AT SERIES
Class D 1U 4 Channel
Digital Amplifier With PFC
Universal Voltage 90-265V
Specifications
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Both 2 & 4 channel models are available!
2 channel
4 channel
Class D 1 U
Digital Amplifier with PFC & DSP
2 & 4 Channel
TSP SERIES
Product Features
TSP series amplifier adopts advanced Class-D PCB module and high efficient R-SMPS power module, built-in DSP. Completely controlled by digital mode, it is equipped with a USB to PC communication port, which can provide powerful power in a small space in 1 U height and 13 "depth.
> Built-in quality DSP that can accurately do routing, gain, phase, mute, parameter equalizing, delay, frequency division,
compression and signal limit.
> Built-in with PFC, universal operating voltage 90-264VAC. No
worry about unstable power voltage.
> Very light weight, easy to move and install.
> Soft resonant switching power supply LLC module.
> Unique peak clipping limiter and ripple Elimination.
> Nice cooling system. Wind flows from front to 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.
> Nice cooling system. Wind flows from front to rear.
> Good choice for applications that need high power output.
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Specifications of TSP 2 Channel Models
Class D 1 U
Digital Amplifier with PFC & DSP
2 & 4 Channel
TSP SERIES
Specifications of TSP 4 Channel Models
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Both 2 & 4 channel models are available!
2 channel
4 channel
Class D 1 U 2&4 Channel
M SERIES
Digital Power Amplifier
Product Features
M series 2 and 4 channel amplifier adopts Class-D PCB module and high efficient SMPS power module. It is built with
well selected quality components and parts.
> Powerful output in small and compact shell space.> Compact structure of Class D PCB, SMPS Power supply module.> 1 unit rack size and light weight, easy to move and install. > Class D Toplogy integrated with switch power supply design.> High efficiency and Low electricity consumption.> Nice cooling system. Wind flows from front to rear.> Fully automatic protections against short circuit ,over-load,
overheat, direct current, RF, on/off switching, muting, and
amplitude limit.>Stereo ,bridge and mono mode selection switch are set on
back panel.
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Class D 1 U 2&4 Channel
M SERIES
Digital Power Amplifier
Specifications
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Product Features
M series 6 and 8 channel amplifier adopts Class-D PCB module
and high efficient SMPS power module. It is built with
well selected quality components and parts.
> Powerful output in small and compact shell space.> Compact structure of Class D PCB, SMPS Power supply module.> Compact 2 U rack in light weight, easy to move and install. > Class D Toplogy integrated with switch power supply design.> High efficiency and Low electricity consumption.> Nice cooling system. Wind flows from front to rear.> Fully automatic protections against short circuit ,over-load,
overheat, direct current, RF, on/off switching, muting, and
amplitude limit.>Stereo ,bridge and mono mode selection switch are set on
back panel.
Class D 2 U 6&8 Channel
M SERIES
Digital Power Amplifier
Specifications
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Class D 1 U 4 channel
Digital Amplifier With DSP
DSP4800
Product Features
DSP4800 amplifier adopts Class-D PCB module and ALLDSP module. It is built with well selected quality components and parts.
>Quality DSP module built-in, with display screen in front panel. .> Compact structure of Class D PCB, SMPS Power supply module.> 1 unit rack size and light weight, easy to move and install. > Class D Toplogy integrated with switch power supply design.> High efficiency and Low electricity consumption.> Nice cooling system. Wind flows from front to rear.> Fully automatic protections against short circuit ,over-load,
overheat, direct current, RF, on/off switching, muting, and
amplitude limit.>Stereo ,bridge and mono mode selection switch are set on
back panel.
Specifications
2 channel
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Product Features
X3600V and X4800V amplifier adopts unique circuit design integrated constant voltage(70-100V) & constant resistance (4 ohm above) ,X3600V and X4800V are created as dual-purpose class D digital power amplifiers. They can be used for the applications in both public addressing system and commercial audio system.
> There are four types of wiring mode selection. Stereo mode,
bridge mode and mono mode are used for commercial audio
purpose. 100V mode is used for public addressing purpose.> Compact 1 U rack in light weight, easy to move and install. > Class D Toplogy integrated with switch power supply design.> High efficiency and Low electricity consumption.> Nice cooling system. Wind flows from front to rear.> Fully automatic protections against short circuit ,over-load,
overheat, direct current, RF, on/off switching, muting, and
amplitude limit.>Stereo ,bridge and mono mode selection switch are set on
back panel.
Class D 1 U
Constant Voltage & Constant Resistance Amplifier
2 & 4 channel
X3600V X4800V
4 channel rear
Specifications
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Class D 1 U 2 Channel
High Stability Analog Amplifier
GT SERIES
Product Features
GT Series are the amplifiers with efficient and stable Class-H circuit optimized by DOLSI team.The harmonic distortion, inter-modulation distortion and transient inter-modulation distortion all decrease to the lowest level by adding an efficient function of signal conversion, which brings a perfect amplification to the sound. Integrated component layout, strong and compact structure, well-crafted workmanship. All these enable outstanding performance in a variety of application including small meeting room, KTV room or large stadium,vocal concert, etc. The main features are as the following:
> Nice workmanship & good construction of board & whole system.
> Small size, light weight but high efficiency and high quality sound.> Well-selected high quality components. 100% quality inspection from material to finished product.> Full protection against short circuit, over-load, over-heat, mismatch, switch on/off and radio frequency interference.> Air force cooling system and automatic speed fan to ensure long-lasting work stability.> Ground-lift technology.> Carefully tested by professional AP testing machine to ensure the consistency and reliability.
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Application In Sound System
With outstanding stability and high performance cost ratio,
GT Series amplifiers can be used in a variety of application including meeting room, KTV room , stadium, vocal concert or bar, etc
Vocal concert
KTV room
Stadium
Bar
Meeting room
Class D 1 U 2 Channel
High Stability Analog Amplifier
GT SERIES
Specifications
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Product Features
XTS Series are the amplifiers are the amplifiers with TFT display screen showing temperature, working mode, signal status and sensitivity. IT is Class-H circuit optimized by DOLSI team.The harmonic distortion, inter-modulation distortion and transient inter-modulation distortion all decrease to the lowest level by adding an efficient function of signal conversion, which brings a perfect amplification to the sound. Integrated component layout, strong and compact structure, well-crafted workmanship. All these enable outstanding performance in a variety of application including small meeting room, KTV room or large stadium,vocal concert, etc. The main features are as the following:
> Nice workmanship & good construction of board & whole system.
> Small size, light weight but high efficiency and high quality sound.> Well-selected high quality components. 100% quality inspection from material to finished product.> Full protection against short circuit, over-load, over-heat, mismatch, switch on/off and radio frequency interference.> Air force cooling system and automatic speed fan to ensure long-lasting work stability.> Ground-lift technology.> Carefully tested by professional AP testing machine to ensure the consistency and reliability.
Class D 1 U 2 channel
High Stability Analog Amplifier W/ Display
XTS SERIES
Specifications
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Product Features
HP Series are the amplifiers with efficient and stable Class-TD circuit. These are SMPS power amplifiers optimized by DOLSI team.The main features are as the following:
. Very strong output power & stable working performance.
. Stable switching mode power supply
. Compact structure of circuit and component assembly.
. Small size and light weight, easy to move and install.
. Well selected quality components and parts, even a piece of power supply cord.
. Combination of high efficiency similar as Class TD circuit and genuine, pure and bright sound effect of traditional Class B.
.Pure copper radiator. Nice cooling system with 4 fans, front-rear airflow, temperature controlled speed.
. Fully automatic protection against short circuit ,over-load, over-heat, direct current, radio-interference , on/off switching,
muting ,power supply under-voltage, over-voltage and power failure.
. Strong output power. A piece of HP20000 can even drive four pieces of 21" sub-woofer box !
. Good choice for any high power output needed applications, large space outdoor events, stage performance , stadium, etc...
Class TD 2 U
High Stabiltiy SMPS Amplifier
2 channel & 4 channel
HP SERIES
Specifications
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High Stability
Speaker Management System
With FIR Built-inKT480
Product Features
> A new type of digital speaker management system with FIR built-in.
> 4 in and 8 out style.
> USB network or Ethernet connector in front panel.
> Much higher working stability than other type of
processor.
> Well selected high quality parts and materials.
> Good workmanship
FIR built-in high quality DSP module.
Specifications
Address: No.22 Street 1, Daban Industrial Zone, Tinggen Village, Shatou, Panyu District, Guangzhou, China
Tel: +86 20 36751499
Guangzhou Dolsi Audio Equipment Co. Ltd
Website: www.dolsiaudio.com
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