Audio amplifier free download

Why do we need uF and 0. Or is the uF acting as a buffer for the bass? I understood from your other tutorials that C2 and R1 act as low pass filter. When I google for RC low pass filter the load is connected between the resistor and capacitor. Here C2 and R1 are in series. I have tested it and I see indeed that it works as a low pass filter. But how? Could you tell me more about the theory here? Thanks btw for this great article and all the others! Sir i am also interest to do this circuit, And I need speaker specification In which Rate of Speaker to be work on this circuit with best bass and volume.

Sir I want to use a condenser microphone as my input instead of using audio jack. How can I do it?? I took a lot of time to see. Built this one today, in stereo set 1 for right channel and 1 for left channel. I used the LM and looking to replace it for the LM Only negative thing is when I connect the bass boost that there is a lot of dB loss.

Do you want an analog FM radio circuit or a chip that does all the complex RF stuff? Is it possible to get boost mid and boost trebles controls putting more 0. First of all it was veryy amazing to see such an elaborate and simply designed project. Great Job. Can u please tell what kind of speaker to use? Like is there any power rating associated? Thanks alot. Hi, I am building an amplifier for 8 Ohm, 80 Watt speakers.

I want it to be stereo, as well as to have a subwoofer. I have tried and tried and tried to build this amp in every different way. I have spent probably more than 24 hours working on this.

Finally, with this design, I can just barely make out the big notes, as louder crackles than the constant crackles that it produces. When I pause, it is absolutely silent, so I fixed that. It sounds like no one else is having this problem.

Please, if anyone knows what might be going on, I will give you my firstborn child in exchange for the answer. This can be frustrating, I know. There are many possibilities. You might have a faulty component. Just build another circuit without reusing any single component from your current build. See if it works. I once had a problem and it boiled down to a connection with the alligator clip.

I bought a new set of jumper wires and one of the jumper wires had a broken connection between the alligator clip and the wire. So, use everything new and start from scratch.

The circuit works, although that one cap is useless, as has been pointed out by many previous people. First of all thank you for this great tutorial. Nice and easy to follow.

Inspired by this project, I have built a stereo amplifier using two LM Basically speaking, I have doubled the schematic, sharing same 12V power supply, and using stereo pots. Assembly was ok. Amp is working ok, but I noticed one channel volume is a bit lower compared to the other. I think problem is in one or more components. What should I do to debug? Which component could be faulty?

I can upload schematic if you need. Good article. Any suggestion. You help will be greatly appreciated. On the last schematic with the bass boost, the potentiometer for the bass boost has one pin NOT connected. Should that pin be connected to GND? Is it too low value or could something else be the case? I have 1 questions….

Can I use 90k pot? For guitar, do I connect the speakers directly or do I need a power amp? Hi, great article. Has somebody made this into a board that I can purchase. I have the audio out, as shown and can get power, but was hoping to buy as a circuit instead of having to build on breadboard. I am having issues with my AVR where my onboard subwoofer amp has died and I am thinking of using this schematic to power the speaker as an external amplifier.

I am thinking of taking the signal from the preamp output to the input of the new amplifier. Also thinking of 12V for the supply. Should I need to step it down to 9v using a transistor for a better sounds quality? Instead it is a high tone control. Also I found that the 10 K variable resistor needs a limit or it will kill the audio. Going lower than that kill the audio. Can you build a more powerful stereo amplifier with at least 4 microphone inputs and with ability to play mp3 music files from a pen drive.

There must a mixing circuit to mix the pen drive music with the microphone inputs in such a way that we can sing a song with the instrumental music playing from the pen drive. If a bass treble mid circuit can be added, it will be a wonderful amplifier every home should possess. The amp should have three modes of working. In one mode, we will be able to play a song from the pen drive. In mode 2 we can speak through the microphone.

In mode 3 we can sing along with the music playing from the pen drive. Buying such an amplifier from the shop will be very expensive. But if we can make one circuit for this, it will be very good and inexpensive. I request all the readers of this forum to contribute your ideas to this project. Hi Circuit Basics. I am a relative newbie to electronics. I need a small amp to act as the output stage for a regenerative valve radio receiver I have just built. This looks ideal.

Can you tell me if the 10K potentiometers that you specify for the volume, gain and bass boost are logarithmic or linear? Thanks and regards, Ian.

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Email me new tutorials and very occasional promotional stuff: Yes No. Related Posts. Circuit Basics on April 5, at am.

Sipan Hadji on February 13, at am. Will on December 19, at am. Circuit Basics on March 8, at pm. Aravind on March 31, at pm. Sanjeev Chauhan on February 24, at pm. This circuit not working at all Reply. Hi Sanjeev, double check to make sure everything is connected properly, and the polarity of the electrolytic capacitors are correct… Reply. NOME on December 30, at pm.

FAWad Khan on December 6, at am. Michael on September 10, at pm. DungFung on July 29, at pm. Get a Linux distro, you can do pretty much everything from the command line. Rodolfo on April 27, at pm. Onur on May 14, at pm. Tuck on May 13, at am. You could use a small boost converter. Tim on January 8, at am. Juan Esteban on June 7, at pm. Simon Tay on August 28, at pm. Jefferson Yagdulas on March 3, at pm. Ola on June 24, at am. Julio on July 12, at am.

Kennynva on January 4, at am. Mayank on July 26, at pm. Algen on May 14, at am. I want to know the voltages too of each capacitor : Tnx Reply.

Tom on July 14, at pm. Roy Hammond on July 17, at am. As a request, would you not like to attempt a oscilloscope using an arduino uno with the same clear instructions Thanks again Roy Reply. Rahil Gada on July 22, at pm. May I know what are the voltage of all the capacitor used? Thanks Reply. Bonn Joemar Oleo Cabrera on July 27, at pm. S Prakash Rao on July 11, at pm. Alex on August 10, at pm. Is there any cheap and good quality stereo amplifier for headphones?

Circuit Basics on August 22, at am. Thanks for noticing! Sorry for the confusion… Reply. Gerard on August 25, at am. What was the impedance of the speaker you used? I would like to replicate this circuit. Keep in mind though, higher voltage rated capacitors are larger and more expensive… Reply. Nuwan madusanka on October 13, at pm. I make this circuit.. Novice on August 25, at pm. I used a 4 ohm speaker Reply.

Oh btw, i was trying to make the minimal lm aduio amplifier Reply. Novice on August 26, at am. Cant seem to figure out what is wrong cos i followed the diagram exactly without success Reply. You need to do the one that is 15 watts so we can really jam out. DevRoy on September 5, at pm. How can I build a 7. Is the ic LM n will be the same kind or what.

I have made the previous works fine. Yes a common ground in audio is not the way to go Reply. Mike T on September 6, at am. Simon Tay on September 12, at pm. Mike on September 13, at am. Was real informative and will probably help solve my problem. Billy Amateo on September 22, at am. Circuit Basics on November 19, at am. Billy Amateo on September 23, at pm. Yes it will Reply. Roi Magadia on September 29, at am. The only diagrams I have are already included in the article Reply. Simon Tay on September 29, at pm.

Mubeen on October 2, at pm. I think you should be good to go without any mods to the circuit. Have fun! AlharbiM on October 29, at am. The only circuit diagrams I have are already included in the article. Hariz on November 15, at am. Jithin George on November 17, at pm. Circuit Basics on November 26, at am. Talha on November 23, at pm. Louis on November 28, at am. Igor on December 1, at pm. This is actually explained in the article.

Onno on December 1, at pm. Abdelrahman Tarek El-Ruby on December 1, at pm. Hi, I am doing an audio amplifier but with 3 outputs instead of single output…so what should i add to make it work Reply. Thanks… Reply. Tony Clayton on December 4, at am. Jay on December 8, at pm. Thanks from Colombia! G Chang on December 21, at pm. It should be required to do some things with this before graduating to a IC class D amp! Daniel on February 3, at pm. You can use another value for all of the capacitors, but they should around the same value Reply.

Michael Hiltz on February 22, at pm. Can you post the Schematics for these Circuits? Sure, I just added schematics for each circuit… Reply. Aniket Sarkar on March 19, at am. Earvin Ladera on March 29, at am. Siraaj on April 14, at am. Bruno on April 27, at am. Thanks for this article, i was looking for something like this! Thanks in advance!

Just run the positive input straight into pin 3… Have you looked into the TDA? Philip Samsa on April 28, at pm. Arturs Spiridonovs on May 12, at pm. Brian on May 22, at pm. Circuit Basics on May 25, at am. That was a mistake, the diagrams have been updated now Reply. Chris on July 18, at pm. Circuit Basics on May 26, at am. I am at your mercy sir if any amount to be paid i am ready to pay I am your fan.

S Prakash Rao India Reply. Shafin on October 1, at pm. Though its better if you do…… But if you search in Google with the name of the project you will find the script…… Just copy and paste it Reply. Shafin on October 5, at pm. Anas Ahmed on May 27, at pm. Fran on June 24, at pm. Thank You : Reply. Norton Zig on June 24, at pm. R on June 26, at am. What is the output of the circuit? With 9V and an 8 ohm speaker the power is to mW Reply. Babu Ramalingham on July 1, at pm.

Raja on August 1, at am. Where is the schmetic diagram? Micheal on August 1, at am. But you specify the voltage of each capacitor Reply. Shafin on October 1, at am. David Bliss on October 22, at am. They work just as well and are better than a handfull of jumper wires… Reply. Sunil Vishwakarma on October 10, at am.

Bandid on October 12, at pm. I wanna bass boost circuit.. Jesyca JC on October 24, at am. Florence on October 24, at pm. Venkatagireesh on October 27, at am. How capacitance and resistance value is selected for speakers Reply. Auxtics Technolgies on November 17, at pm. R D Biggs on November 20, at am. Dan L on November 24, at pm. Hi, great tutorial and very informative thank you!

Many thanks : Reply. The datasheet shows a. Is this value critical? Matthew on December 14, at am. WillW on December 18, at am. Anybody else having this problem, or have any suggestions? Moose on December 22, at am. A fast installation tool on the rear is the clip LED indicator that can be used during the configuration of the input gain. This 2-channel digital power amplifier provides 2 x watts output power volts or 4 ohms, that can easily be bridged into a powerful watts volts or 8-ohm single amplifier.

During the configuration of the input gain the rear clip LED indicator can be used for a fast and easy installation. The multiple inputs and link connectors make the REVAMPT a versatile and installer-friendly amplifier superior to any other in the fixed install market.

This 2-channel digital power amplifier provides 2 x watts output power volts or 4 ohms, that can easily be bridged into a powerful watts volts or 8 ohm single amplifier. The REVAMPT is a convection cooled class-D amplifier without built-in fans which implies that the amplifier is completely noiseless and dust-free at all times. The new all-purpose REVAMP is a professional 2-channel digital power amplifier with 2 x watts dynamic output power 4 ohms, that can easily be bridged into a powerful watts 8 ohms single amplifier.

This class-D amplifier is convection cooled without built-in fans which implies that the amplifier is completely noiseless and dust-free. The unit has multiple speaker and amp protection circuits built inside for DC protect, over current protect, over temperature protect and protection against input overload.

During the configuration of the input gain, the rear clip LED indicator is very useful and handy for a fast and easy installation. Versatile connectivity due to balanced and unbalanced inputs on euroblock or cinch, pass-through outputs on cinch and loudspeaker outputs on euroblock. Housed in a straightforward 1U slim and lightweight design without front control our REVAMP is an amplifier unlike any other in the small and mid-sized fixed install audio market.

Stereo Digital amplifier, convection cooled. This class-D amplifier is convection cooled without built-in fans which implies that the amplifier is completely noiseless and dust-free at all times. The REVAMP is a professional 2-channel digital power amplifier with 2 x watts output power 4 ohms, but is also bridgeable 1 x watts 8 ohms. The digital signal processor inside operates with one simple push button at the back of the unit to select an operating mode 6 presets.

An example of a preset is the combination CH1 subwoofer and CH2 trafo load. In this example you have a low-pass filter for increased stability when using volt transformers on the output, allowing you to use volt speakers as top speakers combined with a standard low impedance subwoofer. With the other presets, channels can be bridged and high pass filters can be applied to a channel.

Ease of use, high-tech, reliability and big output power has never been as cleverly combined as in this REVAMP amplifier. The digital signal processor inside operates with one simple push button at the back of the unit to select an operating mode 10 presets what makes this amplifier the ideal multipurpose tool for applications where you need a lot of power in two different zones like fitness centers or stereo applications.

The amplifier contains an intelligent variable speed cooling fan. The very intuitive front display shows what is going on with one blink of an eye. This manifests itself in a great dynamic power with an unseen musicality and exceptional dynamic sound. There are 9 presets available which can be selected by the button at the back of the unit.

With the other preset channels can be linked and high pass filters can be applied to a channel. The digital signal processor inside operates with one simple push button at the back of the unit to select an operating mode 10 presets what makes this amplifier the ideal multipurpose tool for applications where you need a lot of power in two different zones like fitness centres or stereo applications.

The unit has extended speaker and amp protection circuits inside for DC protect, over current protect, over temperature protect and protection against input overload. REVAMPT is a professional 4-channel digital power amplifier with 4 x watts output power volt or 4 ohms , but the unit is also bridgeable to 2 x watts volt or 4 ohms. The unit incorporates a highly efficient SMPS power supply, outputs with efficient Class D output topology and output transformers.

REVAMPT is the ideal amplifier for applications with 4 zones in mono, 2 zones in stereo or even bridged dual mono or bridged stereo systems. This amplifier contains an intelligent variable speed cooling fan that only will be activated in case of emergency. It would keep the video track unchanged, and the audio will be adjusted with an increase or decrease in volume.

Home Download Buy Now Support. Contact Us. Audio Amplifier Pro works with all key video and audio formats. Music Editing Master. Audio Amplifier Pro. Easy Audio Editor.