JBL SCS-180.6-SI Service manual

Surround Cinema Series

Models: SCS150SI

SCS160SI

SCS180.6S

Home Theater Speaker Systems

SERVICE MANUAL

JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797	Rev4 10/2005

SCS150SI/SCS160SI/SCS180.6S

- CONTENTS -

BASIC SPECIFICATIONS……………….……….……………….1 DETAILED SPECIFICATIONS ……..………………..…………..2 CONNECTIONS…………… …..……………...…………..……...3 OPERATION………………………………………………………. 6 BASIC TROUBLESHOOTING……..……….…………………….7 EXPLODED VIEW……..……….………………………………….8 TEST SET-UP AND PROCEDURE……..……….………..……..9 PCB DRAWINGS…………… ……..………………..…….……..10 MECHANICAL/SATELLITE PARTS LIST………………………16 ELECTRICAL PARTS LIST ……………....……………….…….17

IC/TRANSISTOR PINOUTS……..…….…………………..…….22 SCHEMATICS …………………………………………..…….23

PACKING..………….………………………………..…………….26

SCS150SI/SCS160SI/SCS180.6S Systems

Frequency Response 30Hz – 20kHz (–6dB)

Satellites

Recommended Power

10 – 100 watts

Impedance

8 ohms nominal

Sensitivity

88dB @ 1 watt/1 meter

Tweeter

One 1/2" (13mm) titanium laminate dome, video-shielded

Midrange

Dual 3" (75mm) drivers, videoshielded

Dimensions (H x W x D)

8-1/8" x 3-1/2" x 3-7/8"

(206mm x 89mm x 99mm)

Weight

2.65lb/1.2kg

Center

Recommended Power

10 – 100 watts

Impedance

8 ohms nominal

Sensitivity

88dB @ 1 watt/1 meter

Tweeter

One 1/2" (13mm) titanium laminate dome, video-shielded

Midrange

Dual 3" (75mm) drivers, videoshielded

Dimensions (H x W x D)

3-1/2" x 8-1/8" x 3-7/8" (89mm x 206mm x 99mm)

Weight

2.65lb/1.2kg

Subwoofer

Amplifier

150 watts RMS

Woofer

10" (254mm) woofer, bass-reflex enclosure

Dimensions (H x W x D)

17-3/4" x 15-3/4" x 16-3/4" (451mm x 400mm x 426mm)

Weight

35 lb/15.9kg

Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications unless otherwise stated

1

SCS150SI/SCS160SI/SCS180.6S

150W Powered Sub/ Plate Amp

LINE VOLTAGE	Yes/No	Hi/Lo Line	Unit	Notes
US 120vac/60Hz	Yes	108-132	Vrms	Normal Operation
Asia 100vac/50Hz	Yes	90-110	Vrms	Normal Operation
Parameter	Specification	Unit	QA Test Limits	Conditions	Notes
Amp Section
Type (Class AB, D, other)	D	D	n/a
Load Impedance (speaker)	4	Ohms	n/a	Nominal
Rated Output Power	150	Watts	145	1 input driven
THD@ Rated Power	0.08	%	1	22k filter
THD @ 1 Watt	0.1	%	0.5	22k filter
DC Offset	10	mV-DC	20	@ Speaker Outputs
					Measured at speaker terminals, Output
Damping factor	>100	DF	30		power 140 Watts THD 0.1 %
Input Sensitivity
Input Frequency	50	Hz	50	Nominal Freq.	1 input driven
Line Input (L&R)	250	mVrms	±2dB	To Rated Power	1 input driven
LFE Input	145	mVrms	±2dB	To Rated Power	LFE input driven only
Speaker/Hi Level Input	2	Vrms	±2dB	To Rated Power	(-20 dB below Line In)...1 input driven
Signal to Noise
SNR-A-Weighted	100	dBA	85	rel. to rated power	A-Weighting filter
SNR-unweighted	90	dBr	80	rel. to rated power	22k filter
SNR @ 1W-unweighted	60	dBr	55	rel. to 1W Output	22k filter
				Volume @max, using RMS reading
Residual Noise Floor	1	mVrms	2	DMM/VOM (or A/P)
				Volume @max, w/ A/P Swept Bandpass
Residual Noise Floor	1	mVrms(max)	2	Measurement (Line freq.+ harmonics)
Input Impedance
Line input L&R , LFE	>15	K ohms	n/a	Nominal
Speaker/Hi Level Input	4.7	K ohms	n/a	Nominal
Filters
Left & Right Low Pass fixed	Hz	--	±2dB
Slope & Q	4th	dB/Octave	n/a
LFE Low Pass fixed	Hz	--	±2dB
Slope & Q	2nd	dB/Octave	n/a
Subsonic filter (HPF)	Hz	--	±2dB
Slope & Q	2nd	dB/Octave	n/a
Limiter	YES	--	n/a
Features
LFE Input	YES		functional		BW Limited to 500 Hz
Volume pot Taper (lin/log)	log	--	functional
ATO	YES		functional
Signal Sensing (ATO)
ATO test Frequency	50	Hz	functional	2mV@50Hz into Line Input w/ 1 ch.
ATO Line Level	2	mV	functional
				driven
ATO Speaker level input	50	mV	fucntional	50mV@50Hz into Line Input w/ 1 ch.
				driven
				Amp connected and AC on, then input
ATO Turn-on time	5	ms	functional	signal applied
Auto Mute/ Turn-OFF Time	15	minutes	functional	T before muting, after signal is removed	Auto turn of time (T) must be 10 > T <15
Power on Delay time	3	sec.	functional	AC Power Applied
Transients/Pops
ATO Transient	5	mV-peak	10	@ Speaker Outputs
Turn-on Transient	50	mV-peak	100	@ Speaker Outputs	AC Line cycled from OFF to ON
Turn-off Transient	50	mV-peak	100	@ Speaker Outputs	AC Line cycled from ON to OFF
Efficiency
					Maximum allowable input power under
					nominal Input voltage and frequency, HOT
Stand-by Input Power	14	Watts	16	@ nom. line voltage	or COLD operation.
Power Cons.@rated power	230	Watts	250	@ nom. line voltage	140 Watts @ 4 Ohms nominal line voltage
Protection
Short Circuit Protection	YES	--	functional	Direct short at output
					Temperature rise should not exceed 35K
Thermal Protection	65 deg. C	--	functional	@1/8 max unclipped Power	rise
DC Offset Protection	YES	--	functional	DC present at Speaker Out leads	Relay or crowbar (for driver/fire protection)
Line Fuse Rating
US Version	3.15	Amps		Type-T or Slo Blo	External fuse with UL/SEMKO rated holder

2

SCS150SI/SCS160SI/SCS180.6S

S P E A K E R C O N N E C T I O N S

Connection Tips

To use the binding-post speaker terminals on the subwoofer, unscrew the colored collar until the pass through hole in the center post is visible under the collar. Insert the bare end of the wire through this hole; then screw the collar down until the connection is tight. The hole in the center of each collar is intended for use with banana-type connectors.

3

SCS150SI/SCS160SI/SCS180.6S
Dolby* Pro Logic* (Non-Digital) – Speaker Level
Use this installation method	Left Front				Center			Right Front
for Dolby Pro Logic appli-	+	–						+	–
					+	–
cations (not Dolby Digital,
DTS® or other digital
processing), where the
receiver/processor does not
have a subwoofer output, or					Subwoofer
a volume-controlled preamp
(line-) level output:					HIGH LEVEL
Connect your receiver or				L			R
			+		–	–		+
amplifier’s front left and right
speaker terminals to the left		OUT
and right terminals on the
subwoofer that are marked		IN
“High Level In.” Connect the
left and right terminals on the
subwoofer that are marked
“High Level Out” to the cor-					Receiver
responding terminals on the
back of your front left and		Left Front			Center			Right Front
right speakers.		+	–		+	–		+	–
Connect your receiver or
amplifier’s center, left and
right surround-speaker
terminals to the corre-		Left Surround						Right Surround
sponding terminals on the
		+	–					+	–
back of your center, left and
right surround speakers.

Left Surround

Right Surround

+

–

+

–

4

SCS150SI/SCS160SI/SCS180.6S
Dolby Pro Logic (Non-Digital) – Line Level
Use this installation method				Use RCA-type patch cords				Pro Logic processors. Note: If
for Dolby Pro Logic appli-				to connect the line-level				your receiver or amplifier only
cations (not Dolby Digital, DTS				subwoofer outputs on your				has one subwoofer output
or other digital processing),				receiver or amplifier to the				jack, then you will need to use
where the receiver/processor				line-level inputs on the				a Y-connector (not included).
is equipped with a subwoofer				subwoofer. IMPORTANT: Do				Plug the male end of the Y-
output, or a volume-controlled				not use the LFE input on the				connector into your receiver
preamp (line-) level output:				subwoofer with Dolby				or amplifier’s subwoofer
Left Front			Center			Right Front		output jack, and connect each
			+	–				of the two female ends to
								separate RCA-type patch
+	–					+	–
								cords. Finally, plug the RCA-
								type patch cords into the line-
			Subwoofer					level inputs on the subwoofer.
			Line-					Connect each speaker to
			Level
				In				the corresponding speaker
			L					terminals on your receiver
			R					or amplifier.
			Receiver					Make sure your receiver or
	Left		Subwoofer		Right			processor is correctly
	Front	–		Out	Front	–		configured to indicate that the
	+				+			subwoofer is “On.”
			R	L				Note for advanced users: If
	Left				Right
			Center					your receiver/processor has a
	Rear				Rear
	+	–	+	–	+	–		built-in low-pass crossover
								filter for the subwoofer output,
								you may use the LFE input to
Left Surround						Right Surround		bypass the subwoofer’s
								internal crossover.

+				–	+				–

Dolby Digital or DTS (or Other Digital Surround Mode) Connection

	RECEIVER			SUBWOOFER				Use this installation method	terminals on your receiver
								for Dolby Digital, DTS or other	or amplifier.
				LINE LEVEL IN				digital surround processors:	Make sure that you have
						L		Use the line-level input jack	configured your surround-
	LFE OUT			LFE INPUT
								marked “LFE” for the Low-	sound processor for
						R
								Frequency Effects channel.	“Subwoofer On.” The front
								Connect this jack to the LFE	left, front right, center and
								output or subwoofer output	rear speakers should all be
								on your receiver or amplifier.	set to “Small.”
								Connect each speaker to the
								corresponding speaker

5

SCS150SI/SCS160SI/SCS180.6S

O P E R A T I O N

Move the Master Power	is not sending program	When the “Auto/On” switch
switch (marked “Power” ¡)	material to the subwoofer,	™ is switched to the “On”
to the “•” (On) position to use	the subwoofer will be in	position, the subwoofer will
the subwoofer. The	standby mode. When the sub-	remain on, whether or not
subwoofer will automatically	woofer senses an audio signal,	program material is playing.
turn itself on or go into	it will automatically turn itself	If you will be away from
standby (sleep) mode when	on. If the subwoofer does	home for an extended period
left in the standby mode	not sense a signal after	of time, or if the subwoofer
(“Auto/On” switch ™ in the	approximately twenty minutes,	will not be used, switch the
“Auto” position). When your	it will automatically go into	Master Power switch ¡ to
receiver or amplifier is off, or	standby mode.	the Off position.

	HIGH LEVEL						™
				LINE LEVEL IN		SUBWOOFER
+	L –	–	R +				LEVEL
OUT				LFE	L		£
IN					AUTO	ON
					R	MIN	MAX
					GREEN: ON
IMPORTANT: CONNECT STRIPED WIRE TO RED ( + ) SPEAKER TERMINAL.					RED: STANDBY

3.15A/250V TYPE T

WARNING: FOR CONTINUED

PROTECTION AGAINST RISK

OF FIRE, REPLACE ONLY WITH

SAME TYPE 3.15A, 250 VOLT FUSE

AVERTISSEMENT: UTILISEZ UN

FUSIBLE DE RECHANGE DE MEME

TYPE 3.15A, 250V

JBL, Incorporated

A Harman International Company

This area is designed to become quite warm during normal operation

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS : RISQUE DE CHOC ÉLECTRIQUE-NE PAS OUVRIR

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. AVERTISSEMENT: POUR PRÉVENIR LES RISQUES D'INCENDIE OU DE CHOC ÉLECTRIQUE, ÉVITER D'EXPOSER CET APPAREIL

A LA PLUIE OU A L'HUMIDITÉ.

POWER

¡

AC 120V~60Hz

250 Watts

Volume

Volume can be adjusted using the Subwoofer Level Control £ (above), as shown below.

	Subwoofer	Subwoofer
	Level
		Level

MIN MAX MIN MAX

6

SCS150SI/SCS160SI/SCS180.6S

T R O U B L E S H O O T I N G

	If there is no sound from any	that is working correctly. Turn		is not in phantom mode.
	of the speakers:	everything back on, and		• If your receiver/processor
	• Check that receiver/amplifier	determine whether the		is set in Dolby Digital or DTS
	is on and a source is playing.	problem is in the same place,		mode, make sure the
	• Check that the powered	i.e., the speaker that was		receiver/processor is con-
	subwoofer is plugged in, and	working previously now has		figured so that the center
	its Power switch ¡ is	no sound and the speaker that		speaker is enabled.
	switched on to the “•”	was not working now sounds
	position.	fine; or whether it has moved,		If the system plays at low
	• Check all wires and con-	i.e., the speaker that was not		volumes but shuts off as
	nections between receiver/	working still has no sound and		volume is increased:
	amplifier and speakers. Make	the speaker that was working		• Check all wires and con-
	sure all wires are connected.	is still fine. If the problem is in		nections between receiver/
	Make sure none of the	the same place, the source of		amplifier and speakers. Make
	speaker wires are frayed,	the problem is most likely with		sure all wires are connected.
	cut or punctured.	your receiver or amplifier, and		Make sure none of the
	• Review proper operation of	you should consult the owner’s		speaker wires are frayed, cut
	your receiver/amplifier.	manual for that product for		or punctured.
		further information. If the		• If more than one pair of main
	If there is no sound coming	problem has followed the		speakers is being used,				check
	from one speaker:	speaker, consult your dealer		the minimum impedance
	• Check the “Balance” control	for further assistance or, if		requirements of your
	on your receiver/amplifier.	that is not possible, visit our		receiver/amplifier.
	• Check all wires and con-	Web site at www.jbl.com for
	nections between receiver/	further information.		If there is low (or no) bass
	amplifier and speakers. Make			output:
	sure all wires are connected.	If there is no sound from the		• Make sure the connections
	Make sure none of the	center speaker:		to the left and right “Speaker
	speaker wires are frayed,	• Check all wires and		Inputs” have the correct
	cut or punctured.	connections between		polarity (+ and –).
	• In Dolby Digital or DTS	receiver/amplifier and		• Make sure the subwoofer
	modes, make sure that the	speaker. Make sure all wires		is plugged into an active
	receiver/processor is	are connected. Make sure		electrical outlet.
	configured so that the speaker	none of the speaker wires are		• Make sure the powered
	in question is enabled.	frayed, cut or punctured.		subwoofer is plugged in, and
	• Turn off all electronics and	• If your	receiver/processor is	its Power switch ¡ is
	switch the speaker in question	set in Dolby	Pro Logic mode,	switched on to the “•”
	with one of the other speakers	make sure	the center speaker	position.
				• In Dolby Digital or DTS
				modes, make sure your
				receiver/processor is
				configured so that the
				subwoofer	and LFE		output
				are enabled.

7

SUB150/160/180 EXPLODED VIEW

Ref#	Description	Part Number	Qty
1	SUB150/160/180 CABINET	NOT FOR SALE	1
2	FOOT – MAIN PLASTIC BODY	(SCS150SI) WI5447	4
	“	(SCS160SI) 321-ABS-00008	4
	“	(SCS180.6) 321-ABS-00008-0LA	4
3	FOOT – RUBBER BOTTOM	(SCS150SI) WI5448	4
	“	(SCS160SI/180.6) 321-ABS-00009	4
4	FOOT SCREW T4*30L	06-T43005	4
5	10” WOOFER	25MF12DZB-DW02	1
6	AMPLIFIER/WOOFER SCREWS T4*20L	06-T4205012	15
7	SUB150/160/180 AMPLIFIER	NOT FOR SALE	1

8