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Full Range Active Speakers
DH-VCS-DE-9QH Series
User’s Manual
V1.0.0
Zhejiang Dahua Technology Co., Ltd.
Preface
Overview
This document contains quick configuration instructions for Dahua product model DH-VCS-DE-
9QH.
Symbol Conventions
The following symbols that may appear in this document carry the following meanings:
Symbol
Description
Danger
Danger indicates an imminently hazardous situation
which, if not avoided, will result in death or serious
injury.
Warning
Warning indicates a moderate or slight hazard which, if
not avoided, will result in minor or moderate injury.
Caution
Caution alerts you to possible equipment damage, data
loss, performance degradation or unpredictable results
if you do not follow instructions.
Anti-static
Alerts you to static-sensitive equipment.
Protection
Against Electric Shock
Alerts you to high voltage.
Laser Radiation
Alerts you to intense laser radiation.
Tips
Helps you to solve problems or save time.
Note
Additional information for the main text, which can be
emphasize and supplement the main text.
Safety Precautions
The following sections describe proper use of this product as well as measures used for hazard
prevention and protection against property loss. Please read the User Manual carefully before
using the equipment and strictly observe the instructions therein and also retain them for future
reference.
Warning
The product must be used with the recommended audio cable for your region and be used
within its rated specifications.
Cord sets (power cords) recommended for your local region must be used for the product
within their ratings.
Please use the standard power adapter that comes with the device. Otherwise, any
personal injury or device damage will be the liability of the user.
Important Statements
The physical product shall prevail while this User Manual is for reference only.
The User Manual and procedures are continuously updated and subject to change without
prior notice.
An end user should be liable for any losses that result from failure to follow the instructions
contained in the User Manual.
The User Manual may contain technical errors, non-conformities with functionalities or
operations of the product, or typographic errors; the ultimate power of interpretation is
vested with the company.
Other trademarks or company names that may be referred to in this document are
properties of their respective owners.
Contents
1 Overview .................................................................................................... 1
1.1 About This Product ............................................................................. 1
1.2 Product parameters ............................................................................ 1
1.2.1 Product Schematic ..................................................................... 1
1.2.2 Product Ports ............................................................................. 2
1.2.3 Basic Parameters ....................................................................... 2
Appendix 1 Technology parameters ........................................................... 3
Appendix 1.1 DH-VCS-DE-9QH ............................................................... 3
1
1 Overview
1.1 About This Product
The Full Range Active Speakers consists of multiple speakers that have been connected
in an array. The speakers' horizontal orientation resembles that of a single speaker, but
they have vastly improved vertical orientation. Horizontally, sound is transmitted like a
wave; vertically, the audio sounds more pointed, creating a plate-shaped radial effect.
When the speakers are placed on the sound stage and the "sound plate" is directed
towards the audience, powerful sound beams will radiate towards the rear of the auditorium,
but the phase difference caused by the vertical distance will cause the speakers to weaken
each other in the front of the auditorium. In this instance, sound pressure may be lower
than that of a single speaker, creating a more uniform distribution of direct sound within
the sound field. The speakers should not be bunched together horizontally, but radiate out
at wider angles to create a more uniform left and right sound field.
1.2 Product Parameters
1.2.1 Product Schematic
Figure 1–1 Speaker Product Diagram (Unit: mm)
Back
Front
Side
2
1.2.2 Product Ports
Figure 1–2 Diagram of Product Ports
1.2.3 Basic Parameters
Specifications
Product Specs
Unit Configuration:
Low Frequency Diaphragm 2.5 inch*4
Full Range 2.5 inch*4
Bass Echo Guide Hole*4
Frequency Response:
60Hz-20KHz
Power Input:
110-240V
Power Consumption:
30W
Rated Power:
60W
Maximum Power:
600W
Signal to Noise Ratio (S/N):
≥75dB
3
Appendix 1 Technology
parameters
Appendix 1.1 DH-VCS-DE-9QH
Parameters
Description
Equipment dimensions
930mm×90mm×90mm
Package size
1015mm×110mm×155mm
Equipment Net Weight
2.6kg
Equipment Gross Weight
3.5kg
Operating Voltage
AC 100V~AC 240V
Operating Frequency
50Hz~60Hz
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