MPASeries
Class-DProfessionalAmplifiers
用户手册
MPA Series
Class-D Professional Amplifiers
MPA系列功率放大器
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
用户手册
重要安全事项和符号说明
1.阅读这些规定。
2.保存好这本使用手册。
3.注意所有警告。
4.遵守这些规定。
5.可使用软布及风枪进行清洁。
6.要注意不要形成热风循环。 按建议方法进行安装。
7.不要安装在热源附近，尽可能保证环境气温在35°C以下使用。
8.确保接地良好，不建议浮地使用。
9.保护电线防止被踩踏或挤压，尤其要注意插头、电源插座及其连接设备处。
10.必须按照以下开关次序来使用该产品：前级-功放（开）、功放（关）-前级。
11.通电前必须确保供电电压符合该设备的要求。
12.若输入信号并接超过三台功放，建议使用信号分配器，以确保输入信号不至失真。
13.不要将功放的某一个声道的输出接口接到另一个通道的输入接口。不要将功放的输出并联或串联到另一
台功放的输出接口来使用。
14.设计系统配置功放的时候，功放的功率应比音箱在相同阻抗的标称功率大50%-100%,应小心使用桥接模式。
15.在维修功放的时候，禁止在桥接状态下将示波器的探头连接到功放的输出端，以免损坏功放和示波器。
16.建议：1)由于输出到音箱的电流较大，建议使用质量有保证的NL4型音箱螺旋插头。
2)多台功放使用时应计算好合适的配电，以确保达到合格的使用环境。
提醒用户本手册中有重要的信息。
小心触电，非拥有相关资质的人员请勿擅自开盖维修。
警告
为避免着火或电击，不要将设
备暴露在雨中或潮湿的环境中。
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
3
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
用户手册
Class-DProfessionalAmplifiers
前言
欢迎
非常感谢您购买本公司产品 ,
MPA系列专业功放，操作简单、工作稳定、性价比高，
用途广泛。专为卡拉OK包房、语言扩声、中小型演出、
演讲等场合使用。为了更好的发挥产品性能，请在使用
前仔细阅读本手册。
拆包
请在拆开包装后，确认功放的外观没有在运输途中遭
到损坏。确认功放的预设电压和你所在地的交流电压
额定值匹配（详细信息见功放背板印刷）建议您保留
包装箱，以便在需要退还产品时使用。
重要的安全注意事项
本公司的产品设计已经考虑到安
全使用的要求，并遵照相关的国家的安全规定检验出
厂产品，只有合格的产品才能出厂销售。但由于本产
品内部有危险高压和电量，因此要求用户必须认真阅
读本手册的注意事项。如果产品跌落、凹入、浸湿或
者里面有部件松动，则会大大增加人被电击的危险。
当发生以上问题时，请马上切断电源 ，然后将本产
品送还指定的经销商进行检查维修！
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
4
MPASeries
Class-DProfessionalAmplifiers
用户手册
前面板功能介绍
吸风口
电源开关
机架安装孔
控制面板
Protect
Clip
任何一种保护电路动作时亮起
削峰/失真压限电路动作时亮起
输出信号幅度距满功率约为-5dB
输出信号幅度距满功率约为-10dB
输出信号幅度距满功率约为-20dB
信号指示灯
-5dB
-10dB
-20dB
Sig
开机后亮起
ON
增益控制器旋钮（调音量）
300°音量旋钮0/-80dB。
CH1-CH2
立体声/并接:CH1与CH2音量独立控制。
桥接模式:CH1同时控制两通道音量衰减
CH2音量控制失效。
对于正常使用，将控制器保持在最大(0dB)。
滤尘网清洁操作指引
在工程建造完成时，应对滤网进行首次清洁。
在往后的时间，应根据实际的情况，建议每季度
定期进行清洁一次。
不允许拆除该滤网继续使用本产品，否则将影响
本机的使用寿命。
在此情况下产生的故障，将被认定为脱保！
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
5
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
用户手册
Class-DProfessionalAmplifiers
后板功能介绍
电源插座
排风扇
功率输出端
信号连接端
音箱连接端
信号线连接端
信号输入端 INPUT
灵敏度选择开关
双通道模式下可工作在2~16欧
桥接模式下可工作在4~16欧
平衡XLR
接线方式
不建议桥接4欧长期使用，
这可能导致功放使用寿命
缩短或者产生故障！
模式选择开关
信号输出端 LINK
焊接质量很重要 !
虚焊或是焊接错误，
将可能影响到正常使用,
甚至产生故障。
黑
红
黑
红
黑色
红色
负极/黑色
CH1
正极/红色
正极/红色
CH2
直接连线，无需插头
音箱螺旋插头 Speakon（NL4）
负极/黑色
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
6
MPASeries
Class-DProfessionalAmplifiers
用户手册
系统连接实例
音源（信号源）
音箱
桥接模式
BLACK
RED
或
注：CH1输入有效。
并接模式
RED
BLACK
BLACK
RED
或
BLACK
RED
注：CH1与CH2输入有效。
立体声模式
RED
BLACK
BLACK
RED
或
BLACK
RED
注：CH1与CH2输入有效。
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
7
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
用户手册
Class-DProfessionalAmplifiers
功放安装配电配线
配线配电
放大器的电源供应作为一个非阻性负载，所以计算“伏特x安培=瓦”不会是正确的,同时因为其应用在非稳定
输出的音乐波形信号上，所以其实际的耗电量不能以固定的公式进行计算。
参考不同型号产品的耗散功率与供电/AC进行配线
建议用户搭配不低于以下的配线径规格，以获得更佳的综合性能。
标配电压：100-240V
配线径规格
型号
耗散功率
MPA0802
MPA1202
MPA2402
480W
800W
1100W
≥1.5mm2
≥1.5mm2
≥1.5mm2
当多台使用同一电源插板时，其供电电缆截面应根据总需求作出相应的增加，而插板内部线缆也需要确认能满
足电力的需求。
后板标示的电源电压(例：220V/240V必须在AC200~240V之间的)范围内。并且应尽可能令其稳定。
根据不同的供电电压，产品的输出功率会随电源电压高低变化而变化。
多台安装
当在同一电力供应的条件下，其总配电功率超过10kW时，建议采用三相配电。须使用三相五线制，禁止有
零线与地线共用的情况。
通电检查
首次通电必须用万用表测量电源电压，并确认是否符合产品的要求条件。
在首次通电时，请不要连接信号线和音箱线，您只需作简单的通电检查，确认其正常后请将电源关
闭。
安全地线之重要性
产品应用上建议您必须接地，以策安全。
若您没有及格的地线或不接地时，当人体接触产品其外壳，可能会感到有电击之感，甚至感到不安。为避免此
种情况的出现，请务必使用合格的地线将产品接地。
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
8
MPASeries
Class-DProfessionalAmplifiers
用户手册
功放的散热条件
堆叠安装
在工程竣工前，因为建造环境灰尘很多，
为保障散热环境，请安装产品时满足以下条件
而调试期间就会有大量灰尘积聚在滤尘
海绵中，令风路不畅，造成故障隐患。
若出现此情况，建议采用大功率吸尘机直
接清洁滤尘海绵，而且要每月做一次维护
从而保证其散热良好。
气
空
热
输入/输出接驳线缆不可堆叠在产品排风
扇口,请置于功放两侧捆扎好!
气
空
冷
气
空
环境气温应<35℃下工作
冷
非水平堆叠时，建议机尾排风口向上或
直向排风口
风短路的避免
防止排出的热风回送至前面吸风口。
安装强排设备
强制将热空气带走
气
空
热
在工程调试时验证机柜内气温，在极限条
件下，也应保持在35℃以下。
气
空
冷
气
空
冷
遮挡热空气
回流到前面吸风口
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
9
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
用户手册
Class-DProfessionalAmplifiers
功放使用电平的调整
开、关机步骤
开机
音源设备
调音台
周边设备
功放
关机
对于大功率系统，次序尤为重要，
不按该顺序将有可能损坏器材。
为此建议您采用电源管理器来
管理。
系统电平调整
以下调整过程，功放应处于空载的状态
流程：
调音台
处理器
CLIP
12
6
3
0
3
6
12
20
40
该调试流程为常规过程，为了更准
确地调整系统，应聘请专业工程师
来进行该项操作。
12
0
12
0
CLIP
0
3
6
9
12
15
18
40
LINE
GAIN
-10 +40
GAIN
INPUT
LEVEL
CH
MAIN
LEVEL
播放稳定的粉
红噪声信号
设定通道推杆
送到主输出幅
度为0dB水平
设定主输出推
杆输出幅度为
0dB水平
主输出幅度
设定应该显
示为：0dB
调整处理器的
输入电平，在
以上图形的幅
度上下
调整输入增益
旋钮
处理器
功放
调音台
CLIP
0
3
6
CLIP
12
6
LINE
GAIN
0
3
9
0
12
15
18
40
3
6
12
20
40
-
+12dB
-3dB
-10 +40
GAIN
OUTPUT
LEVEL
LEVEL
LEVEL
调整处理器的输出
电平，在以上图形
的的幅度上下
调整音量旋钮令输
出电平在以上图形
的幅度内
往回调整输入增益
令主输出显示少3dB
这是为确保有一倍余
量而设
带载试听
从较小音量位置开始调整音量旋钮，在证明音箱发出正常的音乐后，
方进一步将音量开大。在音箱声压输出接近饱和时（注意此高声压
当中的风险），功放的电平指示灯应该在CLIP灯亮起之前，并要确
保CLIP灯不能频繁亮起。
该步骤必须请有经验的专业人士
操作，未有十足之把握敬请小心
操作！
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
10
MPASeries
Class-DProfessionalAmplifiers
用户手册
技术指标
型号
MPA0802
MPA1202
MPA2402
功率
8Ω立体声功率
4Ω立体声功率
2Ω立体声功率
8Ω桥接功率
300Wx2*
500Wx2**
750Wx2**
1000W**
1500W**
500Wx2*
850Wx2**
1250Wx2**
1700W**
2500W**
700Wx2*
1250Wx2**
1600Wx2**
2500W**
4Ω桥接功率
3200W**
其他参数
频率响应
20Hz-20KHz(+0/-1dB)
总谐波失真
信噪比
≤0.09%
≥100dB
≥500
≤0.09%
≥100dB
≥500
≤0.09%
≥100dB
≥500
阻尼系数
≥10V/μs
≥10V/μs
≥10V/μs
转换速率
输入灵敏度
输入阻抗(平衡/不平衡）
电压增益
0.775/1.0V/32dB
20kΩ/10kΩ
36dB
38.2dB
39.7dB
输出类别
Class D
Class D
Class D
冷却
从前到后抽风
保护功能
超压保护、RF、VHF、软启动、直流、短路、过载、削峰/失真压限、过热、开机音量渐大
连接器
输入部分
输出部分
平衡输入XLR母插座/平衡并接XLR公插座
BINDING POST（红黑柱）/SPEAKON（音箱螺旋座）
使用功能
面板功能
后板功能
电源开关/音量控制旋钮/电源指示/信号指示/-5dB/-10dB/-20dB/ 削峰压限指示/保护指示/超温保护
立体声\并接\桥接选择开关、灵敏度选择开关
尺寸和重量
产品外形尺寸(Wx Lx H) (mm)
483x305.5x89
560x420x170
7.8kg
483x305.5x89
560x420x170
8.1kg
483x305.5x89
560x420x170
8.5kg
外包装尺寸(Wx Lx H) (mm)
毛重
电源
13A电源线
注意：1. *,此功率是使用40ms脉冲1kHz正弦波在1%总谐波失真下测量得出;
2. **,此功率是使用20ms脉冲1kHz正弦波在1%总谐波失真下测量得出 。
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
11
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
用户手册
Class-DProfessionalAmplifiers
故障排除
通电后，无任何反应
功放保护指示灯（PROT）点亮
马上用万用表测量插座是否有电，在没有万用表时可用试
电笔，但必须灯泡显示明亮，否则可怀疑电压不正常。若
插座电压正常，供电无怀疑后，通电的功放仍然无任何反
应，则可判断该功放有故障，需要专业人员进行进一步故
障判断。
此指示灯点亮表明功放进入保护状态。形势不妙！
1、可能是温度过高、有高于4K的连续正弦波输出超过
1秒、输出短路或接近短路等。以上情况可恢复的。并非
故障。等恢复后可继续使用。但过热会等待较长时间才
可恢复。并且出现过热时就必须检查产品的风扇是否运
作正常，空间温度是否过高等，须排除问题后才
可继续运作。若怀疑音箱短路，可以用万用表测量音
箱线两端直流电阻是否低于2欧甚至1欧。（因电阻较小，
为保证测试精度，请校准万用表后再测量）
功放无声音输出
1、首先判断输入的信号是否正确
卡侬XLR的2/3脚有无反接的可能，地屏蔽线是否连接
可靠。跟据输入线路的设计不同，可能在以上有些产品会
表现正常，而有些则无声，请必须按照2+、3-的方式连
接。不可以采用比对其他功放（包括同厂产品）的方式
判断。
2、此灯常亮，不可恢复
此类情况一般为功放本身故障导致，请联系维修人员跟进。
有交流声（哼声或称之为电流声）
1、功放不插入任何信号就有交流声
2、面板指示信号灯不亮
排除信号线问题后，若功放无输入信号反映，可判断功放
本身可能存在故障，需专业人员进行进一步故障判断。
请将功放搬离于系统电源地线隔离的位置继续测试，只
连接火零N/L，不连接地线。若输出还是有交流声，可判断
为产品本身有问题，请与维修人员联系。
3、输入信号正常但仍无声
正面的信号指示灯是否有闪动和根据音量大小而跳跃，若
正常，而无声音输出，立即检查连接的NL4插头是否连接
正确（±1，±2的连接问题）是否连接牢靠。若以上都无
问题，仍然无声，可以尝试其它通道观察是否有相同的现
象。若还是一样，请立即更换另一个NL4插头再作连接尝试。
跟据经验，可能有某些插头和该产品的插座接触不良
导致的。
2、连接系统后有交流声
此现象为系统各单元设备的地电位不同而产生的。多数出
现在供电为三相电时，各设备连接不同的相线，甚至不同
上庄电源，零线带电导致，并非功放故障。
解决办法超出本说明书叙述范围，这里附赠解决经验，
仅供参考，本厂不对此叙述负责！
A、梳理用电，尽可能使用同一配电箱的电源。
B、在必须接地的情况下，将不同的接地点强迫接为
一点，在此动作前，请判断地线电位必须为零，若地线
本身带电，则表明地线可能与零线相连。请先解决此问题。
C、我们不建议浮地使用设备。
功放输出声音失真
1、失真表现为小声音已经很明显能听出声音有破裂声在
排除信号本身和音箱的问题后，可判断为该功放可能存在
故障。需专业人员进行进一步故障判断。
2、某个频段失真
以下情况表示放大器需要维修
1.产品冒烟或者发出严重烧焦味而不能使用时
2.机箱严重凹陷或者变形
3.产品浸入液体中
4.内部部件松动
首先判断音箱本身是否能承受该功放的输出功率，一般在
95~105分贝时判断，再大的音量输出不作评论。本篇幅
只讨论功放自身问题的排除。若是在中频段声音有轻微破
裂尾音，并且在音量越小时表现为越明显，可判断为功放
可能有交越失真，此失真声音比较容易和音箱本身高频激
励器故障混淆，请做出判断前最好再连接其它判断为正常
性能的音箱比较测试一下。
5.加电时交流断路器自动跳开或保险管熔断
3、大声压时失真
在小声压时表现正常的情况下，首先判断音箱对所播放音
乐信号的大动态时的承受能力。请在合适的音量下聆听判
断，若功放削峰指示灯（CLIP）时常亮起，请再降低音量
后判断。音箱和功放都有适用的范围，请在所能接受的范
围内使用，在超大音量下失真则可能功放及音箱都已经进
入饱和状况，请适当降低音量使用。
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
12
MPASeries
Class-DProfessionalAmplifiers
用户手册
产品物质拆分表
为满足中国《电子信息产品污染控制管理办法》（信息产业部第39号令）的相关规定和要求，现对产
品中有害物质，按部件分类，声明如下：
有毒有害物质或元素
部件名称
六价铬
（Cr(VI)）
多溴联苯 多溴二苯醚
（PBB） （PBED）
汞（Hg）
铅（Pb）
镉（Cd）
机箱
主板模块
电源模块
I/O板模块
控制模块
灯板
备注：
○：表示该有害物质在该部件所有均质材料中的含量均在SJ/T11363-2006规定的限量要求下
×：表示该有害物质至少在该部件的某一均质材料中的含量超出SJ/T11363-2006规定的限量
要求。
在中华人民共和国境内销售的电子信息产品上将贴上有“环保使用期限”（EPuP）符号。
圆圈中的数字代表产品的正常环保使用年限。
图示：
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
13
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
Table of contents
Important Safety Instruction and symbol description...........................................................14
Foreword................................................................................................................................................15
Front panel functions........................................................................................................................16
Rear panel functions..........................................................................................................................17
System connection cases..................................................................................................................18
Wiring and AC power supply...........................................................................................................19
Thermal Dissipation............................................................................................................................20
Power Level adjustment....................................................................................................................21
Specifications........................................................................................................................................22
Troubleshooting...................................................................................................................................23
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
14
MPASeries
Class-DProfessionalAmplifiers
Important Safety Instruction and symbol description
1.Read these instructions.
2.Keep this user manual.
3.Pay attention to all the notice.
4.Comply with these instructions.
5.Clean with soft cloth, or blow with hyperbaric air.
6.Warning:Avoid the formation of hot air circulation. Installation as suggested way.
7.Do not install near heat, make sure the application temperature is below 35°C.
8.Ensure that the grounding is valid, floating ground is not recommended.
9.Protect the wire from being trampled or extruded, especially the plug, socket and the connector of it.
10.Make sure the startup and turnoff procedure: Pre-amp - Amplifier (Power on) Power amplifier (off)
-Pre-amp.
11.Power supply voltage must be in accord with the requirement of the equipment before use it.
12.Signal distributor is advised to be used when the input signal paralleled with more than 3 amplifiers,
to ensure the input signal without distortion.
13.Don't connect the output interface of one channel to the input interface of another channel in the
power amplifier. Don't connect one power amplifier to another one by connecting their output in
series or parallel connection.
14.When equip the audio equipments, the power of the power amplifier should be 50%-100% more
than the loudspeaker power. Be careful when in bridged mode.
15.When maintenance, don't connect the probe of the oscilloscope to the output interface under
bridge mode in case of damaging the power amplifier and the oscilloscope.
16.Suggestions:
1) Good quality Nl4 Speakers screw plug is advised.
2) Power distribution system should ensure the safety of applications of more than one amplifier.
The exclamation point triangle is used to alert the user to important operating or
maintenance instructions.
The lightning bolt triangle is used to alert the user to the risk of electric shock.
non-professional qualified technicians do not open TOP OR BOTTOM COVERS
for maintenance
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS
TO RAIN OR MOISTURE.
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
15
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
Foreword
Welcome
Thank you for purchasing our products.
The MPA series professional power amplifier, simple
to operate、stable、high performance-cost rate.
Special design for KARAOK ROOM、sound
reinforcement, small performances, lectures and
other places. Please take the time to study this
manual so that you can obtain the best possible
service from your amplifier.
Unpacking
Please unpack and inspect your amplifier for any
damage that may have occurred during transit.
Confirm the preset voltage of the power amplifier
matches your local voltage rating ( Please refer to
the print on the rear panel for detailed information).
We also recommend that you save all packing
materials so you will have them when need to
return the power amplifier.
Important safety precautions
Our products has already taken the safe requirement
in to consideration and all the finished products have
been tested under the requirement of the government
before sale. Due to the inner dangerous high voltage
and electricity, we strongly recommend you read all
instructions, warnings and cautions contained in this
manual. It will increase the chance of getting shock by
the electricity if the product falls down, recess in the
appearance, soaked or there were some parts loose
internal. If there are problems above, please turn off
power immediately and send the defective units to
local distributor for service.
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
16
MPASeries
Class-DProfessionalAmplifiers
Front panel functions
Power switch
Suction
Mounting hole
Control panel
Protect
Illuminates when either protection
circuit action.
Clip
-5dB
Illuminates when compressor / limiter is
protecting the amplifier from input overload.
Illuminates when output signal around -5dB
than full power.
-10dB
-20dB
Illuminates when output signal around -10dB
than full power.
Illuminates when output signal around -20dB
than full power.
Sig
ON
The signal light
Illuminates when the amplifier start.
CH1-CH2
Gain Controller Knob
300°volume knob from 0 to -80dB.
Stereo/Paralle Mode: volumes of CH1 and CH2
control independently.
Bridge Mode: CH1 knob controls both volumes.
Ch1 stops working.
For normal operation, please keep the
controller at max (0 db).
Cleaning guide of the dust filter
The first time cleaning of the strainer mesh
should be right after installation.
Recommend to clean the strainer mesh
quarterly.
Please do not run the product without the
dust filter, or it makes the service
life of the product shorten.
Such condition will be considered as
no warranty.
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
17
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
Rear panel functions
Circuit breaker
FAN
Signal
connectior
Amp output
The speaker connector
Signal connection
Signal input INPUT
It can work from 2-16ohm in
stereo or parallel mode. It can
work good from 4ohm to
16ohm In bridge mode
Sensitivity
selector switch
INPUT
Balanced male XLR
We don't suggest you use the
amplifier under 4ohm bridge
mode for a long time, it will
short its normal use life or have
some unnecessary failure.
Mode
selector switch
Signal output LINK
The quality of your
soldering is very
important
Virtual welding or
soldering errors,
Would be likely to
affect the normal
Use or even failure
BLACK
RED
BLACK
RED
BLACK
RED
negative/black/nero
CH1
positive/red/rosso
positive/red/rosso
Direct connection without plug
Speakon（NL4）
CH2
negative/black/nero
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
18
MPASeries
Class-DProfessionalAmplifiers
System connection cases
Signal source
Speaker
Bridge mode
BLACK
RED
or
Remark：Inputs from CH1 is effective.
Parallel mode
RED
BLACK
BLACK
RED
or
BLACK
RED
Remark：Inputs from CH1 is effective.
Stereo mode
RED
BLACK
BLACK
RED
或
BLACK
RED
Remark：Inputs from CH1 and CH2 are effective.
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
19
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
Wiring and AC power supply
Power & Wiring distribution
The amplifier power supply isn't a non-resistance load and its use on unstable music signal, so it can
not calculate with "Voltage x Ampere=Watt" ,the actual power consumption can not be fixed formula .
Referring to the power dissipation and power supply/AC of different product for wiring
We suggest the users to match not less than the following wiring size specifications, to obtain the
better comprehensive properties.
The Standard Voltage：100-240V
Dissipation
Power
Model
Cable size
MPA0802
MPA1202
MPA2402
480W
800W
1100W
≥1.5mm2
≥1.5mm2
≥1.5mm2
When you use 1 power supply socket for many amplifiers, the power cable of the outlet should be
bigger and also the internal cable of socket.
Please check the power voltage remark in the rear panel:
220V/240V = voltage range between AC200V to 240V.
Stable power supply voltage can ensure the amplifier works steadily.
The output power will be adjusted according to the difference voltage of power supply
More than one installation
When in the same AC power supply and its total power is more than 10kW, we suggest you use three
phase and five wires in power distribution and the null wire can not use with Ground wire together.
Check after powered
For the first time powered, you have to use the multimeter to measure voltage, and confirm
whether meet the requirements of the product. And do not connect signal and speaker after
you confirm everything is ok, then power off the amplifier.
The importance of Ground wire
You should connect Ground for safety use.
If you don't have qualified Ground connection or not use the Ground, you may have a electricity shock.
To avoid such thing happen, please connect Ground when you use.
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
20
MPASeries
Class-DProfessionalAmplifiers
Thermal Dissipation
Stack installation
To ensure the cooling environment, please meet the following condition
In order to have a good heat
R
I
dissipation condition for amplifier,
please clean the filter after you finish
your install, because the dust in filter
will stop the air vent, it's not good for
the heat dissipation. And you should
clean the filter net every month.
T A
O
H
R
I
L A
O
O
C
R
I
L A
O
O
C
The ambient temperature should
be lower than 35℃ while running
the amplifier
To avoid heat protection
To prevent the hot air back to front air vent
If use in Non-horizontal stack, we
suggest the rear exhaust outlet up
or straight to the vents of the room
Install exhaust blower
take the hot air away
R
I
T A
O
H
R
I
L A
Try your best to keep the temperature
under 35℃ even in extreme condition
O
O
C
R
I
L A
O
O
C
Keep hot air will not flow
back to the front air vent
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
21
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
Power Level adjustment
Procedure
Power On
Source
Sound console
Peripheral devices
Power Amplifier
Power off
For high power system, the
Power-on order is very important,
not in the order is likely to damage
the equipment. Therefore we
suggest that you use the sequence
power device.
Power Level Adjustment
Power amplifier should be in the condition of no load in the
following adjustment process:
Process：
Mixer
Processor
CLIP
12
6
3
0
3
6
12
20
40
12
0
12
0
CLIP
0
3
6
9
12
15
18
40
This is a normal step to adjustment,
for more professional adjustment
you should have a professional
person to do that.
LINE
GAIN
-10 +40
GAIN
INPUT
LEVEL
CH
MAIN
LEVEL
Input the
stable pink
noise
Adjust input
gain
Put the line
output to 0dB
Put the main
output to 0dB
The main output
amplitude set
should be
displayed
as: 0 db
Adjust the
input level of
processor like
the above
picture
Processor
Amp
Mixer
CLIP
CLIP
0
3
6
LINE
GAIN
12
6
3
0
9
0
12
15
18
40
3
6
12
20
40
-
+12dB
-3dB
-10 +40
GAIN
OUTPUT
LEVEL
LEVEL
LEVEL
Adjust the output level of
processor, the range like
the above picture shows
Adjust the volume knob
and make the output level gain to make the main
within the range as above
picture shows.
Then adjust the input
output less 3dB.
This setting is to ensure
twice power.
Music Audition
Adjust the volume from very small to loud slowly, after you confirm
the sound is normal then make it more louder. When the speaker
output is close to its limit, the CLIP light will lights up and you
should turn down your volume now, don't let the CLIP lights on long
time, it means over load, may damage the system.
This step should operated by
professional person, if you don't
know how to do, please be careful!
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
22
MPASeries
Class-DProfessionalAmplifiers
Specifications
MPA0802
MPA1202
MPA2402
Model
Output power
8Ω stereo
4Ω stereo
2Ω stereo
8Ω bridge
4Ω bridge
300Wx2*
500Wx2**
750Wx2**
1000W**
1500W**
500Wx2*
850Wx2**
1250Wx2**
1700W**
2500W**
700Wx2*
1250Wx2**
1600Wx2**
2500W**
3200W**
Other Specifications
Frequency response
20Hz-20KHz(+0/-1dB)
THD+N
≤0.09%
≤0.09%
≥100dB
≥500
≤0.09%
≥100dB
≥500
S/N rate
≥100dB
Damping factor
≥500
≥10V/μs
0.775/1.0V/32dB
20kΩ/10kΩ
36dB
≥10V/μs
≥10V/μs
Slew rate
Input sensitivity
Input impedance(bal/unbal)
Voltage gain (8 ohm）
38.2dB
39.7dB
Output circuitry
Cooling
Class D
Class D
Class D
Air flow from front to rear
Soft start, VHF, DC, short circuit, over load, clip limit, over heat, progressive volume
Protection
Connection
Input
Balance input XLR-F, Balance output XLR-M
Two red and black Binding posts, Nl4 SPEAKON
Output
Function
Front panel
Front panel indicator: Working indicator, Signal/Clip/Protection/Power on/-5db/-10db/
-20db / volume control knob
Rear panel
Sensitivity selection switch、stereo/parallel/bridge/Cross-over selection switch
Dimensions/Weight
Product Dimension(mm)
Packaging Dimension(mm)
G.W.
483x305.5x89
560x420x170
7.8kg
483x305.5x89
560x420x170
8.1kg
483x305.5x89
560x420x170
8.5kg
Power Supply
13A Power Cord
Remark：
1、*,The power is tested under the condition of 40ms burst,1kHz sine wave and 1% THD
2、**,The power is tested under the condition of 20ms burst,1kHz sine wave and 1% THD
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
23
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
Troubleshooting
The protection light blinks
After powered without any response
Measure the outlet with a multimeter to check if there is power
available and when no multimeter, you can have a test pencil.
If the power supply is normal and the amplifier still no response
when powered then there is something wrong with the
amplifier, need professional person to check it.
When the PROT light works, the amplifier into the
protection mode.
1.Maybe the temperature is too high or output short or near
short and they are not failure they can recovery after you can
use it normally. But over heat will take more time to recovery.
Also when over heat happened you should check the fan and
the temperature of the install environment, if does you should
solve the problem then can use amplifier. If you think the
speaker was short, you can with a multimeter to check if the
resist is lower than 2 ohm or 1 ohm with DC(Please calibrate
the multimeter to measure for accuracy because of the small
resistance).
No signal output
1.Frist check if the signal input is right.
Check the connect of XLR, if the 2 and 3 reverted or the
ground is reliable. Different circuitry design will have different
connect way of the XLR, please follow the 2+、3- to soldering.
It can not be judged by comparing with other amplifiers
(including other amplifiers in the same factory).
2. If the PROT light always light up then it should be the
problem of amplifier, you should send it back to professional
person for repair.
2.The signal light don't lights up
If all the signal input is fine and the signal light don't lights up
then may the amplifier has failure, you need to ask the
professional person to check it.
Hum in the system
1. Hum exists even when there is no signal
Please keep the amplifier away from earth wire of power supply
cables, just connect the fire wire and zero wire, no ground wire.
If the hum is still existing, it can be judged that there are some
problems in the amplifier. Please get in touch with professionals.
3.Signal input normal but no sound
The signal light will flash with the change of input Volume,
but now sound out, then you can check the connect of speakon
if it is connect good and the wires are connect right(some times
the problem of the wires connect, check its±1 and ±2 connect),
after the check above if still no sound out, please change a
speaker cable and check again. Because some times also caused
by the bad quality of the Speakon connector problem of the
amplifier.
2. Hum exists when the system is completely connected
This is caused by the different ground voltages in difference
devices in the system, mainly happens when the power supply
is under three-phase distribution condition, each device is
connected to different phase. This is not caused by amplifier.
Through experiences, it may caused by the bad connection
of some plugs and the socket.
Solution experiences, just for reference
A. Combing the electricity, the power distribution box using the
same one for all if possible.
B. Make sure the grounding wire potential is zero and force the
different grounding wire to the same level, if the grounding
wire Itself charged, indicates that the wire may be connected
with the zero line. Please solve this problem.
Output sound distortion
1.After check the signal and loudspeaker they are fine and still
can hear distortion when small sound, then may the amplifier
has failure, need professional person to check it.
C. If unavailable above, then only to disconnect the ground
wires of all devices, which helps to reduce the AC. But this is
not meet the safe use of electricity, users must know what
will happen if to do in this way. We do not recommend the
floating use.
2.Some frequency band has distortion
First, check if the loudspeaker already overload, normally
judge it in 95~105dB for higher SPL we don't comment here.
Here we just think about the failure recovery of the amplifier.
If in the middle have some rupture sound and more smaller
volume more obvious, then it should be crossover distortion
of the amplifier and this kind of distortion is easy to confuse
with the failure of loudspeaker itself. If the amplifier have
problem then you should send back to the manufacture for
repair.
The amplifier is required maintenance in the
condition below:
1. If the amplifier smokes or smells burning.
2. If the cabinet has severe indentation and deformation
3. If the amplifier are dipped into the water
4. If the internal components loosen
3.Distortion is High SPL
If the sound is normal when small volume and then you need
to check the limit SPL of the loudspeaker. You can listen it in
suitable volume and if clip light works, then you need reduce
the output. Both loudspeaker and amplifier have limit, you
should use them in their limit if in very high SPL they have
distortion you should take care of them and reduce the output
to the right position.
5. If AC breaker skips out when current increases.
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
24
MPASeries
Class-DProfessionalAmplifiers
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
25
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPASeries
Class-DProfessionalAmplifiers
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
26
MPASeries
Class-DProfessionalAmplifiers
1601 JackMckayBlvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax:800.765.3435
27
Specificationsaresubjecttochangewithoutnotice.
以上参数如有更改，恕不另行通知。
MPA Series
Class-D Professional Amplifiers
EXCEPT TO THEEXTENT THAT APPLICABLELAWPREVENTS THELIMITATION OF CONSEQUENTIALDAMAGES FOR PERSONAL
INJURY, ATLAS SOUNDSHALL NOT BELIABLEIN TORT OR CONTRACT FOR ANYDIRECT, CONSEQUENTIALOR INCIDENTAL
LOSS OR DAMAGEARISINGOUT OF THEINSTALLATION, USEOR INABILITYTO USETHEPRODUCTS. THEABOVEWARRANTYIS
IN LIEUOF ALL OTHERWARRANTIESINCLUDINGBUTNOT LIMITED TO WARRANTIESOF MERCHANTABILITYANDFITNESS
FOR A PARTICULARPURPOSE.
Service
ShouldyourHPA Series Multi-ImpedanceAmplifierrequire service, please contacttheAtlasSound warrantydepartmentat
1-877-689-8055, ext. 277orsupport.atlassound.comtoobtainan RAnumber.
AtlasSoundTechSupportcanbe reachedat1-800-876-3333orsupport.atlassound.com.
Visit our website atwww.AtlasSound.comto see otherAtlasproducts.
©2015AtlasSound L.P. All rightsreserved. AtlasSound is a trademarkof AtlasSound L.P.
All othertrademarksare theproperty of theirrespectiveowners. ATS006810 RevA 11/15
1601 Jack Mckay Blvd, Ennis,Texas 75119, USA
Telephone: 800.876.3333 • Fax: 800.765.3435
28
|