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The V610 Quick Start Guide
Input Level Control (Threshold)
PROPER SETUP OF THIS CONTROL WILL ALLOW FOR CONSISTENT AND REPEATABLE PERFORMANCE
The V610 compressor circuit is designed to operate levels of -40dBu or greater. The input level control allows for 2dB, incremented
adjustment to attain -40dBu level. As gain is increased beyond the -40dBu input level, resulting compression follows incrementally.
The amount of input level compression may be readily viewed on the V610. A separate LED gain reduction meter simultaneously
shows gain reduction. In gain reduction mode, the meter will deflect top to bottom, thus indicating the amount of gain reduction, in
dBu. Adjusting the input level will give a visual demonstration as to the relation of input gain versus gain reduction.
Note: Three, 10dB pad ranges allows for up to 30dB input pad. The line input has an additional 20dB of input pad.
The V610 is capable of signal levels 30dBu above the -40dBu input reference level, (-10dBu). Levels beyond this reference standard
may be easily attenuated with the input level control.
Independent Peak Limiting/Compression
A unique and important design feature of the V610 is to eliminate the "peak" transient information independent of the compression
function. Audio program peaks, as defined by Spectra Sonics over four decades ago, operate at frequencies well beyond 20 kilohertz
and contain no music program material. Conversely, conventional analog peak limiter circuits that operate in the 20-kilohertz range
will affect program material content in terms of frequency response, distortion and headroom.
In addition, the compression function on conventional analog compressors will be determined by peak content. The greater the
peak/average ratio, the greater the compression and loss of dynamic range and increase in system noise.
The V610 eliminates the peaks and allows for improved dynamic range and system noise by increased compressor gain.
Peak Limiting Only
For maximum dynamic range, and no compression, this configuration is required:
-Set the input level whereby the "threshold" LED occasionally flashes. The "threshold" LED should not be illuminated on a constant
basis. This setting indicates at peaks only. The "threshold" circuit is like no other in the industry and operates an extremely high
frequency similar to an oscilloscope.