DA 6 DISTRIBUTION AMP OPERATORS MANUAL CONTENTS SAFETY CONSIDERATIONS page 1 INTRODUCTION page 2 INSTALLATION page 2 HEADPHONES pages 1, 4 ISOLATING TRANSFORMERS page 3 CONTROL DESCRIPTIONS page 6 IF A FAULT DEVELOPS page 8 CONTACTING DRAWMER page 8 TECHNICAL SPECIFICATION page 9 BLOCK DIAGRAM page 10
COPYRIGHT This manual is copyrighted © 2002 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 DA6 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.
DA6 OPERATORS’ MANUAL DRAWMER DA6 Distribution Amp SAFETY CONSIDERATIONS CAUTION - MAINS FUSE TO REDUCE THE RISK OF FIRE REPLACE THE MAINS FUSE ONLY WITH THE SAME TYPE, WHICH MUST BE A CLASS 3, 230 VOLT, TIME DELAY TYPE, RATED AT 160mA WHERE THE MAINS INPUT VOLTAGE SWITCH IS SET TO 230 VOLTS AC. AND 315mA WHERE THE MAINS INPUT VOLTAGE IS 115 VOLTS AC. ALL FUSES MUST COMPLY WITH IEC 127-2. THE FUSE BODY SIZE IS 20mm x 5mm.
DA6 OPERATORS’ MANUAL INTRODUCTION The distribution of mono and stereo balanced audio signals from a single source to multiple destinations has many applications, including: multi-zone sound reinforcement installation; live sports events coverage; broadcast studios; video suites; duplication houses or where high quality audio has to be distributed to a number of locations down long cable runs.
DA6 OPERATORS’ MANUAL 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 suggest that the unit be operated using an optional wiring of the 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 DA6 fully conforms to the EMC standards.
DA6 OPERATORS’ MANUAL MONITOR HEADPHONES For the purposes of monitoring each output, a stereo ¼" (TRS) jack socket is offered on the front panel. This having the standard wiring convention of Tip being Left; Ring being Right; and Sleeve being common Ground. This output is capable of driving headphones with an impedance between 8 and 600 . The amplifier has an output of approximately 1Watt. Caution is required when operating at high output levels with low impedance headphones.
DA6 OPERATORS’ MANUAL For conversion to 115Volt AC (previously set to 230Volt AC)..... 4a Exchange the 160mA fuse for a similar type rated at 315mA. For conversion to 230Volt AC (previously set to 115Volt AC)..... 4b Exchange the 315mA fuse for a similar type rated at 160mA. In both cases: 5: Replace the top cover using the seven screws. 6: Re-connect to mains power source.
DA6 OPERATORS’ MANUAL CONTROL DESCRIPTION The DA6 has been designed for ease of use. It operates on balanced or unbalanced signal levels in the range -15dB to +15dB.(ref. +4dBm) Input L&R Used to set the optimal input gain for both Left and Right signals. Use the display above to ensure the correct operating levels are being attained. Adjustment in the range ±15dB is possible. Separate controls are offered to permit the re-alignment of any offset stereo image.
DA6 OPERATORS’ MANUAL Chan Select This rotary switch selects which stereo (or mono) output is to be routed through to the stereo headphone amplifier. H/Phone This control determines the amount of headphone amplifier drive. Caution should be used when using high output levels and low impedance headphones. Output Display This display shows the stereo output levels of the selected channel feed to headphones, removing the need to utilise headphones as a method of monitoring the output signals.
DA6 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. For service claims under the warranty agreement a service Returns Authorisation (RA) number will be given.
DA6 OPERATORS’ MANUAL TECHNICAL SPECIFICATIONS All Levels ref.+4dBm INPUT IMPEDANCE 15K MAX. INPUT LEVEL Bal. +23.5dB Unbal. +18dB MAX. OUTPUT LEVEL Bal. +22.5dB (Any output) Unbal. +17.5dB into 600 . OUTPUT IMPEDANCE 33 (electronically balanced) NOISE Better than -95 dB (Gain=0dB, Bandwidth 22Hz - 22kHz) CROSSTALK Better than -90dB @ 10kHz (Input grounded, any channel output) DISTORTION @ 1kHz BANDWIDTH Output 0dB better than 0.008% +10dB better than 0.008% +20dB better than 0.
DA6 OPERATORS’ MANUAL BLOCK DIAGRAM
