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Topic: Instrument amplifier

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	Amplifier - Wikipedia, the free encyclopedia
		The relationship of the input to the output of an amplifier — usually expressed as a function of the input frequency — is called the transfer function of the amplifier, and the magnitude of the transfer function is termed the gain.
		One common type of amplifier is the electronic amplifier, commonly used in radio and television transmitters and receivers, high-fidelity ("hi-fi") stereo equipment, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers.
		Amplifiers are commonly classified by the conduction angle (sometimes known as 'angle of flow') of the input signal through the amplifying device; see electronic amplifier.
	en.wikipedia.org /wiki/Amplifier (1852 words)

	Instrument amplifier - Wikipedia, the free encyclopedia
		Despite the drawbacks of vacuum tube amplifiers, such as their heavy weight and higher likelihood of breakdown, some musicians prefer the "vintage" sound of vacuum tube amplifiers, particularly in the genres of blues and rock.
		In the 1960s and 1970s, high output power amplifiers were preferred for instrument amplifiers, especially for large concerts, because public address systems were generally only used to amplify the vocals.
		The switch to smaller instrument amplifiers makes it easier for musicians to transport their equipment to performances; as well, it makes concert stage mangement easier at large clubs and festivals where several bands are performing in sequence.
	en.wikipedia.org /wiki/Instrument_amplifier (2460 words)

	Guitars: Glossary
		An instrument amplifier is an electronic amplifier designed for use with an electric or electronic musical instrument, such as an electric guitar or electric piano/keyboard.
		On string instruments, the mute is usually a small three-prong rubber or felt implement that attaches to the top of the bridge with one prong between each pair of strings.
		In stringed instruments such as guitar, bass, banjo, etc. scale length is the distance from the nut to the bridge or saddle; basically, the total length of the vibrating portion of the string.
	www.sweetwater.com /shop/guitars/glossary.php (13032 words)

	Basics of Tube Amps for Beginners (Site not responding. Last check: 2007-11-07)
		Musical instrument amplifiers are fundamentally different from hifi or stereo amplifiers.
		Musical instrument amplifiers on the other hand have always had limitations, distortions, and coloration that musicians have exploited to make their music more expressive.
		A musical instrument amplifier is properly viewed as an extension of the guitar, bass, harmonica, etc. that is plugged into it, not merely something to make the instrument louder.
	www.geofex.com /tubeampfaq/beginner_tube_amps.htm (624 words)

	MATCHLESS C-30
		If your experience is limited with regard to vacuum tube instruments amplifiers, you should become familiar with the characteristics that differentiate vacuum tube designs from their solid-state counterparts… Aside from the tone or sonic performance.
		The amplifier on status is indicated by the illumination of the “MATCHLESS”; logo on the front of the amplifier.
		As a rule, older instruments usually have lower output strength and may sound punchier through the input with more gain (input 1), while instruments with newer style pickups that may be much hotter, may perform satisfactory with less gain (input 2), and improve the headroom of the amplifier.
	www.matchlessamplifiers.com /c30manual.htm (4086 words)

	Amplifiers - CANBERRA, An AREVA Group Company
		Ultimately, it is the amplifier whose gain range, shaping time constants, low-noise design and other characteristics, must be well chosen for the particular type of detector being used, and the application being addressed.
		Some amplifiers are designed to be sufficiently flexible to handle a variety of measurement conditions, while others are tailored to optimize a specific measurement.
		The amplifier offers six front panel switch-selectable shaping time constants which effectively doubles to 12 when the choice of Gaussian and Triangular are both considered, allowing optimum matching for most detector and count rate requirements.
	www.canberra.com /products/645.asp (1723 words)

	Amplifier for a guitar or other musical instrument (US6111961)
		A musician's amplifier that produces an overdriven amplifier sound at any desired listening level by including an output section complete with audio power devices and a high-wattage dummy load in the pre-amplifier section of the amplifier.
		The audio power devices are overdriven to taste, and the results are then fed into a power amplifier section of the amplifier using a master volume control to set the desired listening level.
		With this arrangement, the musician is able to accurately produce both overdriven and undistorted amplifier tones at many different listening levels with a single amplifier.
	www.delphion.com /details?&pn10=US06111961 (261 words)

	Moog Archives (Site not responding. Last check: 2007-11-07)
		The instrument may be set against a wall or on a shelf so that its controls are readily accessible, but power and signal cords are out of sight.
		Amplifier chassis, loudspeaker, and rechargeable battery of PMS-15 are housed in an attractive molded enclosure.
		To make possible a high-quality high fidelity amplifier which may be conveniently carried and operated independently of conventional power sources, new design concepts are employed.
	www.moogarchives.com /pms.htm (309 words)

	Instrument Amplifiers and Instrument Amplifier
		The Maury MT868C/F is a packaged, broad band, microwave amplifier followed by a double sideband mixer which provides low noise amplification of signals in the 1.8 to 18.0 GHz frequency range and down-conversion of these signals to a fixed intermediate frequency.
		Designed to condition, amplify and filter low level analog signals it is used for data acquisition, analog recording, line and galvanometer driving, data filtering and signal isolation.
		The instrument is also equipped with ample overload protection in the voltage ranges thanks to generously dimensioned, high performance PTC thermistors.
	www.etesters.com /search/product/listAll.cfm/keyword/Instrument_Amplifiers (450 words)

	Musical Instrument Amplification
		IN THE STUDIO and on stage, instrument amplifiers are vitally important to the musician.
		An overdriven amplifier may reduce this ratio to 2:1 (3 dB) or less, and as a result the average power is higher.
		It is not, or should not, be an extension of the instrument because of the number of different instruments which must be accommodated.
	sound.westhost.com /instamps.htm (3979 words)

	Dual mode music instrument amplifier (US4211893)
		An electronic amplifying apparatus intended for electric music instruments (primarily guitar), with switchable circuitry offering an improved, specialized circuit for the enhancement of solo playing in addition to customary simple amplification.
		Switching and control circuitry enable the musician to return to a conventional amplified tone which would be preferred for rhythm (or chordal) playing.
		An electronic amplifier for audio frequency electrical signals generated by a musical instrument such as a guitar including a plurality of preamplifier stages operating in substantially the linear mode and providing a high amplitude signal output from the final pre-amplifier stage,
	www.delphion.com /details?pn=US04211893__ (280 words)

	Home - Instrument Store,music instrument store, electric guitar, guitar center (Site not responding. Last check: 2007-11-07)
		After the instrument is recorded, the machine can be returned to its original track speed with everything in tune.
		We recommend the use of a hygrometer/thermometer to measure the relative humidity and temperature surrounding your guitar.
		Amplifying the acoustic guitar has been an ongoing dilemma for both manufacturers and producers and players alike.
	justinstrument.com (2317 words)

	Reamp Reviews
		Essentially, REAMP is a properly impedance-matched interface between the tape recorder and the instrument amplifier.
		You don't have to limit the REAMP to guitars, as any instrument recorded on tape could be played back in the studio during mixdown or re-recorded back to tape for that live feel.
		Musicians are discovering the creative possibilities of running synthesizers, drum machines, and even vocals through amplifiers; REAMP saves you from having to commit to a sound during recording, as you can take a track at any time and "reamp" it.
	www.reamp.com /reviews (1405 words)

	"Li'l 4x4" Tube Amplifier
		I use mine primarily as an instrument amplifier for electric guitar, giving a clean, rich sound for practise and solo performance purposes.
		This article details my quest for the "perfect" low-power instrument amplifier, and includes a side-by-side comparison with an authentic classic design using similar components.
		A new addition (July 2001) is a very simple yet effective compressor option, intended mainly for use with electric guitars.
	www.dogstar.dantimax.dk /tubestuf/4x4index.htm (337 words)

	Speaker Terms
		While some are standard terms used in the design and manufacture of loudspeakers, the rest are subjective terms traditionally used by musicians to describe the overall sound of a particular loudspeaker and are generally related to its frequency response and its inherent anomalies that occur at high volumes.
		Because it is always curving from the apex to the surround, it presents a high mechanical resistance to the bell modes and prevents them from occurring.
		With a typical guitar amp, although you always use the correct speaker impedance load as suggested by the manufacturer, as an AC signal power amplifier, or simply, an AC power supply, it has an internal source impedance that is lower than the impedance rating of the speaker connected to it.
	www.webervst.com /spterm.html (8312 words)

	Guitar Amplifier Books
		This is a great collection of books for the amateur or professional musician, technician, hobbyist or those curious about musical instrument amplifiers and how they work.
		Contains three sections-'How Guitar Amplifiers Work,' 'Service Procedures and Techniques,' and 'Commercial Instrument Amplifiers.' Everything you need to know about how each part of the amp works and what to do about it if it doesn't work.
		The final section of the Handbook is full of schematics for many of the guitar amplifiers in use at the time including models from Ampeg, Bogen, Baldwin, Fender, Gibson, Gretsch, and others.
	www.evatco.com.au /books2.htm (1094 words)

	Buffalo Brothers Guitars - Amplifiers
		The G-DEC is an ideal amplifier system for beginning guitarists who can easily learn to play in time and have fun from day one, and is great for the experienced musician as a song writing tool or just a fun practice amp that will keep you playing longer and more frequently.
		A single input is switchable for passive and active instruments with a blend of solid state and dual triode tube preamps stages which can be preset and selected by footswitch, providing access to a massive range of clean, warm and overdriven tones.
		Inputs are provided for active and passive instruments and the front panel also features an effects send and return, a tuner/line output and a balanced DI output for direct connection to a mixing console.
	www.buffalobrosguitars.com /amplifiers.html (7297 words)

	Stereophile: Editor's Choice: Stereophile's Sampler & Test CD
		I ran off a couple of riffs, recording the instrument's output in mono in three different ways: taking a direct feed from the instrument; taking a tap from the Fender Bassman amplifier's output terminals; and, as a check, miking the speaker cabinet.
		The second version was the one that ended up on the CD, the amplifier's tone controls being used to add a degree of treble bite to the sound and boosting the level of the instrument's bottom octave but not otherwise significantly changing its fundamental character.
		It is important for a hi-fi system to be able to pass along intact the harmonics of recorded sounds with the ratio of their levels, which corresponds to the "timbre" of the sound.
	www.stereophile.com /musicrecordings/853/index1.html (513 words)

	Tube Amp Books & More by Kevin O'Connor
		Approaches to audio design in the musical instrument field are very restricted - a limitation that the M.I. industry imposes upon itself through complacency and lack of imagination.
		This volume is essential for understanding design procedures for power supplies that are fixed or variable, and for power amplifiers of tube, solid-state and hybrid technology.
		Projects for musical instrument use are presented, including tube and solid-state power amps, tube bass and guitar preamps, tube reverb, solid-state tremolo and a bench supply to conduct tube-based experiments.
	www.londonpower.com /books.htm (1125 words)

	ART dPDB at Performance Audio Online!
		It is a rock solid, roadworthy DI for connection of the outputs of electronic musical instruments (or other audio sources) to the balanced inputs of mixer consoles and other balanced inputs.
		It also allows connection of a music source to an instrument amplifier while simultaneously patching it to a mixer.
		Simply send the output of the instrument amplifier to the dPDB and then to the console (instead of a separate DI box for each keyboard).
	www.performanceaudio.com /cgi/pages.cgi?buildPage=item&ProductID=004413 (433 words)

	ViolinsEtc.com: Product: 'Coda Acoustic Instrument Amplifier Coda (Model 410 AA)'
		The Coda integrated amp and loudspeaker system was designed to accurately reproduce the sound of all acoustic and electric instruments without the size and weight that has traditionally be associated with high quality amplification.
		Its omnidirectional output of frequencies below 800 Hz allows instruments amplified by the Coda to be easily heard by other musicians across the bandstand.
		These include a two-channel preamp (mic and instrument), a parallel effects loop in each channel with a return level control, a selectable notch or high pass filter for feedback or “boominess” elimination and a balanced direct out with ground lift to allow connection to a mixing board for PA augmentation or recording.
	www.violinsetc.com /violinsetc/product.asp?dept_id=700&pf_id=AcImage04 (504 words)

	TD-1 (tm) "Half Rack" Recording System - Millennia Media (Site not responding. Last check: 2007-11-07)
		TD-1 offers a high voltage 100% vacuum tube instrument amplifier -or- transparent 100% discrete F.E.T. solid state instrument amplifier in the same indestructable military-grade chassis.
		REAMP causes the guitar amplifier to think it's connected to a high impedance passive guitar pickup, instead of a very low impedance (and much too clean) active tape recorder or digital workstation output.
		Ultra-transparent NSEQ bands are provided for high-resolution audio sculpting of instruments such as guitars, bass, and keyboards, or artistic and corrective work ~ adding "air" and "punch," removing "mud," and so forth ~ all with the smooth and artifact-free audio qualities for which NSEQ is well respected.
	www.mil-media.com /docs/products/td1.shtml (1045 words)

	Folkway Music -- Instrument Sales - Amplifiers & Pedals
		Built in July 1965 and labeled "Fender Electric Instrument Co." with transformers and pots dated early 1965, this is a late pre-CBS head.
		A great sounding amplifier with good transparency, a flat EQ curve and minimal coloration for acoustic instruments.
		There have been no modifications to this amplifier with the exception of a few tubes, and it sounds fantastic.
	www.folkwaymusic.com /instruments/amps.html (987 words)

	Reamp Applications
		Change amplifier make, tone settings, and effects at any time after original performance.
		After the repairs are done, REAMP to any amplifier instead of re-recording the entire performance.
		No need to record instrument amps during a tracking session if space or leakage is a problem; perfect for late night home recording.
	www.reamp.com /applications.html (376 words)

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