Operator`s manual

ManualsBrandsDrawmer ManualsAmplifierHQ Series

Precision Pre-Amplifier / DAC

OPERATOR’S MANUAL

CONTENTS

Warranty

Safety Consideration

Chapter 1 - Introduction

Introduction

Installation

Power Connection

Audio Connections

Remote Operation & Linking

Setup Input Levels

Hooking Up the HQ

Chapter 2 - Control Description

Control Description

Quick Operation

Safety Features

Chapter 3 - Remote Control & Linking using HQ-r and HQ-b

Remote Operation and Linking for Surround

HQ-b Description

HQ-r & HQ-b Installation

HQ-r Control Description

Chapter 4 - General Information

Internal Jumper Settings

If a fault develops

Contacting Drawmer

Specification

Block Diagram

Exploded Diagram

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DRAWMER

HQ-b

HQ-r

Summary of content (17 pages)

PAGE 1
DRAWMER HQ-b HQ HQ-r Precision Pre-Amplifier / DAC OPERATOR’S MANUAL CONTENTS Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Safety Consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Chapter 1 - Introduction Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation . . . . . . . . . .
PAGE 2
COPYRIGHT This manual is copyrighted © 2011 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.
PAGE 3
CHAPTER 1 DRAWMER PRECISION PRE-AMPLIFIER / DAC Are you hearing what we’re hearing ? How good is your Monitor Preamp ? The monitor preamp is possibly the most important piece of equipment for both audio professionals and Hi-Fi enthusiasts alike. It is the last piece of equipment before the speakers, so it requires zero coloration, precise balance, low noise, wide bandwidth and a wide variety of input sources.
PAGE 4
INSTALLATION When you unpack your HQ you will notice that it has been fitted with both the rack ears and feet attached, to help during carriage, however, it has been designed so that it can be installed in a rack or free-standing. If it is to be freestanding, in a cabinet for example, the rack ears can be detached by removing the four screws that locate each ear (see fig. 01), whilst leaving the feet in place.
PAGE 5
AUDIO CONNECTIONS INPUTS The Drawmer HQ features a total of nine inputs - ANALOGUE D 3 4 B 8 9 1 2 A 5 6 Four analogue inputs: 1x Balanced via two XLR’s, 2x unbalanced and 1x Phono/line (switchable) via RCA connectors, as well as an earth connector for the phono stage. 1 BALANCED Electronically balanced on conventionally wired XLRs (pin 1 screen, pin 2 hot, pin 3 cold and XLR shell is connected to chassis). Balanced use is recommended. Only use very good quality microphone type cable.
PAGE 6
8 S/PDIF .... AUDIO CONNECTIONS CONT. Is via a high quality RCA type phono jack where the data conforms to the SonyJ PhillipsJ Digital InterFace format. Because this connector only provides an unbalanced termination, the recommended maximum length for this cable is 3 metres, even with very high quality cable. An additional S/PDIF input is available via the AES3id connector (see below).
PAGE 7
• 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 HQ to the patchbay. If such measures are necessary, balanced operation is recommended. • Interference: If the HQ 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 it is operated in a balanced configuration.
PAGE 8
HOOKING UP THE HQ O/P B O/P A The example is of a simple hookup, though the variations are virtually limitless. The analogue inputs of the HQ need not be used at all, allowing the HQ to operate purely has a very high quality DAC.
PAGE 9
CHAPTER 2 CONTROL DESCRIPTION For such a complex product the HQ is deceptively simple to operate: 1 POWER: A rotary switch that turns the HQ on or off. When on the controls of the unit will light up with a white glow, and the soft start procedure will begin - this will take a few seconds, during which time the HQ will not pass audio.
PAGE 10
QUICK OPERATION Using the HQ could not be simpler: 1) With the HQ switched off connect the inputs and outputs to the rear. 2) Turn the ‘Source’ control to the required input. 3) Select the Speakers that you wish to output to - either A, B or A+B 4) Switch the unit on and wait for the volume to increase via the ‘soft start’ feature. Note, if the output remains muted for more than a few seconds (the mute led will be lit) lower the volume control fully anti-clockwise and back (see ‘Safety Features’ below).
PAGE 11
CHAPTER 3 REMOTE CONTROL & LINKING USING HQ-r & HQ-b (optional) The HQ range consists of three aesthetically and functionally complimentary products that can be used independently or linked to provide multiple channels and remote operation. The three products are the HQ - stand-alone, with all controls on the front panel; the HQ-r - a desktop control surface for both the HQ and HQ-b; and the HQ-b - has no controls on the front panel but is operated by either the HQ or HQ-r.
PAGE 12
HQ-b Precision Pre-amplifier / DAC Blank Module The HQ-b is identical in every way to the HQ, but has been designed to be controlled remotely, either from an HQ or the HQ-r remote (see previous page) and so lacks the controls of the HQ front panel. It is installed in the same way, has identical power and audio connection on the rear, and the same performance. The Controls: 1 POWER: A rotary switch that turns the HQ-b on or off.
PAGE 13
HQ-r CONTROL DESCRIPTION When plugged in the remote shifts the HQ and/or HQ-b up a gear by adding several useful features that are invaluable to the mastering studio and allows the HQ to be used as a fully comprehensive DAC/Monitor Controller: V SOURCE: On the right of the remote are nine illuminated switches that switch between the nine analogue and digital inputs on the rear of the HQ/HQ-b.
PAGE 14
CHAPTER 4 INTERNAL JUMPER SETTINGS A few of the factory default settings can be altered via jumpers inside the unit to customize to your absolute optimum functional preferences. The following procedure must be done with great care and by a competent professional. Before continuing turn the power off and remove the mains I.E.C. cable.
PAGE 15
GENERAL INFORMATION IF A FAULT DEVELOPS CONTACTING DRAWMER For warranty service please call Drawmer Electronics Ltd. or their nearest authorised service facility, giving full details of the difficulty. Drawmer Electronics Ltd., will be pleased to answer all application questions to enhance your usage of this equipment. Please address correspondence to: A list of all main dealers can be found on the Drawmer webpages.
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BLOCK DIAGRAM HQ ver 01 C 27/01/11 16 DRAWMER HQ OPERATOR’S MANUAL
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DRAWMER HQ OPERATOR’S MANUAL 17