SHOW CSB-20T Indoors Mini Speaker User Manual

: June 15, 2024
: SHOW

Table of Contents

IMPORTANT!
SAFETY RELATED SYMBOLS
IMPORTANT SAFETY INSTRUCTIONS
INTRODUCTION
CONTROL ELEMENTS
CONNECTION DESCRIPTION
INSTALLATION DESCRIPTION
BLOCK DIAGRAM
TECHNICAL SPECIFICATIONS
FREQUENCY RESPONSE DIAGRAMS
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SHOW CSB-20T Indoors Mini Speaker User Manual

IMPORTANT!

Please read this manual carefully before operating this unit for the first time.
All rights reserved to SEIKAKU. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this catalogue without written permission is forbidden. Copyright © 2009 SEIKAKU GROUP

The symbol is used to indicate that some hazardous live terminals are involved within this apparatus, even under the normal operating conditions.

The symbol is used in the service documentation to indicate that specific component shall be only replaced by the component specified in that Documentation for safety reasons.

Protective grounding terminal.

Alternating current /voltage.

Hazardous live terminal
ON: Denotes the apparatus turns on.
OFF: Denotes the apparatus turns off, because of using the single pole switch, be sure to unplug the AC power to prevent any electric shock before you proceed your service.
WARNING: Describes precautions that should be observed to prevent the danger of injury or death to the user.

Disposing of this product should not be placed in municipal waste and should be separate collection.

CAUTION: Describes precautions that should be observed to prevent danger of the apparatus.
WARNING

Power Supply
Ensure the source voltage matches the voltage of the power supply before turning ON the apparatus.
Unplug this apparatus during lightning storms or when unused for long periods of time.
External Connection
The external wiring connected to the output hazardous live terminals requires installation by an instructed person, or the use of readymade leads or cords.
Do not Remove any Cover
There are maybe some areas with high voltages inside, to reduce the risk of electric shock, do not remove any cover if the power supply is connected.
The cover should be removed by the qualified personnel only.
No user serviceable parts inside.
Fuse
To prevent a fire, make sure to use fuses with specified standard (current, voltage, type). Do not use a different fuse or short circuit the fuse holder.
Before replacing the fuse, turn OFF the apparatus and disconnected the power source.
Protective Grounding
Make sure to connect the protective grounding to prevent any electric shock before turning ON the apparatus.
Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal.
Operating Conditions
This apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on this apparatus.

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
Do not use this apparatus near water.
Install in accordance with the manufacture-r’s instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not block any ventilation openings.

No naked flame sources, such as lighted candles, should be placed on the apparatus.

IMPORTANT SAFETY INSTRUCTIONS

Read these instructions.
Follow all instructions.
Keep these instructions.
Heed all warnings.
Only use attachments/accessories specified by the manufacturer.
Power Cord and Plug
**** Do not defeat the safety purpose of the polarized or grounding type plug.
A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety.
If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
Cleaning
When the apparatus needs a cleaning, you can blow off dust from the apparatus with

INTRODUCTION

CSB series is designed for indoor installation and most public address system. It provides quality performance and alternative three models, including passive speaker cabinet, speaker cabinet with transformer and active speaker cabinet. Furthermore, we offer optional metal rotatable mounting bracket, thus you can install CSB speaker on wall easily. This new compact speaker series meet every demands for restaurants, supermarket, shopping mall, pubs, and so on.
Enjoy your CSB series speaker cabinet and make sure that read this manual carefully before operation.

CONTROL ELEMENTS

REAR PANEL

Input Connection
Use push-button for fixed installation.
The Positive connection is usually marked with ( + ), or Red push-button. Use it to connect the amplifier output ( + ).
The Negative connection is usually marked with ( – ), or Black push-button. Use it to connect the amplifier output ( – ).
Power Selections
With this rotary switch, it is possible to select the power level of the CSB- 10T/20T from 2.5W minimum to 20W maximum, for two different Constant Voltages 70V or 100V. In Off position the speaker system is disconnected from the Line.
Balanced Input
Use this socket to input signal with a 6.3 cable.
ON/OFF switch
Use this switch to switch on/off power supply.
Stereo Input
It is used to input stereo signal.
LINK
It is used for outer signal output and be connected with other active speaker cabinets.
Volume Control
It is used to adjust the main volume.

CONNECTION DESCRIPTION

CONNECT ONE CSB PASSIVE MODEL TO ONE AMPLIFIER (FIGURE 1):
When the nominal impedance of the speaker you need to set up is 8 , then you should select and connect it to the amplifier terminal with 8 norminal impedance. Please notice that the speaker nominal impedance is no less than 3/4 nominal impedance of amplifier output.
Connect “8 /+”of amplifier output to the red push button (+) of speaker and “com/-” of the amplifier to the black one (-) of the speaker.

(FIGURE 1)
CONNECT TWO OR MORE CSB PASSIVE MODELS TO ONE AMPLIFIER (FIGURE 2):
When two speakers with 8 nominal impedance are parallel, and the total impedance is 4 , then you should select and connect one of them to the amplifier terminal with 4 nominal impedance.
Please notice that the total impedance of the parallelled speakers is no less than 3/4 nominal impedance of amplifier output. Connect “4 /+”of amplifier output to the red push button (+) of speaker and “com/-” of the amplifier to the black one (-) of the speaker.

(FIGURE 2)
LEVEL DISTRIBUTION SYSTEM (CSB “T” MODEL) CONNECTION DESCRIPTION:
Level distribution system only controls “T” model. CSB-10T and CSB-20T have built-in transformer of 70/100V , can connect many speakers to one channel , and only need one amplifier. The output terminal “com/-” stands for negative polar, terminal “70V/100V/+ ” stands for positive .The red speaker terminal stands for positive, black stands for negative. Please connect amplifier to speaker right, incorrect connection may cause damage to amplifier and speaker. Finally set your desired output power ,see picture 3A to adjust the band switch to meet your need, i amplifier n this case, the total power of all the speakers can’t exceed the nominal power of amplifier. One 80W amplifier channel can drive 8 speakers of 10W, i.e. 10 8=80 80W). For safety, the total power of all the speakers should be less than 3/4 nominal power of amplifier (One 80W amplifier channel can drive 6 speakers of 10W, i.e. 10 6=60W 80W).

(FIGURE 3A)
6 10 WATT=60 WATT TOTAL LOAD ON AMPLIFIER

(FIGURE 3B)

INSTALLATION DESCRIPTION

Note: Commercial audio installation system must conform to local building laws. When install speaker on wall or ceiling, please consult a building constructer with a license or a professional engineer. The corporation won’t be responsible for the improper installation or damage because of not conforming to installation description.
Installation procedure of CS-2 bracket is very simple and convenient, the appearance is pleasing to the eye.

Step 1: Fasten the CS-2 bracket on the wall with screws. The wall material must support the weight of the cabinet. (1)
Step 2: Place the body of cabinet in bracket and lock the screws tightly CS-2
Step 3: Use screw CS-2 bracket and CS-2 bracket and use steel rope to connect two brackets.

INDOOR INSTALLATION DESCRIPTION:
CSB series speakers are designed specially for fixing and using in different circumstances. The property of speakers may be different due to different circumstances. There is an acoustic surface (wall, floor and ceiling) in a closed room, so the acoustic indoor will turn complex. When acoustic wave hits the surface, a part of acoustic energy is others are absorbed. Reflection and absorption are depending on the frequencies of acoustic wave and angle of hitting surface. When operate the cabinet, both man and furniture can absorb the acoustic energy. Please note the position of man and furniture when installing. Reverberation is the results of the reflected acoustic wave continue bouncing between the surfaces. Every reflection will loss the energy. When the acoustic hit the reflection surface, the room will be filled with random reflected acoustic wave. The music and address will be complex. It is recommended that install more speakers and make the volume of speakers lower to reduce the reverberation in high reverberating room. (Please see figure 5B)

ONE LOUD SPEAKER (figure5A)

MULTIPLE QUIET SPEAKERS (figure5B)

Speaker coverage range Direct the center axile of the speaker to the flat surface of receiving area. The speakers of 90 90 series can spread the speaker tone to all the directions at the axile of 45 . If you use the speakers in large room, you can divide the room to some zones. Then decide the installing location of the speakers . (Please see figure 6)

HORIZONTAL

VERTICAL
(figure6)

BLOCK DIAGRAM

TECHNICAL SPECIFICATIONS

Model:	CSB-20	CSB-20T
System Type:	**** Passive speaker cabinet	Speaker cabinet with
transformer	**** Active speaker cabinet
Speaker:	3”(77*77mm)paper cone speaker	3”(77*77mm)paper cone
speaker	3”(77*77mm)paper cone speaker
0.8”(20.4mm)voice coil diameter	0.8”(20.4mm)voice coil diameter

FREQUENCY RESPONSE DIAGRAMS

CSB-10

Hz
Audio Precision CSB-10A

Hz
Audio Precision CSB-10T

Hz
Audio Precision CSB-20

Hz
Audio Precision CSB-20A

Hz
Audio Precision CSB-20T

Hz

SHOW
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SEIKAKU TECHNICAL GROUP LIMITED
NO.I LANE 17, SEC.2, HAN SHI WEST ROAD, TAICHUNG 40151, TAIWAN
tel: 886-4-22313737 –
fax: 886-4-22346757
www.show-pa.com
seikaku@seikaku.com