Monday, November 13, 2017

DIY 2000W High Power Amplifier 2SC5200 2SA1943

Power Amplifier circuit 2000W
Here I will share posts about power amplifier with high power that can generate power up to 2000Watt or 2kW. Also, before I publish a power amplifier with high power that is almost same with 1600W High Power Amplifier. The same power amplifier using the final transistor with 2SC5200 and 2SA1943 is good enough and powerful to drive 2 pieces of 18-inch 8 Ohm speakers. The difference is quite clear on the speaker protector, for power 2000W is not equipped with a speaker protector you can add it yourself to this circuit Audio Speaker Protector using IC555. And for the power supply is also wider ranging from 45Volt to 75Volt DC Symmetrical. This power amplifier is stereo 1000W x 2 but its bridge tie load (BTL) so the output power have 2000W RMS.

Below the schematic of 2000W power amplifier circuit:
High Power Amplifier Circuit 2000 Watt
Download PDF File schematic: 2000W Power Amplifier Schematic.PDF

Resistor 1/4W
10R x2, 100R x8, 1k5 x2, 1k x8, 2k7 x4, 4k7 x4, 6k8 x4, 10k x8, 12k x8, 33k x4, 68k x4, 100k x 2, 5k Trimpot x2
Resistor 1/2W
10R x 28, 150R x 2
Resistor 2W
2K2 x 4, 22R x 4, 47R x 4, 10R x 2
Resistor 5W
0R22 - 0R5 x 28
1N x 4, 100N x 6, 10uF/50V x 10uF/100V x 4, 22uF/50V x 2, 100uF/25V x 4, 100N/275V x 2
1N4148 x20, 1N4007 x 8, ZD15V / 12V x 4
2N5401 x 2, 2N5551 x 2, MJE340 x 4, MJE 350 x 2, A1837/ A1306/ B1186 x 2, C4793/ C3298/ D1763 x 2
Final Transistor
2SA1941/ A1941/ 2SA1943/ A1943 x 14 ,2SC5198/ C5198/ 2SC5200/ C5200 x 14
4558 x 2

Power Supply
45V - 75V DC Symmetrical

PCB Layout Design
PCB High Power Amplifier 2000W circuit

PCB BTL 2000W Power Amplifier

VIDEO Assembling step by step

VIDEO Tested 2000Watt Power Amplifier with Subwoofer Speaker

Monday, November 06, 2017

DIY 5.1 Home Theater with Gainclone Power Amplifier

DIY Home Theater Amplifier
Hello, after a few busy days with making a 5.1-channel home theater project using a Ggainclone power amplifier, this finally comes with very satisfying results. It is undoubtedly the performance of the Gainclone amplifier, in this project I use LM1875 IC and also LM3886. The number of IC that I use 5 pieces LM1875 and also 2 pieces LM3886. 

Where is the LM1875 IC for controlling Front speakers, Rear, and Center. IC LM3886 I use to control speaker subwoofer. Some components for making this home theater project is not small as well. There are several amplifier supporting components such as stereo and mono tone control, subwoofer module, and also USB soundcard to separating the sound output from laptop/ pc into 6 channel: Front Left, Front Right, Rear Left, Rear Right, Bass / Subwoofer and Center.

First I do the power amplifier assembly LM3886 and LM1875 I have prepared all the necessary components, for the circuit scheme you can visit this page: 

Assembling Gainclone Amplifier
Some components are ready to be assembled, for the more complete gainclone amplifier can visit the link above. IC LM1875 and also IC LM3886 you can buy at www.utsource.net and also other components you can buy the site at a relatively cheap price and good service. I myself bought IC Gainclone in utsource, very safe and comfortable buy there and do not hesitate to buy it I guarantee original.
Buy Parts from utsource.net

You can visit this link to buy IC:
To buy it please you can register first at utsource.net if you feel confusion you can ask the customer service is very friendly.

Assembled Gainclone amplifier for home theater

After that, the components are ready to assemble on PCB and ready to solder, do not forget to pay attention first PCB line path is correct what not before do soldering. If it feels right ready to be soldered.
Soldering gainclone amplifier

Soldering the Gainclone Amplifier

After it is soldered and ready to be assembled with tone control and power supply.
Tested Gainclone amplifier for home theater application

Wiring Circuit 5.1 Home Theater Gainclone Amplifier
Subwoofer LM3886 for home theater
After a good soldering and tested power amplifier. I have set up tone control, subwoofer filter, and also power supply. The power supply I use the switching mode power supply instead of using a conventional transformer.

To Assemble a tone control you can visit this link: Stereo tone control TL084 & Mono Tone Control 4558
Assemble the subwoofer filter you can visit this link: Subwoofer Module 4558
And also the power supply you can visit this link: DIY SMPS 10A 20-50VDC CT

Left / Right Left / Right Channel from TL084 stereo tone control to LM1875 stereo amplifier circuit
Channel Rear Left / Right from TL084 stereo tone control to LM1875 stereo amplifier circuit
Channel Center from Mono Tone Control 4558 to LM1875 mono amplifier circuit
Channel Bass / Subwoofer from 4558 Subwoofer module to LM3886 stereo Bridge amplifier circuit

voltage supply IC LM1875 I give voltage 25VDC CT, LM3886 power supply voltage I give 30VDC CT.

5.1 Home Theater Box Amplifier
Then for the amplifier box, I also make my own using plywood, aluminum, and acrylic as the material.
DIY Power Amplifier home theater box

Add led to beautify box
Power Amplifier Box

Input-Output Terminals
Input Output Home Theater Amplifier
I just added the output terminal with the usual terminal, you can also upgrade it yourself. Chanel FR, FL, RR, RL, and center of Gainclone LM1875 and Channel Bass / Subwoofer output from LM3886 Gainclone Power Amplifier.

USB Soundcard/ Decoder 5.1 Channel
Surround sound decoder 5.1 Home Theater
 USB Soundcard/ Decoder 5.1 Channel

This 5.1 channel decoder is necessary to generate 6 different channel signals, for this home theater amplifier input I take from USB soundcard that I bought from the online store at a relatively affordable price. But the weaknesses can only be able to play music from a PC or Laptop because he is like a soundcard. For the installation directly plug this USB soundcard into a laptop and install the driver to a PC or laptop, then install the application as shown below.
USB Soundcard 5,1 Home theater
Just choose the picture with number 6 speakers, to make output 6 channel and connect the output to each input amplifier.

Speaker Placement 5.1 Home Theater Amplifier
Settng Speaker Home theater 5.1 Channel
After the amplifier is tried normally, prepare your speakers for placement like the picture above so as to get the sound quality alive. Below the video test from my home theater amplifier.
DIY Home Theater Amplifier Gainclone

Wiring Circuit
Home Theater Power Amplifier circuit with gainclone

 [Video Test] 5.1 Home Theater with Gainclone Power Amplifier 

Switching Mode Power Supply 10A 20-50V DC CT

Switching Mode Power Supply
This is a power supply circuit with switching mode with output voltages ranging from 20 Volts to 50 Volt DC CT Symmetrical 5 up to 10 Amperage very suitable for power amplifier circuit. By using Gacun TV Module 29 "and also some other supporting components such as transformer etc, you can make this power supply circuit. Below the schematic circuit:
SMPS Power Amplifier 10Amper
Component list power amplifier with output 10A 20 - 50V
R1= 2K2/ 3W
R2= 2K2/ 3W
R3= 510R 1/2W

C1= 1uF / 450V
C2= 1uF/ 450V
C3= 220uF / 400V
C4= 4700uF/ 80V
C5= 4700uF/ 80V
C6= 100N
C7= 100N
C8= 1N/ 2kV

BR1= Bridge Diode 3A
D1= MUR820TR Ultra Fast Diode
D2= MUR820TR Ultra Fast Diode

TR1= EMI Filter
TR2= Transformer with GAP Primary Winding=  45 Turns , Secondary Winding= 1 Turn : 5Volt Output.

Connector & Misc:
J1= AC Input 220V
J2= Output DC Symmetrical 1: +Volt 2: Ground 3: -Volt
Gacun Module:
SMPS Power supply with gacun module
SMPS Assembled:
SMPS Power amplifier 10A best

Gacun power supply for power amplifier

Tested Switching Mode Power Supply 10A 20-50VDC

Friday, November 03, 2017

Stereo Tone Control Circuit uses TL084/ TL074

Stereo Tone Control using IC TL074 or TL084
This is a Stereo tone control circuit using stereo ic op-amp TL084 or also can use TL074, for recommendation i recommend to use IC TL084, Where the ic has the following features.

Operational amplifier TL084 JFET features:
• Low Power Consumption: 1.4 mA/ch Typical
designed to offer a wider choice than anything else
• Wide Common-Mode and Differential Voltage
previously developing an operational booster family. Range Each of these JFET input amplifier amplifiers 
• Low Current Input Bias: 30 pA Typical combining JFET and bipolar transistors with high voltage that fits well in monolithic integrated circuits. 
• Low Current Input: 5 pA Typical The device displays low-level low slew, low input bias 
• Short Circuit Protection Output and offset current, and low offset voltage 
• Lowest Harmonic Distortion: 0.003% Typical temperature coefficient.

This tone control circuit has good quality, can be used in audio hi-fi amplifier. To get a good sound quality is also required components that meet the requirements and the same with the circuit below

Stereo Tone Control Circuit Diagram:
Stereo Tone Control Circuit Diagram using OPAMP TL084
Part List & Description:
R1= 5K6 1/4W
R2= 22K 1/4W
R3= 10K 1/4W
R4= 10K 1/4W
R5= 5K6 1/4W
R6= 22K 1/4W
R7= 10K 1/4W
R8= 10K 1/4W
R9= 22K 1/4W
R10= 68K 1/4W
R11= 8K2 1/4W
R12= 8K2 1/4W
R13= 10K 1/4W
R14= 4K7 1/4W
R15= 4K7 1/4W
R16= 22K 1/4W
R17= 22K 1/4W
R18= 22K 1/4W
R19= 68K 1/4W
R20= 8K2 1/4W
R21= 8K2 1/4W
R22= 10K 1/4W
R23= 4K7 1/4W
R24= 4K7 1/4W

RV1, RV2= 50K Pot Bass Set
RV3, RV5= 50K Pot Mid Set
RV4, RV6= 50K Pot Treble Set
For volume setting u can add before input

C1= 1uF 50V Radial Electrolityc/ Audio Grade Cap
C2= 22pF Ceramic
C3= 1uF 50V Radial Electrolityc
C4= 56N MKP/Ceramic
C5= 56N MKP/Ceramic
C6= 1uF 50V Radial Electrolityc/ Audio Grade Cap
C7= 22pF Ceramic
C8= 1uF 50V
C9= 56N MKP/Ceramic
C10= 56N MKP/Ceramic
C11= 4N7 Ceramic
C12= 10N Ceramic
C13= 2N2 Ceramic
C14= 4N7 Ceramic
C15= 10N Ceramic
C16= 2N2 Ceramic

Integrated Op-Amp Circuit
U1= TL074, TL084 Operational Amplifier

J1= Audio Input L
J2= Audio Input R
J3= Audio Output to Amp L
J4= Audio Output to Amp R
J5= +15 VDC
J6= -15 VDC

Power Supply Circuit Diagram for Stereo Tone Control:
Power Supply Circuit for Stereo Tone Control
Part List & Description:
R25= 1K 1/2W
R26= 1K 1/2W

C17= 2200uF/ 50V Radial Electrolityc
C18= 2200uF/ 50V Radial Electrolityc
C19= 220uF/ 25V Radial Electrolityc
C20= 220uF/ 25V Radial Electrolityc
C21= 100uF/ 25V Radial Electrolityc
C22= 100uF/ 25V Radial Electrolityc
C23= 100nF MKP
C24= 100nF MKP

D1= 1N4007/ 1N4002
D2= 1N4007/ 1N4002
D3= 1N4007/ 1N4002
D4= 1N4007/ 1N4002
D5= 15V Zener 1W
D6= 15V Zener 1W

Q1= TIP31/ TIP41
Q2= TIP32/ TIP42

Conector & Misc
J7= Main AC 220V input
J8= To +15 VDC Tone Control
J9= To -15 VDC Tone Control
TR1= Stepdown Transformer 220V to 15VAC/ 20VAC

For DIY'ers I also share the PCB Layout include power supply circuit to make it easier.

PCB Layout Design
PCB Layout Design Stereo Tone Control include power supply

For PCB Manufacturing you can order at ourpcb:

Finished Stereo Tone Control
Stereo Tone Control Circuit using IC Op AMp TL084

*Good Luck

Monday, October 23, 2017

Stereo Gainclone Power Amplifier LM1875

This is a stereo power amplifier Gainclone LM1875, a lot of people are interested in this Gainclone power amplifier, one of my own. There are also many who modify this power amplifier to be more powerful and also pleasant to hear and demand among various audiophile circles.

Some projects are also available that make this Gainclone power amplifier for home theater 5.1 channel audio project, usually combined with LM3886 Gainclone power amplifier as a power amplifier for subwoofer speakers. For the Power LM3886 circuit, you can see this link: 200W LM3886 Gainclone Amplifier & Parallel Gainclone amplifier LM3886.

Below is the scheme of LM1875 stereo Gainclone power amplifier circuit:
Stereo Gainclone Power Amplifier LM1875
Components List:
R1,R6= 1M
R2,R10= 22K
R3, R8= 1K
R4, R6= 20K
R5, R7= 1R/3Watt

C1,C11= 2u2F Audio Grade Capacitor
C2,C12= 22uF 50V
C3,C4,C8,C10= 100N MkP
C5,C10= 220N Decoupling Ceramic Disc
C6,C7,C13,C14= 100uF 50V

U1,U2= LM1875, LM1875T

Power Supply= 35V DC Symmetrical
Pin 5 LM1875= +35V
Pin 3 LM1875= -35V

Output Power= 2x 20W RMS 8Ohm Load
Stereo PCB Layout Design Gainclone Power Amplifier LM1875:
PCB Stereo Gainclone Power Amplifier LM1875

[VIDEO] Tested Stereo Gainclone Amplifier LM1875

Good Luck

Tuesday, October 17, 2017

OCL Power Amplifier 50Watt

Power amplifier circuit with PCB and component list about 50W OCL Power Amplifier
OCL Power Amplifier Circuit Diagram

Power Amplifier OCL 50 Watt is a power amplifier that is now very popular and widely used for audio in homes. Besides the price is relatively affordable, the sound quality was arguably tolerable for audio lovers. We will share a little about the circuit and component list that is in Power Power Amplifier OCL 50 Watt.

Circuit Diagram:
OCL 50W Power Amplifier Circuit Diagram
Components list:


D1=9V Zener


Power Supply: 35V DC Symmetrical
Output Power: 50Watt RMS

PCB Layout Design
PCB Power Amplifier 50W

Power Amplifier PCB Design Layout OCL 50W

See also 150W OCL Power Amplifier

Monday, October 16, 2017

Parallel Gainclone Power Amplifier LM3886

Paralleling Gainclone Power Amplifier LM3886
For you audio enthusiasts, it is not unfamiliar with this LM3886 IC. This IC is very popular by various DIY audio circles because this amplifier has a small distortion, very small. Also called Gainclone Amplifier, which is very similar to the performance with Amplifier Tubes. And it is also suitable for controlling speaker subwoofer let alone combined with Power Amplifier Circuit using IC LM1875, is perfect for your home theater audio usage. See also: Stereo Gainclone Power Amplifier LM1875

The basic circuit power amplifier uses one IC LM3886
Power Amplifier Gainclone
PCB Power Amplifier LM3886
Gainclone Power Amplifier LM3886 Circuit

[VIDEO] Basic LM3886 PCB Less

IC LM3886 which can power up to 135W Instantaneous Peak Output Power Capability. And 68W Continuously, if supplied with 35V DC voltage.

For the purpose of subwoofer then also require power which is also not small. So here I will share the LM3886 parallel circuit to increase the power of this Power Gainclone. Here's the circuit scheme and also the PCB Layout:
Circuit Diagram of Parallel LM3886
Component Lists:
R5=0,22R 3W
R10=0,22R 3W
R11=2K2 1W


U1=LM3886/ LM3886TF
U2=LM3886/ LM3886TF

You can use more LM3886 by multiplying the circuit diagram.

PCB Gainclone amplifier

PCB Layout LM3886 Power AMplifier Parallel

Prallel Gainclone LM3886

LM3886 Gainclone Power Amplifier

 See also:Super Bass LM3886 Power Amplifier

See also LM3886 Stereo:

Wednesday, October 11, 2017

Active Crossover Circuit uses LM741

An active crossover circuit will certainly produce better sound quality than the passive type, the LM741 IC used in the audio circuit this time is quite easy to get to be used as a crossover that will be forwarded to the power amplifier. Crossover on the amplifier, there are two types of crossover that is, active crossover and passive crossover. Each crossover has advantages and disadvantages depending on the needs of each. While on the crossover circuit that I share here is an active crossover circuit using IC LM741 which is none other than single op-amp IC.

Active crossovers will certainly provide better quality for your Hi-fi system that intends to upgrade the sound quality. The workings of this active crossover simply by breaking the audio input signal into 4 bands, low frequency, medium frequency, high frequency and subwoofer frequency. The circuit can be activated using double supply +15 / -15 V DC.Below the schematic diagram of active crossover circuit.
Active Crossover circuit uses LM741

There are some things that need to be considered in making this active crossover circuit:
  • Be sure to use a good type of PCB, try fiber type. (PCB Layout design already exists)
  • Power supply for the op-amp should be noted that is + 15 / -15 V DC
  • Use socket for IC LM741
  • Resistors and capacitors can be replaced to produce different frequency amplifiers.
LM741 IC Pin Out Diagram

LM741 IC Pinout Digram

PCB Layout Design Stereo Active Crossover + Power Supply
Stereo Active Crossover PCB LM741