Description
GENERAL DESCRIPTION
The Peavey ten-band Stereo Graphic Equalizer consists of two independent graphic equalizer sections, each with continuously variable 12 dB per octave high and low cut filters.
The equalizer circuitry provides 15 dB of boost or cut at ten center frequencies which are as follows: 30 Hz, 60 Hz, 120 Hz, 250 Hz, 500 Hz. 1 kHz, 2 kHz, 4 kHz, 8 kHz, and 16 kHz. The low cut filter is adjustable from 20 Hz to 500 Hz, and the high cut filter is adjustable from 5 kHz to 30 kHz. These active filters have been optimized for minimum peaking and wide dynamic range operation.
The equalizer is impedance and level compatible with most commercial sound reinforcement, industrial, and consumer type equipment. The inputs include both low impedance XLR and high impedance ½" phone type connectors. All outputs have a source impedance of less than 600 Ohms with both balanced XLR and unbalanced 14" connections provided for ease of installation. Protection is provided at all inputs and outputs for accidental overvoltage and short circuit conditions. The power supply is extremely rugged using "state-of-the-art" voltage regulators which will provide a stable voltage source even under extreme power line variations.
The graphic equalizer's circuitry is designed for use under a wide range of input signal levels. The combination gain/attenuator level control provides 15 dB of boost or cut. This control allows level matching in almost any type of operating environment. A bypass switch allows the graphic and filter system to be removed from the circuit without disturbing the built-in level match system. The unit can be used as a high quality line amplifier providing more than +20 dBM into 600 Ohms at the balanced output.
INSTALLATION AND ADJUSTMENT
The Stereo Graphic Equalizer is designed to be mounted in a standard 19" rack. The unit must be secured by the use of four mounting screws for optimum mechanical stability. The equalizer does not generate any appreciable heat and is not adversely affected by externally generated fields from power transformers due to the unit being completely enclosed in a metal enclosure. For maximum reliability and useful service life, the unit should not be mounted directly over large tube type power amplifiers or other high operating temperature equipment. The heat developed by this type of equipment could degrade performance and shorten component lifetime.
