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628 Digital Voice Processor

128 processing presets

Plug & Play operation with 8 factory presets

Precise parameter adjustment with rotary knobs
The 628 rolls a premium quality microphone preamplifier, 20 bit A/D and D/A converters, de-esser, expander/gate, compressor and parametric equalizer into a single rack space unit. Perfect for any voice and many other instruments or sounds the 628 combines proven digital signal processing and an easy to use analog-like interface with the power of factory and user programmable presets.

Top notch voice professionals now demand personalized signal processing. The Symetrix 628 gives you the ability to create and store in memory 119 custom presets. You can get on the air instantly by selecting from 8 finely tuned factory presets.

The 581E Distribution Amplifier (4x4) is a four-input, sixteen-output distribution amplifier. In a typical configuration the 581E accepts four input signals and distributes each input to four independent outputs. The attenuation of each of the sixteen outputs may be individually trimmed via its front panel potentiometer. Similarly, the level of each of the four inputs may be independently controlled. Associated with each input is a four LED level meter to assist the user in setting optimum operating levels. The 581E operates from an internal power supply built around a low magnetic field toroidal transformer, resulting in a very low noise, high performance product.

Superior fidelity, flexibility, power, and precision. That's what sets the 552E Dual Five Band Parametric Equalizer apart from the rest. Delivering an unbeatable combination of wide dynamic range, ultra-low distortion, minimal phase shift and ringing, easy to use controls, and rock-solid construction in a 2U dual channel package, the 552E is leap forward in equalizer technology.

The two separate channel of five fully parametric EQ bands are identical in function. Each band delivers up to 12 dB of boost and 20 dB of cut, has an adjustable bandwidth control (from .05 octaves to 2 octaves), and a frequency control range from 10 Hz to 20 kHz. Use each band anywhere in the audio spectrum, not just the pre-selected ranges you find on most equalizers. This can be very useful in sound system work, among other things. For instance, you can use three bands to correct low frequency problems and still have two bands left for midrange and high frequency work

Superior fidelity, flexibility, power, and precision. That's what sets the 551E Five Band Parametric Equalizer apart from the rest. Delivering an unbeatable combination of wide dynamic range, ultra-low distortion, minimal phase shift and ringing, easy to use controls, and rock-solid construction, the 551E is leap forward in equalizer technology.

The five, fully parametric EQ bands are identical in function. Each delivers up to 12 dB of boost and 20 dB of cut, has an adjustable bandwidth control (from .05 octaves to 2 octaves), and a frequency control range from 10 Hz to 20 kHz. Use each band anywhere in the audio spectrum, not just the pre-selected ranges you find on most equalizers. This can be very useful in sound system work, among other things. For instance, you can use three bands to correct low frequency problems and still have two bands left for midrange and high frequency work

the 532E is a purist's dream - audiophile sound quality, an uncluttered control surface, and rugged reliability in one package. It has thirty-one filter bands per channel on ISO 1/3rd-octave centers. Through the use of a global range switch, each band delivers either +/- 6dB or +/- 12dB of cut or boost. The grounded center detent position on each band serves as an on/off switch that completely removes that band from the audio signal path. In addition, they sport 12dB per octave High Cut and Low Cut filters. Each has a sweepable cutoff frequency and a control range that extends well into the sub/ultrasonic.

the 531E Graphic Equalizer - as high quality alternative to the mediocre "affordable" equalizers available today.
In fact, the 531E is a purist's dream - audiophile sound quality, an uncluttered control surface, and rugged reliability in one package. It has thirty-one filter bands on ISO 1/3rd-octave centers. Through the use of a global range switch, each band delivers either +/- 6dB or +/- 12dB of cut or boost. The grounded center detent position on each band serves as an on/off switch that completely removes that band from the audio signal path. In addition, they sport 12dB per octave High Cut and Low Cut filters. Each has a sweepable cutoff frequency and a control range that extends well into the sub/ultrasonic.

The 528E is a complete, self-contained voice processor that performs six separate functions: microphone preamplification, de-essing (sibilance removal), compression/limiting, downward expansion, parametric EQ, and voice symmetry alignment. All six processors may be used simultaneously. Although we call the 528E a "Voice Processor", it is perfectly suitable for any signal, vocal or not.

Each function features a full complement of controls in an easy-to-use layout. Separate LED meters monitor mic gain and dynamics gain reduction functions thus facilitating quick and accurate adjustment of controls.

As a dedicated single-channel voice processor, the 528E delivers the same processing power found in an entire recording studio signal chain. With the 528E you get all the control you need, without the cost or complication of separate units.

460 A/V presentation systems require flexible routing and mixing of various audio sources plus easy control of source selection and output levels. The lack of affordable mixers with the required functions frequently turns audio signal management into a problem. Presentation mixers need to provide separate speech and program equalization, dynamics processing, routings, and levels. They also need to interface easily with the popular remote control systems on the market.

The 460 Presentation Audio Mixer offers all of these features. Use the 460 to process speech separately from program audio, combine multiple audio sources, control everything remotely, and configure it through simple front-panel step-through menus.

The 450 satisfies the requirements for paging mic and mono/stereo line mixing in clubs, restaurants, hotels, conference facilities, houses of worship or anywhere multiple audio inputs must be combined and distributed. The compact one rack space mixer accepts two mono mic/line inputs (with +48V phantom power and low frequency filters) and four stereo line inputs.

Each input may be assigned to a stereo output zone, a mono output zone or both. A unique hierarchical priority structure permits both mic/line inputs and the first stereo line input to have priority over the other inputs assigned to the same zone.

The 422 STEREO AGC-LEVELER is a stereo automatic gain controller. In addition to the AGC function the 422 performs peak limiting. Use the 422 to create constant audio levels and increase intelligibility in broadcast, music mixdown, and foreground/background music applications.

While the 422 AGC-LEVELER is a sophisticated audio gain controller, what it does is very simple: it makes quiet sounds louder and loud sounds quieter. You set the 'target' output level to the desired point and the 422 gently boosts signals that drop below your target, and smoothly pulls back those that rise above it.

The 422 may be used in virtually any type of sound system for processing just about any kind of audio. Insert the 422 at a convenient patch point where you have line level signals and you're ready to go

A two-channel power amplifier for use in professional and commercial audio systems. Use the 420 to power small reference speakers, paging speakers, or single or multiple pairs of headphones. It operates in stereo mode at 20 watts (RMS) per channel, or as a single channel mono 40 watt amplifier.
In recording and broadcast studios the 420 makes an ideal headphone amplifier. In television and video post studios the 420's low stray field emissions allow it to be racked next to a wide variety of audio and video equipment without magnetic field interference

302 Dual Microphone Preamplifier

Polarity reversal switches and 15dB pads on both channels.
DESIGNED FOR BROADCAST, SOUND REINFORCEMENT, and digital and analog recording. Offering substantial sonic improvements over stock mixer or console preamps, the 302 has solid stereo imaging, excellent transient response, very low noise, and almost undetectable distortion.

+48 volt phantom power

Gain variable from 20-60dB, works with virtually any professional microphone.