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Mesa Boogie Mark Series
The Mesa/Boogie Mark Series is a series of guitar amplifier made by Mesa Boogie, Mesa Engineering (more commonly known as "Mesa/Boogie"). Originally just referred to as "Boogies", the product line took on the moniker "Mark Series" as newer revisions were put into production. The Mark Series amplifier was Mesa's flagship product until the introduction of the Mesa/Boogie Rectifier, Rectifier series, and the amplifiers are collectable. Mark I Randall Smith began Mesa/Boogie with a practical joke: he borrowed a Fender Princeton (a small 12-watt amplifier) from his friend, Barry Melton of Country Joe and the Fish, and "hotrodded" it by replacing the amplifier section with a powerful Fender Bassman amp and installing a 12-inch speaker instead of the original 10-inch. The resulting amplifier proved to be loud and successful, and Smith made more than 200 of these Princeton "Boogies" - a name allegedly provided by Carlos Santana, who is to have exclaimed "Man, that little thing really boog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reverb
In acoustics, reverberation (commonly shortened to reverb) is a persistence of sound after it is produced. It is often created when a sound is reflected on surfaces, causing multiple reflections that build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and air. This is most noticeable when the sound source stops but the reflections continue, their amplitude decreasing, until zero is reached. Reverberation is frequency dependent: the length of the decay, or reverberation time, receives special consideration in the architectural design of spaces which need to have specific reverberation times to achieve optimum performance for their intended activity. In comparison to a distinct echo, that is detectable at a minimum of 50 to 100 ms after the previous sound, reverberation is the occurrence of reflections that arrive in a sequence of less than approximately 50 ms. As time passes, the amplitude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instrument Amplifiers
An instrument amplifier is an electronic amplifier that converts the often barely audible or purely electronic signal of a musical instrument into a larger electronic signal to feed to a loudspeaker. An instrument amplifier is used with musical instruments such as an electric guitar, an electric bass, electric organ, electric piano, synthesizers and drum machine to convert the signal from the pickup (with guitars and other string instruments and some keyboards) or other sound source (e.g, a synthesizer's signal) into an electronic signal that has enough power, produced by a power amplifier, to drive one or more loudspeaker that can be heard by the performers and audience. Combination (combo) amplifiers include a preamplifier, a power amplifier, tone controls, and one or more speakers in a cabinet, a housing or box usually made of wood. Instrument amplifiers for some instruments are also available without an internal speaker; these amplifiers, called ''heads'', must plug int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soldano SLO-100
The SLO-100 (short for Super Lead Overdrive 100) is a guitar amplifier designed by Mike Soldano and the first production model from his company Soldano Custom Amplification. Released in 1987, the SLO-100 was hand-built and pushed the boundaries of high-gain guitar tone during an era of mass-produced amps that were insufficient for increasingly heavy music without modifications. Hard rock and metal guitarists like Eddie Van Halen, George Lynch, and Mick Mars helped popularize the SLO-100 and its high-gain sound, while the amp's clean and lower-gain tones attracted players like Eric Clapton, Mark Knopfler, and Warren Haynes. The SLO-100 is considered one of the industry's benchmark amps and helped establish the boutique amplifier market. History By the mid-1980s, guitarists in hard rock and metal were limited in their pursuit of high-gain sounds to Mesa/Boogie amps like the Mark II or Fender or Marshall amps that had been "hot-rodded" with often expensive modifications by an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIDI
Musical Instrument Digital Interface (; MIDI) is an American-Japanese technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and related audio devices for playing, editing, and recording music. A single MIDI cable can carry up to sixteen channels of MIDI data, each of which can be routed to a separate device. Each interaction with a key, button, knob or slider is converted into a MIDI event, which specifies musical instructions, such as a note's pitch, timing and velocity. One common MIDI application is to play a MIDI keyboard or other controller and use it to trigger a digital sound module (which contains synthesized musical sounds) to generate sounds, which the audience hears produced by a keyboard amplifier. MIDI data can be transferred via MIDI or USB cable, or recorded to a sequencer or digital audio workstation to be edited or played back. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Petrucci
John Peter Petrucci (born July 12, 1967) is an American guitarist, best known as a founding member of the progressive metal band Dream Theater. He produced or co-produced (often with Mike Portnoy before Portnoy's absence from the band 2010-2023) all of Dream Theater's albums from ''Metropolis Pt. 2: Scenes from a Memory'' (1999), and has been the sole producer of the band's albums released since ''A Dramatic Turn of Events'' (2011). Petrucci has also released two solo albums: ''Suspended Animation (John Petrucci album), Suspended Animation'' (2005) and ''Terminal Velocity (album), Terminal Velocity'' (2020). Early life and influences John Peter Petrucci was born on July 12, 1967, in Kings Park, New York, to an Italian American family. He picked up the guitar at around the age of eight because his older sister was allowed to go to bed later to practice the organ. However, he decided to quit the guitar when his attempts to stay up late were unsuccessful. He picked up the guitar ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dream Theater
Dream Theater is an American progressive metal band formed in 1985 in Boston, Massachusetts. The band comprises John Petrucci (guitar), John Myung (bass), Mike Portnoy (drums), James LaBrie (vocals) and Jordan Rudess (keyboards). Dream Theater was formed under the name Majesty by Petrucci, Myung and Portnoy—all natives of Long Island, New York (state), New York—while they attended Berklee College of Music. They dropped out to concentrate on the band. Petrucci and Myung have been the only two constant members. Portnoy remained until 2010, when he was replaced by Mike Mangini after deciding to leave to pursue other musical projects, before rejoining Dream Theater in October 2023. After a brief stint with Chris Collins, followed by Charlie Dominici (who was dismissed from Dream Theater shortly after the release of their 1989 debut album ''When Dream and Day Unite''), LaBrie was hired as the band's singer in 1991. Dream Theater's original keyboardist, Kevin Moore, left the ban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tone Stack
A tone stack is a specialized type of audio filter incorporated into the circuit of an audio amplifier to alter its frequency response. The term is primarily used in reference to instrument amplifiers such as guitar amplifiers. Guitars can produce sounds from 80Hz up to 10KHz, while guitar amps produce very little sound above around 5KHz. For discussion of tone controls, everything above 600Hz is considered to be in the treble band. Notes at 200Hz and below are in the bass range, while the sounds between 200Hz and 600Hz make up the middle band. Tone controls work by using adjustable band-pass filters to raise or lower the ''perceived'' volume of sounds in a specific range of frequencies (or ''band''). For example, the high-pass filter selectively lets frequencies in the treble band "pass" through the amp more easily than bass frequencies. A Bass control is a low-pass filter that produces the same effect over lower pitched sounds. Tone stacks vary in their complexity. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triode
A triode is an electronic amplifier, amplifying vacuum tube (or ''thermionic valve'' in British English) consisting of three electrodes inside an evacuated glass envelope: a heated Electrical filament, filament or cathode, a control grid, grid, and a Plate electrode, plate (anode). Developed from Lee De Forest's 1906 Audion, a partial vacuum tube that added a grid electrode to the thermionic diode (Fleming valve), the triode was the first practical electronic amplifier and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention helped make amplified radio technology and long-distance telephony possible. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today, their main remaining use is in high-power Radio frequency, RF amplifiers in Transmitter, radio transmitters and industrial RF heating devices. In recent years there has been a resurgence in demand for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentode
A pentode is an electronic device having five electrodes. The term most commonly applies to a three-grid amplifying vacuum tube or thermionic valve that was invented by Gilles Holst and Bernhard D.H. Tellegen in 1926. The pentode (called a ''triple-grid amplifier'' in some literature) was developed from the ''screen-grid tube'' or ''shield-grid tube'' (a type of tetrode tube) by the addition of a grid between the screen grid and the plate. The screen-grid tube was limited in performance as an amplifier due to secondary emission of electrons from the plate. The additional grid is called the ''suppressor grid''. The suppressor grid is usually operated at or near the potential of the cathode and prevents secondary emission electrons from the plate from reaching the screen grid. The addition of the suppressor grid permits much greater output signal amplitude to be obtained from the plate of the pentode in amplifier operation than from the plate of the screen-grid tube at the same plat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class AB Amplifier
In electronics, power amplifier classes are letter symbols applied to different Amplifier#Power_amplifiers, power amplifier types. The class gives a broad indication of an amplifier's Electrical efficiency, efficiency, linearity and other characteristics. Broadly, as you go up the alphabet, the amplifiers become more efficient but less linear, and the reduced linearity is dealt with through other means. The first classes, A, AB, B, and C, are related to the time period that the active amplifier device is passing current, expressed as a fraction of the period of a signal waveform applied to the input. This metric is known as conduction angle (\theta). A class-A amplifier is conducting through the entire period of the signal (\theta=360°); class-B only for one-half the input period (\theta=180°), class-C for much less than half the input period (\theta 180°); each one of the two active elements conducts more than half of the time. Class-AB is widely considered a good compromise f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fetron
The Fetron was a range of solid-state, plug-compatible replacements for vacuum tubes (valves). Fetrons were manufactured by Teledyne Semiconductor from 1967; primarily as a low-maintenance and low-power swap-in to replace vacuum tubes, which were becoming increasingly obsolete and difficult to source with the widespread use of solid-state electronics. They were used in large numbers in telephone exchanges. Vacuum tubes use significant amounts of power to maintain operating temperature, and large installations had substantial air-conditioning requirements; replacing them with fetrons was expected to reduce cooling and maintenance costs. A typical fetron consisted of a cascode configured pair of JFETs, some simple RC networks to control the device characteristics, and a fuse. The device was mounted in a metal tube with a base that has the same pin-out as the vacuum tube that it replaced. Use Fetrons were used to upgrade oscilloscopes and similar test equipment. They were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
