Kenwood KAC-M1824BT Instruction Manual

KAC-M1824BT
COMPACT BLUETOOTH® 4 CHANNEL DIGITAL AMPLIFIER
INSTRUCTION MANUAL
Take the time to read through this instruction manual.
Familiarity with installation and operation procedures will help you obtain the best performance from your new power
amplifier.
For your records
Record the serial number, found on the back of the unit, in the spaces designated on the warranty card, and in the space provided
below. Refer to the model and serial numbers whenever you call upon your Kenwood dealer for information or service on the product.
Model KAC-M1824BT Serial number
Contains Bluetooth Module FCC ID: YZP-RBFAC21SA
Contains Bluetooth Module IC: 7414A-RBFAC21SA
CAUTION
This equipment complies with FCC/IC radiation exposure limits set forth for an uncontrolled environment and
meets the FCC radio frequency (RF) Exposure Guidelines in Supplement C to OET65 and RSS-102 of the IC radio
frequency (RF) Exposure rules. This equipment has very low levels of RF energy that it deemed to comply with-
out maximum permissive exposure evaluation (MPE). But it is desirable that it should be installed and operated
keeping the radiator at least 20cm or more away from person's body (excluding extremities: hands, wrists, feet
and ankles).
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interfer-
ence to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radi-
ated power (e.i.r.p.) is not more than that necessary for successful communication.
Safety precautions
Protection function
WARNING
The protection function is activated in the following
To prevent injury or fire, take the following
situations:
precautions:
This unit is equipped with a protection function for
• Mounting and wiring this product requires skills and
protecting this unit and your speakers from various
experience. For safety's sake, leave the mounting and
accidents or problems that can occur.
wiring work to professionals.
When the protection function is triggered, the
• To prevent a short circuit, never put or leave any metallic
stops operating.
objects (such as coins or metal tools) inside the unit.
• When a speaker wire may be short-circuited.
• If the unit starts to emit smoke or strange smells, turn
• When a speaker output contacts ground.
off the power immediately and consult your Kenwood
• When the unit malfunctions and a DC signal is sent to
dealer.
the speaker output.
• Do not touch the unit during use because the surface of • When the internal temperature is high and unit won't
the unit becomes hot and may cause burns if touched. operate.
• When detects a low impedance at the speaker
connections.
CAUTION
7 Wiring
To prevent damage to the machine, take the following
precautions: • If a buzzing noise is heard from the speakers when the
• Be sure the unit is connected to a 12V DC power supply engine is running, connect a line noise filter (optional) to
with a negative ground connection. each of the battery wire.
• Do not allow the wire to directly contact the edge of the
• Do not open the top or bottom covers of the unit.
iron plate by using Grommets.
• Do not install the unit in a spot exposed to direct
• Connect the ground wire to a metal part of the car
sunlight or excessive heat or humidity. Also avoid places
chassis that acts as an electrical ground passing
with too much dust or the possibility of water splashing.
electricity to the battery's negative · terminal. Do not
• When replacing a fuse, only use a new one with the
turn the power on if the ground wire is not connected.
prescribed rating. Using a fuse with the wrong rating
• Be sure to install a protective fuse in the power cord
may cause your unit to malfunction.
near the battery. The protective fuse should be the same
• To prevent a short circuit when replacing a fuse, first
capacity as the unit's fuse capacity or somewhat larger.
disconnect the wiring harness.
• When more than one power amplifier are going to be
used, use a power supply wiring wire and protective
NOTE
fuse of greater current-handling capacity than the total
• If you experience problems during installation, consult maximum current drawn by each amplifier.
your Kenwood dealer.
• If the unit does not seem to be working right, consult 7 Speaker selection
your Kenwood dealer.
• Using speakers with smaller input ratings than the
amplifier's output power would result in smoke
Cleaning the unit
generation or equipment failure.
If the front panel gets dirty, turn off the power and wipe • The impedance of the speakers that are going to
be connected should be 2Ω or greater (for stereo
the panel with a dry silicon cloth or soft cloth.
connections), or 4Ω or greater (for bridged connections).
CAUTION
When more than one set of speakers are going to
be used, calculate the combined impedance of the
Do not wipe the panel with a hard cloth or a cloth
speakers and then connect suitable speakers to the
dampened by volatile solvents such as paint thinner and
amplifier.
alcohol. They can scratch the surface of the panel and/or
<Example>
cause the indicator letters to peel off.
4Ω
To prevent battery rise
When the unit is used in the ACC ON position without
4Ω
turning the engine ON, it depletes the battery. Use it after
8Ω
starting the engine.
Combined impedance
Troubleshooting Guide
Symptom Remedy
Sound cannot be heard.
• Check the cords and connections.
• Protection circuit may be activated. Check connections. (\<Protection function>)
• Blown fuse. Replace the fuse.
• The speaker cord is shorted. After check the speaker cord and fixing the cause of the short, replace the fuse.
The sound quality is bad.
• Connect the speaker cord properly checking the ª/· of the terminals and wires well.
(The sound is distorted.)
• Connect the speaker cord again so that it is not pinched by anything.
No bluetooth device is detected.
• Reset the unit. (\<How to reset>)
Bluetooth pairing cannot be made.
• Delete pairing information from both the unit (\<How to reset>) and the Bluetooth device, then perform
pairing again.
Sound is being interrupted or skipped
• Reduce the distance between the remote control unit and the Bluetooth audio player.
during playback of a bluetooth audio
• Other Bluetooth devices might be trying to connect to the unit.
player.
The connected Bluetooth audio player
• Check whether the connected Bluetooth audio player supports Audio/Video Remote Control Profile (AVRCP).
cannot be controlled.
(Refer to the instructions of your audio player.)
• Disconnect and connect the Bluetooth player again.
7 Accessories
DC cable
1 1
4
amplifier
Wire band
Remote control unit
2 2
Self-tapping Self-tapping
4 5
3
ø 4 x 16 mm ø 3 x 8 mm
7 Dimensions
169 mm (5-5/8")
157 mm (6-3/16")
145 mm (5-11/16")
29.3 mm (1-3/16")
84.0 mm (3-5/16")
16.8 mm (5/8")
4Ω 4Ω
2Ω
Specifications
Specifications subject to change without notice.
Mounting
bracket Audio
Max power output ...............................................................................400 W
6 1
Rated power output (+B = 14.4V)
Stereo (4 Ω)....................................45 W × 4 (1 kHz, ≤ 1.0 % THD)
Bridged (4 Ω) ................................90 W × 2 (1 kHz, ≤ 1.0 % THD)
1
Speaker impedance ............................... 4 Ω (2 Ω to 8 Ω allowable)
(Bridged connection: 4 Ω to 8 Ω allowable)
Frequency response (+0, –1 dB)............................ 20 Hz – 20 kHz
7 Double-side adhesive tape 1
Signal to noise ratio..............................................................................90 dB
Input impedance ...................................................................................10 kΩ
USB Charge
Maximum supply current ...............................................DC 5 V
Protective
cover Bluetooth
1 8 1 Version ................................................................. Bluetooth Ver.3.0 + EDR
Supported codecs ........................................................... SBC/AAC/aptX
FCC WARNING
This equipment may generate or use radio frequency energy. Changes or modifications to this
equipment may cause harmful interference unless the modifications are expressly approved in the
instruction manual. The user could lose the authority to operate this equipment if an unauthorized
change or modification is made.
FCC NOTE
This equipment has been tested and found to comply with the limits for a Class B digital device, pur-
45 mm (1-3/4")
suant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment may cause harmful interference to
radio communications, if it is not installed and used in accordance with the instructions. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be determined by turn-
ing the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is con-
nected.
• Consult the dealer or an experienced radio/TV technician for help.
IC (Industry Canada) Notice
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the
device.
31.3 mm (1-1/4")
The term "IC: " before the certification/ registration number only signifies that the Industry
99.0 mm (3-7/8") 27.8 mm
Canada technical specification were met.
(1-1/16")
Profile ................... A2DP (Advanced Audio Distribution Profile)
AVRCP (Audio/Video Remote Control Profile)
General
Operating voltage ................................ 14.4 V (11 – 16 V allowable)
Current consumption ............................................................................15 A
Dimensions (W × H × D) ......................................145 × 45 × 99 mm
5-11/16 × 1-3/4 × 3-7/8 inch
Weight .......................................................................................1.4 kg (3.1 lbs)
CEA-2006
RMS Watts per channel @ 4 ohms, ≤ 1% THD+N
1 A
.....................................................................................45 W × 4
Signal to noise ratio
(Reference: 1Watt into 4 ohms) ......................74 dBA