Kenwood KAC-M846 Car Amplifier User Manual


 
SPEAKER
LEVEL INPUT
INPUT
SENSITIVITY
[
V
]
0.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
50.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
5
LINE IN
BA
L
R
A chB ch B ch
150
100
80
50
FILTER
HPFOFF
LPF
FREQUENCY
[
Hz
]
A ch
FILTER
LPFOFF
B ch
Troubleshooting guide
What might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring.
Before calling service, first check the following table for possible problems.
PROBLEM POSSIBLE CAUSE SOLUTION
No sound.
(No sound from one
side.)
(Blown fuse.)
• Input (or output) cables are disconnected.
• Protection circuit may be activated.
• Volume is too high.
• The speaker cord is shorted.
• Connect the input (or output) cables.
• Check connections by referring to
<Protection function>.
• Replace the fuse and use lower volume.
• After check the speaker cord and fixing the
cause of the short, replace the fuse.
The output level is too
small (or too large).
• The input sensitivity adjusting control is
not set to the correct position.
• Adjust the control correctly referring to
<Controls>.
The sound quality is
bad.
(The sound is distorted.)
• The speakers wire are connected with
wrong ª/· polarity.
• A speaker wire is pinched by a screw in
the car body.
• The switches may be set improperly.
• Connect them properly checking the ª/·
of the terminals and wires well.
• Connect the speaker wire again so that it is
not pinched by anything.
• Set switches properly by referring to
<System examples>.
故障检修
有时被认为是故障的现象,其实是因微小的操作或配线失误而造成。 在要求维修之前,请参照下表稍做检查为盼。
现象 原因 排除方法
没有声音
(保险丝跳断)
· 输入(或输出)缆线未连接。
· 保护线路可能被触发。
· 音量过大。
· 扬声器电线短路。
· 连接输入(或输出)缆线。
· 参考 <保护功能> 一节,检查连接状况。
· 请更换保险丝,减小音量。
·
确认扬声器线,解除短路原因后,更换保险丝。
输出电平过低(或过高) · 输入灵敏度调节不当,没有位于妥当位置。 · 调节该控制器。请参考 <控制>。
声音质量很差
(声音失真)
· 扬声器缆线的极性
ª/·连接错误。
· 扬声器缆线的一根被车体螺钉压迫。
· 开关的设定可能不妥。
· 请将缆线的极性ª/·连接正确。
· 重新连接缆线,使之不再受螺钉压迫。
· 请参考 <系统配置实例>,将开关正确设置。
System examples /
系统配置实例Connection / 连接
Controls /
控制
BRIDGED
LEFT
P.CONBATT.
POWER IN
FUSE [25A] FUSE [25A]
s
SPEAKER
LEVEL INPUT
INPUT
SENSITIVITY
[
V
]
0.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
5MAX
]
LINE IN
BA
L
R
B ch
FILTER
HPFOFF
A ch
7 RCA cable or Speaker level input connection
7 RCA连接线或扬声器电平输入连接
Center unit (CD receiver, etc.)
中心装置(CD 接收机等)
Power control wire
电源控制缆线
2 Parts included
配件
RCA cable
RCA 缆线
RCA cable connections / 连接RCA 缆线
Genuine-accessory car stereo
(No line output center unit etc.)
原装车用立体声(没有 线输出的中心装置等)
产品中有毒有害物质或元素的名称及含量
部件名称
有毒有害物质或元素
(Pb)
(Hg)
(Cd)
六价铬
(Cr(VI))
多溴联苯
(PBB)
多溴二苯醚
(PBDE)
安装基板 × ×
框架 × ×
其他(附件) × ×
○:
表示该有毒有害物质在该部件所有均质材料中的含量均在 SJ/T11363-2006 标准规定的限量要求以
下。
×:表示该有毒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 标准规定的限量
要求。
该标识中表示的数字为自生产日期开始对环境的保护期限、表示不会因产品中含有的有毒
有害物质或元素的外泄造成环境污染、以及对人体或财产造成严重损害的年数。
该环境保护期限并不是对于性能、功能的保证期限。
在产品及电池等正常使用结束、进行废弃时,请遵守各地方政府的法律和规定予以处理。
表示例
NOTE
Do not connect cables and leads to both RCA cable
input jacks and the speaker level input terminals
simultaneously, for this may cause malfunction or
damage.
不可同时连接缆线和引线到 RCA 缆线输入端 子及扬
声器输入端子。否则,将造成误动作 或损坏。
规格
规格可能会变更,恕不另行通知。
音频部
最大输出功率 ...................................720 W (180 W × 4)
额定输出功率 (+B = 14.4V)
普通 (4 Ω) (20 Hz
20 kHz, 1.0 % THD) ........60 W × 4
普通 (2 Ω) (1 kHz,
1.0 % THD) .......................90 W × 4
桥接 (4 Ω) (1 kHz,
1.0 % THD) .....................180 W × 2
扬声器阻抗 ....................................................
2 Ω - 8 Ω
4 Ω
- 8 Ω (桥接)
频率响应 (+0, 3 dB) ........................................5 Hz - 50 kHz
灵敏度 (RCA)...................................................... 0.2 V - 5.0 V
信噪比 ........................................................................... 95 dB
输入阻抗 .................................................................
10 kΩ
低通滤波器过滤频率 (-18 dB/oct.) (B声道)
.........................................50 Hz200 Hz (可变)
高通滤波器过滤频率 (-12 dB/oct.) (A声道) .................... 80 Hz
共同
使用电压 ....................................... 14.4 V (允许11 - 16 V)
消耗电流 ...................................................................
35 A
安装尺寸(宽×高×深) ..................330 × 55 × 215 mm
重量 .................................................................
2.6 kg
Specifications
Specifications subject to change without notice.
Audio section
Max power output ....................................................720 W (180 W × 4)
Rated power output (+B = 14.4V)
Normal (4 Ω) ..............60 W × 4 (20 Hz – 20 kHz, ≤ 1.0 % THD)
Normal (2 Ω) ...................................90 W × 4 (1 kHz, ≤ 1.0 % THD)
Bridged (4 Ω) ...............................180 W × 2 (1 kHz, ≤ 1.0 % THD)
Speaker impedance .....................................................................2 Ω – 8 Ω
4 Ω – 8 Ω (Bridged)
Frequency response (+0, –3 dB)...............................5 Hz – 50 kHz
Sensitivity (RCA)........................................................................ 0.2 V – 5.0 V
ignal to noise ratio ................................................................................95 dB
Input impedance ...................................................................................10 kΩ
Low pass filter frequency (-18 dB/oct.) (B channel)
.....................................................................50 Hz – 200 Hz (variable)
High pass filter frequency (-12 dB/oct.) (A channel) ............80 Hz
General
Operating voltage ................................ 14.4 V (11 – 16 V allowable)
Current consumption ...........................................................................35 A
Dimensions (W × H × D) ...................................330 × 55 × 215 mm
Weight ..........................................................................................................2.6 kg
This is a 4 channel amplifier including
2 stereo amplifiers in a body. One
amplifier is referred to as amplifier A
and the other is amplifier B. This unit
is compatible with a large variety of
systems by combining the switches
and functions described in the
following.
1 Fuse (25 A x 2)
NOTE
If you can’t find the specified capacity
fuse at your store etc., consult your
Kenwood dealer.
2 Battery terminal (POWER IN
BATT.)
3 Ground terminal (GND)
4 Power control terminal (P.CON)
Controls the unit ON/OFF.
NOTE
Controls the unit power. Be sure to
connect it with all the systems.
5 Speaker output terminals (A.ch/
B.ch)
Stereo Connections:
When you wish to use the unit as a
stereo amplifier, stereo connections are
used. The speakers to be connected
should have an impedance of 2Ω or
greater. When multiple speakers are to
be connected, ensure that the combined
impedance is 2Ω or greater for each
channel.
Bridged Connections:
When you wish to use the unit as a high-
output amplifier, bridged connections
are used. (Make connections to the LEFT
channel ª and the RIGHT channel ·
SPEAKER OUTPUT terminals.)
The speakers to be connected should
have an impedance of 4Ω or greater.
When multiple speakers are to be
connected, ensure that the combined
impedance is 4Ω or greater.
6 FILTER switch (B.ch)
This switch allow filtering of the speaker
output signals.
LPF (Low-Pass Filter) position:
The filter outputs the band of lower
frequencies than the frequency set with
the "LPF FREQUENCY" control.
OFF position:
The entire bandwidth is output without
filtering.
7 FILTER switch (A.ch)
This switch allow filtering of the speaker
output signals.
HPF (High-Pass Filter) position:
Only frequencies of 80 Hz or higher are
output.
(Frequencies below 80 Hz are cut.)
OFF position:
The entire bandwidth is output without
filtering.
8 LPF FREQUENCY control (B.ch)
This control adjusts the frequency band
output from this unit.
9 INPUT SENSITIVITY control (A.ch/
B.ch)
Set this control according to the
pre-output level of the center unit
connected with this unit.
NOTE
For the pre-output level, refer to the
<Specifications> in the instruction
manual of the center unit.
0 LINE IN terminal (A.ch/B.ch)
- SP LEVEL INPUT terminal
The genuine-accessory car stereo shall
have a maximum power output of no
more than 40 W.
= Power indicator
When the power is turned on, the
Power indicator lights.
本机为机体内装载了2台立体声的4 声
道放大器。 其2台放大器之中一台称为
A,另一台则称为B。 如下所记,可
以对应开关切换操作及各种功能组合
系统。
1 保险丝 (25 A x 2)
万一在销售店等找不到指定容量的保险
丝的话,请与建伍专销公司联系。
2 POWER IN BATT. (蓄电池) 端子
3 GND (接地) 端子
4 P.CON(电源控制)端子
控制本机的接通/关闭。
控制本机电源。 应务必与全部系统连
接。
5 SPEAKER OUTPUT (扬声器输出) 端子
(A.ch/B.ch)
立体声连接端子:
当您希望本机作为立体声放大器时,必
须使用立体声连接端子。
所连接的扬声器的阻抗必须为 2 欧姆
或更高。 当多个扬声器被连接时,必
须保证每声道的综合阻抗大于或等于 2
欧姆。
桥接连接端子:
当您希望本机作为大功率放大器使用
时,可以进行桥接连接。 (连接LEFT声
ª 、RIGHT声道 · 及SPEAKER
OUTPUT 端子)
所连接的扬声器的阻抗必须为 4 欧姆或
更高。 当多个扬声器被连接时,必须
保证每声道的综合阻抗大于或等于 4 欧
姆。
6 FILTER(滤波器)开关 (B.ch)
些开关可以过滤扬声器的输出信号。
LPF(低通滤波器)位置:
滤波器将输出低于 LPF FREQUENCY控制
设定值的波段。
OFF(关闭)位置:
滤波器将不进行任何滤波处理,输出整
个波段。
7 FILTER(滤波器)开关 (A.ch)
些开关可以过滤扬声器的输出信号。
HPF(高通滤波器)位置:
只让那些等于或高于 80 Hz 的信号通
过。 (低于 80 Hz 的信号被过滤掉。)
OFF(关闭)位置:
滤波器将不进行任何滤波处理,输出整
个波段。
8 LPF FREQUENCY(低通滤波频率)控
制(B.ch)
可以调节本机的输出频带。
9 INPUT SENSITIVITY(输入灵敏度)
控制 (A.ch/B.ch)
根据与本放大器连接的中心装置的前置
输出电平调节本控制钮。
关于中心装置的前置输出电平,请参考
其使用说明书。
0 LINE IN(线输入)端子 (A.ch/B.ch)
- 扬声器电平输入端子
车内原装立体声的最大输出功率不得大
于 40 瓦。
= 电源指示灯
当电源打开时,电源指示灯点亮。
SPEAKER OUTPUT
A
B
BRIDGED
LEFT
P.CONBATT.
POWER IN
FUSE [25A] FUSE [25A]
RIGHT
ss
SPEAKER
LEVEL INPUT
INPUT
SENSITIVITY
[
V
]
0.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
50.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
5
LINE IN
BA
L
R
A chB ch B ch
150
100
80
50
FILTER
HPFOFF
LPF
FREQUENCY
[
Hz
]
A ch
FILTER
LPFOFF
B ch
Speaker level input connections / 连接扬声器电平输入
A.ch B.ch
L
R
L
R
L
R
L
R
A
B
INPUT
SENSITIVITY
[
V
]
0.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
50.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
5
A chB ch B ch
150
100
80
50
FILTER
HPFOFF
LPF
FREQUENCY
[
Hz
]
A ch
FILTER
LPFOFF
B ch
L
R
INPUT
SENSITIVITY
[
V
]
0.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
50.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
5
A chB ch B ch
150
100
80
50
FILTER
HPFOFF
LPF
FREQUENCY
[
Hz
]
A ch
FILTER
LPFOFF
B ch
L
R
L
R
L
R
L
R
A
B
L
R
L
R
L
R
L
R
A
B
INPUT
SENSITIVITY
[
V
]
0.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
50.2
[
MAX
]
0.33
0.5
1
2
4
[
MIN
]
5
A chB ch B ch
150
100
80
50
FILTER
HPFOFF
LPF
FREQUENCY
[
Hz
]
A ch
FILTER
LPFOFF
B ch
Right speaker
(Bridged)
右扬声器(桥接)
Left speaker
(Bridged)
左扬声器(桥接)
4-channel system
4 声道系统
Front left speaker
前置左扬声器
Front right speaker
前置右扬声器
Rear left speaker
后置左扬声器
Rear right speaker
后置右扬声器
Center unit
中心装置
2-channel + Subwoofer system
2 声道 + 副低音扬声器系统
Left speaker (high pass)
左扬声器(高通滤波器)
High-power 2-channel system
大功率 2 声道系统
Center unit
中心装置
Center unit
中心装置
Right speaker (high pass)
右扬声器(高通滤波器)
Subwoofer (Bridged)
副低音扬声器(桥接)
Black
黑色
To chassis (GND)
连接底盘(接地)
* 1
* 2
Cable color of the connector / 接头连接线颜色
* 2 * 1
ª
White / 白色
\
Å Ò ª
A channel Left / A声道左输入
ª
Gray / 灰色
\
Å Â ª
A channel Right / A声道右输入
ª
Green / 绿色
\
ı Ò ª
B channel Left / B声道左输入
ª
Purple / 紫色
\
ı Â ª
B channel Right / B声道右输入
Black / 黑色
\
GND / 接地
KAC-M846_MV_EnCh.indd 2 10.10.8 5:16:21 PM