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VP 12

Vocal Processor

Target Markets

The primary market for the VP 12

is broadcast facilities that require

vocal processing for on-air and

production studio microphones.

The secondary markets are any

type of studio doing vocal record-

ing (including voice-overs and

ADR (additional dialog replace-

ment) for film and video). The

third market is live sound, in-

cluding installed systems in

churches, auditoriums, board

rooms and other systems requir-

ing precise vocal microphone

control.

Design

The VP12 is a single input, two

output vocal processor. The unit

features switchable microphone

and line level inputs, de-esser,

gate/expander, compressor and

equalization with parametric and

cut filters.

Introduction

The VP12 is a full featured vocal

processor offering a plethora of

processing functions for micro-

phone control. This unit offers

more precise control at a price

well below any comparable

product of it’s kind, while main-

taining superior audio quality.

Features & Benefits

Summary of content (8 pages)

PAGE 1
VP 12 Vocal Processor Features & Benefits Introduction Design Target Markets The VP12 is a full featured vocal processor offering a plethora of processing functions for microphone control. This unit offers more precise control at a price well below any comparable product of it’s kind, while maintaining superior audio quality. The VP12 is a single input, two output vocal processor.
PAGE 2
Input Section Front Panel INPUT GAIN control This control adjusts microphone input level. Set this to make the OL (Overload) LED flash occasionally. If the OL LED is on constantly, the level is too high—no illumination means the level is too low. It’s important to have this gain stage set up properly to maintain the best signal-to-noise ratio. LINE/BOTH/MIC switch This three position switch allows selection of which rear panel input is active: line, mic, or a sum of both inputs.
PAGE 3
Cut Filters De-esser DE-ESS THRESHOLD HI CUT FILTER This control rolls the high frequencies off at a rate of 12 dB per octave. The frequency designator (3 kHz to 40 kHz) is the corner frequency at which the high end starts to roll off. Turned all the way clockwise, the high cut filter is essentially out of the circuit. DE-ESS FREQUENCY This control selects the upper range of frequencies that the deesser circuit responds to.
PAGE 4
What is De-Essing? In a nutshell, de-essing is nothing more than attenuation at specific frequencies. Sibilance (that annoying hissssing of “ess” sounds that exhibits itself in some peoples’ speech) manifests itself as an increased level, normally in the 3.5 kHz range. However, this frequency may vary from individual to individual, hence the de-esser frequency adjustment on the VP 12.
PAGE 5
Gate/Expander & Compressor COMPRESSOR RATIO This control sets the point above which the gain is held in check. The associated red LED indicates when the threshold has been reached. Determines by how much the gain is held in check. Remember, higher ratios mean the compressor works harder, essentially turning it into a limiter. Ratios are expressed in X:1. A 1:1 ratio is no gain reduction, like being bypassed.
PAGE 6
Parametric Equalizers FREQUENCY control BW control This selects the specific center frequency to be affected. This control works along with the select switch below it to provide full audio spectrum frequency range for each band. This allows between +12 dB of boost and -15 dB of cut at the center frequency. BW stands for “bandwidth”. This allows selection of a skirt as narrow as .03 octave (feedback control) or as wide as 2.0 octaves (broad tonal shaping) around the center frequency.
PAGE 7
Output Section Front Panel MAIN & AUX output meters MAIN & AUX OUTPUT LEVEL controls These six segment meters show the output levels. Note: If the rear panel MAIN OUT LEVEL is switched to MIC, the meter is no longer in dBu, but gives visual indication of available headroom. This is a concentric rotary pot. The small diameter capped knob controls the main output, while the large diameter knob controls the aux output.
PAGE 8
Screw Terminal Patch Strip This strip is configured from the factory with all functions operational in the same left-to-right order as the front panel. Factory jumper locations are indicated by the arrows. This strip allows reconfiguring the order of processing functions and/or wiring around unwanted functions. The SIDE CHAIN PATCH allows the insertion of external processing. Features and Benefits: Feature: Line/Both/Mic Switch Benefit: Allows summing of both mic and line inputs.