MULTI-CHANNEL SURROUND DYNAMICS OPERATORS MANUAL CONTENTS SAFETY CONSIDERATIONS page 1 INTRODUCTION page 2 INSTALLATION page 2 POWER CONNECTION Page 2 AUDIO CONNECTIONS Page 3 CONTROL DESCRIPTIONS page 5 OPERATION page 8 IF A FAULT DEVELOPS page 10 CONTACTING DRAWMER page 10 TECHNICAL SPECIFICATION page 11 BLOCK DIAGRAM page 12 i
COPYRIGHT This manual is copyrighted © 2001 by Drawmer Electronics, Ltd. With all rights reserved. Under copyright laws, this manual may not be duplicated in whole or in part without the written consent of Drawmer. ONE YEAR LIMITED WARRANTY Drawmer Electronics Ltd., warrants the Drawmer “Six-Pack” audio processor 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.
SIX-PACK” OPERATORS’ MANUAL 1 DRAWMER Six-Pack Multi-Channel Surround Dynamics SAFETY CONSIDERATIONS CAUTION - MAINS FUSE TO REDUCE THE RISK OF FIRE REPLACE THE MAINS FUSE ONLY WITH A FUSE THAT CONFORMS TO BS EN 60127-2:1991 SHEET III. 250 VOLT WORKING, TIME DELAY TYPE AND BODY SIZE OF 20mm x 5mm. THE MAINS INPUT FUSE MUST BE RATED AT T500mA. . CAUTION - MAINS CABLE DO NOT ATTEMPT TO CHANGE OR TAMPER WITH THE SUPPLIED MAINS CABLE. CAUTION - SERVICING DO NOT PERFORM ANY SERVICING.
2 “SIX-PACK” OPERATORS’ MANUAL INTRODUCTION The Drawmer SixPack is a six channel Expander/Compressor/Limiter with extensive linking facilities which allow for the various configurations commonly used in multi-channel surround processing as well as the more conventional stereo and single channel operation. Each channel has a program adaptive expander, with variable threshold and release times, followed by a soft knee compressor with optional auto attack and release as well as the normal manual controls.
SIX-PACK” OPERATORS’ MANUAL 3 AUDIO CONNECTIONS Both the input and output connectors may be used either balanced or unbalanced, the wiring convention for XLR connectors being: pin 2 hot, pin 3 cold and pin 1 ground. Unbalanced operation is achieved by shorting pin 3 of the XLR connector to ground (pin 1) at both input and output.
4 “SIX-PACK” OPERATORS’ MANUAL Connecting the Six-Pack to a 5.
SIX-PACK” OPERATORS’ MANUAL 5 CONTROL DESCRIPTION All six channels of the “Six-Pack” are identical and may be used completely independently or linked for 5.1 surround operation. EXPANDER Threshold: Range -70dB to +20dB. This control sets the level below which expansion starts to take place. When the expander starts to operate, the red status LED will come on.
6 “SIX-PACK” OPERATORS’ MANUAL Auto: When selected, Auto disables the Attack and Release controls and continually optimises the attack and release times to suit the d of the material being processed. In general, this setting will produce the least obtrusive level control on signals with widely varying dynamics or complete mixes. Gain: The output level may be attenuated or amplified by up to 20dB to compensate for level changes caused by compression and limiting.
SIX-PACK” OPERATORS’ MANUAL 7 LINKING Link: Pressing the link switch on any channel causes it to be linked to and completely controlled from, the previous channel (to the left). Therefore, pressing link on channel 2, will link channels 1 and 2, with channel 1 being the master channel. In addition, pressing link on channels 2 and 3 will link channels 1,2 and 3 with channel 1 being the master. All channels show Master or Linked status. Channel 1 is always a master channel.
8 “SIX-PACK” OPERATORS’ MANUAL OPERATION The unit should be connected in line with the signal to be processed via suitable insert points. For single channel use, each channel may be considered as being completely independent and set up accordingly. For use with stereo or multichannel signals such as complete mixes or submixes, the unit should be switched to Link mode and all setting up done using the master channel controls.
SIX-PACK” OPERATORS’ MANUAL 9 LED flickers during a piece of quiet but wanted material that it is having a detrimental i effect. When it first comes ears! Finally, set the Gain control to give the required output level using the level meter to guide you. Av o i d r u n n i n g a t v e r y h i g h o u t p u t l e v e l s a s t h i s r e d u c e s t h e a v a i l a b amount of signal head room and could lead to distortion in extrem e c a s e s .
10 “SIX-PACK” OPERATORS’ MANUAL IF A FAULT DEVELOPS For warranty service please call Drawmer Electronics Ltd. Or their nearest authorised service facility, giving full details of the difficulty. On receipt of this information, service or shipping instructions will be forwarded to you. No equipment should be returned under the warranty without prior consent from Drawmer or their authorised representative.
SIX-PACK” OPERATORS’ MANUAL 11 TECHNICAL SPECIFICATIONS (Measurements taken at +4dBu operating level where applicable) INPUT IMPEDANCE 20K S MAXIMUM INPUT LEVEL +20dBu OUTPUT IMPEDANCE 50 S (bal), 100 S (unbal) MAXIMUM OUTPUT LEVEL +20dBu BANDWIDTH <10Hz to 22KHz -1dB NOISE AT UNITY GAIN with Expander Off Wideband 22Hz - 22KHz CCIR ARM IEC A Q-Pk CCIR AV -90dB -95dB -95dB -97dB -84dB RMS -88dB -93dB -93dB -95dB -82dB DISTORTION Unity Gain, +4dBu input +14dBu input, 10dB Gain R
12 “SIX-PACK” OPERATORS’ MANUAL BLOCK DIAGRAM
