Different maximum acoustic guitar and acoustic guitar pickups are specially equipped with an internal permanent magnet and the coils, which produce the same audio frequency electrical signal through the vibration of string cutting magnetic lines. However, the electrical signal thus obtained is very weak, and if it is directly connected to the speaker, can not transform into sound waves. Only the weak current is amplified to be able to drive a speaker to achieve electro-acoustic transducer, and served in this work is the electro-acoustic guitar sound equipment.

Guitar Amplifier - Detailed structure

Electric guitar sound, electro-acoustic guitar playing had friends must know that if there is no amplifier and speakers, then, even if it is the world's most expensive piano, it is only a "dumb." For electro-acoustic guitar, the PA speakers not only its "mouthpiece", is also one of the mysteries to get a good sound.

1, preamp and power amplifier

General home hi-fi speakers and amplifier are separate, but the guitar sound designers and easy handling in order to ensure the identity of the voice, are generally part of the amplifier and speakers bundle fabrication, if not in the same casing, the designer also will likely be fixed by the two parts together. Built-in speaker amplifier circuit generally preamp and power amplification of two parts. Preamp for weak signal output from the pickup lines for shaping amplification, often accompanying a tone (EQ) and distortion (Booster) circuit, is one of the secrets superb guitarist produced tones. Is responsible for the content of the power amplification by the processing circuitry through the front stage of the signal is amplified to drive a speaker sound enough size to achieve the final electro-acoustic conversion. Professional Guitar Amplifier

2, integrated and split

The so-called integrated speaker refers to the former class, power amplifier and speakers installed in the same resinous wood or type of cabinets, now available in the general sale are also such. Splitcircuit portion refers to the type of installation and the separate speaker, due to the increased cost of the housing, generally a high-end product. In recent years, designers in order to meet the musicians get a variety of different tones requirements, they put a separate preamp circuit made of external products, the use of various types of digital processing circuitry to simulate the characteristics of the speaker's voice, and other speakers as Line6POD analog class effects. And with that external preamp, or if you want to get Maher 5150 Budweiser speaker's voice in the studio, you do not find someone Quban your speakers up.

3, tubes, transistors, digital circuits

Internal guitar amp

Guitar amp amplifier circuit according to the different core components used can be divided into three categories: the first stage amplifier and power amplifier circuits using a tube (also known as "bile") speaker, the most warm and earthy tones, rock and blues musicians love; using transistors speakers, lighter in weight than the tube, relatively sharp tone, and live longer; utilize digitally amplified products come out soon, generally have low power consumption, the advantages of a clean sound, general have built a variety of synthetic effects. However, these three speakers are not completely separate, designers often take advantage of the characteristics of each of these elements are combined. For example, some sound stage circuit using a transistor and the power amplifier tube is used; also used a digital processor (DSP) as a former, with the tube type power amplifier.

4 speakers

After amplification circuit for amplifying guitar pickup signal is supplied to the central loudspeaker coil generates a changing magnetic field, the magnetic core and the magnetic interaction of the speaker itself, to promote the movement of the speaker cone, the vibration will be ignited air people ears heard the sound. Speaker is the end of the entire electro-acoustic conversion of sound texture (harmonic) and the amount of sense (LF) has a great influence. Speaker size is usually expressed in inches, in diameter between 8 to 15 inches of the most common products, one inch equals approximately2.54 cm.

5, back open and closed

Both terms refer to different structures speaker box. As the name implies, the open back of the rear speakers is open, but closed speaker cabinet is fully enclosed. The former speaker of the most typical Fender, the latter is one of the characteristics ofMarshallspeakers.

6, the input and output interfaces

Depending on the specific model, the number of input and output interfaces with style speakers will vary, but are generally equipped with one or two inputs (divided into high and low impedance), effects loop terminals (can be cascaded external the effects), external speaker connector (another speaker) and headphone output terminal. Generally use a large two-core non-equilibrium interface model is also used in the recording studio with XLR balanced outputs. When the need for wider sound pressure surface, external speaker connector comes in handy. You can use this interface and a dedicated speaker wire to connect additional speaker cabinet. But, then you should calculate the impedance values, because when two parallel speaker speaker, amplifier circuit impedance values will be driven less by a factor of two points. If your amplifier does not support the speaker impedance so low, it will not emit sounds too good. On this issue, you can see the speaker of professional books, for a guitarist who, it is also a good "practice."

Although brings up some different sounds, but if you want to fix a wide range of sounds, you must use an external effects through preamp, usually a single block or digital composite dedicated guitar effects pedal. In the series of such effects, effects loop terminals can be used, so that we can try to ensure that the next speaker in the tone of the original features of the premise, to reduce the level of sound degradation. Connected in sequence are: loop sending terminal (FxSend) - effect of input terminals (Input) - the effect of the output terminal (Output) - loop back to the terminal (FxReturn).

In recent years, with the rise of home studio, guitar amp also changed. Limited to the living environment, musicians often did not like in the studio with a microphone picking up the sound of the speaker's approach to recording. Therefore, the guitar speaker front stage designers leads to a signal amplification circuit, so guitarists can this signal directly to the digital MTR (multi-track recorder), to maximize their timbre characteristics possessed by the speaker (actually a the most influential voices sound preamp circuit characteristics).

7, guitar amp various parts of the name:

ch1 ch2 input controller input ch2 ch1 controller panel power indicator integrated speakers Speaker Dust wheel side (front) power switch ST-BY switch after effects loop terminal External speaker terminals back soundboard reverb tube speaker integrated speakers (rear) speaker amp guitar amp speaker cabinet split.

As we all know, classical guitar sound good or bad. Depends on the quality of its resonance box, and electric guitar sound is good or bad, good or bad depends on the speaker's pronunciation.

Electric guitar speaker is sounding body electric guitar, electric guitar only to produce a beautiful sound through the speakers, speakers are also part of the instrument. This is how to choose and use the speakers is very important. People who do not understand this, it is often treated as ordinary speakers, free to be inserted into a variety of audio equipment, electric guitars or amplifiers in general, thinking that U can produce a beautiful sound, the result is disappointing. What is more, completely ignoring the fact that the different characteristics of various musical instruments, would a normal speaker for the band to use. Adjust generated many conflicts, loss, and not the whole. When the resulting performances, sound confusing. Therefore, the current speaker has rarely shared, each matching the right speakers, is to ensure the success of the show's premise.