SHENGYA A28 User manual

使用说明书 / User's Manual
中山市声雅音响电器有限公司
地址:广东省中山市小榄镇民安南路广进横街8号
电话:[phone]
传真:[phone]
邮箱:[email protected]om
www.shengya-audio.com
ZHONGSHAN SHENGYA AUDIO ELECTRONIC CO.,LTD
Address:No.8,Guangjin Heng Street,Min'an South Road,
Xiaolan Town,Zhongshan City,Guangdong Province
Tel:[phone]
Fax:[phone]
E-mail:[email protected]om
因产品改进，规格及外观如有小许变化，恕不另行通知，最终解释权归声雅音响电器有限公司所有。
A28
电子管与晶体管混合放大器
Integrated Stereo Amplifier
声雅微信公众号
ShengYa WeChat
Official Accounts
声雅微信客服号
ShengYa WeChat
Customer service
VER: S2.0

中文
目录
CONTENTS 感谢
感谢您购买声雅音响的 Hi-Fi 产品 !
我们相信，对高品位音响产品的不懈追求，是我们的责任，也是您的理想。
为使A28电子管与晶体管混合放大器更好地发挥它的性能，给你带来更大的乐趣，我们建
议您在连接及操作本系统之前，认真阅读本说明书。
安全警告
警告:为防止起火或触电事故,请不要让机器暴露在雨中或潮湿环境里。机内有危
险的高电压配件,因而不要打开机盖维修时只可委托给合资格的维修人员。
危险电压:为减少电击危险,请勿擅自拆卸盖子(或后板)。
请注意:装置内部并无用户自行检修的零部件,需要检修时,请委托经销商或合资
格的人员。
设备仅适用于热带气候条件下安全使用，最高操作温度为45°C；
设备仅适用于海拔5000m及以下地区安全使用；
设备使用器具耦合器作为断接装置；
01
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09
性能特点························································
前面板功能····················································
后面板功能····················································
系统连接························································
遥控器····························································
注意事项························································
故障指导························································
技术参数························································
中文
CHARACTERISTICS ·······································
FRONT PANEL FUNCTION ····························
BACK PANEL FUNCTION ·······························
REMOTE CONTROL ·······································
SYSTEM CONNECTION ··································
PRECAUTIONS ···············································
FAULT GUIDANCE ·········································
PARAMETERS ················································
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EN

0201
性能特点 前面板功能
A28是从原来A17CSII功放基础上改良而成的升级产品,配有同轴、光纤、蓝牙等数码信号输入功能。
机内音频信号放大电路使用发烧级电子管,胆味更浓郁,分析力和空气感更佳。
采用电子管与场效型晶体管和集成电路混合型精密高压稳压电源,音色表现不但具有胆味,而且电压稳定
性高,交流纹波系数低,比纯晶体管或纯电子管高压稳压电源对音质和音色所产生的好处更加显著。
晶体管功放部分的电压增益级由场效应管组成的共源共基放大模式;甲类电流放大采用东芝牌功率管,音
色表现更加厚暖甜润;输出功率为150W(8Ω)×2规格,令声音密度及大动态表现更加优异,轻松驱动各种高级名牌
扬声器。
电子管电路交连和退交连电容器为德国WIMA品牌MKP系列高级音响专用电容器。晶体管功放电源所用
的滤波电容为日本ELNA品牌FORAUDIO系列10000uf/80v规格,无论音色和音场都有上佳表现;对整机的音质和
音色提高起重要作用。
机内所使用的信号输入和输出线均为单晶铜高级音频信号线,令音色表现更加锦上添花。
采用日本制造的ALPS大型遥控式音量电位器;具有可靠耐用、噪声低、无音染、两声道间误差小特点。
输出采用大型镀金接线柱可方便与任何音箱线轻易连接,更可采用双线分音接法,使高低音频电流得到理
想的传输。
铝合金多功能红外线高级遥控器,令操作手感更佳更时尚。 音频输入选择旋钮
此旋钮是对不同的音频信号进行输入选择。
（被选中的音频信号旋钮周围指示灯相应点亮）
1
2音量按钮
此旋钮用作音量控制; 向右旋时增大, 向左旋时减少。
（红色指示灯是延时或机内保护状态指示用）
等响度开关按钮
在小音量聆听时,按下此按钮来补偿高低音的响度,但音量拧至过
半后,作用逐步减少。
8
3电源开关按钮
此开关用于接通或切断整机交流电源。
高音调节旋钮
此旋钮用作控制高音音调的大小;向右旋时增大,向左旋时减少。
4
音调开关按钮
此开关按下时,音频信号经音调控制,可作高低音调校,复位时不经
音调控制,此时为原汁原味的音质。
5
低音调节旋钮
此旋钮用作控制低音音调的大小;向右旋时增大,向左旋时减少。
7
遥控接收器
接收遥控器发出的红外线遥控指令信号。
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1
65 8
2
43 7

0403
后面板功能 系统连接
蓝牙接收器
用于数码设备之间的无线信号连接。
操作实例:
1.音响组合电源接通后蓝牙进入等待配对状态。
2.进入手机设置,开启手机蓝牙功能,扫描查找设备;手机会查找到
“ShengYa”字样,操作手机与之连接(不用输入密码连接)。
3.连接后,打开手机音乐播放器,按播放键,声音就会在音响组合器
上的喇叭播出。
注意:
1.如手机蓝牙一直没关闭,与音响蓝牙处于对通状态,当音响组合关机后,下次再开机,蓝牙
进入回连状态;10秒钟后回连不上则进入等待配对状态。
2.音响组合设备与手机蓝牙超出接收距离、断线后,如果60秒钟内回到正常距离,蓝牙可
自动回连连接,否则音响组合蓝牙进入等待配对状态。
3.音响组合蓝牙连接后,与另一台手机的蓝牙连接,需先关闭当前手机的蓝牙功能,再将操
作另一台手机蓝牙搜索才可连接。
4.音响组合蓝牙可以和笔记本电脑,手机,IPDA等数码产品的蓝牙产品设备相连接。
1
线路音频输入端子
此端子用作连接音源输出端子。(如音响设备、电脑、手机、MP3等)
4
窗口装饰灯控制开关
此开关用于控制窗口上的背光灯,开启(ON)、关闭(OFF)。
5
左、右声道输出接线柱
可连接阻抗为4-8Ω的音箱; 设有两组接线柱, 可进行双线分音接法;
其中红色为正极, 白色为负极。
6
2光纤数码输入端子
此端子用作连接数字设备的光纤接口。
(电脑/数字游戏机/CD /DVD播放机/高清电视机顶盒)
7带交流电源保险丝的电源插座
此电源插座用作连接交流电源,保险丝在电源插座下部,更换保险
丝时一定要将电源线拔下方可更换。
3同轴数码输入端子
此端子用作连接数字设备的同轴接口。
(电脑/数字游戏机/CD /DVD播放机/高清电视机顶盒)
注意:
红色为正极,白色为负极,音箱与输出接线柱连接时请对应相同极性,否
则会影响听音效果。
1将数字设备(游戏机/电脑主机/DVD播放机/高清电视
机顶盒等)的光纤/同轴端子与功放机的光纤/同轴输
入端子对应连接
信号源(CD唱机/手提电脑/平板电脑/手机)的音频输
出端子RCA(不平衡)与左,右声道输入端子RCA对应连
接。
2
右声道输出接线柱连接右声道音箱。
(可采用普通接法或双线分音接法;如图示普通接法)
3
12 3 5
6 7
4
A28功放
音箱
音源
HF
LF
HF
LF
CD唱机 手提电脑
(耳机输出插座) 平板电脑/手机 (耳机输出插座)
游戏机 电脑主机 DVD播放机 高清机顶盒
1
2
43
左声道输出接线柱连接左声道音箱。
(可采用普通接法或双线分音接法;如图示普通接法)
4

0605
遥控器遥控器
注意:
1.遥控器不应靠近过热或过潮之处, 更不应受阳光直射或强光照射。
2.遥控器请勿受到强烈碰撞或从高处跌下, 否则会损坏遥控器使其不能
正常工作。
3.请使用CR2032扭扣电池；勿混用新旧或不同型号的扭扣电池。
4.当遥控器长期不用时, 请将电池取出, 请勿将电池投入火中。
5.正常使用情况下, 每6个月更换电池一次。
1MUTE:(静音按键)
按一下此键,机器停止信号输出,同时信号输入指示灯
熄灭;音量旋钮指示灯闪烁;再按一下此键则恢复信号
输出。
2CD、LINE、AUX、BT、OPTICAL、COAXIAL:
（信号输入选择按键）
分别为CD、LINE、AUX、蓝牙、光纤、同轴信号输入。
3▲VOLUME▼:(音量控制按键)
按此键可控制音量的大小;"▲"为增加音量,"▼"为减小音量。
按键说明
遥控器
遥控感应器
使用操作
遥控器有效距离大约7米之内。
遥控器的接收角度为30度之内。
不可将机器的遥控感应器置于阳光或强光直射之
下;因这会导致遥控器无法操作。
推出电池盒
装入电池盒
将纽扣电池插入电池
盒， (正)极向上 (负)
极向下
1
2
3
使用准备
2
3
1
MUTE
CD LINE
AUX BT
OPTICAL COAXIAL

0807
故障指导注意事项
当您一段长时间不使用本机时请将
电源线从插座拔下。
不要随便拆开机壳拔弄内部器件,这
样会有触电危险。
清洁机壳时,请勿使用具有强烈挥发
性有机溶剂(如汽油,苯等)洗擦机面
机壳,应用柔软干净的布轻擦。
请将本机放置于通风良好以及干燥
的地方工作，不要放置在阳光直接照
射或靠近热源地方；并注意支承机器
的柜台四周要有一定空间，10cm内
无任何障碍物；以便机器通风散热。
机器上不能放置带液体的容器(如花
瓶、水杯、油瓶等)，更不可将任何类
型的液体洒入机器内，这会造成短路
或漏电事故。
使用电源时请手执插头绝缘部分插
入或拔下电源插座,不要直接扯电源
线。
原因 解决方法
1.电源线没接好
2.交流保险管熔断
3.音量旋钮在最小位置
4.输入信号线没有接好
5.音源未工作或音源不良
6.音箱连线未接好
7.机器严重过载
8.机内直流保险管熔断
7.关机并检查音箱线是否短接
8.请合格维修人员更换保险管
3.前级音量调整到适当的位置
4.接好输入信号线
5.开启音源或更换其他音源
6.接好音箱线
1.接好电源线
2.请合格维修人员更换保险管
1.一边信号输入线未接好
2.一边音箱线未接好
1.接好信号输入线
2.接好音箱线
1.信号线接触不良或插得不够深入
2.信号线不良
1.插紧信号线或用力把插头插入
2.更换信号线
异常现象
有一边
声道无声
无声
声音伴有很大
交流声(嗡嗡声)
遥控器失灵
1.遥控器没有对准功放机遥控接收器
2.遥控器距离功放机太远
3.有物体阻挡在遥控器与功放机之间
4.遥控器中的电池耗尽
1.将遥控器指向功放机
2.在7米之内使用遥控器
3.将阻挡物体拿走
4.换上新电池

1009
EN
技术参数
本公司产品保养维修委托当地经销商负责联络接洽。
我公司产品奉行不断改进与更新,产品规格及指标如有变更，恕不另行通知。
如有对本说明书不解之处，请向零售商咨询，或直接向本公司查询。
本产品的执行标准 :GB8898、Q/SHYA01-1997
5.输入灵敏度 ···························· : 200 mV
数码技术参数:
6.信噪比 ···································· : 90 dB(宽带)
7.输入阻抗 ································ : 47 KΩ
8.体积(W×H×D) ························· : 430×180×456(mm)
9.重量 ········································ : 18.5 kg 4.谐波失真 ································ : ≤0.1%(1kHz 1W)
1.频率响应 ································ : 20Hz-20kHz±0.5 dB
3.甲类输出功率 ························ : 10W+10W(8Ω)
2.额定输出功率 ························ : 150W+150W(8Ω)
1.光纤支持音频规格:最高支持24bit/192k格式播放。
2.蓝牙(5.0)支持音频格式:MP3、WAV、WMA、FAC等。
Thank you for purchasing Hi-Fi products of Shengya Audio!
We believe that the unremitting pursuit of high-quality audio products is our responsibility
and your ideal.
In order to make A28(Integrated Stereo Amplifier)better performance and bring you
greater pleasure, we recommend that you read this manual carefully before connecting and
operating the system.
GRATITUDE
Warning: In order to prevent fire or electric shock, please do not expose the
machine to rain or humid environment. There are dangerous high-voltage accesso-
ries in the machine, so do not open the machine cover and only entrust it to qualified
maintenance personnel.
Dangerous voltage: In order to reduce the risk of electric shock, please do not
remove the cover (or rear panel)without authorization.
Note: There are no user-overhauled parts inside the device. When overhauling is
required, please entrust the dealer or qualified personnel.
The equipment is only suitable for safe use in tropical climates, with a maximum operating temperature of 45°C;
The equipment is only suitable for safe use in areas with an altitude of 5000m and below;
The equipment uses an appliance coupler as a disconnect device.
SAFETY WARNING

1211
CHARACTERISTICS CHARACTERISTICS
A28 is an upgraded product improved from the original A17CSII power amplifier,
equipped with digital signal input functions such as coaxial, optical fiber, and
Bluetooth.
The audio signal amplifying circuit in the machine uses fever grade electronic
tubes, which has a warmer sound, better analysis.
The use of vacuum tube, field-effect transistor and integrated circuit hybrid
precision high-voltage stabilized power supply, not only has the sound performance,
but also has high voltage stability and low AC ripple coefficient. The benefits of timbre
are even more significant.
The voltage gain stage of the transistor power amplifier part is a common source
and common base amplifier mode composed of field effect tubes; the class A current
amplifier adopts Toshiba brand power tubes, and the sound performance is thicker
and warmer; the output power is 150W (8Ω)×2 specifications, so The sound density
and large dynamic performance are more excellent, and it can easily drive a variety of
advanced brand speakers.
The tube circuit cross-connect and de-cross-connect capacitors are German WIMA
brand MKP series high-end audio special capacitors. The filter capacitor used in the
transistor power amplifier power supply is the Japanese ELNA brand FORAUDIO
series 10000uf/50v specification, which play an important role in improving the sound
quality and tone of the whole machine.
The internal audio signal connection wire applyAmerican Kimber Kable, so that the
audio signal can be transmitted more ideally.
The signal input and output lines used in the machine are all single crystal copper
high-grade audio signal lines, which makes the sound performance better.
The volume controller is a large-scale potentiometer made in Japan ALPS; it is
reliable and durable, low noise, no sound staining, and small channel error
The output terminal adopts large gold-plated terminal, which can be easily
connected with any speaker wire, and can also adopt two-wire split-tone connection,
so that high and low audio currents can be ideally transmitted.
The aluminum alloy multi-function infrared remote control makes the operation
feel better and more fashionable.

1413
FRONT PANEL FUNCTION BACK PANEL FUNCTION
INPUT
This knob is for input selection of six different audio signals.
（The indicator lights around the selected audio signal knob will light up accordingly）
1
2VOLUME
This knob is used as a volume control; when it is turned to the
right, the volume increases, and when it is turned to the left, the
volume decreases.
（The red indicator light is for delay or internal protection status indication）
3POWER
This button is used to turn on or off the AC power supply of the
whole machine.
LOUD
When listening at a low volume, press this button to compensate
for the loudness of high and low sounds, but when the volume is
turned to more than half, the effect gradually decreases.
8
BASS
This knob is used to control the size of the bass tone; it increases
when it is turned to the right, and decreases when it is turned to
the left.
7
REMOTE CONTROL RECEIVER
Receive the infrared remote control command signal sent by the
remote control.
6
TONE
When this switch is pressed, the audio signal is controlled by the tone,
which can be adjusted for high and low sounds. When reset, it is not
controlled by the tone,and the original sound quality is at this time.
5
4TREBLE
This knob is used to control the size of the treble tone; it increases
when it is turned to the right, and decreases when it is turned to
the left.
RIGHT/LEFT CHANNEL OUTPUT TERMINAL
It can be connected to speakers with an impedance of 4-8Ω; the
red is the positive pole and the white is the negative pole.
6
2OPTICAL DIGITAL INPUT TERMINAL
This terminal is used as an optical interface for connecting digital
equipment.(Computer/digital game console/CD/DVD player/HD TV set-top box)
3COAXIAL DIGITAL INPUT TERMINAL
This terminal is used as an optical interface for connecting digital
equipment.(Computer/digital game console/CD/DVD player/HD TV set-top box)
LINE AUDIO INPUT TERMINAL
This terminal is used to connect the output terminal of the audio
source.(Such as audio equipment, computers, mobile phones, MP3, etc.)
4
7POWER SOCKET WITH AC POWER FUSE
This power socket is used to connect to AC power. The fuse is at
the bottom of the power socket. When replacing the fuse,be sure
to pull out the power cord to replace it.
DECORATION LIGHT CONTROL SWITCH
This switch is used to control the backlight in the window
2
5
BLUETOOTH RECEIVER
Used for wireless signal connection between digital devices.
Operation example:
1.After the power of the audio combination is turned on, the Bluetooth
enters the waiting state for pairing.
2.Enter the phone settings, turn on the phone’s Bluetooth function, scan
to find the device; the phone will find the word "ShengYa", operate the
phone to connect with it (you don’t need to enter a password to connect).
3.After connecting, turn on the mobile music player, press the play button,
and the sound will be broadcast on the speaker on the audio combiner.
Notice:
1.If the Bluetooth of the mobile phone has not been turned off, and the
Bluetooth of the speaker is in a state of pairing, when the speaker
combination is turned off, the next time it is turned on, the Bluetooth will
enter the reconnecting state; after 10 seconds, it will enter the waiting for
pairing state.
2.After the Bluetooth of the audio combination device and the mobile
phone is out of the receiving distance or disconnected, if it returns to the
normal distance within 60 seconds, the Bluetooth can automatically
connect back to the connection, otherwise the Bluetooth of the audio
combination enters the waiting state for pairing.
3.After the speaker combination is connected with Bluetooth, it is
necessary to turn off the Bluetooth function of the current phone before
connecting with the Bluetooth of another mobile phone, and then operate
the Bluetooth search of another mobile phone to connect.
4.The speaker combination Bluetooth can be connected with bluetooth
products of digital products such as laptops, mobile phones, IPDA and
other digital products.
1
1
65 8
2
43 7
12 3 5
6 7
4

1615
REMOTE CONTROL REMOTE CONTROL
Introducing the battery box
Insert the battery box
Insert the coin cell battery into
the battery box, (positive)pole
up; (negative)pole down
1
2
3
Preparation
Remote
Control
Remote Control
Receiving
Use Operation
The effective distance of the remote control is about
7 meters.
The receiving angle of the remote control is within 30
degrees.
Do not place the remote control sensor of the machine
under direct sunlight or strong light; this will cause the
remote control to fail to operate.
Function Description
NOTE:
1. The remote control should not be near overheated or humid places,and should not be exposed to direct
sunlight or strong light.
2. Do not subject the remote control to strong collisions or fall from a high place, otherwise it will damage
the remote control and make it impossible normal work.
3. Please use CR2032 button batteries; do not mix new and old button batteries or different types of button
batteries.
4. When the remote control is not used for a long time, please take out the battery and do not throw the
battery into the fire.
5. Under normal use, replace the battery every 6 months.
MUTE
Press this key once to stop the signal output; press this key again to resume signal output.
1
CD、LINE、AUX、BT、OPTICAL、COAXIAL
Signal input selection button:
They are CD, LINE, AUX, Bluetooth, optical, and coaxial signal input.
2
▲VOLUME▼
Press this key to control the volume; "▲" to increase the volume, and "▼" to decrease the volume.
3
MUTE
CD LINE
AUX BT
OPTICAL COAXIAL
2
3
1

1817
PRECAUTIONSSYSTEM CONNECTION
Please unplug the power cord from
the socket when you are not using
the machine for a long time.
Do not disassemble the casing and
try to get the internal components,
otherwise there will be a risk of
electric shock.
When cleaning the cabinet, do not
use strong volatile organic solvents
(such as gasoline,benzene,etc.)to
clean the cabinet on the surface of
the machine.Use a soft,clean cloth
to wipe gently.
Please place the machine in a
well-ventilated and dry place for
work.Do not place it in direct sun-
light or close to a heat source;and
pay attention to a certain space
around the counter supporting the
machine,without any obstacles
within 10cm;to allow the machine
to ventilate and dissipate heat.
Do not place containers with liquids
(such as vases,water cups, oil bot-
tles,etc.)on the machine, and do
not spill any type of liquid into the
machine,which may cause short
circuits or electric leakage acci-
dents.
When using the power supply, insert
or unplug the power socket by
holding the insulated part of the
plug,and do not pull the power cord
directly.
NOTE:
Red is positive and white is negative. When connecting the speaker
and the output terminal, please correspond to the same polarity,
otherwise it will affect the listening effect.
1Connect the optical / coaxial terminal of the digital
device (game console / computer host / DVD player /
HD TV set-top box, etc.)to the optical/coaxial input
terminal of the power amplifier correspondingly.
The RCA audio output terminal of the signal source
(CD player/Laptop/PAD/mobile phone)is connected
to the left and right channel RCA input terminals
correspondingly.
2
The right channel output binding post connects to
the right channel speaker.
(Common connection or two-wire split-tone connection can be
used; as shown in the figure,common connection)
3
The left channel output binding post connects to the
left channel speaker.
(Common connection or two-wire split-tone connection can be
used; as shown in the figure,common connection)
4
SOUND SOURCEA28 AMPLIFIERSPERKER
HF
LF
HF
LF
CD Player Laptop PAD/Mobile Phone
(Headphone output socket)
Game
Console Computer Host DVD Player HD TV set-top box
1
2
43
(耳机输出插座)

2019
FAULT GUIDANCE PARAMETERS
The company's product maintenance and repair entrust the local distributor to be responsible for contacting and contacting.
Our company's products pursue continuous improvement and update, product specifications and indicators are subject to change without notice.
If you have any questions about this manual, please consult the retailer or directly contact our company.
Implementation standards of this product:GB8898、Q/SHYA01-1997
3.The volume knob is in the minimum position
4.The input signal line is not connected properly
5.The sound source is not working or the sound source is bad
6.Speaker connection is not connected
7.The machine is overloaded
8.Internal DC fuse breaker
7.Replace speakers with 4-8Ω impedance
8.Ask qualified maintenance personnel to replace the fuse
3.Adjust the volume to the appropriate position
4.Connect the input signal line
5.Turn on the audio source or change to another audio source
6.Connect the speaker cable
1.Connect the power cord
2.Ask qualified maintenance personnel to replace the fuse
1.The power cord is not connected properly
2.AC fuse blown
1.One side of the signal line is not connected
2.One speaker cable is not connected properly
1.Connect the signal line
2.Connect the speaker cable
1.The signal line is in poor contact or not inserted deep enough
2.Bad signal line
1.Tighten the signal cable or force the plug into
2.Replace the signal line
ABNORMAL REASON SOLUTION
Mute
One side channel
is voiceless
The sound is
accompanied by a
loud humming
Remote control
malfunction
1.The remote control is not pointed at the remote control
receiver of the amplifier
2.The remote control is too far away from the amplifier
3.There is an object blocking between the remote control and
the amplifier
4.The battery in the remote control is exhausted
1.Point the remote control at the amplifier
2.Use the remote control within 7 meters
3.Remove obstructing objects
4.Replace with new batteries
5.Input Sensitivity ························ : 200 mV
Digital Technical Parameters:
6.Signal To Noise Ratio ················· : 90 dB(wideband)
7.Input Impedance ······················ : 47 KΩ
8.Dimensions(W×H×D)················ : 430×180×456(mm)
9.Weight ····································· : 18.5 kg4.Harmonic Distortion ················· : ≤0.1%(1kHz 1W)
1.Frequency Response ················ : 20Hz-20kHz±0.5 dB
3.Class A Output Power ················ : 10W+10W(8Ω)
2.Output Power ··························· : 150W+150W(8Ω)
1.Optical fiber supports audio specifications: up to 24bit/192k format playback.
2.Bluetooth(5.0)supports audio formats: MP3, WAV, WMA, FAC, etc.