Kenwood KAC-M1804 Instruction Manual

KAC-M1804
COMPACT 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-M1804 Serial number
U.S.A. KENWOOD USA CORPORATION
This warranty will be honored only in the U.S.A. WHO IS PROTECTED
This warranty is enforceable only by the original purchaser.
KENWOOD LIMITED WARRANTY
FOR CAR STEREO COMPONENTS WHAT WE WILL PAY FOR
We will pay for all labor and material expenses for covered
items. Payment of shipping charges is discussed in the next
HOW LONG IS THE WARRANTY
section of this warranty.
Kenwood U.S.A. Corporation ("Kenwood") warrants this
product for a period of one (1) year from the date of original
HOW TO OBTAIN WARRANTY
purchase.
SERVICE
WHAT IS COVERED AND WHAT IS If your KENWOOD product ever needs service:
1. Take or ship it to any KENWOOD Authorized Service Center
NOT COVERED
in the U.S.A. along with & complete description of the
Except as specifi ed below, this warranty covers all defects in
problem.
material and workmanship in Kenwood car stereo components.
The following are not covered by the warranty:
1. Any product which is not distributed in the U.S.A. by
2. Although you must pay any shipping charges if it is necessary
Kenwood or which is not purchased in the U.S.A. from an
to ship the product for warranty service, we will pay the return
authorized Kenwood car stereo dealer or an automobile
shipping charges if the repairs are covered by the warranty
dealer, unless the product is purchased through the U.S.A
within the United States.
Military Exchange Service.
3. Whenever your units are taken or sent for warranty service,
2. Any product on which the serial number has been defaced,
you must include a copy of the original dated sales receipt
modifi ed or removed.
as proof of warranty coverage.
3. Damage, deterioration or malfunction resulting from:
a. Any shipment of the product (claims must be presented
LIMITATION OF IMPLIED
to the carrier).
b. Installation or removal of the product.
WARRANTIES
c. Accident, acts of nature, misuse, abuse, neglect,
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES
unauthorized product modifi cation or failure to follow OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
instructions supplied with the product. PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF
d. Repair or attempted repair by anyone not authorized THIS WARRANTY.
by Kenwood.
e. Any other cause which does not relate to a product
defect.
MILITARY
Units purchased through the U.S.A. military exchange service LIMITATION OF IMPLIED
overseas may be serviced under warranty in the continental
WARRANTIES
U.S.A., subject to the following conditions.
Any and all implied warranties, including warranties of
1) The original warranty is in effect.
merchantability and fi tness for a particular purpose, shall be
2) Proof of purchase is provided to the servicer.
limited in duration to the length of this warranty.
WARRANTY FOR MILITARY MARKET
EXCLUSION OF CERTAIN DAMAGES
Kenwood corporation is proud of the quality and workmanship
KENWOOD's liability for any defective product is limited to
of its audio equipment. This unit has been properly designed,
the repair or replacement of said product, at our potion, and
tested and inspected before it was shipped to you. If properly
shall not include damages of any kind, whether incidental,
installed and operated in accordance with instructions furnished,
consequential or otherwise, expect to the extent prohibited
it should give you an optimum reliable performance.
by applicable law.
WARRANTY PERIOD
This product is warranted for a period of (1) year from the date
of the original purchase.
SCOPE OF WARRANTY
Except as specifi ed below, this warranty covers all defects in
materials and workmanship of the Kenwood brand products.
During the warranty period, any authorized Kenwood Service
Center in the military market listed in the back of this warranty
card will provide you free-of-charge both parts and labor
required to correct any defect in materials or workmanship.
The following are not covered by this warranty.
1. Voltage conversions.
2. Periodic check-ups which do not disclose any defect covered
by the warranty.
3. Cabinets, grilles, other exterior fi nishes, belts, tape heads,
and other non-durable parts and accessories.
4. Units on which the serial number has been effaced, modifi ed
or removed.
5. Installation and/or removal charges.
6. Damaged magnetic tapes.
7. House call charges for any repairs.
8. Shipping or delivery charges to or from an authorized
Kenwood Service Center.
9. This warranty will not cover any failure that is due to any of the
following conditions in accordance with the visual inspection
of the authorized Kenwood Service Center:
* Improper maintenance or repair, including the installation of
parts or accessories that do not conform to the quality and
specifi cations of the original parts.
* Misuse, abuse, neglect, unauthorized product modifi cation
or failure to follow instructions contained in the Owner's
Manual.
* Accidental or intentional damages.
* Repairs or attempted repairs by an unauthorized agency.
(All repairs must be performed at an authorized Kenwood
Service Center.)
* Damages or deteriorations caused during shipment (Claims
must be presented to the carrier).
* Damages or deteriorations resulting from removal and/
or replacement.
PURCHASER'S RESPONSIBILITIES
As the purchased of a new Kenwood brand product, you are
requested to do the following in order to obtain Kenwood
warranty service.
1. Retain your sales slip or other evidence of purchase for proving
your eligibility for requesting Kenwood warranty service.
2. Make your unit available to an authorized Kenwood Service
Center in the military market for inspection and approved
warranty service, or ship your unit in its original carton box
or equivalent, fully insured and shipping charges prepaid,
to the authorized Kenwood Service Center.
CANADA
EXCLUSION OF DAMAGES KENWOOD WARRANTY
KENWOOD'S LIABILITY FOR ANY DEFECTIVE PRODUCT IS KENWOOD ELECTRONICS CANADA INC. (hereinafter called
LIMITED TO THE REPAIR OR REPLACEMENT OF THE PRODUCT "KENWOOD"), gives the following written warranty to the
AT OUR OPTION. KENWOOD SHALL NOT BE LIABLE FOR: original customer of each new Kenwood product distributed in
1. INSTALLATION OR REMOVAL CHARGES, DAMAGE Canada by KENWOOD and purchased from a dealer authorized
TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN by KENWOOD.
KENWOOD CAR STEREO COMPONENTS, DAMAGES
KENWOOD warrants that each new Kenwood product, under
BASED UPON INCONVENIENCE, LOSS OF USE OF THE
normal use, is free from any defects, subject to the terms and
PRODUCT; OR
conditions set forth below. If a defect should occur within the
2. ANY OTHER DAMAGES, WHETHER INCIDENTAL,
warranty period, repairs will be made free of charge for parts
CONSEQUENTIAL OR OTHERWISE.
and labour when such defects are determined by KENWOOD
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW
or its' authorized service centres to be attributable to faulty
LONG AN IMPLIED WARRANTY LASTS AND/OR DO NOT
materials or workmanship at time of manufacture. Please
ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
contact KENWOOD to confi rm if a dealer or service centre is
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS
authorized by KENWOOD.
AND EXCLUSIONS MAY NOT APPLY TO YOU.
WARRANTY PERIOD
This warranty gives you specifi c legal rights, and you may also
have other rights which vary from state to state. This Kenwood product is warranted for parts and labour for a
period of one (1) year from the date of original purchase, lease
If a problem develops during or after the Limited Warranty Period, or rental, except for products which are used in a professional
or if you have any questions regarding the operation of the or commercial application, which are warranted for a period
product, you should contact your KENWOOD Authorized Dealer of ninety (90) days for parts and labour and are subject to the
terms and conditions of the warranty.
or Authorized Service Center.
WARRANTY EXCLUSIONS
This warranty excludes:
(a) Products purchased in a foreign country or purchased in
Canada and taken to a foreign country.
(b) Products purchased from a dealer not authorized by
KENWOOD.
(c) Products with the serial number defaced, altered or
missing.
(d) Periodic check-ups which do not disclose any defects
covered by this warranty.
Safety precautions
WARNING
To prevent injury or fire, take the following
precautions:
• Mounting and wiring this product requires skills and
experience. For safety's sake, leave the mounting and
wiring work to professionals.
• 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.
CAUTION
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.
NOTE
• 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.
CAUTION
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.
To prevent battery rise
When the unit is used in the ACC ON position without
turning the engine ON, it depletes the battery. Use it after
starting the engine.
KENWOOD ELECTRONICS CANADA INC.
(e) Defects resulting from disaster, accident, abuse, misuse, ENTIRE WARRANTY
lightning, power surges, neglect or lack of periodic
This warranty constitutes the entire written warranty given
maintenance, unauthorized modifi cation or failure to follow
by KENWOOD. No person, party, dealer or service centre
instructions in the owner's manual.
or their agents or employees are authorized to extend or
(f) Defects or damage as a result of repairs performed by a
enlarge this warranty on behalf of KENWOOD by any written
person or party not authorized by KENWOOD.
or verbal statement or advertisement or promotion, including
(g) Defects resulting from the use of parts or devices that do
any extended warranty program or plan that may be offered
not conform to KENWOOD specifi cations.
by the dealer or service centre, unless approved in writing
(h) Damage or deterioration occurring to any exterior fi nishes,
by KENWOOD.
cosmetic parts, tape heads, adaptors, antennas, cables,
tapes, discs or faults or damage caused by defective or
DISCLAIMER
leaking batteries.
KENWOOD disclaims any responsibility for loss of time or use
(i) Defects or damage occurring during shipping (claims should
of the product or any other indirect, incidental or consequential
be presented to the shipping company).
damage to other products or goods, inconvenience or
(j) Product voltage and /or line frequency conversions.
commercial loss.
(k) Product installation or removal charges.
NOTICE TO CONSUMER
TO OBTAIN WARRANTY SERVICE
The provisions contained in this written warranty are not intended
Should your Kenwood product require warranty service, deliver
to limit, modify, take away, disclaim or exclude any warranties
it to any authorized KENWOOD service centre and present
or rights you may have which are set forth in any applicable
the original copy of your bill of sale and this warranty card
provincial or federal laws or legislation.
as proof of warranty, or send your product fully insured and
freight prepaid to the nearest authorized KENWOOD service
IMPORTANT
centre. To avoid possible shipping damage, make sure the
This warranty card by itself is not considered by KENWOOD as
product is properly packed. Include a copy of your original
a valid proof of purchase. When applying for warranty repairs,
bill of sale and this warranty card as proof of warranty along
you must present the original copy of your bill of sale and this
with your name, home and /or work telephone number(s),
warranty card as proof of warranty, so we recommend that they be
a complete return address and a detailed description of the
kept in a safe place, should they be required in the future.
fault(s). Products repaired within warranty will be returned
freight prepaid to destinations within Canada. The customer
is responsible for all freight and related costs for the return of
product(s) to destinations outside Canada.
Protection function
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 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 detects a low impedance at the speaker
connections.
7 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.
• 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.
• 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.
7 Speaker selection
• Using speakers with smaller input ratings than the
amplifier's output power would result in smoke
generation or equipment failure.
• Use speakers that have an impedance of 4Ω or greater.
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.
<Example>
Combined impedance