575S

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. Used . . Used .

Achromatic - A lens arrangement designed to decrease chromatic aberration, for example: to set the same focal length for red and blue light at the focal plane. Also, a color having no chroma as in black, white and. Used . grays created by mixing black and white instead of other colors that are made of chromatic pigments.. Used . ...

Motors - Motors are any electrical or mechanical device used to power lifts that aid the ground support crew in placing gear up onto stages or trusses.. Used . . Used . ...

A1 - A1 is Lighting Industry Forum code for lamps that are origianally recommended for projection.

Here are all the codes:

CP: Film, Television &Photographic studio (3200K)
. Used . A1: Projection
T: Theatre (3000K)
P2: Photoflood (3200K)
K: General Purpose Flood Lighting (2850K) . Used . ...

Zoom Lens - A mechanical assembly of lens elements with the capability to vary its focal length allowing for a closer or farther view of a subject, without changing perspective. Zoom lenses are often described b. Used . y the ratio of their focal lengths from longest to shortest. A 100mm to 400mm zoom may be described as a 4:1 or 4× zoom.

. Used . ...

Active - A active circuit works with an external power supply and usually at low power. A passive circuit operates directly on a signal using the power coming from the surrounding circuitry.
This is the . Used . reason why an active crossover is, for the most part, placed before amps, containing integrated circuits (and line level signal processing). On the other hand a passive crossover is placed . Used . after amplifiers where power levels are much larger . ...