Guangzhou Dolsi Audio Equipment Co. Ltd
www.dolsiaudio.com
Product Brochure
Version 2023
DOLSI Audio Equipment Co. Ltd, a factory focusing in quality amplifier production and devevlopment for over 15 years. With years of production experience in the professional audio , DOLSI Audio has grown up to be a manufacturer focusing in research, development and manufacturing of high quality audio equipment, including professional power amplifier, speaker system, and other audio peripherals. With strong R&D capability, DOLSI have obtained a number of technology invention patents. Starting from traditional analog circuit, after hard working of our senior Engineers, Dolsi developed over ten series of amplifiers covering classic analog technology, high efficiency TD electric circuit, SMPS and digital amplification and professional audio system. Co-operation with famous suppliers America ON, Japan Toshiba and SANKEN ensures our advantage of technology updating and product reliability.
DOLSI is working on custom-made, OEM and own-brand production for clients from all over the world. We understand well about the real demand to the reliable performance and stability of the audio products for various applications. DOLSI engineers configure the product function with different structure and feature based on different applications, coming out variety of product series that are widely used in theatre, stadium, outdoor events, live show, club, indoor activity, meeting room, church, bar saloon and multiple-function hall.Quality is the critical point of our business. We always stick to quality first, customer supremacy and service success. DOLSI product passed CCC, CB, CE and RoHS certification.
Believing that there is no best , only the better, DOLSI is in progress with every client feedback.
Company Profile
CERTIFICATES AND TECHNOLOGY PATENTS
CE CERTIFICATES
RoHS CERTIFICATES
CB CERTIFICATES
PATENT CERTIFICATES
HIGH TECH. CERTIFICATES
AWARDS BY PLATFORM
Quality Control
100% Inspectionon products
1
2
3
4
5
6
7
8
9
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
QC Standard Establishment
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
Shipment
Material Incoming Quality Control
OUR FACTORY REVIEW
OUR WORKING PROCESS
OUR PRODUCT APPLICATION
THOSE GOOD DAYS AT SHOW
Maybe, we met at these International
Pro. Light & Sound shows.
DOLSI AUDIO had attended audio & light professional shows all over the world since 2014. Our products are well known by many overseas buyers.
With outstanding stability of performance , DOLSI amplifiers can be used in a variety of application including in wedding or other event, KTV, bar, concert, small roadshow, conference or any suitable place.
Vocal concert
KTV room
Conference
Road show
Bar
Stadium
meeting room
Wedding event
Content Index
START PRODUCTS REVIEW FROM THE NEXT PAGE...
Front Cover
Company ProfileConten Index AT Series 2 Channel PFC Digital Amplifier AT Series 4 Channel PFC Digital Amplifier
TSP Series Digital Amplifier With PFC & DSPDSP4800 Digital Amplifier With DSPM Series 2-4-6-8 Channel Digital AmplifierSX3600V/X4800V Constant Voltage AmplifierDB Series 2U Digital Power AmplifierEXD Series 2U Digital Power AmplifierEX Series Digital-Analog Combined AmplifiersGT Series Analog Class H Power Amplifier
X Series Analog Class H Power Amplifier
XT 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
PW module amplifiers
XTM200 Meeting room amplifier .
Back Cover --------------------------------------
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AT Series power amplifier is 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.
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.
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.
> Both 2 channel and 4 channel models are available.
> PFC built-in to get universal operating voltage 90-265VAC for the amplifier.
No worry about unstable power voltage in operation.> 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 front to the rear.> Accurate volume control, switch on/off, signal, clip and protection LED light in front panel.> Multiple automatic protection against direct current, 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.
AT Series power amplifier is 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.
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.
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.
Class D Digital Amplifier with PFCUniversal Voltage 90-265V
AT SERIES
1U
ULTRA-THIN WITH 44 MM HEIGHT
UNIVERSAL VOLTAGE 90-265 VAC
PFC
HIGH STABILITY AND GOOD RELIABILITY
MULTIPLE PROTECTION
HIGH SPEED FAN
STRONG OUTPUT POWER
CH
2 & 4 CHANNEL MODELS AVAILABLE
LIGHT WEIGHT 5-10KGS
Produce Features
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AT 2 Channel 2x350W to 2x800W SPECIFICATIONS
AT 2 Channel 2x1100W to 2x2800W SPECIFICATIONS
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Class D Digital Amplifier with PFCUniversal Voltage 90-265V
AT SERIES
FINE WORKMANSHIP IN PRODUCT DETAILS
AT 4 CHANNEL SPECIFICATIONS
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TSP series amplifier adopts advanced Class-D PCB 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.>Multiple protections against direct current ,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.
TSP series amplifier adopts advanced Class-D PCB 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.>Multiple protections against direct current ,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.
1U
ULTRA-THIN WITH 44 MM HEIGHT
MULTIPLE PROTECTION
UNIVERSAL VOLTAGE 90-265 VAC
PFC
LIGHT WEIGHT 5-10KGS
HIGH SPEED FAN
STRONG OUTPUT POWER
CH
2 & 4 CHANNEL MODELS AVAILABLE
MULTIPLE POWER OPTIONS
WATT
DSP
QUALITY DSP MODULE BUILT-IN
TSP SERIES
Class D Digital Amplifier with PFC & DSP
TSP SERIES
TSP SERIES
Class D Digital Amplifier with PFC & DSP
TSP SERIES
TSP 4 CHANNEL SPECIFICATIONS
TSP 2 CHANNEL SPECIFICATIONS
DSP4800 amplifier adopts Class-D PCB module and 4 in 4 out 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.> Multiple protections against short circuit ,over-load, overheat, direct current, RF, on/of>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.> Multiple protections against short circuit ,over-load, overheat, direct current, RF, on/of
switching and muting.
TSP SERIES
Class D 4 Channel
Digital Amplifier with DSP
DSP4800
DSP4800 SPECIFICATIONS
4 IN 4 OUT FLEXIBLE DSP BUILT-IN
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
DSP
1 U
ULTR-THIN WITH 44 MM HEIGHT
MULTIPLE PROTECTIONS
M series 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.> Multiple protections against short circuit ,over-load, overheat, direct current,
RF, on/off switching, muting, and amplitude limit.> Two channel, four, six and eight channel models are all available.
Class D Digital Power Amplifier
M SERIES
MULTIPLE PROTECTION
HIGH SPEED FAN
FINE CONSTRUCTION OF CIRCUIT BOARD
CH
2, 4, 6 & 8 CHANNEL MODELS AVAILABLE
QUALITY COMPONENTS AND PARTS
Class D Digital Power Amplifier
M SERIES
M3600/M4800 SPECIFICATIONS
M6200/M800 SPECIFICATIONS
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Dual Purpose Class D 70-100V
Constant Voltage & Resistance Amplifier
X3600V/X4800V
X3600V/X4800V SPECIFICATIONS
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.> Multiple protections against short circuit ,over-load, overheat, direct current, RF, on/off switching, muting,
>4 OHM
CONSTANT VOLTAGE MODE
70-100V
CONSTANT RESTISTANCE MODE
CH
2 & 4 CHANNEL MODELS AVAILABLE
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
High Stability Class D 2 & 4 Channel 2 U Digital Power Amplifier
DB SERIES
CLASS D DIGITAL AMPLIFIER
D
HIGH EFFICIENCY AND STABILITY
CH
2 & 4 CHANNEL MODELS AVAILABLE
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
> 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.
> High stability of working performance
> Good sound effect low distortion rate
DB Series are Class D high stability digital amplifier with the following features.
DB SERIES SPECIFICATIONS
High Stability Class D 2 & 4 Channel 2 U Digital Power Amplifier
EXD SERIES
CLASS D DIGITAL AMPLIFIER
D
HIGH EFFICIENCY AND STABILITY
CH
2 & 4 CHANNEL MODELS AVAILABLE
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
> 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.
> High stability of working performance
> Good sound effect low distortion rate
EXD Series are Class D high stability digital amplifier with the following features.
EXD SERIES SPECIFICATIONS
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
CLASS D DIGITAL ANALOG COMBINED CIRCUIT TYPE
D
HIGH EFFICIENCY AND STABILITY
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
CH
2 & 4 CHANNEL MODELS AVAILABLE
EX 4 CHANNEL SPECIFICATIONS
High Stability 2 Channel Digital-analog Combined Amplifier
EX SERIES
CLASS D DIGITAL ANALOG COMBINED CIRCUIT TYPE
D
HIGH EFFICIENCY AND STABILITY
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
C
COMBINE BOTH ADVANTAGE OF
CLASS D AND CLASS H CIRCUIT
EX 2 CHANNEL SPECIFICATIONS
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.
Class H 2 Channel
High Stability Analog Amplifier
GT SERIES
GT SERIES SPECIFICATIONS
MULTIPLE PROTECTIONS
CLASS H CIRCUIT AMPLIFIER
H
HIGH EFFICIENCY AND STABILITY
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
X 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.
Class H 2 Channel
High Stability Analog Amplifier
X SERIES
X SERIES CHANNEL SPECIFICATIONS
MULTIPLE PROTECTIONS
CLASS H CIRCUIT AMPLIFIER
H
HIGH EFFICIENCY AND STABILITY
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
XT 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.
Class H 2 Channel
High Stability Analog Amplifier
XT SERIES
XT SERIES SPECIFICATIONS
MULTIPLE PROTECTIONS
CLASS H CIRCUIT AMPLIFIER
H
HIGH EFFICIENCY AND STABILITY
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
XTS 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:
. Unique, novel and elegant design. TFT display screen showing temperature, working mode, signal status and sensitivity.. Small size, light weight but high efficiency and high quality sound.. Carefully-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 H 2 Channel
High Stability Analog Amplifier
XTS SERIES
CLASS H CIRCUIT TYPE
H
HIGH EFFICIENCY AND STABILITY
TFT
TFT DISPLAY SCREEN
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
XTS SERIES SPECIFICATIONS
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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 2&4 Channel
High Stability SMPS Amplifier
HP SERIES
CLASS TD CIRCUIT TYPE
TD
HIGH EFFICIENCY AND STABILITY
CH
2 & 4 CHANNEL MODELS AVAILABLE
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
HP SERIES SPECIFICATIONS
High Stability
Speaker Management System
With FIR Built-inKT480
KT480 SPECIFICATIONS
> A new type of digital speaker management system with FIR built-in.
> 4 in and 8 out style.
> Ethernet connector on back panel.
> Much higher working stability than other type of
processor.
> Well selected high quality parts and materials.
> Good workmanship
Digital Speaker Management System With
FIR built-in high quality DSP module
Class D Digital Plate Amplifiers With DSP
PW SERIES
>>Product Features.Powerful output up to 1800W at 4 ohm per channel..Switch mode power supply and Class D circuit category..One channel, two channel and three channel styles are all available..DSP functions and DSP adjustment are available.. Well Selected parts and materials. Good workmanship
PW PHOTO LIST
PW SERIES SPECIFICATIONS
XTM200 is developed specially for meeting rooms, small bars or some other similar applications. The amplifier is 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.
Class H 2 Channel
High Stability Analog Amplifier
XTM200
XTM SERIES SPECIFICATIONS
MULTIPLE PROTECTIONS
CLASS H CIRCUIT AMPLIFIER
H
HIGH EFFICIENCY AND STABILITY
HIGH SPEED FAN
FINE CONSTRUCTION
QUALITY COMPONENTS
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Address : No.22 Street 1, Daban Industrial Zone, Tinggen Village,
Shatou, Panyu District, Guangzhou, China
Tel : +86 20 36751499
Website : www.dolsiaudio.com
Guangzhou Dolsi Audio Equipment Co. Ltd
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