Kenwood KS-303HT User Manual

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KENWOOD

KS-303HT

SPEAKER SYSTEM
INSTRUCTION MANUAL
KENWOOD CORPORATION
r'
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Your choice of this product indicates that you are a devotee to excellence in sound reproduction. We appreciate your patronage and take pride in the long tra dition of quality components that our company represents. So that you can get the most out of your unit, we suggest that you take the time to read through this manual before you hook up and operate your system. This will acquaint you with operating features and system-connection consid erations so that your listening pleasure will be enhanced right from the start. You will notice that in all aspects of planning, engineering, styling, operating convenience and adaptability we have sought to anticipate your needs and desires.
Keep this manual handy for future reference.
For your records
Record the serial number, found on the back of each 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 dealer for information or ser vice on this product. Model KS-303HT is composed of the front speakers, sub woofer, center speaker and rear (surround) speakers.
FRONT SPEAKER, CENTER SPEAKER, REAR SPEAKER Serial number
SUBWOOFER Serial number
____________________________________
------------------------------------------------------------
/f\Caution: Read this section carefully to ensure safe
operation.
Units are designed for operation as follows.
U.S.A. and Canada
........................................ AC 120 V only
Safety precautions
WARNING:
TOPREVENTFIREORELECTRICSHOCK, DO
NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE
CAUTION
RISK OF ELECTRIC SHOCK
A
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
DO NOT OPEN
A
Unpacking
Unpack the system carefully and make sure that all accesso ries are put aside so they will not be lost. Examine the system for any sign of shipping damage. If your system is damaged or fails to operate, notify your dealer immediately. If your system was shipped to you directly, notify the shipping company without delay. Only the con signee (the person or company receiving the system) can file a claim against the carrier for shipping damage. We recommend that you retain the original carton and pack ing materials for use should you transport or ship the sys tem in the future.
Accessories
Pin-plug cord (1)
Speaker wires (5)
Cushions (4)
O O
O O
Speaker wires: [Red/Black]4.5m(14ft), [Blue/Black]4.5m(14ft),
How to use the cushions
Attach four cushions to the bottom of the subwoofer, on at each corner. The cushions prevent the subwoofer from sliding and dampen its vibrations.
[Orange/Black]6m(19ft), [Gray/Black]6m(19ft), [Green/Black]3m(9ft)
A
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED
"DANGEROUS VOLTAGE" WITHIN THE PRODUCT'S ENCLO SURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CON STITUTE A RISK OF ELECTRIC SHOCK TO PERSONS.
A
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRI ANGLE IS INTENDED TO ALERT THE USER TO THE PRES
ENCE OF IMPORTANT OPERATING AND MAINTENANCE
(SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOM
PANYING THE APPLIANCE.
Contents
Caution: Read the pages marked /¡\ carefully to
ensure safe operation.
Introduction................................................................2
A Before Applying Power..............................................2
^ IMPORTANT SAFEGUARDS......................................3
Installation..................................................................5
Connections Controls and Indicators (Subwoofer)
Maintenance...............................................................9
Troubleshooting.........................................................9
Specifications
...............................................................
.......................
..........................................................
6 8
10
2 KS-303HT(EN)
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IMPORTANT SAFEGUARDS

^Caution: Read this page carefully to ensure safe
operation.
Please read all of the safety and operating instructions before operating this appliance. Adhere to all warnings on the appliance and in the instruction nnanual. Follow all the safety and operating instructions. These safety and operating instructions should be retained for future reference.
1. Power sources - The appliance should be connected to a power supply only of the type described in the instruction manual or as marked on the appliance. If you are not sure of the type of power supply to your home, consult your appliance dealer or local power company. For appliances intended to operate from battery power, or other sources, refer to the instruction manual.
2. Power-cord protection - Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, pay particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.
Never pull or stretch the cord.
CAUTION - Polarization - This appliance may
3.
be equipped with a polarized alternating-current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet.
Do not defeat the safety purpose of the polarized plug.
4.
Ventilation - Slots and openings in the cabinet are
provided for ventilation and to ensure reliable operation of the appliance and to protect it from overheating, and these openings must not be blocked or covered. The appliance
should be situated so that its location or position does not
interfere with its proper ventilation. To maintain good ventilation, do not put records or a table cloth on the appliance. Place the appliance at least 10 cm away from the walls.
Do not use the appliance on a bed, sofa, rug or similar
surface that may block the ventilation openings. This appliance should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided
or the manufacturer's instructions have been adhered to.
6. Temperature - The appliance may not function properly if used at extremely low, or freezing temperatures. The ideal ambient temperature is above +b°C (4rF).
7.
Heat - The appliance should be situated away from
heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.
8.
Electric shock-Care should betaken so that objects do not fall and liquid is not spilled into the enclosure through openings. If a metal objects, such as a hair pin or a needle, comes into contact with the inside of this appliance, a dangerous electric shock may result.
For families with children, never permit children to
put anything, especially metal, inside this appliance.
9.
Enclosure removal - Never remove the enclosure.
If the internal parts are touched accidentally, a serious
electric shock might occur.
10. Magnetic fields - Keep the appliance away from sources of magnetic fields such as TV sets, speaker systems, radios, motorized toys or magnetized objects.
11. Cleaning - Unplug this appliance from the wall outlet before cleaning. Do not use volatile solvents
such as alcohol, paint thinner, gasoline, or benzine,
etc. to clean the cabinet. Use a clean dry cloth.
12. Accessories - Do not place this appliance on an unstable cart, stand, tripod, bracket, or table. The appliance may fall, causing serious injury to a child or adult, and serious damage to the appliance. Use only with a cart, stand, tripod, bracket, ortable recommended by the manufacturer, or sold with the appliance. Any mounting of the appliance should follow the manufacturer's instructions, and should
use a mounting accessory recommended by the manufacturer. An appliance and cart combination should
be moved with care. Quick stops, excessive force, and
uneven surfaces may cause the appliance and cart
combination to overturn.
Water and moisture - The appliance should not be
used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc.
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13. Lightning-For added protection for this appliance during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the appliance due to lightning and power-line surges.
14. Abnormal smell - If an abnormal smell or smoke is detected, immediately turn the power OFF and unplug the appliancefrom the wall outlet. Contact your dealer or nearest service center.
15.Damage requiring service - The appliance should be serviced by qualified service personnel when: A. The power-supply cord or the plug has been damaged. B. Objects have fallen, or liquid has been spilled into the appliance.
C. The appliance has been exposed to rain or water. D. The appliance does not appear to operate normally
by following the instruction manual. Adjust only those controls that are covered by the instruction manual as an
improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the appliance to its normal operation.
E. The appliance has been dropped, orthe enclosure
damaged.
F. The appliance exhibits a marked change in performance.
16.Servicing - The user should not attempt to service
the appliance beyond that described in the instruction
manual. All other servicing should be referred to
qualified service personnel.
17.Outdoor antenna grounding - If an outside antenna is connected to the appliance, be sure the antenna system is grounded so as to provide some protection against voltage surges and built up static charges. Article 810 of the National Electrical Code ANSI/NFPA 70,
provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of
grounding conductors, location of antenna discharge
unit, connection to grounding electrodes, and
requirements forthe grounding electrode. See Figure.
18. Power lines - An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from
touching such power lines or circuits as contact with them might be fatal.
19. AC outlets - Do not connect other audio equipment
with a power consumption larger than that specified to the AC outlet on the rear panel. Never connect other electrical appliances, such as an iron or toaster, to it to prevent fire or electric shock.
20.Overloading - Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock.
21. Attachment - Do not use attachments not recommended by the appliance manufacturer as they may cause hazards.
22. Replacement parts - When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original parts. Unauthorized substitutions may result in fire, electric shock, or other
hazards.
23.Safety check - Upon completion of any service or repairs to this appliance, ask the service technician to perform
safety checks to determine that the appliance is in proper operating condition.
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL
NEC - NATIONAL ELECTRICAL CODE
KS-303HT (EN)
ELECTRICAL CODE
ANTENNA LEAD IN WIRE
ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)
GROUNDING CONDUCTORS (NEC SECTION 810-21)
GROUND CLAMP POWER SERVICE GROUNDING
ELECTRODE SYSTEM (NEC ART 250, PART H)
Notes:
1. Item 3 is not required except for grounded or polarized equipment.
2. Item 17 and 18 are not required except for units provided with antenna terminals.
3. Item 17 complies with UL in the U.S.A.
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Installation

Positioning For Optimal Surround Sound
This speaker system can provide full Surround sound. To enjoy the full effect of the Surround sound field, please position the speakers as described below.
Place the left and right speakers at opposite sides of your TV. Angie the speakers towards the listening area to enhance the stereo effect.
Place the center speaker above or below the TV, so that the center of the speaker is aligned with the center of the TV. Tilt the speaker upward or downward so that it is directly facing the listening area.
Place the rear (surround) speakers as high as possible, either directly to the sides of the listening area or else slightly be hind the listening area. Adjust the angles so that these speak ers are facing directly towards the listeners. ’
Place the subwoofer near a wall to enhance the depth of the bass. For deepest overall bass output, place the subwoofer in a corner.
CAUTION (Subwoofer only)
To assure adequate ventilation, observe the following points when setting up the subwoofer.
• Set the subwoofer so that the heat sink is at least 10 cm (4 inches) away from the wall.
• Be sure that the heat sink is not covered or blocked. Do not drape sheets or other coverings over the subwoofer.
• This subwoofer must be set up vertically. Please do not set it horizontally.
Vertical installation
■ About Using Speakers Near a TV
The front and center speakers include magnetic shielding and can therefore be installed close to a TV set. Note, however, that placing speakers too close to a TV may in some cases produces distortion in the color reception. To ensure that there is no prob lem with color reception, proceed as follows.
1. Install the front and center speakers first (do not install the subwoofer yet), then turn on the TV and check that color re production is normal. If color is distorted, turn the TV off for
15 to 30 minutes, then turn it back on and check again. (This allows the TV's degaussing circuitry to correct for the mag netic field from the speakers.) If distortion is still present,
move the speakers further from the TV.
2. Install the subwoofer. If color distortion is noticeable, turn the TV off for 15 to 30 minutes, then turn it back on and check again. If distortion is still present, move the subwoofer fur ther from the TV.
Installation Methods
• On Floor or Shelf
Place the speakers on the floor or on a shelf or other horizontal stable surface. Keep in mind that speakers are not fixed into place, so be careful to avoid knocking them over.
• On the Wall
The front, center, and rear speakers include mount halls for wall mounting. You can hang the speakers on the wall either verti cally or horizontally. For vertical mount, you use only one screw and hang the speaker from its upper mount hole only. For horizontal mount, you need to set two screws into the wall at the appropriate distance so that you can hang the speaker from both mount holes. Proceed as fol lows. Note that the subwoofer cannot be mounted on the wall.
To hang a speaker vertically:
1. Screw a single screw into the wall at the desired location. Screw it only part way in, so that the screw projects 7 to 9 mm (1/4 to 3/8 inches) outward from the wall surface.
2. Flang the speaker by fitting the top mount hole (at the
upper rear of the speaker) over the extending part of the screw. Confirm that the speaker is held firmly and se curely in place.
To hang a speaker horizontally:
1. Screw two screws into the walls 76 mm (3 inches) apart, mak ing sure that screws are horizontally level. Screw each screw only part way in, so that it projects 7 to 9 mm (1/4 to 3/8 inches) outward from the wall surface.
2. Flang the speaker by fitting the two mount holes (at the rear of the speaker) over the extending part of the screws. Confirm that the speaker is held firmly and securely in place.
7~9 mm
(1/4-3/8")
Feedback (Howling)
Installing the subwoofer too close to an analog record player may result in howling, caused by feedback of sound into the player. You can correct the problem by reducing the subwoofer volume (turn the VOLUME dial counterclockwise) or by moving the subwoofer further from the player. In rare cases, feedback may also occur with cassette decks or with CDs, laser disc, and DVD players. Again, you can correct the problem by reducing the subwoofer volume or moving the subwoofer.
Precautions
Please observe the following precautions when mounting speakers onto the wall.
• Be sure that the wall you are using is strong enough to support the full weight of the speaker (approx. 1.2 g [2.6 Ibl).
• Wall screws must be purchased separately. Be sure to use screws that are appropriate for the wall you are using, and that are long enough to provide sufficient strength.
• If you are uncertain about the wall's support strength, the type of screw to use, or any other points regarding this type of instal
lation, please consult a contractor or other qualified person be
fore proceeding.
Be sure to follow the procedure given here when carrying out in stallation.
Kenwood can assume no liability for injury or damage that may occur if a speaker setup falls from the wall as a result of incorrect installation or insufficient support strength.
Page 6

Connections

Before connecting: __________________________________________________________________________________________
Set the POWER switches on the receiver and subwoofer to OFF. Leaving POWER switches ON while making connections may result in damage to your components.
Method 1: Make connections using the included speaker wires and pin-plug cord. Method 2: If you cannot make connections properly by Method 1, you can also make connections using speaker wires only, without
■ Method 1 : Standard connection (recommended)
Make connections using the included speaker wires and pin-plug cord. Use the speaker wires to connect the front, center, and surround speakers to the corresponding terminals on the rear of your receiver. Use the pin-plug cord to connect the subwoofer's LINE IN (L/MONO) jack to the receiver's SUBWOOFER PRE-OUT jack.
using the pin-plug cord.
1. Twist the wire
2. Push
Right
3. Insert the wire
4. Release
Left
Blue
©
Notes: -------------------------------------------------------------------^---------------------------------------------------------------------------------------------------
1. Be sure to turn off your receiver before connecting or disconnecting speakers.
2. The power-handling capacity of this speaker system is indicated in the specifications. Do not operate the speaker with
power exceeding this limitation, as it may damage the speaker.
3. The left and right front speakers and the surround speakers have a nominal impedance of 8 ohms. To ensure safe and reliable
operation, be sure that your amplifier or receiver is suitable for use with 8-ohm speakers.
• Never short the {+) and (-) speaker wires together.
• Do not reverse L and R or (+) and (-) connections. Reversal of sides or polarities may result in unnatural, incorrectly positioned sound.
Page 7
Connections
■ Metnod 2 : Alternative connection (optional)
Make connections using speaker wires only, without using the pin-plug cord. First, connect the receiver's L and R front-speaker ternninals to the corresponding input terminals on the rear of the subwoofer (the "FROM AMPLIFIER" L/MONO and RIGHT terminals). Then connect the subwoofer's speaker output terminals to the corresponding terminals on the right and left front speakers.
Be sure to connect (+) terminals to (+) terminals, and (-) terminals to (-) terminals. Note that speaker wires for connecting the subwoofer to the speakers or the subwoofer to the receivers must be purchased separately.
■■
Notes: ____________________________________________________________________________________________________
1. Be sure to turn off your receiver before connecting or disconnecting speakers.
2. The power-handling capacity of this speaker system is indicated in the specifications. Do not operate the speaker with
power exceeding this limitation, as it may damage the speaker.
3. The left and right front speakers and the surround speakers have a nominal impedance of 8 ohms. To ensure safe and reliable
operation, be sure that your amplifier or receiver is suitable for use with 8-ohm speakers.
• Never short the (+) and (-) speaker wires together.
• Do not reverse L and R or (+) and (-) connections. Reversal of sides or polarities may result in unnatural, incorrectly positioned sound.
Important: _________________________________________________________________________
If you are using the subwoofer terminals to connect to your front speakers, be sure that your amplifier or receiver is suitable for use with 8-ohm impedance.
Page 8

Controls and Indicators (Subwoofer)

0
L
Front
© PHASE switch
The phase relation between the subwoofer and front speak ers varies according to the the distances, and the subwoofers setup location. Set the phase switch to NOR. (normal phase) or REV (reversed phase) so as to get the best bass sound at the location at which you normally listen.
(g) CROSSOVER knob
Adjust as necessary for optimal volume of the subwoofer and frequency balance of speakers.
(3) VOLUME knob
Use this dial to adjust the volume of the subwoofer and
speakers.
® LINE INPUT (R . L/MONO) terminal
Use to connect to the corresponding SUBWOOFER PRE­OUT jacks on your receiver. If your receiver has only one SUBWOOFER PRE-OUT jack, make the connection using the L/MONO jack.
® LINE OUTPUT (R . L) terminal
These jacks relay the signals received at the corresponding LINE INPUT jacks.
® Speaker Input/Output Terminals
Use to connect to the corresponding FRONT SPEAKERS jacks on your receiver. Connect the FROM AMPLIFIER ter minals to the front-speaker output terminals on your re ceiver.
Use to connect to the front speakers. The TO SPEAKERS terminals relay the signals received at the corresponding FRONT AMPLIFIER terminals.
© POWER switch
Switches the power ON and OFF.
Rear
©
©
® ®
®
STANDBY/ON indicator
Comes on to indicate that power is being supplied. Lights up GREEN during normal operation; lights up RED if the subwoofer has been switched into standby mode by the AUTO SHUTOFF feature.
• Standby mode
During Standby mode (while the STANDBY indicator is lit RED), a small amount of current continues to flow into the unit's internal circuitry so that memory and logic re
main active. The indicator goes off if power is off (if the POWER switch is at the OFF position, or if the subwoofer is not plugged in).
AUTO SHUTOFF switch
Use this switch to set the automatic shutoff feature ON or OFF. If you set this ON, the subwoofer will automatically enter standby mode if it does not receive a signal from the
receiver for a period of 30 minutes. The subwoofer will auto matically resume normal power when output from the re ceiver resumes.
Power cord
Connect to an AC power outlet.
0 Duct
Extends the low-frequency output.
Loudspeaker
Caution concerning operation:---------------------
Be careful to keep the input level to the subwoofer within reasonable limits. Overloading the input will distort the
sound quality and may damage the subwoofer. Please ob
serve the following precautions.
1. If supplying a high-volume signal, do not over-boost the bass at the receiver side. (Avoid excessive use of the receiver's bass control or other tone adjusters.)
2. Turn the subwoofer volume to its minimum level when mak ing major changes to the sound input (for example, when first switching on the amplifier or when first dropping the needle onto a vinyl record).
Page 9

Maintenance

You can clean the panel of subwoofer and casing by wiping with a soft cloth. Never clean with alcohol, benzene, paint thinner, or other such solvents, as these may cause discoloration.
Contact Restorers
Never use contact restoring agents to restore electrical connections, as these may cause the subwoofer to fail. Agents that include oil may in addition lead to deformation of the plastic.

Troubleshooting

If the subwoofer does not seem to be working correctly, the following advice may help you correct the problem.
f>osi^le Cause Correction
No sound.
Volume is too low.
Note:
-------------------------------------------------------------------------
If the power fails to come on or operation is abnormal, the subwoofer may require repair. Set the POWER switch back to OFF, unplug the power cord, and contact your dealer or nearest service center.
• Wires are not securely connected.
• The volume is turned all the way down.
• The receiver's SUBWOOFER PRE-OUT signal is switched off. (Applies only if your receiver includes a pre-put on/off switch.)
• Speaker wires are reversed.
• The phase setting is not appropriate.
• The receiver's SUBWOOFER PRE-OUT level is set to the minimum. (Applies only if your receiver includes a pre-out level adjustment.)
^-----------------------------------------------------------------------------------------------
..............................................................................
• Connect the wires securely. (Refer to "Connections".)
• Raise he volume to an appropriate level.
• Switch on the SUBWOOFER PRE-OUT signal at the receiver.
• Reconnect so that L, R, (+), and (-) con nections are correct. (Refer to "Connec tion".)
• Change the setting of the PFIASE switch.
• Raise the SUBWOOFER PRE-OUT level at the receiver.
1 See.pase
6, 7 pages
8 page
7 page
8 page
Page 10

Specifications

Front speaker. Center speaker. Rear speaker
Front speaker
System
Enclosure Loudspeaker
Woofer:
Tweeter: Nominal Impedance Peak Input Power Maximum Input Power SOW Sensitivity Frequency Response Crossover Frequency 3,000 Hz Dimensions Width: 129 mm(5-1/16")
Height: Depth: 120 mm(4-3/4")
Net Weight
Acoustic Air Suspension
2 way
(Magnetically shielded)
100 mm{4") Cone type
50 mm(2") Cone type
SO.
88 dB / W at 1 m
100 Hz~20,000 Hz
198 mm(7-13/16")
1.2 kg (2.6 lb) /piece 1.0 kg (2.2 lb)
Center speaker
2 way
(Magnetically shielded)
Acoustic Air Suspension Acoustic Air Suspension
100 mm(4") Cone type
50 mm(2") Cone type
sa sn
sow
40 W
88 dB / W at 1 m 85dB/Wat1 m
100 Hz~20,000 Hz 100 Hz~20,000 Hz
3,000 Hz
129 mm(5-1/16") 129 mm(5-1/16")
198 mm(7-13/16")
120mm(4-3/4")
Rear speaker
1 way
100 mm(4”) Cone type
(Full Range type)
— —
SOW
40 W
198 mm(7-13/16")
120 mm(4-3/4'')
0.8 kg (1.8 lb) /piece
Subwoofer
System
Output Power
c o
Input Sensitivlty/Impedance
+3
o
0) (A
o
'S
3
<
.2
(D
0) u
CL 0)
CO «
"<5
0> c 0>
O
RCA-type pin-plug jack (LINE IN): Push-type terminals:
Turn Over Frequency
Phase Switching Enclosure Loudspeaker Nominal Impedance Frequency Response Power Consumption Supply Voltage
Dimensions Width:
Net Weight Enclosure Finish
Height: Depth:
Subwoofer system with built-in amplifier
50 Watts RMS, at 4Q from 40 Hz to 160 Hz
with no more than 0.09% total harmonic distortion
100 mV/43 kii, 200 mV/43 kQ (MONO)
1.8V/1.2 kQ
80 Hz ~ 160 Hz
NORMAL, REVERSE
Bass-Reflex
200 mm (8") Cone type
4a
40 Hz ~ 250 Hz
now
AC120V, 60 Hz 286 mm (11-1/4") 368 mm (14-1/2")
356 mm (14")
11.2 kg (24.7 lb)
High density particle board laminated with simulated wood grain vinyl.
NOTE: THE GRILLES ON ALL THE SPEAKERS CANNOT BE REMOVED.
Notes:
---------------------------------------—-—
1. Kenwood follows a policy of continuous advancements in development. For this reason, specifications may be changed
withou notice.
2. Full performance may not be exhibited in extremely cold locations (below 0 deg. C).
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