The Sebatron Spider EQ is a high quality Two Channel Class A
Transformerless Valve Equalizer housed in a 2U rack chassis designed for
tracking, mixing or mastering purposes.
Both channels of the Spider EQ feature upper and lower shelf bands
each with two selectable frequencies and two mid bell bands each with
four selectable frequencies to suit your audio equalization requirements.
Each band has up to 10db of boost or cut.
The Spider signal path uses optimised discrete op amps with high
voltage transistors as input and output buffering stages. A dual-triode valve
( or Vacuum Tube ) supplies the processing gain for the equalizer circuit.
All circuitry is Class A and operated in single ended mode to provide
maximum musicality with absolutely no cross-over distortion. The high
voltage supply rails ensure massive headroom for boosts or cuts and
minimize the possibility of noise and distortion. The bypass is relay driven
to guarantee no signal colouration when the unit is switched out of the
signal path.
Visual signal monitoring for the audio signals is provided by two
back-lit VU meters for accuracy and ease. The meters have a +4db or
+8db switchable operating point to aid with the monitoring of heavier
signals without slamming the meter.
In use the Spider is an incredibly useful tool as it enhances almost
any source material that is put through it. The extra harmonics generated
within the valve give the signal increased width, depth and definition.
It can take an ordinary sounding mix to a new level by taming the
frequencies that need to be tamed and pushing the frequencies that matter
the most.
1. Introduction
