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Showing posts from February, 2015

Guitar vocal adaptor amp

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…

Guitar Amp Circuit

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!

100W Guitar Amplifier

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 …

Guitar Amplifier Circuit

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…

Guitar pre-amplifier

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:

Mini Portable Guitar Ampls

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: 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 consum…

Guitar Amps

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.

Sensitivity: 35mV input for 40W 8 Ohm output42mV 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;…


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 …

Denon Subwoofers

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. >  Rating: 4.6/5 > Rating: 4.3/5 > Rating: 8/10 > Rating: 8/10
So, is a good review. It’s not perfect, but Denon’s soundbar and sub deliver a big, weighty sound, backed up by decent connections, handy features and simple operation.


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

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.

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

Car Subwoofer

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 super…

TDA1566 Audio Amplifier 2x46W / 1x92W

TDA1566general description:

The TDA1566 is a car audio power amplifier with a complementary output stage realized in BCDMOS. The TDA1566 has two Bridge Tied Load (BTL) output stages and comes in a HSOP24 or DBS27P package. The TDA1566 can be controlled with or without I2C-bus. With I2C-bus control gain settings per channel and diagnostic trigger levels can be selected. Failure conditions as well as load identification can be read with I2C-bus. The load identification detects whether the outputs of a BTL channel are connected with a DC or AC load and discriminates between a speaker load, a line driver load and an open (unconnected) load. The TDA1566 can be configured in a single BTL mode and drive a 1 Ω load. For the single BTL mode it is necessary to connect on the Printed-Circuit Board (PCB) the outputs of both BTL channels in parallel.  TDA1566 Audio Amplifier 2x46W / 1x92W
TDA1566 features:
Operates in I2C-bus mode and non-I2C-bus modeTH version: four I2C-bus addresses controlled by two p…

TDA8569Q Audio Amplifier 4 x 40W

TDA8569Q general description:

The TDA8569Q is an integrated class-B output amplifier in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in Bridge-Tied Load (BTL) configuration, each with a gain of 26 dB. The output power is 4 × 40 W in a 2 Ω load.  TDA8569Q Audio Amplifier 4 x 40W TDA8569Q features: Capable of driving 2 Ω loads Requires very few external components High output power Low output offset voltage Fixed gain Diagnostic facility (distortion, short-circuit and temperature pre-warning) Good ripple rejection Mode select switch (operating, mute and standby) Load dump protection Short-circuit safe to ground, to VP and across the load Low power dissipation in any short-circuit condition Thermally protected Reverse polarity safe Electrostatic discharge protection No switch-on/switch-off plop Flexible leads Low thermal resistance Pin compatible with the TDA8567Q.
TDA8569Q circuit diagram:

TDA8569Q layout:

TDA8950 Audio Amplifier 2x150W

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 packagesSymmetrical operating supply voltage range from ±12.5 V to ±40 VStereo full differential inputs, can be used as stereo Single-Ended (SE) or monoBridge-Tied Load (BTL) amplifierHigh output power in typical applications:SE 2 × 150 W, RL4 Ω (VP = ±37 V)SE 2 × 170 W, RL4 Ω (VP = ±39 V)SE 2 × 100 W, RL6 Ω (VP = ±37 V)BTL 1 × 300 W, RL8 Ω (VP = ±37 V)Low noiseSmooth pop noise-free start-up and switch offZero dead time switchingFixed frequencyInternal or external clockHigh efficiencyLow quiescent currentAdvanced protection strategy:…

TDA1514A Audio Amplifier 50W

TDA1514A general description:

Here the very simple but powerful amplifier kit which built based on TDA1514A amplifier chip. The circuit is for single channel only, you should build two similar circuit for stereo application. A heatsink is a must to be attached on the IC TDA1514A. This circuit can be used as well as stereoamplifiers Bass in a 5.1 system. TDA1514A Audio Amplifier 50W
TDA1514A features: Battery operationMinimum external partsWide supply voltage range: 4V–12V or 5V–18VLow quiescent current drain: 4mAVoltage gains from 20 to 200Ground referenced inputSelf-centering output quiescent voltageLow distortion: 0.2% (AV = 20, VS = 6V, RL = 8Ω, PO =125mW, f = 1kHz)Available in 8 pin MSOP packageTDA1514A circuit:
TDA1514A layout: Printed Circuit Layout and placement for mono 40 W amplifier:

Printed Circuit Layout and placement for sterio 2 x 40 W amplifier.

TDA7375 Audio Amplifier 2x35W

TDA7375 general description:
Circuit of quadruple audio amplifier using integrated circuit TDA7235 for systems surround. Circuit of quadruple amplifier for systems surround using the ci tda7375, for potency of 7 watts for channel in the version amplifying quad or 15 watts in the dual version (stereo). could arrive to 35 watts in the version.TDA7235 is a circuit integrated amplifier quadruple audio amplifier class AB capable to work in double bridge or simple quadruple amplifiers, circuit integrated with protection system of short, it requests the minimum of external components, available in multiwat 15H (TDA7375H) and multiwat 15V (TDA7375V). Although the first conception went to automotives pplications , to give him/it in a great variety of applications of low potency. That integrated circuit is ideal in the situation in that is wanted a reasonable potency and with a Power tension relatively low for your operation. That circuit drawn below it uses the basic configuration of quadruple …

TA8210AH Audio Amplifier 2x22W

TA8210AH general description: It's amizing circuit work beautiful. Is desination for audio amplification, for car. This is a circuit of 2 x 22 watt BTL amplifier using IC TA8210AH. It is not only an auto amplifier, ideal for a low-frequency auditory approach those hi-fi, with a very good linear feature. Can be fueled by a 12 volt car battery but shi from a 12 volt charger. The chip incorporates four bridge amplifiers available in two by two in order to ensure the output 22 watts per channel on 4 ohms. TA8210AH Audio Amplifier 2x22W
TA8210AH features: Peak supply voltage (0.2s): 50 Vsupply voltage VCC (DC): 25 VOperating supply voltage VCC (opr): 18 VOutput current (peak): 9 APower dissipation PD: 50 WOperating temperature: 30~85 °CStorage temperature: 55~150 °C TA8210AH circuit diagram:

TA8210AH layout:

TDA2005 Audio Amplifier 2x10w

TDA2005 description:

The TDA2005 is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications. Power booster amplifiers can be easily designed  using this device that provides a high current  capability (up to 3.5 A) and can drive very low  impedance loads (down to 1.6  in stereo  applications) obtaining an output power of more than 20 W (bridge configuration). TDA2005 Audio Amplifier 2x10w
TDA2005 features:High output power:
Po = 10 + 10 W @ RL = 2 , THD = 10 %
Po = 20 W @ RL = 4 , THD = 10 %.
Protection against:
Output DC and AC short circuit to ground
Overrating chip temperature
Load dump voltage surge
Fortuitous open ground
Very inductive loads
Loudspeaker protection during short circuit for one wire to ground

TDA2005 circuit diagram:
TDA2005 layout:

20W+20W+20W Amplifier Circuit diagram

Overview The STK400-030 is a 3-channel AF power amplifier IC supporting multichannel speakers. One package includes 20W×3ch for Lch, Rch and Cch. It is pin compatible with both 3-channel output devices (STK400-*00 series) and 2- channel output devices (STK401-*00 series). The output load impedance is 6/3Ω.

Audio Amplifier for Car Radio TDA7374B

Description: The TDA7374B is a new technology class AB Audio Dual Bridge Power Amplifier in Multiwatt package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the high power performances of the TDA7374B are obtained without bootstrap capacitors. Circuit diagram: