JBL SCS178 User Manual

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O W N E R ’ S G U I D E
PRODUCT LINE:
	®
MODEL	SCS178 (230V)
NUMBER:

DESIGN GOAL: Bring the thrill of live performance and movie sound to the home environment by calling on JBL’s professional engineering leadership.

SATELLITE TYPE:Titanium-laminate-dome tweeter, reflex-loaded enclosure

SUBWOOFER TYPE: Bass-reflex enclosure

PORT DESIGN: FreeFlow™ flared

PROFESSIONAL REFERENCE: Cinema Loudspeaker Series

R

E A D

T H I S !

Important Safety Precautions!

Active (Powered) Products:

9. Wall or Ceiling Mounting. The product

CAUTION

should be mounted on a wall or ceiling only

19. Ventilation. Slots and openings in the

when and as recommended by the manu-

cabinet are provided for ventilation and to

RISK OF ELECTRIC SHOCK

facturer.

ensure reliable operation of the product and

DO NOT OPEN

10. Cleaning. Unplug this product from the

to protect it from overheating, and these

wall outlet before cleaning. Do not use liquid

openings must not be blocked or covered.

CAUTION: To prevent electric shock,

cleaners or aerosol cleaners. Use a damp

The openings should never be blocked by

do not remove the grounding plug

cloth for cleaning.

placing the product on a bed, sofa, rug, or

on the power cord, or use any plug

11. Attachments. Do not use attachments not

other similar surface. This product should not

or extension cord that does not have

recommended by the product manufacturer,

be placed in a built-in installation such

as a

a grounding plug provided.

Make certain that the

as they may cause hazards.

bookcase or rack unless proper ventilation is

AC outlet is properly grounded.

12. Replacement Parts. When replacement

provided or the manufacturer’s instructions

have been adhered to.

Do not use an adapter plug

parts are required, be sure the service tech-

Make certain that the proper space (more

with this product.

nician has used replacement parts specified

The lightning flash with arrowhead

by the manufacturer or that have the same

than 10cm) is provided both above and below

symbol, within an equilateral triangle, is

characteristics as the original part.

the unit for ventilation. If the amplifier will be

intended to alert the user to the

presence of uninsulated “dangerous

Unauthorized substitutions may result in fire,

installed in a cabinet or other enclosed area,

voltage” within the product’s enclosure

electric shock or other hazards.

make certain that there is sufficient air

that may be of sufficient magnitude to

constitute a risk of electric shock to

13. Safety Check. Upon completion of any

movement within the cabinet, with means

persons.

provided for hot air to exit and for cool air to

service or repairs to this product, ask the

The exclamation point within an

be brought in.

equilateral triangle is intended to alert

service technician to perform safety checks

Do not obstruct the ventilation slots on the

the user to the presence of important

to determine that the product is in proper

operating and maintenance (servicing)

operating condition.

top of the unit or place objects directly over

instructions in the literature

accompanying the appliance.

14. Feet/Spikes. When positioning, or moving

them. Remember, power amplifiers generate

heat, and the heatsink fins and ventilation

this product ensure that is lifted rather than

slots that form part of the cabinet are spe-

General:

dragged across any floor/mounting surface.

cially designed to remove this heat. Placing

1. Unpacking: Check the product carefully. If

This will avoid any damage to the floor/-

other electronic equipment near these heat-

mounting surface. Attention! Products and/or

it has been damaged in transit, report the da-

dissipation systems may possibly affect the

product feet constructed of rubber or plastics

mage immediately by calling your dealer

long term reliability of both your amplifier and

may, in seldom cases, react chemically and

and/or the shipping company that delivered

the objects placed above it.

discolor treated or non-treated wooden sur-

it.

Do not place CDs, record jackets, owner’s

faces if positioned without protection.

2. Connections: Whenever changing, con-

15. Warranty: The following conditions may

manuals or other paper on top of or beneath

necting or disconnecting signal or power

the unit or in between products containing

result in a void product warranty:

cables etc., always turn off all equipment.

amplifiers in a stack. This will block the air

a. the manufacturers serial number is remo-

This prevents transients from entering the

flow, causing degraded performance and a

equipment and prevents electrical energy

ved or forged.

possible fire hazard.

from reaching you. Keep all connections out

b. if repairs and/or modifications and/or other

20. Power Sources. This product should be

of the reach of children. Before moving the

treatments/tunings have been carried out

operated only from the type of power source

unit, be certain to disconnect any intercon-

by non-authorized personnel or

indicated on the marking label. If you are not

nection cords with

other components, and

accessories/supplements are attached,

sure of the type of power supply to your

make certain that

you disconnect any powe-

which are not approved by

home, consult your product dealer or local

red units from the

AC outlet.

manufacturer/importer.

power company. For products intended to

3. Read Instructions.

All the safety and

16. Warranty: The following items are not

operate from battery power, or other sources,

operating instructions should be read before

covered by the product warranty:

refer to the operating instructions.

the product is operated.

a. Damage caused by inappropriate handling

21. Grounding or Polarization. This product

4. Retain Instructions. The safety and ope-

despite clear instructions provided in the

may be equipped with a polarized alternating-

rating instructions should be retained for

owners manual.

current line plug (a plug having one blade

future reference.

b. Damage to mechanical parts (such as

wider than the other). This plug will fit into the

5. Heed Warnings. All warnings on the pro-

record-/playback heads, moving rubber

power outlet only one way. This is a safety

duct and in the operating instructions should

and plastic parts and fuses) as well as

feature. If you are unable to insert the plug

be adhered to.

results of normal wear and tear.

fully into the outlet, try reversing the plug. If

6. Follow Instructions. All operating and use

c. Damage caused by external action or

the plug should still fail to fit, contact your

instructions should be followed.

influence.

electrician to replace your obsolete outlet.

7. Water and Moisture. The product should

d. Damage caused by miss-use by user.

Do not defeat the safety purpose of the

polarized plug.

not be used near water – for example, near a

e.

Damage

caused by excessive electrical

22. Power-Cord Protection. Power-supply

bathtub, washbowl, kitchen sink, laundry tub,

mains supply voltage or lightning strike.

in a wet basement, or near a swimming pool,

cords should be routed so that they are not

f. Damage caused by fire, water or smoke.

and the like.

likely to be walked on or pinched by items

8. Accessories. To ensure proper operation

g. Damage known to buyer prior to purchase.

placed upon or against them, paying parti-

h. Damage caused by professional employ-

cular attention to cords at plugs, con-

and to avoid the potential for safety hazards,

place the unit on a firm and level surface.

ment of home entertainment products (e.g.

venience receptacles, and the point where

When placing the unit on a shelf, be certain

for catering trade, restaurants, public ad-

they exit from the product. To avoid safety

that the shelf and any mounting hardware

dress or infinite loop announcement use

hazards, use only the power cord supplied

can support the product’s weight. Do not

etc.)

with your unit. If a replacement cord is used,

place this product on an unstable cart, stand,

17. Specifications: All product specifica-

make certain that it is of a similar gauge. We

tripod, bracket, or table. The product may fall,

tions/features are subject to change without

do not recommend using extension cords

with this product. As with all electrical

causing serious injury to a child or adult, and

notification.

devices, do not run power cords under rugs

serious damage to the product. Use only with

Passive Products:

or carpets or place heavy objects on power

a cart, stand, tripod, bracket, or table recom-

18. Amplifiers: Amplifiers used to drive these

cords. Damaged power cords should be

mended by the manufacturer, or sold with the

units must deliver a sufficient output power. A

replaced immediately, by a qualified service

product. Any mounting of the product should

lack of output power may lead to amplifier-

technician, with cords meeting factory

follow the manufacturer’s instructions, and

clipping, which causes damage not covered

specifications. When disconnecting the

should use a mounting accessory recom-

by guarantee.

power cord from an AC outlet, always pull the

mended by the manufacturer.

plug; never pull the cord.

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	23. Non-use Periods. The power cord of		26. Damage Requiring Service. Unplug this	27. Servicing. Do not attempt to service
	the product should be unplugged from the		product from the wall outlet and refer	this product yourself, as opening or
	outlet when left unused for long periods of		servicing to qualified service personnel	removing covers may expose you to
	time.		under the following conditions:	dangerous voltage or other hazards. Refer
	24. Lightning. For added protection for this		a. The power-supply cord or the plug has	all servicing to qualified service personnel.
	product during a lightning storm, or when it		been damaged; or	28. Object and Liquid Entry. Never push
	is left unattended and unused for long		b. Objects have fallen, or liquid has been	objects of any kind into this product
	periods of time, unplug it from the wall		spilled into, the product; or	through openings, as they may touch
	outlet and disconnect the antenna or cable		c. The product has been exposed to rain or	dangerous voltage points or short-out
	system. This will prevent damage to the			parts that could result in a fire or	electric
			water; or
	product due to lightning and power-line			shock. Never spill liquid of any kind on the
			d. The product does not operate normally
	surges.			product. The apparatus shall not be
			when following the operating
	25. Overloading. Do not overload wall out-			exposed to dripping or splashing and no
			instructions. Adjust only those controls
	lets, extension cords, or integral conven-			objects filled with liquids, such as vases,
			that are covered by the operating
	ience receptacles, as this can result in a			shall be placed on the apparatus.
			instructions, as an improper adjustment
	risk of fire or electric shock.			29. Heat. The product should be situated
			of other controls may result in damage
				away from heat sources such as radiators,
			and will often require extensive work by
				heat registers, stoves or other products
			a qualified technician to restore the
				(including amplifiers) that produce heat.
			product to its normal operation; or
				Avoid installation in extremely hot or cold
			e. The product has been dropped, or the
				locations, in an area that is exposed	to
			enclosure damaged; or
				direct sunlight or near heating equipment.
			f. The product does not appear to operate
				When positioning the product in its final
			normally or exhibits a marked change in	location, make certain that it has adequate
			performance.	ventilation on all sides, as well as on the
				top and bottom.

T H A N K Y O U F O R C H O O S I N G J B L

	For more than 50 years, JBL	We’re confident that the JBL	or office, you will once again
	has been involved in every	system you have chosen will	choose JBL.
	aspect of music and film	provide every note of enjoment
	recording and reproduction,	that you expected – and that	JBL Consumer Products
	from live performances to the	when you think about
	recordings you play in your	purchasing additional audio
	home, car or office.	equipment for your home, car

I N C L U D E D

Four satellites for left/right	One center channel speaker.	Powered subwoofer.
front and surrounds.
	Two 6.1-meter (20-foot) speaker	Three 12.2-meter (40-foot)
	cables for connection from	speaker cables for connection
	receiver to subwoofer.	from receiver to left and right
		rear satellites and center
	Two 4.6-meter (15-foot) speaker	speaker.
	cables for connection from
	subwoofer to front speakers.	3

S P E A K E R P L A C E M E N T
Front Speakers	Center Channel Speaker	Subwoofer
	0 – 0.6m (0 – 2 ft.)
Surround Speakers
	150-180 cm

The front speakers should be	The two surround speakers		room. However, the best
placed the same distance from	should be placed slightly		reproduction of bass will be
each other as they are from the	behind the listening position		heard when the subwoofer is
listening position. They should	and, ideally, should face each		placed in a corner along the
be placed at about the same	other and be at a level higher		same wall as the front
height from the floor as the	than the listeners’ ears. If that		speakers. Experiment with
listeners’ ears will be, or they	is not possible, they may be		subwoofer placement by
may be angled toward the	placed on a wall behind the		temporarily placing the
listeners.	listening position, facing for-		subwoofer in the listening
	ward. The surround speakers		position and moving around the
The center channel speaker	should not call attention to		room until the bass
should be placed slightly	themselves. Experiment with		reproduction is best. Place the
behind the front left and right	their placement until you hear a		subwoofer in that location.
speakers, and no more than	diffuse,	ambient sound
two feet above or below the	accompanying the main
tweeters of the left and right	program material heard in the
speakers. It is often convenient	front speakers.
to set the center speaker on top	The low-frequency material
of the television set, as shown	reproduced by the subwoofer is
in the drawing.	mostly omnidirectional, and this
	speaker may be placed in a
	convenient location in the

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