Drawmer Three-Sum Multi-Band Interface User Manual
DRAWMER
THREE-SUM
Multi-Band Interface
OPERATOR’S MANUAL
Warranty
Safety Consideration
Chapter 1 - Introduction
Introduction
Installation
Audio Connections
Power Connection
Chapter 2 - Control Description
Control Description
Chapter 3 - Operation
Operation
Chapter 4 - General Information
If a fault develops
Contacting Drawmer
Specification
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1
CONTENTS
COPYRIGHT
This manual is copyrighted
© 2005 by Drawmer Electronics Ltd. With all rights reserved. Under copyright
laws, no part of this publication may be reproduced, transmitted, stored in a retrieval system or translated
into any language in any form by any means, mechanical, optical, electronic, recording, or otherwise, without the written permission of Drawmer Electronics Ltd.
ONE YEAR LIMITED WARRANTY
Drawmer Electronics Ltd., warrants the Drawmer Three-Sum
Multi-Band Interface to conform substantially to the
specifications of this manual for a period of one year from the
original date of purchase when used in accordance with the
specifications detailed in this manual. In the case of a valid
warranty claim, your sole and exclusive remedy and Drawmer’s
entire liability under any theory of liability will be to, at Drawmer’s
discretion, repair or replace the product without charge, or, if
not possible, to refund the purchase price to you. This warranty
is not transferable. It applies only to the original purchaser of
the product.
SAFETY CONSIDERATIONS
DRAWMER
Three-Sum
Multi-Band Interface
CAUTION - MAINS FUSE
For warranty service please call your local Drawmer dealer.
Alternatively call Drawmer Electronics Ltd. at +44 (0)1709
527574. Then ship the defective product, with transportation
and insurance charges pre-paid, to Drawmer Electronics Ltd.,
Coleman Street, Parkgate, Rotherham, S62 6EL UK. Write the
RA number in large letters in a prominent position on the
shipping box. Enclose your name, address, telephone number,
copy of the original sales invoice and a detailed description of
the problem. Drawmer will not accept responsibility for loss or
damage during transit.
This warranty is void if the product has been damaged by
misuse, modification or unauthorised repair.
THIS WARRANTY IS IN LIEU OF ALL WARRANTIES,
WHETHER ORAL OR WRITTEN, EXPRESSED, IMPLIED OR
ST A TUTORY. DRAWMER MAKES NO OTHER W ARRANTY
EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, ANY IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A P ARTICULAR PURPOSE,
OR NON-INFRINGEMENT. PURCHASER’S SOLE AND
EXCLUSIVE REMEDY UNDER THIS WARRANTY SHALL BE
REP AIR OR REPLACEMENT AS SPECIFIED HEREIN.
IN NO EVENT WILL DRAWMER ELECTRONICS LTD. BE
LIABLE FOR ANY DIRECT , INDIRECT , SPECIAL, INCIDENT AL
OR CONSEQUENTIAL DAMAGES RESUL TING FROM ANY
DEFECT IN THE PRODUCT, INCLUDING LOST PROFITS,
DAMAGE TO PROPERTY , AND, TO THE EXTENT PERMITTED
BY LAW, DAMAGE FOR PERSONAL INJURY, EVEN IF
DRAWMER HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
TO REDUCE THE RISK OF FIRE
REPLACE THE MAINS FUSE ONL Y WITH
A FUSE THAT CONFORMS TO IEC127-2.
250 VOL T WORKING, TIME DELAY TYPE
AND BODY SIZE OF 20mm x 5mm.
THE MAINS INPUT FUSE MUST BE
RA TED AT 230V=T80mA and 115V=T160mA.
CAUTION - MAINS CABLE
DO NOT ATTEMPT TO CHANGE
OR T AMPER WITH THE
SUPPLIED MAINS CABLE.
CAUTION - SERVICING
DO NOT PERFORM ANY SERVICING.
REFER ALL SERVICING TO QUALIFIED
SERVICE PERSONNEL.
WARNING
TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK DO NOT EXPOSE
THIS EQUIPMENT TO RAIN OR MOISTURE.
Some states and specific countries do not allow the exclusion
of implied warranties or limitations on how long an implied
warranty may last, so the above limitations may not apply to
you. This warranty gives you specific legal rights. You may
have additional rights that vary from state to state, and country
to country .
In the interests of product development, Drawmer reserve the right to modify or
improve specifications of this product at any time, without prior notice.
2
DRAWMER THREE-SUM OPERATOR’S MANUAL
DRAWMER
THREE-SUM
MULTI-BAND INTERFACE
INTRODUCTION
CHAPTER 1
The benefits of multi-band processing, with the ability to
apply different parameters to different sections of the audio
bandwidth have been apparent to sound engineers for quite
some time.
However, ‘locking in’your audio to any one specific multiband unit can vastly reduce the creative options. The
desired combination of processing to deal with low
frequency energy , the vocal mid range and high frequency
detail and enhancement is not necessarily available from
any one manufacturer.
The new Drawmer THREE-SUM opens up a whole new
set of options allowing the engineer to split the audio into
two or three bands and apply his or her own sonic signature
to each part of the audio bandwidth.
The Key Features are as follows:
• Continuously V ariable Band Splitting
• Switchable Mute & Bypass On Each Band
• Variable Threshold, T wo S tage Brick Wall Limiter Section
The THREE-SUM employs a high quality signal path
culminating in a variable threshold, brick wall limiter section
with bypass facility. To ensure transparency the limiter
design is ‘two stage’, applying different processing to the
H.F. content of the material. In applications where the
dynamics of the material need to be retained to create an
open sound, the limiter is essential for catching peaks.
The THREE-SUM has been designed for use in high-end
mastering and general recording applications, alternatively,
it can transform a project studio, equipped only with ‘single
band’ processors, into a serious multi-band facility .
• Two Or Three Band Operation
• VU Metering With +10dB Re-Scale Mode For Hot Output Levels
• Variable Input & Output Levels
• Individual Band Or Multi-Band Processing
• High Quality , Minimal Signal Path With Balanced XLR Inputs/Outputs
Applications:
• Mastering • Stereo Sweetening • Bass Tracks • Drum Tracks • Voice Smoothing
• Use More Creatively - Single Band Distortion / Reverb / Delay
DRAWMER THREE-SUM OPERATOR’S MANUAL
3
INSTALLATION
The THREE-SUM is designed for standard 19" rack
mounting and occupies 1U of rack space. Avoid mounting
the unit directly above power amplifiers or power supplies
that radiate significant amounts of heat. Always connect
the mains earth to the unit. Fibre or plastic washers may
be used to prevent the front panel becoming marked by
the mounting bolts.
AUDIO CONNECTIONS
The inputs and outputs are electronically balanced on conventionally wired XLRs (pin 1 screen, pin 2 hot, pin 3 cold and
XLR shell is connected to chassis). The operating level is nominally +4dBu. Balanced use is recommended.
• Interference:
If the unit is to be used where it maybe exposed to
high levels of disturbance such as found close to a TV
or radio transmitter, we advise that the unit is operated in a balanced configuration. The screens of the
signal cables should be connected to the chassis connection on the XLR connector as opposed to connecting to pin1. The Three-Sum conforms to the EMC
standards.
• Ground Loops:
If ground loop problems are encountered, never disconnect the mains earth, but instead, try disconnecting the signal screen on one end of each of the cables
connecting the outputs of the Three-Sum to the
patchbay . If such measures are necessary , balanced
operation is recommended.
fig.1 TYPICAL THREE-SUM SETUP
4
DRAWMER THREE-SUM OPERATOR’S MANUAL
Loading...