E Series EQ Modulefor 500 Series Racks

User Guide-1-

Safety and Installation Considerations
This page contains definitions, warnings, and practical information to ensure a safe
working environment. Please take time to read this page before installing or using thisapparatus.

General Safety•

Read these instructions.

•

Keep these instructions.

•

Heed all warnings.

•

Follow all instructions.

•

Do not use this apparatus near water.

•Do not expose this apparatus to rain or moisture.

•Clean only with dry cloth.

•

Do not block any ventilation openings.

•Install in accordance with the rack manufacturer’s instructions.

•There are no user-adjustments, or user-servicable items, on this apparatus.

•Adjustments or alterations to this apparatus may affect the performance suchthat safety and/or international compliance standards may no longer be met.

•This apparatus is not to be used in safety critical applications

Caution•This apparatus should not be used outside of the scope of API 500 series
compatible racks.

•

Do not operate this apparatus with any covers removed.

•To reduce the risk of electric shock, do not perform any servicing other than thatcontained in these Installation Instructions unless you are qualified to do so. Refer
all servicing to qualified service personnel.

Installation•Ensure power is removed from the rack before fitting or removing this apparatus toor from the rack.

•Use the panel fixing screws supplied with the rack to secure this apparatus into therack.

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Standards ComplianceThis apparatus is designed to be installed and used in API
500 series compatible racks which are CE marked. The CE
mark on a rack is indicative that the manufacturer confirmsthat it meets both EMC and the Low Voltage Directive(2006/95/EC).

Instructions for Disposal of WEEE by Users in theEuropean Union
The symbol shown here is on the product or on its
packaging, which indicates that this product must not
be disposed of with other waste. Instead, it is the user’s
responsibility to dispose of their waste equipment byhanding it over to a designated collection point forrecycling of waste electrical and electronic equipment. The separate
collection and recycling of your waste equipment at the time ofdisposal will help to conserve natural resources and ensure that
it is recycled in a manner that protects human health and theenvironment. For more information about where you can drop
off your waste equipment for recycling, please contact your local
city office, your household waste disposal service or where youpurchased the product.

Limited Warranty
Please refer any warranty claim to the supplier of this equipment in
the first instance. Full warranty information for equipment supplied
directly by Solid State Logic can be found on our website:www.solidstatelogic.com-3-Introduction
Congratulations on your purchase of this API 500 series compatible
SSL E Series EQ module.
This module has been specifically designed to operate in an
API 500 series rack such as the API lunchbox® or equivalent. In
common with many such modules, the nominal input/output level is+4dBu.
Your new E Series EQ module is a re-implementation of two of theclassic SSL EQ circuits, dating back to the original E Series consoles. The module defaults to the original ‘Brown Knob’ circuit thatwas standard on all early production E Series consoles but can beswitched to emulate the later ‘Black Knob’ circuit.

Operation
Please refer to the illustration on page opposite.
The IN button

1switches the entire module in and out of circuit.

The BLK button 2 switches the module from the default ‘Brown
Knob’ EQ to ‘Black Knob’ EQ.

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‘Brown Knob’ EQ
With the BLK button out, the two parametric mid-band sections
feature SSL’s classic logarithmically symmetric design ensuring thatthe ±3dB up/down points retain the same musical interval from thecentre frequency regardless of frequency and amplitude settings.
The two shelving sections are traditional 6dB/octave designs with
an option for a fixed Q parametric response (by way of the BELLbutton).
The ‘02’ EQ, to give it its correct name, was used on countlessrecordings and mixes in the early eighties.

‘Black Knob’ EQ
In the mid-eighties a new ‘242’ EQ circuit was developed in conjunction with the legendary George Martin for the first SSL console
to be installed in AIR studios. The ‘Black Knob’ EQ, as it became
known, featured enhanced cut and boost ranges (±18dB instead of±15dB) together with a different control law for tighter control of low
frequencies.
It is this design which is retained today as the ‘E Series’ EQ optionof the Origin, AWS 924, AWS 948 and Duality consoles.

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Visit SSL at:www.solidstatelogic.com© Solid State Logic
All rights reserved under International and Pan-American Copyright Conventions
SSL® and Solid State Logic® are ® registered trademarks of Solid State Logic.
ORIGIN™, SuperAnalogue™, VHD™ and PureDrive™ are trademarks of Solid State Logic.
All other product names and trademarks are the property of their respective owners and are
hereby acknowledged.
No part of this publication may be reproduced in any form or by any means, whether mechanical or electronic, without the written permission of Solid State Logic, Oxford, OX5 1RU,England.
As research and development is a continual process, Solid State Logic reserves the right tochange the features and specifications described herein without notice or obligation.
Solid State Logic cannot be held responsible for any loss or damage arising directly or
indirectly from any error or omission in this manual.
PLEASE READ ALL INSTRUCTIONS, PAY SPECIAL HEED TO SAFETY WARNINGS.
E&OE
July 2020
Revision History
Revision V2.0, June 2020 - Revised Layout Release for Module Update-8-