Kenwood KAC-6401 User manual

25
432
L
A
A
R
L
R
B
A
B
B
GND
L
C
C
L
C
C
!@#
L
R
L
R
L
R
L
R
A
B
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
B.CH OPERATION
INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
LPF
HPF
OFF
A AB
25 25
4
4
LL
A
A
L
A
A
B
R
B
R
LR
RL
R
AR
B
B
L
A
R
L
R
B
L
B
LEFT
BRIDGED
RIGHT
A
B
BRIDGED
RL
LEFT
BRIDGED
RIGHT
A
B
BRIDGED
RL
7
55
GND
L
R
L
R
A
B
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
!
@
#
F
R
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
LPF
HPF
OFF
@
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
LPF
HPF
OFF
@
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
LPF
HPF
OFF
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
!#
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
!#
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
!#
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
System examples
Installation procedure
1. Remove the ignition key and disconnect the
negative -terminal of the battery to prevent
short circuits.
2. Set the unit according to the intended usage.
3. Connect the input and output cables of the
units.
4. Connect the speaker wires.
5. Connect the power wire, power control wire
and grounding wire following this order.
6. Install the unit in the car.
7. Connect the negative -terminal of the battery.
To prevent fire caused by a short in the wiring,
connect a fusible link or breaker nearby the
battery’s positive terminal.
•Be sure to turn the power off before changing the
setting of any switch.
•If the fuse blows, check wires for shorts, then
replace the fuse with one of the same rating.
•Check that no unconnected cables or connectors
are touching the car body. Do not remove caps from
unconnected cables or connectors to prevent short
circuits.
•Connect the speaker wires to appropriate speaker
connectors separately. Sharing the negative wire of
the speaker or grounding speaker wires to the metal
body of the car can cause this unit to fail.
•After installation, check that the brake lamps,
winkers, and wipers work properly.
■Speaker level input terminals (0)
•The genuine-accessory car stereo shall have a
maximum power output of no more than 40 W.
•Do not connect the speaker output leads from
a power amplifier (Optional) to the speaker
level input terminals of this unit, for this may
cause malfunction or damage.
•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.
•Connect the power control lead to a power
supply which can be turned ON/OFF by the
ignition key switch (ACC line). With this
connection, shock noise may be generated
when the power of the genuine-accessory car
stereo is switched ON/OFF.
■Power terminal (234)
Connect to their respective terminals the power
supply wire, and ground wire, all of which pass
through the associated terminal cover. Once the
connections are complete, place the cover on
the terminal section.
■Accessories
Installation
Since the power amplifier has no parts which require
operation, it can be installed at a position away from
the driver’s seat without any hindrances.
As generally accepted positions for its installation,
places such as inside the trunk, etc. can be
considered.
•Do not install the unit under the carpet. Otherwise
heat build-up occurs and the unit may be damaged.
•Install this unit in a location which allows heat to
easily dissipate. Once installed, do not place any
object on top of the unit.
•The surface temperature of the amplifier will
become hot during use. Install the amplifier in a
place where people, resins, and other substances
that are sensitive to heat will not come into contact
with it.
•When making a hole under a seat, inside the trunk,
or somewhere else in the vehicle, check that there
is nothing hazardous on the opposite side such as a
gasoline tank, brake pipe, or wiring harness, and be
careful not to cause scratches or other damage.
•Do not install near the dashboard, rear tray, or air
bag safety parts.
•The installation to the vehicle should securely fasten
the unit to a place in which it will not obstruct
driving. If the unit comes off due to a shock and hits
a person or safety part, it may cause injury or an
accident.
•After installing the unit, check to make sure that
electrical equipment such as the brake lamps, turn
signal lamps and windshield wipers operate
normally.
2CAUTION
2CAUTION
2WARNING
KAC-6401
4-CHANNEL POWER AMPLIFIER
INSTRUCTION MANUAL
© B64-2568-00/00 (MV)
Specifications
Specifications subject to change without notice.
Audio Section
Max Power Output....................................................................................................................160 W ×2
Rated Power Output (4 Ω)
4 Channel Mode (20 Hz – 20 kHz, less than 0.08 % THD) .......................................................30 W ×4
3 Channel Mode (20 Hz – 20 kHz, 0.08 % THD) + (1 kHz, 0.8 % THD) ................30 W ×2 + 80 W ×1
2 Channel Mode (1 kHz, 0.8 % THD) .......................................................................................80 W ×2
Rated Power Output (2 Ω)
4 Channel Mode (1 kHz, 0.8 % THD) .......................................................................................40 W ×4
Frequency Response (+0, –3 dB) ........................................................................................5 Hz – 50 kHz
Signal to Noise Ratio ......................................................................................................................100 dB
Sensitivity (MAX) (rated output).........................................................................................................0.2 V
Sensitivity (MIN) (rated output)..........................................................................................................5.0 V
Input Impedance ..............................................................................................................................10 kΩ
Low Pass Filter Frequency (12 dB/oct.)............................................................................................80 Hz
High Pass Filter Frequency (12 dB/oct.) .........................................................................................150 Hz
General
Operating Voltage (11 – 16 V allowable)..........................................................................................14.4 V
Current Consumption (1 kHz, 10 % THD) ..........................................................................................18 A
Dimensions (W ×H ×D).............................................................................................268 ×59 ×220 mm
Weight................................................................................................................................2.9 kg (6.4 lbs)
Safety precautions
To prevent injury or fire, take the following
precautions:
•When extending the ignition, battery, or ground
wires, make sure to use automotive-grade wires or
other wires with a 3mm2(AWG12) or more to
prevent wire deterioration and damage to the wire
coating.
•To prevent a short circuit, never put or leave any
metallic objects (such as coins or metal tools) inside
the unit.
•If the unit starts to emit smoke or strange smells,
turn off the power immediately and consult your
Kenwood dealer.
•Do not touch the unit during use because the surface
of the unit becomes hot and may cause burns if
touched.
To prevent damage to the machine, take the
following precautions:
•Be sure the unit is connected to a 12V DC power
supply with a negative ground connection.
•Do not open the top or bottom covers of the unit.
•Do not install the unit in a spot exposed to direct
sunlight or excessive heat or humidity. Also avoid
places with too much dust or the possibility of water
splashing.
•When replacing a fuse, only use a new one with the
prescribed rating. Using a fuse with the wrong rating
may cause your unit to malfunction.
•To prevent a short circuit when replacing a fuse, first
disconnect the wiring harness.
•If you experience problems during installation,
consult your Kenwood dealer.
•If the unit does not seem to be working right, consult
your Kenwood dealer.
■Cleaning the unit
If the front panel gets dirty, turn off the power and
wipe the panel with a dry silicon cloth or soft cloth.
Do not wipe the panel with a hard cloth or a cloth
dampened by volatile solvents such as paint thinner
and alcohol. They can scratch the surface of the panel
and/or cause the indicator letters to peel off.
■Wiring
•If a buzzing noise is heard from the speakers
when the engine is running, connect a line noise
filter (optional) to each of the battery wire.
•Do not allow the wire to directly contact the edge
of the iron plate by using Grommets.
•Connect the ground wire to a metal part of the
car chassis that acts as an electrical ground
passing electricity to the battery‘s negative -
terminal. Do not turn the power on if the ground
wire is not connected.
•Connect the power cable directly to the battery.
It can cause blown fuses if you connect to the
vehicle wring harness.
•Be sure to install a protective fuse in the power
cord near the battery. The protective fuse should
be the same capacity as the unit’s fuse capacity
or somewhat larger.
•For the power cord and ground, use a vehicle
type (fireproof) power wring cord with a current
capacity greater than the unit’s fuse capacity.
(Use a power wiring cord with a diameter of 3
mm2(AWG 12) or greater.)
•When more than one power amplifier are going
to be used, use a power supply wiring wire and
protective fuse of greater current-handling
capacity than the total maximum current drawn
by each amplifier.
■Speaker Selection
•The rated input power of the speakers that are
going to be connected should be greater than
the maximum output power (in Watts) of the
amplifier. Use of speakers having input power
ratings that are less than the output power of
the amplifier will cause smoke to be emitted as
well as damage.
•The impedance of the speakers that are going to
be connected should be 2Ωor greater (for
stereo connections), or 4Ωor greater (for
bridged connections). When more than one set
of speakers are going to be used, calculate the
combined impedance of the speakers and then
connect suitable speakers to the amplifier.
2CAUTION
NOTE
2CAUTION
2WARNING
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.
1Fuse (25 A)
2Battery terminal
3Ground terminal
4Power control terminal
5Amplifier A/B SPEAKER OUTPUT
terminals
•Stereo Connections:
When you wish to use the unit as a stereo
amplifier, stereo connections are used.
•Bridged Connections:
When you wish to use the unit as a high-output
monaural amplifier, bridged connections are
used. (Make connections to the LEFT channel (+)
and the RIGHT channel (–) SPEAKER OUTPUT
terminals.)
6INPUT SENSITIVITY control
Set this control according to the pre-output level of
the center unit connected with this unit, or to the
maximum power output of the genuine-accessory
car stereo.
The sensitivities of amplifiers A and B can be
adjusted independently regardless of the position
of the input selector switch.
Use the diagram on the right as a guide.
For the pre-output level or the maximum power
output, refer to the “Specifications” in the
instruction manual of the center unit.
7RCA cable ground lead terminal
When using an RCA cable with a ground lead
attached, connect the ground lead to this terminal.
Do not use this terminal for power source
grounding. This unit will be damaged if the power
source grounding wire is connected to this
terminal.
8Amplifier A/B LINE IN terminals
9LINE OUT terminal
These jacks output respectively the signals input to
amplifiers A and B. They always output the stereo
signals regardless of the position of the
OPERATION switch.
0Speaker level input terminals
!OPERATION switch
The amplification methods of the signals input to
amplifiers A and B can be selected independently
according to the setting of this switch.
•STEREO position:
The amplifier can be used as a stereo amplifier.
•MONO (Lch) position:
Amplifies the signal input from the left side only.
Set to this position and make bridged
connections to use as a high-power monaural
amplifier. (The input right signal is not output.)
@FILTER switch
These switches allow filtering of the speaker
output signals.
•HPF (High Pass Filter) position
Only frequencies of 150 Hz or higher are output.
(Frequencies below 150 Hz are cut.)
•LPF (Low Pass Filter) position
Only frequencies of 80 Hz or lower are output.
(Frequencies above 80 Hz are cut.)
The Lch and Rch will be mixed before output
even if the operation switch is set to STEREO.
•OFF position
The original sound without filtering is output.
#INPUT SELECTOR switch
This switch selects the input method of the signals
to be amplified by amplifiers A and B.
•AB position:
Amplifies both of the signals input to amplifiers A
and B.
•Aposition:
Amplifies only signal input amplifier A with both
amplifiers A and B.
Power indicator
When the power is turned on, the Power indicator
lights.
If the Power indicator does not light when the power
is turned on, the protection function may be
activated. Check whether there is any indication of
trouble.
■The protection function is activated
in the following situations:
This unit is equipped with a protection function for
protecting this unit and your speakers from various
accidents or problems that can occur.
When the protection function is triggered, the
Power indicator goes off and the amplifier stops
operating.
•When a speaker wire may be short-circuited.
•When a speaker output contacts ground.
•When the unit malfunctions and a DC signal is
sent to the speaker output.
•When the internal temperature is high and unit
won’t operate.
•When a ground wire of the center unit (cassette
receiver, CD receiver, etc.) or this unit is not
connected to a metal part serving as an electrical
ground passing electricity to the battery's
negative -terminal.
2CAUTION
NOTE
Controls
Terminal cover
Battery
Ground wire*
Battery wire*
Protective Fuse*
Power control wire*
■Power wire connection
Connection
For safe installation, read "Installation procedure" before starting work.
NOTE
CENTER UNIT (Cassette receiver,
CD receiver, etc.)
Power control wire*
RCA cable*
Genuine-accessory
car stereo (No line
output center unit
etc.)
ACC
Battery
Car fuse box
Lead terminal* Lead terminal*
■4-channel ■4-channel
■3-channel
■2-channel
■2ch + woofer
■2-channel
■RCA cable connection ■Speaker level input connection
■Speaker stereo connection ■Speaker bridge connection
CENTER
UNIT
CENTER
UNIT
CENTER
UNIT
■2-channel
CENTER
UNIT
■Tri-mode
Principle of Tri-mode
Method of frequency band division using a coil
and capacitor ... in case of 6dB/oct. slope
Coil (L): Passes low frequencies and blocks
high frequencies. (Low pass)
Capacitor (C): Passes high frequencies and
blocks low frequencies. (High pass)
Example:
When it is required to set a crossover
frequency of 120 Hz using speakers with an
impedance of 4 ohms.
fc=Cut of Frequency (Hz)
R=Speaker Impedance (Ω)
•If you wish to bridge-connect a speaker, the
speaker impedance must be no less than 4
ohms. Connecting a speaker with an
impedance lower than 4 ohms may damage
the unit.
•Be sure to connect capacitors to speakers to
which high frequencies will be passed.
Failure to do so will result in a drop of the
combined impedance with the subwoofer.
•Ensure that the withstand voltage and
current ratings of the capacitors (C) and coils
(L) are sufficient.
2CAUTION
LC
0 dB
-3 dB
Crossover Frequency
Frequency
CENTER
UNIT
High pass
Subwoofer
(L + R)
159000
C= (µF)
fc x R
159 x R
L= (mH)
fc
159000
= = 331.25 µF
120Hz x 4Ω
159 x 4Ω
= = 5.3 mH
120Hz
Front left speaker
Front right speaker
Rear left speaker
Rear right speaker
Left speaker
Right speaker
Left speaker
Right speaker
Subwoofer
PROBLEM POSSIBLE CAUSE SOLUTION
No sound.
(No sound from one side.)
(Blown fuse.)
The output level is too
small (or too large).
The sound quality is bad.
(The sound is distorted.)
•Input (or output) cables are
disconnected.
•Protection circuit may be
activated.
•Volume is too high.
•The speaker cord is shorted.
The input sensitivity adjusting
control is not set to the correct
position.
•The speakers wire are
connected with wrong +/ -
polarity.
•Aspeaker wire is pinched by a
screw in the car body.
•The switches may be set
improperly.
•Connect the input (or output)
cables.
•Check connections by referring
to "Power indicator".
•Replace the fuse and use lower
volume.
•After check the speaker cord and
fixing the cause of the short,
replace the fuse.
Adjust the control correctly
referring to "Controls".
•Connect them properly checking
the +/ -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".
Lead terminal*
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.
Bridge
Bridge
White
White/Black
Gray
Gray/Black
Green
Green/Black
Purple
Purple/Black
A-channel
A.ch Left
A.ch Right
B-channel
B.ch Left
B.ch Right
Front
Rear
Cable Color of the
connector
F
R
*Commercially available
parts
Part name Number of
Items
External
View
Terminal cover
(Power terminal) 1
Self-tapping screws
(ø4 ×16 mm) 4
Speaker level input
cable 1
4 通道放大器
使用說明書
Description of markings in the figure.
8 Ω2 Ω
4Ω
4Ω4Ω
4Ω
6
0.2(MAX)
(MIN)5
0.3
0.5
1
2
3
4
INPUT SENSITIVITY(V)
25
1 92 3 4 75 0
! #
8
@
6
(W)
30
40
20
10
Power indicator
Installation board, etc.
(thickness : 15 mm or more)
Self-tapping screw
(ø4 ×16 mm)
KAC-6401(M)1En 02.10.7 4:47 PM Page 1

L
R
L
R
A
B
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
A
B
L
R
L
R
!
@
#
F
R
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
LPF
HPF
OFF
@
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
LPF
HPF
OFF
@
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
LPF
HPF
OFF
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
!#
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
!#
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
!#
B.CH OPERATION INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
A AB
L
C
C
L
C
C
!@#
L
R
L
R
L
R
L
R
A
B
LPF
HPF
OFF
B.CH FILTERA.CH FILTER
B.CH OPERATION
INPUT SELECTOR
MONO (Lch)
STEREO
A.CH OPERATION
MONO (Lch)
STEREO
LPF
HPF
OFF
A AB
6
0.2(MAX)
(MIN)5
0.3
0.5
1
2
3
4
INPUT SENSITIVITY(V)
25
1 92 3 4 75 0
! #
8
@
6
(W)
30
40
20
10
■接線
●如果發動機運轉時從揚聲器中發出噪音，可以
在電池的每根連線上加一個線路噪音過濾器
（選購件）。
●使用絕緣圈，以防纜線直接接觸貼片的邊緣。
●將接地線連接到車架的金屬部位，車架起到車
輛電氣接地的作用，將電流傳遞到電池的負極
（-）。如果接地線沒有連接就不要打開電源開
關。
●請將電源電纜直接接續在電池上。如果接續在
車輛電氣配線上 ,會造成車輛的保險絲切斷故
障。
●應務必在蓄電池附近的電源連接線上設置保險
絲。保險絲的規格應該與本機的保險絲容量相
同或者略大。
●對於電源連接線和接地線﹐請使用電流容量大
於本機保險絲容量的汽車用（防火）電源連接
線。（請使用截面積為 3mm2（AWG12）或
者以上的電源連接線。）
●當使用多個功率放大器時，電源導線的電流容
量及保險絲的容量要大於各個放大器的最大使
用電流之和。
■ 揚聲器選擇
●準備連接的揚聲器的額定功率要大於放大器的
最大輸出功率。如果揚聲器的額定功率小於放
大器的最大輸出功率則會導致揚聲器冒煙以至
損壞。
●所連接的揚聲器的阻抗必須為 2 歐姆或更高
（立體聲連接時）；或者 4 歐姆或更高（橋路
連接）。當多個揚聲器被連接時，則必須計算
揚聲器的綜合阻抗，再將妥當的揚聲器與放大
器相連接。
為了防止受傷和火災﹐請遵守下列注意事項。
●當延長蓄電池導線和接地導線時﹐請使用車輛
用導線或 3mm2（AWG12）以上的導線﹐以
防止導線劣化和被覆面的損傷。
●為了防止短路等事故﹐請勿將金屬物品（硬
幣､工具等）掉落在裝置中。
●萬一裝置冒煙或有異味時﹐請立即關閉電源﹐
並與 KENWOOD 經銷商洽談。
●在使用中請盡量不要接觸機器表面。因為機器
在使用中表面發熱會燙傷人體。
為了防止裝置發生故障﹐請遵守下列注意事項﹐
正確操作和使用。
●請以負接地線的 12V 直流電源向本裝置供
電。
●請勿打開頂部和底部的蓋子。
●請勿將本裝置安裝在曝露於直射陽光､高溫或
高濕､水可能飛濺的或有灰塵的地方。
●更換保險絲時﹐請更換規定容量相同的保險
絲﹐如使用不同容量的保險絲﹐可能會造成裝
置的故障。
●更換保險絲時﹐為了防止短路事故﹐請先拔下
電源線束再進行更換。
●安裝有困難時﹐請與 KENWOOD 經銷商洽
談。
●如果仍不能恢復正常時﹐請與 KENWOOD 經
銷商洽談。
■ 裝置的保養
如果外表髒污時﹐請關閉電源﹐使用干燥的硅布
或柔軟的布匹擦拭。
請勿使用硬布或塗料稀釋劑､酒精等揮發性溶
劑﹐以免損壞外表面或將所附指示字符擦掉。
KAC-6401
4 通道放大器
使用說明書
© B64-2568-00/00 (MV)
規格
規格可能會變更﹐恕不另行通知。
音頻部
最大功率輸出 ......................................................................................................................... 160 W ×2
額定輸出功率（4 歐姆）
4 通道模式（20 Hz - 20 kHz ，0.08% THD ）...................................................................... 30 W ×4
3 通道模式（20 Hz - 20 kHz ，0.08% THD）+（1 kHz ，0.8% THD）........... 30 W ×2 + 80 W ×1
2 通道模式（1 kHz ，0.8% THD）....................................................................................... 80 W ×2
額定輸出功率（2 歐姆）
4 通道模式（1 kHz ，0.8% THD）....................................................................................... 40 W ×4
頻率響應 （+0 ，-3 dB）.................................................................................................. 5 Hz ~ 50 kHz
信噪比 ......................................................................................................................................... 100 dB
敏感度（最大）（額定輸出）.......................................................................................................... 0.2 V
（最小）（額定輸出）......................................................................................................... 5.0 V
輸入阻抗 ....................................................................................................................................... 10 kΩ
低頻通過過濾（12 dB/oct）........................................................................................................... 80 Hz
高頻通過過濾（12 dB/oct）......................................................................................................... 150 Hz
共同
使用電壓（允許 11-16 伏）........................................................................................................... 14.4 V
電流消耗（1 kHz ，10% THD）...................................................................................................... 18 A
尺寸（W ×H ×D）.................................................................................................. 268 ×59 ×220 mm
重量 ................................................................................................................................2.9kg (6.4 lbs)
故障檢修
有時被認為是故障的現象﹐其實是因微小的操作或配線失誤而造成。在要求維修之前﹐請參照下表稍
事檢查為盼。
現象 原因 排除方法
沒有聲音（一側無聲音）
（保險絲跳斷）
輸出水平過低（或過高）
聲音質量很差（聲音失真）
●輸入（或輸出）纜線未連接。
●保護線路可能被觸發。
●音量過大。
●揚聲器電線短路。
輸入敏感度調節不當，沒有位于妥
當位置。
●揚聲器纜線的極性 +/-連接錯
誤。
●揚聲器纜線的一根被車體螺釘壓
迫。
●開關的設定可能不妥。
●連接輸入（或輸出）纜線。
●參考“電源指示燈”一節，檢查
連接狀況。
●請更換保險絲 ,減小音量。
●確認揚聲器線 ,解除短路原因後 ,
更換保險絲。
調節該控制器。請參考“控制”。
●請將纜線的極性 +/-連接正
確。
●重新連接纜線，使之不再受螺釘
壓迫。
●請參考“系統配置實例”，將開
關正確設置。
安全注意事項
註
2注意
2警告
2注意
安裝步驟
1. 拔取點火鑰匙，拆掉電池負極（-）端子，以
防短路。
2. 根據使用目的，設置本機到妥當位置。
3. 連接本機的輸入和輸出纜線。
4. 連接揚聲器纜線。
5. 按順序連接電源線，電源控制纜線及地線。
6. 將本機安裝到車中。
7. 連接電池的負極（-）。
為了防止短路所引起的火災，在電池的正極附
近連接保險絲或斷電器。
●在變更開關的設定時，必須首先切斷電源。
●當保險絲熔斷後，要檢查纜線是否有短路，
並更換上相同規格的保險絲。
●檢查是否有尚未連接的纜線或與車體相接觸
的端頭。未連接纜線及其端部的保護帽不可
拆掉，以防短路。
●揚聲器的纜線要分別連接到各自的端子。共
用揚聲器的負極纜線或將揚聲器端子接地到
汽車的金屬部分，都會導致本機停止工作。
●安裝之後，請檢查汽車的剎車燈、方向指示
燈、雨刷等是否正常動作。
■ 揚聲器水平輸入端子 ( 0 )
●車內原裝立體聲的最大輸出功率不得大於 40
瓦。
●不要將揚聲器的輸出引線從功率放大器（選
購件）連接到本機的揚聲器的輸入端子。否
則，將造成誤動作或損壞。
●不可同時連接纜線和引線到 RCA 纜線輸入
端子及揚聲器輸入端子。否則，將造成誤動
作或損壞。
●將電源控制導線連接到起動鑰匙可以控制開
關（ACC 線）的電源上。
在這樣連接的場合，當車內原裝立體聲電源
開關時，可能產生沖擊噪音。
■ 電源端子 ( 234 )
將電源控制線、電源線、地線同時穿過端子套
分別連接到各自對應的端子。當連接完畢後，
將端子套套緊於端子上。
■ 附件
2注意
2警告
安裝
因為放大器中不包含需要隨時操作的部件，所以
可以安裝在遠離駕駛位置的不造成障礙的位置。
通常，可供參考的安裝地點大致為行李箱等處。
●不可將本裝置安裝在絨毯底下，否則，蓄熱
會導致本裝置損壞。
●將本裝置安裝在熱量容易發散的地點。
一旦安裝完畢，不可在其上放置其它物品。
●機器使用過程中，機體表面會發熱昇溫。所
以其安裝地點應該是人體，樹脂及其它熱敏
感物質不易觸及的地方。
●在車座、行李箱底部或車子其它部位打洞
時，應確認其背面沒有會受到損壞的物件，
諸如油箱、剎車用配管或線路管套等，千萬
不可擦傷或損壞這些物品。
●不可安裝在駕駛室儀表板、尾部底板或保險
氣囊等部件之上。
●將本機安裝在車內時，應確保固定牢靠，且
不會對駕車造成妨礙。如果因為沖擊造成本
機脫落且撞及人體或保險部件，就會導致傷
害或事故。
●在本裝置安裝之後，應該確認電氣設備，比
如剎車燈、轉向信號燈以及雨刷等操作正
常。
2注意
控制
電源指示燈
○○○○○
本機之機體內撘載了 2 台立體聲 4 通道放大器。
其2台放大器之中一台稱為Ａ，另一台則稱為
Ｂ。如下所記，可以對應開關切換操作及各種功
能組合系統。
1 保險絲 (25 A)
2 電池端子
3 接地端子
4 電源控制端子
5 放大器 A/B 揚聲器輸出端子
•立體聲連接端子:
當您希望本機作為立體聲放大器時，必須
使用立體聲連接端子。
•橋路連接端子:
當您希望本機作為大功率單聲道放大器使
用時，可以進行橋路連接。（連接 LEFT 聲
道（+）、 RIGHT 聲道（-）及 SPEAKER
OUTPUT 端子）
6 INPUT SENSITIVITY（輸入敏感度）控制
根據連接到本機的中心裝置的前置輸出水
平，設定本控制旋鈕的位置；對于原裝的車
用立體聲，可以設置為最大功率輸出。對於
放大器 A 和B 可以分別設定其敏感度而不管
輸入選擇開關的位置如何。對於放大器 A 和
B 可以分別設定其敏感度而不管輸入選擇開
關的位置如何。請參考右圖進行設置。
關於前置輸出水平及最大功率輸出，可以參
考中心裝置的使用說明書的“規格”部分。
7 RCA 纜線接地接頭
當使用具有接地引線的 RCA 纜線時，將接地
引線連接到此端子。
該端子不能作為電源的接地端子。如果將電
源的地線連接到此端子就會損壞本機。
8 放大器 A/B LINE IN 端子
9 LINE OUT 端子
此端子為合成輸出分別從放大器 A 和B 輸入
的信號。它們總是輸出立體聲信號而不管
OPERATION（操作）開關的設定如何。
0 揚聲器水平輸入端子
! OPERATION（操作）開關
根據本開關的設定，可以選擇輸入到放大器
A 和B 中的信號的放大方法。
•STEREO（立體聲）位置
放大器可以作為立體聲放大器使用。
•MONO（Lch）（單聲道 - 左聲道）位置
只放大從左聲道輸入的信號。切換到此位
置可以進行橋路連接，作為大功率單聲道
放大器使用（輸入的右聲道信號不輸
出）。
@ FILTER（過濾器）開關
這些開關可以過濾揚聲器的輸出信號。
•HPF（高頻通過）位置
只讓那些等於或高於 150 Hz 的信號通過
（低於 150 Hz 的信號被過濾掉）。
•LPF （低頻通過）位置
只讓那些等於或低於 80 Hz 的信號通過
（高於 80 Hz 的信號被過濾掉）。
即使當操作開關位於 STEREO（立體聲）
時，左右聲道的信號在輸出前將被混合。
•OFF（關閉）位置
未經過濾的信號原樣輸出。
#INPUT SELECTOR（輸入選擇）開關
本開關可以選擇被放大器 A 和B 處理的信號
的輸入方法。
•A、B 位置﹕
放大輸入到放大器 A 和B 的兩種信號。
•A 位置﹕
使用 A、B放大器處理輸入到放大器 A 的
信號。
註
電源指示燈
當電源打開時，電源指示燈點亮。
如果當電源被打開，但該指示燈卻不點亮時，也
有可能是因為保護功能被激活。請檢查是否有出
現故障的跡象。
■ 在以下場合中保護功能被激活:
本機裝有保護功能，可以保護本機以及揚聲
器不會受到可能發生的各種意外事故的損
害。
當保護功能被觸發時，電源指示燈將熄滅，
放大器也停止工作。
●當揚聲器纜線短路時。
●當揚聲器的輸出接地時。
●當本機出現誤動作，有 DC（直流）信號
傳送到揚聲器輸出端時。
●內部高溫不能動作時
●當中心裝置（錄音卡座、 CD 接收機等）
或本機的地線沒有連接到作為電氣地線的
金屬部件而向電池負極（-）端子輸送電流
時。
系統配置實例
LC
0 dB
-3 dB
交叉頻率
頻率
●當您將本機與揚聲器進行橋路連接時，所連
接的揚聲器的阻抗必須為 4 歐姆或更高。如
果所連接的揚聲器的阻抗小於 4 歐姆，就會
損壞本機。
●對於高頻通過的揚聲器要連接一個電容器。
否則，將造成與副低音揚聲器連接的綜合阻
抗下降。
●確保電容器（C）和線圈（L）的允許電壓和
額定電流符合要求（足夠大）。
中心裝置
中心裝置
中心裝置
中心裝置
高頻通過
副低音揚聲器
■ 4 通道
■ 2通道+低音揚聲器
■ 三模式
■ 2 通道
右揚聲器
左揚聲器
右揚聲器
左揚聲器
副低音揚聲器
(L+R)
2注意
159000
C= (µF)
fc x R
159 x R
L= (mH)
fc
○○○○○○
三模式的原理
使用線圈及電容進行頻率區分的方法 ... 在6dB/
oct. 的條件下
線圈 (L): 讓低頻通過，阻塞高頻（低頻通過）
電容 (C): 讓高頻通過，阻塞低頻（高頻通過）
實例
當使用的揚聲器的阻抗為 4 歐姆，所需要的交叉
頻率為 120 Hz 時。
fc= 阻斷頻率 (Hz)
R= 揚聲器阻抗 (Ω)
159000
= = 331.25 (µF)
120Hz x 4 Ω
159 x 4 Ω
= = 5.3 (mH)
120Hz
25 25
4
4
LL
A
A
L
A
A
B
R
B
R
LR
RL
R
AR
B
B
L
A
R
L
R
B
L
B
LEFT
BRIDGED
RIGHT
A
B
BRIDGED
RL
LEFT
BRIDGED
RIGHT
A
B
BRIDGED
RL
7
55
GND
25
432
L
A
A
R
L
R
B
A
B
B
GND
連接
RCA 纜線
（另售品）
原裝車用立體聲
（沒有輸出的中
心裝置等）
引出端子（市售品）
○○○○○○
蓄電池
■ 連接 RCA 纜線
■ 連接揚聲器水平輸入
引出端子（市售品）
○○○○○
■ 連接立體聲揚聲器
■ 連接立體聲的橋路
■ 連接電源線
端子套
蓄電池導線 （市售品）
○○○○
○○○○
電源控制纜線 （市售品）
引出端子（市售品）
蓄電池
接地導線 （市售品）
保護保險絲
（市售品）
○○○○
ACC
電源控制纜線 （市售品）
汽車保險絲盒
○○○○○
中心裝置
（錄音卡座、
CD 接收機等）
註
為了安全安裝 ,請在開始操作之前 ,務必閱讀「安裝步驟」說明。
4-CHANNEL POWER AMPLIFIER
INSTRUCTION MANUAL
8 Ω2 Ω
4Ω
4Ω4Ω
4Ω
安裝基板，等
（厚度﹕不小於 15 mm）
自攻絲螺絲
(φ4 x 16 mm)
○○○○○
○○○○○○○
揚聲器音量輸入電纜 1
零件名稱 項目數量外觀
端子套（電源端子） 1
自攻絲螺絲
(φ4 x 16 mm) 4
2注意
○○○○○○
中心裝置
■ 2 通道
■ 4 通道
■ 3 通道
■ 2 通道
後置左揚聲器
後置右揚聲器
前置右揚聲器
前置左揚聲器
A 通道
A.ch 左
A.ch 右
B 通道
B.ch 左
B.ch 右
前置
後置
白色
白色 /黑色
灰色
灰色 /黑色
紫色
紫色 /黑色
綠色
綠色 /黑色
（橋路）
（橋路）
L
R
圖中標誌說明
連接器的連接線顏色