Thursday, February 16, 2012

Output transformer distortion

The achievement agent sits amid the ability valves and the speaker, confined to bout impedance. When a transformer's ferromagnetic amount becomes electromagnetically saturated, it will blow symmetrically. This adds added odd-order baloney to the arresting delivered to the speakers.

edit Ability accumulation "sag"

Early valve amplifiers acclimated able ability supplies. This was due to the top amount associated with high-quality high-voltage ability supplies. The archetypal anode accumulation was artlessly a rectifier, an inductor and a capacitor. When the valve amplifier was operated at top volume, the ability accumulation voltage would dip, abbreviation ability achievement and causing arresting abrasion and compression. This dipping aftereffect is accepted as "sag", and is approved by some electric guitarists.38 Sag alone occurs in Class AB amplifiers. This is because, technically, sag after-effects from added accepted getting fatigued from the ability supply, causing a greater voltage bead over the rectifier valve. In a Class A amplifier, accepted draw is constant, so sag does not occur.

As this aftereffect is added arresting with college ascribe signals, the harder "attack" of a agenda will be aeroembolism added heavily than the lower-voltage "decay", authoritative the closing assume louder and thereby convalescent sustain. Additionally, because the akin of compression is afflicted by ascribe volume, the amateur can ascendancy it via their arena intensity: arena harder after-effects in added compression or "sag". In contrast, avant-garde amplifiers generally use high-quality, adapted ability supplies.

edit Apostle distortion

Guitar loudspeakers are advised abnormally from top allegiance stereo speakers or PA arrangement speakers. While hi-fi and PA speakers are advised to carbon the complete with as little baloney as possible, guitar speakers are usually advised so that they will appearance or colour the accent of the guitar, either by acceptable some frequencies or attenuating exceptionable frequencies.citation needed

When the ability delivered to a guitar apostle approaches its best rated power, the speaker's achievement degrades, causing the apostle to "break up", abacus added baloney and colouration to the signal. Some speakers are advised to accept lots of apple-pie headroom, while others are advised to breach up aboriginal to bear dust and growl.

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