SHENGYA A-238 II 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。
A-238 II
全平衡甲类音频放大器(电子管与晶体管混合式)
Class A Balanced Hybrid Amplifier
声雅微信公众号
ShengYa WeChat
Official Accounts
声雅微信客服号
ShengYa WeChat
Customer service

01
中文
目录感谢
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 A-238 II 全平衡甲类音频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。 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
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11
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；

0201
01
性能特点
/02
前面板功能
/
1 65 8
2 3 4 7 9
芯片CS3310,令声道之间误差电平控制在0.5dB之内,大大
优于四联机械式电位器±3dB控制精度。
机内放置带屏蔽盒的环形大功率变压器,整个变压
器由环氧树脂充填,有效地减少变压器工作时所产生的振
动噪声干扰。交流电源插座使用日本古河品牌的镀金产
品，内置保险丝选用瑞士舒尔特品牌产品。两声道独立使
用音响专用滤波电容和整流器,总容量高达12万微法、32
支大功率晶体管组成每声道100W(8Ω)纯甲类输出功率,
除了细腻润厚音色表现之外还有力拔山河的音质表现,音
箱接线柱选用德国WBT品牌产品,不平衡信号输入端子
LINE1选用德国WBT品牌产品,平衡信号输入端子选用瑞
士纽崔克品牌产品。
本机另一功能是可作独立后级功率放大器使用,可
选用LINE5高电平信号输入端子连接其它前级作后级功
率放大器使用。
A-238引入了CPU全功能操控和数据信息荧屏显示
方式,使高级HIFI功放进入了划时代的数码科技领域,为了
让爱好者更方便的使用本机,特设置了红外线全功能遥控
系统,实现了全数据信息交流的人机对话的操控效果。
A-238II全平衡甲类音频放大器是声雅公司多年来
对电子管和晶体管混合式功放开发设计经验和制造能力
综合表现的新产品。采用了国际上众多的高级音响产品
制造商和发烧友所认同的全平衡甲类放大电路,令音质、
音色、音场的表现达到业界相当高的水准。
前置放大部分采用进口ECC803电子管共阴极式放
大电路,进口ECC802电子管担任SRPP作驱动放大;使本
机具有优美的声音和大动态表现。采用电子管与晶体管
混合型精密高压稳压电源,电压稳定性极高。交流纹波系
数极低,音色表现更有 "胆味"。
功放部分由日本东芝大功率晶体管组成0dB电流放
大电路,音色表现厚暖甜润,声音能量强大、大动态表现非
常澎湃,轻松驱动各种高级名牌扬声器。电子管电路交连
电容器为德国MCap品牌油浸电容和德国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/50v规格,
无论音质和音色都有上佳表现;对整机的音质和音色提高
起重要作用。
音量控制采用美国水晶公司制造的电子音量控制
工作模式设定开关按钮
按下开关时机器以甲类(CLASS A)工作模式运行(窗口显示红色);
复位时机器以甲乙类(CLASS AB)工作模式运行(窗口显示绿色)。
8
BOOST按钮
后级增益按钮,按下去为+2dB,复位时为0dB。
3
显示屏
显示机器的各种工作状态和数据。
4
遥控接收窗口
接收遥控器发出的红外线遥控指令信号。
6
表头显示窗口
刚开机时表板颜色显示为蓝色,当机器延时后进入工作状态表板颜色
显示为红色(CLASS A)或绿色(CLASS AB),由工作模式设定开关决定。
5
BASS(后级)按钮
后级低音按钮按下去为-0.8dB(30Hz),复位时为0dB。
7
电源开关按钮
此开关用于接通或切断整机交流电源。
1
音频输入选择旋钮
此旋钮是对六组不同的音频信号进行输入选择。
2
音量按钮
此旋钮用作音量控制;向右旋时音量增大,向左旋时音量减少。
注意:0dB为音量最大,-99dB为音量最小。音量设置在0-19dB时关机后不作记忆(重启后
音量会恢复在-40dB)。音量设置在-20-99dB时关机后重启会有记忆。
9

0403
03
后面板功能
/04
系统连接
/
12
3 4 56 7
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, 黑色为负极。
1
左声道输出接线柱
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, 黑色为负极。
2
平衡音频输入端子(BALANCED R)
此端子用于连接音源的右声道输出端子。(设有一组平衡输入端子)
3
不平衡音频输入端子(LINE 1、LINE 2、LINE 3、LINE 4)
此端子用于连接音源的输出端子。(设有四组不平衡输入端子)
4
后级音频信号输入端子(LINE 5)
此端子用于外接其他前置放大器音频输出端子。(本机可作为一台
两声道纯后级功率放大器使用)
5
平衡音频输入端子(BALANCED L)
此端子用于连接音源的左声道输出端子。(设有一组平衡输入端子)
6
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。
7
注意:
红色为正极,黑色为负极,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信号源(CD唱机)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。
(本机设有四组RCA音频输入端子)
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)
CD唱机
A-238 II功放
音箱
1
23
HF
LF
INPUT
BALANCED
SPEAKER
IMPEDANCE(4-8Ω)
SPEAKER
IMPEDANCE(4-8Ω)
MAIN INPUT
LINE 5
INPUT
BALANCED
INPUT
LINE 1 LINE 2 LINE 3 LINE 4
ANALOG OUTPUT
BALANCED BALANCED
RCA
HF
LF
不平衡接线法

0605
04
系统连接
/04
系统连接
/
CD唱机
前级
A-238 II功放
音箱 HF
LF
INPUT
BALANCED
SPEAKER
IMPEDANCE(4-8Ω)
SPEAKER
IMPEDANCE(4-8Ω)
MAIN INPUT
LINE 5
INPUT
BALANCED
INPUT
LINE 1 LINE 2 LINE 3 LINE 4
HF
LF
ANALOG OUTPUT
BALANCED BALANCED
RCA
INPUT OUTPUT
1
2
4
3
CD唱机
A-238 II功放
音箱
1
23
HF
LF
INPUT
BALANCED
SPEAKER
IMPEDANCE(4-8Ω)
SPEAKER
IMPEDANCE(4-8Ω)
MAIN INPUT
LINE 5
INPUT
BALANCED
INPUT
LINE 1 LINE 2 LINE 3 LINE 4
ANALOG OUTPUT
BALANCED BALANCED
RCA
HF
LF
注意:
红色为正极,黑色为负极,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信号源(CD唱机)的音频输出端子XLR(平衡)与左,右声
道输入端子RCA对应连接。
(本机设有一组RCA音频输入端子)
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)
平衡接线法 纯后级使用接线法
1信号源(CD唱机)的音频输出端子RCA(不平衡)与单独
一台前级音频输入端子RCA对应对接。
2前置放大器 RCA 音频输出端子与本机“MAIN INPUT
(LINE 5档)”音频输入端子连接，输入选择对应设LINE
5档。(此时本机作为两声道纯后级使用)
注意:
红色为正极,黑色为负极,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。
3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)
4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)

0807
05
遥控器
/05
遥控器
/
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
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。
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。
GAIN(前级增益):(增益按键)
用户可根据音源的输出电平高低来选择0dB或-8dB档位;
当音源输出电平过高时(超过2.5V),请选择-8dB档位。
1
BAL-L、BAL-R:(左右声道输出平衡度控制按键)
按动BAL-L键时,左声道音量增加;按动BAL-R键时,右声道音量增
加;此功能用作修正由于听音环境或音箱系统造成的左右声道音量
不平衡。控制范围为0至10dB但在正常使用情况下应调整为0dB。
2
MUTE:(静音按键)
按一下此键,机器停止信号输出;再按一下此键则恢复信号输出。
3
BALANCED、LINE 1、LINE 2、LINE 3、LINE 4、LINE5:
（信号输入选择按键）
分别为平衡、线路1、线 路 2、线 路 3、线 路 4、线 路 5(后级专用)。
4
▲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。
5
按键说明
2
5
4
31

1009
07
故障指导
/
06
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.电源开关未按下
1.音量旋钮在最小位置
2.输入信号线没有接好
3.音源未工作或音源不良
4.输入选择不对位
5.音箱连线未接好
1.机器负载过重
2.负载端短路
1.更换符合4-8Ω阻抗的音箱
2.关机并检查音箱线是否短接
1.将音量调整到适当位置
2.接好输入信号线
3.开启音源或更换其他音源
4.切换到对应输入位置
5.接好音箱线
1.接好电源线
2.请合格维修人员更换保险管
3.按下电源开关
1.一边信号线未接好
2.一边音箱线未接好
1.接好信号线
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
无声
显示屏不亮
显示屏亮
显示屏出现
“PROTECT”
有一边
声道无声
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

1211
08
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、GB/T10406-93、Q/SHYA01-1997
1.频率响应 . . . . . . . . .: 20Hz-20kHz±0.5dB 6.低电平输入灵敏度 . . . . . : 150mV
7.高电平输入灵敏度(LINE 5档) . . : 400mV
5.信噪比 . . . . . . . . . .: 90dB(宽带)
8.输入阻抗 . . . . . . . . .: 47KΩ
9.体积(W×H×D) . . . . . . . : 427×212×482(mm)
10.重量 . . . . . . . . . . . : 28.5kg
3.甲类输出功率 . . . . . . .: 100W+100W(8Ω)
4.谐波失真 . . . . . . . . .: ≤0.1%(1kHz 1W)
2.额定输出功率 . . . . . . . : 100W+100W(8Ω)
200W+200W(4Ω)

1413
EN
CONTENTS
Thank you for purchasing Hi-Fi products of Shengya Audio!
We believe that the unremitting pursuit of high-quality audio products is our responsi-
bility and your ideal.
In order to make A-238 II (Class A Balanced Hybrid Amplifier) better performance and
bring you greater pleasure, we recommend that you read this manual carefully before con-
necting and operating the system.
GRATITUDE
01/ CHARACTERISTICS ········································
02/ FRONT PANEL FUNCTION ·····························
03/ BACK PANEL FUNCTION ·······························
04/ REMOTE CONTROL ·······································
05/ SYSTEM CONNECTION ··································
06/ PRECAUTIONS ···············································
07/ FAULT GUIDANCE ··········································
08/ PARAMETERS ·················································
15
17
18
19
21
24
25
26
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

1615
01/ CHARACTERISTICS 02/ FRONT PANEL FUNCTION
A-238 II(Class A Balanced Hybrid Amplifier) is designed by Shengya feature on vacuum tube
and transistor hybrid power amplifiers. It adopts fully balanced Class A amplifier circuit recog-
nized by many international high-end audio product manufacturers and enthusiasts, so the
sound quality, tone, and sound field performance reach a fairly high level in the industry.
The pre-amplification part adopts the ECC803 tube common-cathode amplifier circuit, and
the ECC802 tube serves as the SRPP driving amplifier, which results in beautiful sound and
great dynamic performance. It adopts a hybrid precision high-voltage stabilized power supply.
The voltage stability is extremely high, while the AC ripple coefficient is extremely low.
The power amplifier part is made up of Toshiba high-power transistors to form a 0dB current
amplifier circuit. The sound is warm and powerful. It can easily drive a variety of advanced brand
speakers. The tube circuit cross-connect capacitors are German MCap brand oil-immersed ca-
pacitors and German WIMA brand MKP series high-end audio special capacitors. The filter ca-
pacitor 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 volume control adopts the electronic volume control chip CS3310 made by American
Crystal Company, which controls the error level between two channels within 0.5dB, offering
better control accuracy of the quadruple mechanical potentiometer in ±3dB.
The toroidal high-power transformer is filled with epoxy resin with a shielding box, which ef-
fectively reduces the vibration and noise interference. The AC power sockets are Japanese Furu-
kawa gold-plated, and the built-in fuse is Swiss Schulte brand. Two channels independently use
special audio filter capacitors and rectifiers, with a total capacity of up to 120,000 microfarads
and 32 high-power transistors to form 100W (8Ω) pure Class A output power per channel. In ad-
dition to the delicate and surging sound performance, the speaker terminal uses German WBT
brand products, while the balanced signal input terminal uses Swiss Nutrick brand products.
Another function of A-238II is as an independent power amplifier. You can use the LINE5
high-level signal input terminal to connect to other pre-amplifier.
A-238 introduces the CPU full-function control and data information screen display mode, so
that the advanced HIFI amplifier has entered the digital technology field. The full-function infra-
red remote control system is specially set up for users.

1817
02/ FRONT PANEL FUNCTION 03/ BACK PANEL FUNCTION
1 65 8
2 3 4 7 9
POWER
This button is used to turn on or off the AC power supply of the
whole machine.
1
INPUT
This knob is for input selection of six different audio signals.
2
A POWER
When the switch is pressed, the machine runs in CLASS A
working mode (the window shows red);
When reset, the machine runs in CLASS AB working mode (the
window shows green).
8
BOOST
Amplifier gain button, it is +2dB when pressed down, and it is 0dB
when reset.
3
SCREEN
Display various working status and data of the machine.
4
REMOTE CONTROL RECEIVING
Receive the infrared remote control command signal sent by the
remote control.
6
INDICATOR WINDOW
When the machine is turned on, the color of the table board is
displayed in blue. When the machine enters the working state after
a delay, the color of the table board is displayed in red (CLASS A) or
green (CLASS AB), which is determined by the working mode
setting switch.
5
BASS
Amplifier bass button is pressed down, it is -0.8dB (30Hz), and it
is 0dB when reset.
7
volume
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.
Note::0dB is the maximum volume,-99dB is the minimum volume. When the volume is
set at 0-19dB,it will not be memorized after shutdown (the volume will be restored to
-40dB after restarting). When the volume is set at -20-99dB,it will be remembered after
shutting down and restarting.
9
12
3 4 56 7
RIGHT CHANNEL OUTPUT BINDING POST
It can be connected to speakers with an impedance of 4-8Ω; there
are two sets of binding posts, which can be used for two-wire
split-tone connection; the red is the positive pole and the black is
the negative pole.
1
LEFT CHANNEL OUTPUT BINDING POST
It can be connected to speakers with an impedance of 4-8Ω; there
are two sets of binding posts, which can be used for two-wire
split-tone connection; the red is the positive pole and the black is
the negative pole.
2
XLA INPUT TERMINAL BALANCED R
This terminal is used to connect the right channel output terminal
of the audio source. (With a set of XLA input terminals)
3
RCA INPUT TERMINAL LINE 1.LINE 2.LINE 3.LINE 4
This terminal is used to connect the output terminal of the audio
source. (Four sets of unbalanced input terminals are provided)
4
POWER AMPLIFIER INPUT TERMINAL LINE 5
This terminal is used to connect other preamplifier audio output
terminals. (This machine can be used as a two-channel pure
power amplifier)
5
XLA INPUT TERMINAL BALANCED L
This terminal is used to connect the left channel output terminal
of the audio source. (With a set of XLA input terminals)
6
POWER OUTLET
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.
7

2019
04/ REMOTE CONTROL 04/ REMOTE CONTROL
Function Description
2
5
43
1
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.
GAIN
The user can choose the 0dB or -8dB gear according to the output
level of the audio source;
When the output level of the audio source is too high (over 2.5V),
please select the -8dB range.
1
BAL-L、BAL-R
Left and right channel output balance control button:
When the BAL-L button is pressed, the volume of the left channel
increases; when the BAL-R button is pressed, the volume of the
right channel increases; this function is used to correct the
unbalanced volume of the left and right channels caused by the
listening environment or the speaker system. The control range
is 0 to 10dB but should be adjusted to 0dB under normal use.
2
MUTE
Press this key once to stop the signal output; press this key again
to resume signal output.
3
BALANCED、LINE 1、LINE 2、LINE 3、LINE 4、LINE5
Signal input selection button:
They are balanced, line 1, line 2, line 3, line 4, and line 5 (for the
power amplifier).
4
▲VOLUME▼
Press this key to control the volume; "▲" to increase the volume,
and "▼" to decrease the volume.
5
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.

2221
05/ SYSTEM CONNECTION 05/ SYSTEM CONNECTION
CD PLAYERA238 II AMPLIFIERSPEAKER
1
23
HF
LF
INPUT
BALANCED
SPEAKER
IMPEDANCE(4-8Ω)
SPEAKER
IMPEDANCE(4-8Ω)
MAIN INPUT
LINE 5
INPUT
BALANCED
INPUT
LINE 1 LINE 2 LINE 3 LINE 4
ANALOG OUTPUT
BALANCED BALANCED
RCA
HF
LF
NOTE:
Red is positive and black is negative. When connecting the speaker
and the output terminal, please correspond to the same polarity,
otherwise it will affect the listening effect.
1The RCA audio output terminal of the signal source
(CD player) is connected to the left and right channel
RCA input terminals correspondingly.
(This machine has four sets of RCA audio input terminals)
2The 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)
3The 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)
RCA WIRING METHOD
NOTE:
Red is positive and black is negative. When connecting the speaker
and the output terminal, please correspond to the same polarity,
otherwise it will affect the listening effect.
1The XLA audio output terminal of the signal source
(CD player) is connected to the left and right channel
XLA input terminals correspondingly.
(This machine has one sets of XLA audio input terminals)
2The 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)
3The 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)
XLA WIRING METHOD
CD PLAYERA238 II AMPLIFIERSPEAKER
1
23
HF
LF
INPUT
BALANCED
SPEAKER
IMPEDANCE(4-8Ω)
SPEAKER
IMPEDANCE(4-8Ω)
MAIN INPUT
LINE 5
INPUT
BALANCED
INPUT
LINE 1 LINE 2 LINE 3 LINE 4
ANALOG OUTPUT
BALANCED BALANCED
RCA
HF
LF

2423
05/ SYSTEM CONNECTION 06/ PRECAUTIONS
PURE POWER AMPLIFIER WIRING METHOD
NOTE:
Red is positive and black is negative. When connecting the speaker
and the output terminal, please correspond to the same polarity,
otherwise it will affect the listening effect.
1The RCA audio output terminal of the signal source
(CD player) is connected to a preamplifier audio input
terminal RCA correspondingly.
2The RCA audio output terminal of the preamplifier is
connected to the "MAIN INPUT (LINE 5)" audio input
terminal of the unit,and the input selection corre-
sponds to the "LINE 5".
(At this time, this unit is used as a two-channel pure post-stage)
3The 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)
4The 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)
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.
HF
LF
INPUT
BALANCED
SPEAKER
IMPEDANCE(4-8Ω)
SPEAKER
IMPEDANCE(4-8Ω)
MAIN INPUT
LINE 5
INPUT
BALANCED
INPUT
LINE 1 LINE 2 LINE 3 LINE 4
HF
LF
ANALOG OUTPUT
BALANCED BALANCED
RCA
INPUT OUTPUT
1
2
43
CD PLAYERA238 II AMPLIFIER PREAMPLIFIERSPEAKER

2625
07/ FAULT GUIDANCE 08/ PARAMETERS
1.The volume knob is in the minimum position
2.The input signal line is not connected properly
3.The sound source is not working or the sound source is bad
4.Input selection misalignment
5.Speaker connection is not connected
1.The machine is overloaded
2.Short circuit on the load side
1.Replace speakers with 4-8Ω impedance
2.Turn off and check if the speaker cable is short-circuited
1.Adjust the volume to the appropriate position
2.Connect the input signal line
3.Turn on the audio source or change to another audio source
4.Switch to the corresponding input position
5.Connect the speaker cable
1.Connect the power cord
2.Ask qualified maintenance personnel to replace the fuse
3.Press the power switch
1.The power cord is not connected properly
2.AC fuse blown
3.The power switch is not pressed
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
THE SCREEN
IS DARK
THE SCREEN
IS BRIGHT
THE SCREEN
APPEARS
“PROTECT”
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
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、GB/T10406-93、Q/SHYA01-1997
6.Low level input sensitivity ·········· : 150mV
7.High level input sensitivity ········· : 400mV (LINE 5 )
8.Input Impedance ······················ : 47KΩ
9.Dimensions(W×H×D) ················ : 427×212×482(mm)
10.Weight ··································· : 28.5kg
1.Frequency response ················· : 20Hz-20kHz±0.5dB
5.Signal to noise ratio ·················· : 90dB(wideband)
3.Class A output power ················ : 100W+100W(8Ω)
4.Harmonic distortion ·················· : ≤0.1%(1kHz 1W)
2.Output power ··························· : 100W+100W(8Ω)
200W+200W(4Ω)

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