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Good News for all visitors of amplifiercircuit.info. From today this portal will present best prices for amplifier kits from worldwide. Buy Top 20 Amplifier kits. 

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200W Subwoofer Amplifier Circuit

Circuit Description Here is a circuit that uses a...

TDA7294 Audio Amplifier 2 x 80W

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TDA2030 Audio Amplifier 1 x40W

TDA2030  g eneral description:       Although there...

LM3886 Audio Amplifier 1 x 108W

LM3886   g eneral description: According to...

1000W Audio Power Amplifier for Subwoofers

Description The IRS20124 is a high voltage, high...

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What’s more, unpredictable feedback may cause damage to the speakers and is very unpleasant on the ear. This cheap little  easy-to-build project can help solve these technical  problems.

How many amateur music groups sing  through an amp borrowed from a guitarist or bass player? These days, music is a major hobby for the young and not-so-young. Lots of people  enjoy  making  music,  and  more  and  more dream of showing off their talents on stage. But one of the major problems often encountered is the cost of musical equipment. A guitar (or bass guitar) amplifier is designed first and foremost to reproduce the sound of the guitar or bass as faithfully as  possible.  This is where the technical problems arise not in terms of the .25” (6.3 mm)  jack, but in terms of the sound quality (the words  are barely understandable) and volume (the amp  seems to produce fewer decibels than for a guitar).  That’s  just what this circuit attempts to do. The frequency response of the amp doesn’t need to be as wide or as flat as in hi-fi (particularly at the high end), and so this sort of amplifier won’t permit faithful reproduction of the voice. If you build an adaptor to compensate for the amp’s limited frequency response by amplifying in advance the frequencies that are  then attenuated by the amp, it’s possible to  improve the quality of the vocal sound.

Guitar vocal adaptor amp

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Bass guitar super bridge amplifier 200 watt.  If you want to circuits amplifiers for bass guitar, or for using in every situation such as both listen to in the house, outside the house or outdoors. this. Guitar amp tone effects placement, Information about distortion voicing, effects placement, and cranked-tube-amp tone at any volume.. Amp parts | guitar center, Enjoy the lowest prices and best selection of amp parts at guitar center. most orders are eligible for free shipping!

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Guitar amplifiers are always an interesting challenge. The tone controls, gain and overload characteristics are very individual, and the ideal combination varies from one guitarist to the next, and from one guitar to the next. There is no amp that satisfies everyone's requirements, and this offering is not expected to be an exception. The preamp is now at Revision-A, and although the complete schematic of the new version is not shown below, the fundamental characteristics are not changed - it still has the same tone control "stack" and other controls, but now has a second opamp to reduce output impedance and improve gain characteristics.

One major difference from any "store bought" amplifier is that if you build it yourself, you can modify things to suit your own needs. The ability to experiment is the key to this circuit, which is although presented in complete form, there is every expectation that builders will make modifications to suit themselves. The amp is rated at 100W into a 4 Ohms load, as this is typical of a "combo" type amp with two 8 Ohm speakers in parallel. Alternatively, you can run the amp into a "quad" box (4 x 8 Ohm speakers in series parallel - see Figure 5 in Project 27b, the original article) and will get about 60 Watts. For the really adventurous, 2 quad boxes and the amp head will provide 100W, but will be much louder than the twin. This is a common combination for guitarists, but it does make it hard for the sound guy to bring everything else up to the same level. more info on here

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This is a medium power guitar amplifier is recommended especially for portable amplifier. The amplifier is a combination between a simple integrated audio driver, LM391-80 and a stage of output power designed contratemps with bipolar transistors.

Thermistor NTC, which is in temperature contact with output power transistors, allows to separate AO LM391 power stage when it heats too much.

The start of the thermal protection is at a NTC flow current NTC of approximately 200uA. Electrolytic condenser asure a “smooth start” to remove clicks that may occur when connecting the amplifier. It can happen that the protection can be too sensitive, in that case certain adjustments are admitted in the value of R4 or thermistor.

The standby current can be adjusted with P1. This potentiometer is initially 0 and then is adjusted to achieve a current of 50mA. Current can be increased up to 400mA if you want low distortions.

The power transistors are placed on the same side of printed circuit board, so that it can be mounted on a heatsink jointly with the thermistor. The heatsink must be large enough and have the thermal resistance of maximum 10K / W.

L1 has 20 turns with 0.8mm emailed copper, coiled over R21. C9 is a ceramic capacitor.

Guitar Amplifier Circuit

Guitar Amplifier Circuit

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A preamplifier circuit suitable for high impedance type electric guitar pickups is given here.The circuit is based on a uA 741 op-amp (IC1).The IC1 is wired as a non-inverting amplifier.The POT R1 can be used as a volume controller.The POT R6 can be used as tone controller.The switch S1 is used to produce “brilliant” or “soft” tonal effects.

Assemble the circuit on a good quality PCB or common board.

The amplifier can be powered from a 12V battery  or 12V DC power supply.

Up to 24 V DC can be used to power the circuit.i recommend 12 V DC.

The IC 1 should be mounted on an IC base 

Circuit Diagram:

Guitar pre-amplifier

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This small amplifier was intended to be used in conjunction with an electric guitar to do some low power monitoring, mainly for practice, either via an incorporated small loudspeaker or headphones.

The complete circuit, loudspeaker, batteries, input and output jacks can be encased in a small box having the dimensions of a packet of cigarettes, or it could be fitted also into a real packet of cigarettes like some ready-made units available on the market.

This design can be used in three different ways:

Mini Portable Guitar Amplifier

Max output power: 1.5W @ 9V supply - 8 Ohm load; 60mW @ 3V supply - 8 Ohm load

Frequency response: Flat from 20Hz to 20kHz

Total harmonic distortion @ 100mW output: 0.2%

Max input voltage @ 3V supply: 8mV RMS

Minimum input voltage for Fuzz-box operation: 18mV RMS @ 3V supply

Current consumption @ 400mW and 9V supply: 200mA

Current consumption @ 250mW and 9V supply: 150mA

Current consumption @ 60mW and 3V supply: 80mA

Quiescent current consumption: 6mA @ 9V, 4mA @ 3V supply

Fuzz-box current consumption: 3mA @ 3V supply

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General Description

This design adopts a well established circuit topology for the power amplifier, using a single-rail supply of about 60V and capacitor-coupling for the speaker(s). The advantages for a guitar amplifier are the very simple circuitry, even for comparatively high power outputs, and a certain built-in degree of loudspeaker protection, due to capacitor C8, preventing the voltage supply to be conveyed into loudspeakers in case of output transistors' failure.

The preamp is powered by the same 60V rails as the power amplifier, allowing to implement a two-transistors gain-block capable of delivering about 20V RMS output. This provides a very high input overload capability.

Features:

Sensitivity:

35mV input for 40W 8 Ohm output

42mV input for 60W 4 Ohm output

Frequency response:

50Hz to 20KHz -0.5dB; -1.5dB @ 

40Hz; -3.5dB @ 30Hz Total harmonic distortion @ 1KHz and 8 Ohm load:

Below 0.1% up to 10W; 0.2% @ 30W

Total harmonic distortion @ 10KHz and 8 Ohm load:

Below 0.15% up to 10W; 0.3% @ 30W

Total harmonic distortion @ 1KHz and 4 Ohm load:

Below 0.18% up to 10W; 0.4% @ 60W

Total harmonic distortion @ 10KHz and 4 Ohm load:

Below 0.3% up to 10W; 0.6% @ 60W

Treble control:

+9/-16dB @ 1KHz; +12/-24dB @ 10KHz

Brightness control:

+6.5dB @ 500Hz; +7dB @ 1KHz; +8.5dB @ 10KHz

Bass control:

-17.5dB @ 100Hz; -26dB @ 50Hz; -28dB @ 40Hz

Circuit Diagram:

Guitar Amps

Parts:

R1__________________6K8 1W Resistor R2,R4_____________470R 1/4W Resistors R3__________________2K 1/2W Trimmer Cermet R5,R6_______________4K7 1/2W Resistors R7________________220R 1/2W Resistor R8__________________2K2 1/2W Resistor R9_________________50K 1/2W Trimmer Cermet R10________________68K 1/4W Resistor R11,R12______________R47 4W Wirewound Resistors C1,C2,C4,C5________47µF 63V Electrolytic Capacitors C3________________100µF 25V Electrolytic Capacitor C6_________________33pF 63V Ceramic Capacitor C7_______________1000µF 50V Electrolytic Capacitor C8_______________2200µF 63V Electrolytic Capacitor (See Notes) D1_________________LED Any type and color D2________Diode bridge 200V 6A Q1,Q2____________BD139 80V 1.5A NPN Transistors Q3_____________MJ11016 120V 30A NPN Darlington Transistor (See Notes) Q4_____________MJ11015 120V 30A PNP Darlington Transistor (See Notes) SW1_______________SPST Mains switch F1__________________4A Fuse with socket T1________________220V Primary, 48-50V Secondary 75 to 150VA Mains transformer (See Notes) PL1_______________Male Mains plug SPKR______________One or more speakers wired in series or in parallel Total resulting impedance: 8 or 4 Ohm Minimum power handling: 75W

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So amplifiercircuit will try to do a definition of speakers, are one of the most common output devices used with computer systems. Speakers are transducers that convert electromagnetic waves into sound

waves. The speakers receive audio input from a device such as a computer or an audio receiver. This input may be either in analog or digital form. Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital speakers must first convert the digital input to an analog signal, then generate the sound waves. The sound produced by speakers is defined by frequency and amplitude. The frequency determines how high or low the pitch of the sound is. For example, a soprano singer's voice produces high frequency sound waves, while a bass guitar or kick drum generates sounds in the low frequency range. Many speakers include multiple speaker cones for different frequency ranges, which helps produce more accurate sounds for each range. Two-way speakers typically have a tweeter and a mid-range speaker, while three-way speakers have a tweeter, mid-range speaker, and subwoofer.

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Denon is a Japanese electronics company that was involved in the early stages of development of digital audio technology, while specializing in the manufacture of high-fidelity professional and consumer audio equipment. 

If you try to bay this brand, i will show a top review of this Denon Subwoofers.

www.bestbuy.com >  Rating: 4.6/5

www.amazon.com >  Rating: 4.3/5

www.trustedreviews.com > Rating: 8/10

www.digitaltrends.com > Rating: 8/10

So, is a good review.

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What is a subwoofer? Is a dedicated low-frequency speaker cabinet, usually self-amplified, that fills in

Subwoofer

the deep, rich bass that is missing from most main speakers. Subwoofers are specialized, and don't reproduce midrange or high frequencies. Most main speakers are passive (unamplified).  Subwoofers usually handle frequencies below 150 Hz or so. 

A quality subwoofer not only reproduces the thrilling deep bass notes with authority. Its presence in the system also allows the receiver / amplifier to reproduce mid-bass and mid-range notes more cleanly. All kinds of instruments, including voices, can be heard more clearly. Why should you add at least one great subwoofer to your system? 

1. Deep bass adds the emotion, the physical feeling of presence and excitement, to a good music or movie performance! One reason that inexpensive speakers sound "just OK" is that they cannot reproduce deep bass very well. 

2. Subwoofers help solve problems in speaker set-up and placement. It's difficult to set the main speakers where they are able to provide realistic imaging, and set them in the best place for bass.  In-wall and in-ceiling speakers can be placed where they work best cosmetically, without concern for their bass reproducing ability, when the system has at least one great subwoofer. 

3. High-quality subwoofers are engineered to generate the massive cone movement required by low bass reproduction. A good subwoofer is specifically designed to generate deep bass. Whether you like jazz, classical, pop or rock, a good system can be made better with a good subwoofer.

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Car Subwoofers

Bazooka BTA6100 Subwoofer Enclosure Tube Subwoofer enclosure tube gives vehicle owners an easy way to add a subwoofer to their audio setup. Like all subwoofers, the BTA6100 provides the bass, allowing listeners to scale back the bass on the other speakers, which means they can play them louder with less distortion.

Car for subwoofer

Universal Subwoofer Enclosure The universal subwoofer enclosure provides the perfect box for a truck, fitting easily behind the vehicle seat. Otherwise, the box can also find use behind the back seat of a car. The Obcon Dual 12 offers a premium MDF build with a Tri-lock joint construction. It also utilizes the Labyrinth Power Port for greatly increased bass sound. More design Car Subwoofers

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Car Subwoofer, for all people is a big gadget what love in your car. If you have a vehicle, the audio system is stronger bass sound that many audio enthusiasts desire. But subwoofers need more than a low-range speaker to perform well. The enclosures they sit in can play a huge part in the subwoofer's sound. help separate the sound waves generated by the rear of the diaphragm on the speaker from that produced at the front of the speaker. Otherwise, the two sounds would create distortion, echo, and reverberation, ruining the listening experience.

So in your car can put this design:

1. Design of car subwoofer with dual chamber.

This style is designed and built for deep bass performance. Offering a dual chamber and shared slot port vent design, 5/8-inch MDF construction, making for a durable speaker. Simple to setup and easy to use, the enclosure provides a sturdy box constructed of quality materials.

2. Design of car subwoofer with screwed down terminal cups

From the provider of superior performance and sound engineering in enclosures, offers a quality 12-inch hatchback enclosure. Completely carpet enclosed, the box has screwed down terminal cups and MDF construction. The enclosure also has 1-inch speaker baffles to help control vibrations and ensure that listeners only hear what the speaker puts out, making for a cleaner sound.

More design Car Subwoofers

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Although the protection circuit is fairly simple, it forms an effective guard against overload of the input of amplifiers and loudspeakers. Why these inputs may need protection now that line levels have been standardized is because there are signal sources on the market that generate outputs of several volts instead of the standardized 1 V r.m.s. Also, in some applications, the loudspeaker signal is applied to the line output of a separate amplifier via a voltage divider, in which case the levels may be well above 1 V r.m.s. The diagram shows a schematic that resembles the familiar series resistor and zener diode. Here, however, the zener is constructed from a small rectifier and a transistor, since commercial zeners appear to start conducting way below their rated values, which gives rise to unwanted distortion. The constructed zener makes a well-defined limitation possible and does not affect signals below the critical level. Configuring T1 as a diode reduces the number of components needed to a minimum: not even a voltage divider or potentiometer is required. Measurements on the prototype show that the input signal remains virtually undistorted at levels up to 700 mV r.m.s. At the threshold of 1 V r.m.s., the distortion is about 0.02%. Above this level, limiting is welldefined. The peak output voltage of the circuit is about 3 V with an input voltage of about 13 V r.m.s. If the limiting level is required to be slightly higher, consideration should be given to replacing T1 by three or four cascaded diodes.

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TDA8950 general description:

The TDA8950 is a high-efficiency Class D audio power amplifier. The typical output power is 2 × 150 W with a speaker load impedance of 4 Ω. The TDA8950 is available in both HSOP24 and DBS23P power packages. The amplifier operates over a wide supply voltage range from ±12.5 V to ±40 V and features low quiescent current consumption. TDA8950 Audio Amplifier 2x150W

TDA8950 features:

Pin compatible with TDA8920B for both HSOP24 and DBS23P packages

Symmetrical operating supply voltage range from ±12.5 V to ±40 V

Stereo full differential inputs, can be used as stereo Single-Ended (SE) or mono

Bridge-Tied Load (BTL) amplifier

High output power in typical applications:

SE 2 × 150 W, RL

4 Ω (VP = ±37 V)

SE 2 × 170 W, RL

4 Ω (VP = ±39 V)

SE 2 × 100 W, RL

6 Ω (VP = ±37 V)

BTL 1 × 300 W, RL

8 Ω (VP = ±37 V)

Low noise

Smooth pop noise-free start-up and switch off

Zero dead time switching

Fixed frequency

Internal or external clock

High efficiency

Low quiescent current

Advanced protection strategy: voltage protection and output current limiting

Thermal FoldBack (TFB)

Fixed gain of 30 dB in SE and 36 dB in BTL applications

Fully short-circuit proof across load

BD modulation in BTL configuration

Amplifier diagram, circuit for TDA8950:

TDA8950 circuit diagram

Datasheet for TDA8950: Download