Glossary
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11 definitions for A
AAD : This means the music was recorded and mastered in Analogue but stored Digitally (on the CD, for example).
Active Hi-Fi System : In an active system an electronic crossover divides the audio spectrum into two or three separate frequency bands, depending on the loudspeaker type employed. The crossover is connected between the pre-amplifier and power amplifiers. Each power amplifier is then connected directly to the appropriate loudspeaker drive unit, and only handles one frequency band. In a 2 way speaker, you would have 2 power amps; in a 3 way speaker you would have 3 power amps. This allows better control of the drive unit resulting in more accurate music reproduction. As there is no passive crossover no amplifier power is wasted and information loss is minimised. The great potential possessed by an active system demands not only source components of the very highest quality but also for them to be perfectly matched and installed.
Active System : An active system is a term not really used as far as i know... because "Active" means "it has an amp built in", so to have active speakers it means each speaker has an amplifier built into it, which either means they run on batteries, or plug into a power socket. This is an advantage for small systems because you don't require a high-powered amplifier connected. To have an "active system" however, must mean that the speaker components of a larger system are active, because the only other part to contain an amp should be the amplifier itself!
ADD : Music was recorded in Analogue form, and then mastered and stored Digitally (on a CD, for example).
Alignment : This is the adjustment of a turntable cartridge, relative to the groove on the vinyl. If the alignment is bad, it can cause distortion and bad sound quality.
Amplifier : Makes the signal stronger, to drive loudspeakers. Amplifiers can either be integrated (a single box), or can be made up from a pre-amp and a power-amp.
Analog : This is instead of digital. Analog is a way of storing or sending audio information. Analog can have a *perfect* quality, and supports all possible frequencies. However, it is prone to signal loss, whereas digital is not.
Anamorphic : If a DVD has been anamorphically enhanced, it offers an improved picture quality on widescreen TV sets, and makes letterbox effect obsolete.
Anti-skating : Anti-skating can be applied to turntable arms to counteract the swerving in towards the centre of the disc that sometimes occurs.
Arm-Lifter : Handle or button to lift the tonearm of a turntable to prevent skidding or damaging the vinyl while moving the needle above it.
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