High Voltage Audio EQ-6S User Manual

EQ-6S

6-BAND STEREO EQUALIZER

USER GUIDE

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A U D I O

WWW.HIGHVOLTAGEAUDIO.NET

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F CAUTION: HIGHgVOLTAGE !

RISK OF ELECTRIC SHOCK

!! WARNING !!

SET AC VOLTAGE SELECTION INSIDE BEFORE USE

HEALTH AND SAFETY

- Always read these complete instructions before operating the equipment.

- Always use a properly grounded IEC cable with this equipment and never defeat the
grounding pin as this provides not only a safety ground but is required for low noise
operation.

- Avoid using this equipment around stray magnetic fields. The enclosure is designed to
shield the circuits from magnetic fields and radio interference and so during racking of
the equipment it’s important to ensure typical grounding procedures are followed.

- Avoid the use of the equipment in high temperature environments as this can degrade
the performance and reduce the lifetime of the internal components.

- There are some internally accessible adjustments in this equipment. If there is a
requirement to perform internal adjustments, please ensure one is comfortable with
opening the equipment and performing said adjustments. Please seek qualified
assistance if unsure.

- If adjustments are to be made to this equipment, please disconnect the equipment from
mains power prior to opening the equipment and performing the adjustment. While we
understand that some adjustments are to be made with the equipment live, any damage
to the equipment as a result of dropped metal objects or liquid damage will not be covered
by the warranty.

HIGH VOLTAGE AUDIO reserves the right to change the specifications or modify the designs of
its equipment. Company contact information is on the last page of this manual.

VOLTAGE SELECTION AND FUSE

This equipment is capable of operating over a range of mains voltages to cater for various
regions. Please ensure the correct mains voltage setting and correct fuse are used prior to
connecting the equipment to mains. To avoid the risk of fire, replace the mains fuse only with
the correct value.

For mains voltages from 100-120 VAC, use a T200mAL (M205 SLO-BLO only) and configure the
internal mains voltage selector to display 115V. For mains voltages from 200-240 VAC, use a
T100mAL (M205 SLO-BLO only) and configure the internal mains voltage selector to display
230V.

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THANK YOU FOR CHOOSING

HIGHgVOLTAGE

A U D I O

Thank you for choosing products from HIGH VOLTAGE AUDIO. We expect you will be satisfied
with the quality, performance and value of our products, which are made possible through careful
design and construction choices.

ABOUT HIGH VOLTAGE AUDIO

HIGH VOLTAGE AUDIO is a partnership based in Australia, working out of both Melbourne and
Perth. We go to every effort to accurately create the tone, feel and functionality of great outboard
gear. Our work is the culmination of years of experience in sound production and electronics.
Our products are built here in Australia, so our customers can have the confidence that they will
purchase a product that not only sounds great, but is dependable, reliable and easy to use.

In 2017, we shipped our acclaimed bus compressors all over Australia, and all over the globe.

In 2018, we are proud to begin the year by launching our first equalizer product offering, in the
form of the HIGH VOLTAGE AUDIO EQ-6S - a mastering grade six (6) band stereo equalizer.

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OVERVIEW

The HIGH VOLTAGE AUDIO EQ-6S is a six (6) band, mastering grade stereo equalizer. With its
precision built stepped rotary switches, at 0.5 dB steps for a total +/- 5.5 dB range, the EQ-6S
provides perfect stereo tracking and ease of recall.

The EQ-6S equalizer is a broad-stroke, sound sculpting device with five (5) fixed frequency bands
and a frequency switchable, high shelf PRESENCE FILTER.

Unlike the majority of equalizers on the market, the EQ-6S is a dedicated stereo equalizer. With
one set of controls under the hood, the EQ-6S is incredibly quick and easy to dial in.

Compared to its rivals, the EQ-6S boasts unrivaled control, precision, noise performance and
value. The EQ-6S is capable of broad, colourful EQ sculpting, perfect for adding character as well
as high end sparkle to mixes.

LETS GET TECHNICAL

Each of the EQ-6S filter bands are built around non-inverting gain stages sitting between 6
dB/Octave high and low pass filters. The filters are designed to be four times the previous band
and the signal exits the previous band at a drop of -6 dB. The signal then flows into the following
stage to add back up to 0 dB.

Since non-inverting gain stages have a positive voltage gain, the EQ-6S’s bands all interact with
one another to an extent. When increasing the gain of the

PRESENCE FILTER

, there will be an

overall increase in gain across the whole frequency response.