JBL TSSSUB-4000 Service manual

TSS-SUB4000

SERVICE MANUAL

Infinity Systems Incorporated

250 Crossways Park Dr.

Woodbury, New York 11797 Rev

1 10/2005

TSS-SUB4000

CONTENTS

BASIC SPECIFICATIONS . . . . . . . . . ………………………………………….1

DETAILED SPECIFICATIONS . . . . . . . . . . . …………………………………. 2

CONTROLS. ………………….. .. . …………………………………... . . . . . . .4

CONNECTIONS . . . . . . . . . . . ……….………………………………..…. . . . 5

OPERATION……. . . . . .. . . . . . . . .. .. . . . .. .. . . . . ….……… . . ... . . . . . . .6

EXPLODED VIEWS-MECHANICAL PARTS LIST….… . … . . . . . .. . … . ….7

TEST SET-UP & PROCEDURE……………………….. .. .. . . …………….. .9

BLOCK DIAGRAM. . . . ………………... ………………………………… . … . 10

TROUBLESHOOTING FLOW CHART…………………….…………………….11 SERVICE NOTE - POWER TRANSFORMER…………………….…………12 ELECTRICAL PARTS LIST …………………… ………………..………………13 PCB DRAWINGS. . . ………………... …………………………………………..17

IC – TRANSISTOR PINOUTS . … . . .. . . . . . ………………………….... . . . 20

SCHEMATIC DIAGRAMS (120v). . ………………………………………..…. . .21

PACKAGING. ………………….. .. . ……… ………………………... . . . . . . 31

SPECIFICATIONS

Frequency Response 28Hz – 150Hz (–3dB)

24Hz – 180Hz (–6dB)

Maximum Amplifier Output 400 watts RMS

(20Hz – 150Hz with no more than 0.1% THD) Crossover Frequency 150Hz, 12dB/octave Driver 12" (305mm) MMD® Dimensions (H x W x D) 17-1/2" x 17-1/4" x 11-1/8"

(445mm x 438mm x 283mm) Weight 48 lb (21.8kg)

Infinity c ontinually strives to update and improve ex isting products, as well as create new ones. The specificat ions and construction details i n this and relat ed Infi nity publicati ons are t her efore subject to change without notice.

TSS-SUB4000

TSS-4000 subwoofer 300W Powered Sub/ Plate Amp

LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes

US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation EU 230vac/50-60Hz No 207-264 230 Vrms Normal operation, MOMS required Asia 100vac/50Hz No 90-110 100 Vrms Normal Operation

Parameter Specification Unit Amp Section

Type (Class AB, D, other) D --Load Impedance (speaker) 4 Ohms Nominal Z-curve required Rated Output Power 300 Watts Regulated 120 V line 5% tollerance applies THD@ Rated Power 1 % 22k filter, 50Hz 300W +/- 5% THD @ 1 Watt 0.5 % 22k filter, 50Hz DC Offset undefined mV-DC < 20 @ Speaker Outputs Damping factor 20 N/A > 15 measured at 50 Hz

Input Sensitivity

Line/Hi Level Input Phase N/A

Line Input 370 mV mVrms 300 W @ 50Hz 1 input driven

Speaker/Hi Level Input N/A

Signal to Noise

SNR-A-Weighted 100 dBA relative to rated power A-Weighting filter SNR-unweighted 70 dBr relative to rated power 22k filter SNR rel. 1W-unweighted 60 dBr relative to 1W Output 22k filter

Residual Noise Floor 2 mVrms

Residual Noise Floor 1

Input Impedance

Line Input 10 k ohms Nominal

Speaker/Hi Level Input N/A

mVrms(max)

QA Test

Limits

Volume @max, using RMS reading DMM/VOM (or A/P) Volume @max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)

Conditions Notes

Active Filters Low Pass (fixed or variable)

Frequency 130 Hz

Slope 24 dB/Octave

Q Butterworth --

Subsonic filter (HPF) fixed --

Frequency 35 Hz

Slope 12 dB/Octave

Q 1.2 --

Line Out Filter (HPF) NONE --

Frequency Hz

Slope dB/Octave

Q --

Friend Circuit FIXXED --

Frequency 66 Hz Hz notch filter

Slope 6 dB/Octave

Q 1.2 --

Video Boost NONE --

Boost dB

Range Hz

Special filter RABOS --

Switches

Main Power ON/OFF YES --

Type rocker -- Located on amp plate TV-5

Rabos ON/OFF YES --

Type mini togle -- Located on amp plate

Polarity Switch YES -- "Off": 0°; "On": 180°

Type mini togle -- Located on amp plate

FIXXED --

Limiter (yes/no) YES compressor and limiter

TSS-SUB4000

Parameter Specification Unit

THD at Max. Output Power less than 10% Maximum Output Power Maximum THD as a result of limiting.

Output Volume Control

Volume Control Pot YES -- mounted on amp panel

Detent (center/#) NO --

Taper (lin/log) log A taoer --

@ minimum setting no output

Input/Output Phase

Line Input vs. Hi Input N/A °

Lo/Hi Input vs. Lo/Hi Output N/A °

Input/Output

Line In (L,C,R,AC3,Mono) Stereo -- RCA phono jack, gold plated LFE In YES -- Shared with "R" Line In jack

Signal Sensing (ATO)

Auto-Turn-On (yes/no) YES -ATO Input Test Frequency 100 Hz ATO Input Threshold 2 mV typ. LPF "On", BOS "Off" ATO Low Pass cutoff 400 Hz 450 ATO-LPF for noise immunity LPF "On", BOS "Off"

ATO Turn-on time 1 ms 10

Auto Mute / Turn-OFF Time 10 minutes 5 < t < 15

QA Test

Limits

Amp connected and AC on, then input signal applied ( 1 W output ) Time before muting, after signal is removed

Conditions Notes

Power on Features

Power on Delay time greater than 2sec. AC Power Applied Power on LED YES --

Normal On/Off green / red color ATO mode only

ATO -- color "Active": green; "Standby": red

Transients/Pops

ATO Transient 5 mV-peak @ Speaker Output Turn-on Transient 30 mV-peak @ Speaker Output AC Line cycled from OFF to ON Turn-off Transient 30 mV-peak @ Speaker Output AC Line cycled from ON to OFF

Efficiency

Stand-by Input Power 10 Watts typ. @ nom. line voltage AC Power Cons.@1W 12 Watts typ. @ nom. line voltage

Power Cons.@rated power 473 Watts typ. @ nom. line voltage Input power measured is REAL Watts, not VA Efficiency 63 % typ. @ nom. line voltage

Protection

Short Circuit Protection YES -- Direct short at output Thermal Protection YES -- threshold ~ 65 deg. C at panel

DC Offset Protection YES -Line Fuse Rating ( 120 V ) 3.15 Amps Type ADL or MDL Fuse holder on inside surface of amp panel

AC Power & Transformer

Power cord length 9 feet

Bi-color LED located on front of cabinet

DC present at Speaker Out leads

Double insulated cord, AWG#18

Relay for driver/fire protection

TSS-SUB4000

CONTROLS AND CONNECTIONS

Rear Panel

™

•

Subwoofer Level (Volume) Control

™

Line-Level Inputs

Normal/LFE Low-Pass Selector

Phase Switch

∞

Power Switch

e Bass Optimization System Controls

Adapt

Room

R.A.B.O.S.Selector

R.A.B.O.S.Level Adjustment

•

R.A.B.O.S. Bandwidth Adjustment

R.A.B.O.S. Center-Frequency Adjustment

∞

(see pa

ge 5)

TSS-SUB4000

CONNECTIONS

If you have a Dolby* Digital or DTS®receiver/processor with a low-frequency-effects (LFE) output:

• Set Low-Pass Switch to Off.

If your receiver/processor has subwoofer outputs for the left and right channels:

• Set Low-Pass Switch to On.

NOTE: In this case, you do not need to use a Y connector. Simply connect the LFE output on your receiver/processor to either the left or right input on the subwoofer.

NOTE: Some receivers have a single subwoofer output (do not confuse this with a single LFE output as described to the left). In that case, it is recommended that you use a Y connector (not included) to maximize performance.

TSS-SUB4000

OPERATION

Power On

Plug your subwoofer’s AC cord into a wall outlet.Do not use the outlets on the back of the receiver.

Initially set the Subwoofer Level (Volume) Control “min”position.

Turn on your sub by pressing the Power Switch ∞on the rear panel.

to the

Auto On/Standby

With the Power Switch ∞in the ON position, the Power Indicator LED on the front of the subwoofer will remain backlit in red or green to indicate the On/Standby mode of the subwoofer.

RED = STANDBY (No signal detected,Amp Off) GREEN = ON (Signal detected,Amp On)

The subwoofer will automatically enter the Standby mode after approximately 10 minutes when no signal is detected from your system.The subwoofer will then power ON instantly when a signal is detected. During periods of normal use,the Power

∞

Switch for extended periods of nonoperation,e.g., when you are away on vacation.

can be left on.You may turn off the Power Switch

∞

Adjust Gain

Turn on your entire audio system and start a CD or movie soundtrack at a moderate level.Turn up the Subwoofer Level (Volume) Control the subwoofer,check the AC-line cord and input cables. Are the connectors on the cables making proper contact? Is the AC plug connected to a “live”receptacle? Has the Power Switch been pressed to the “On”position? Once you have confirmed that the subwoofer is active, proceed by playing a CD,record or cassette. Use a selection that has ample bass information.

about halfway.If no sound emanates from

∞

Low-Pass Selector

If you have a Dolby Digital or DTS processor/receiver, the

ossover Frequency is set by the processor/receiver. Consult

Cr your owner’s manual to learn how to view or change this setting. In this case, the Low-Pass Selector We strongly recommend this setup method.

hen this switch

W reproduce frequencies below 150Hz.

is in the

£ should be set to “Off”.

“On”position, the subwoofer will

Phase Control

The Phase Switch ¢ determines whether the subwoofer speaker’s piston-like action moves in and out with the main speakers,0,˚ or opposite the main speakers,180˚. Proper phase adjustment depends on several variables such as room size, subwoofer placement and listener position.Adjust the phase switch to maximize bass output at the listening position.

Set the overall volume control of the preamplifier or stereo to a comfortable level. Adjust the Subwoofer Level (Volume) Control

until you obtain a pleasing blend of bass. Bass response should

verpower the room but rather should be adjusted so there

not o

monious blend acr

is a har users have a tendency to set the subwoofer volume too loud,

ing to the belief that a sub

adher

his is not entir

of bass

extending the response of the entire system so the bass

bass can be felt as well as heard.However,overall balance must be maintained or the music will not sound natural. An

ienced listener will set the

xper

e its impact on bass r

oss the entire musical range.Many

er is ther

woof

ue.A subwoofer is there to enhance

ely tr

olume of the subwoof

esponse is alw

ays there but never obtrusive.

e to pr

oduce lots

er so

TSS-SUB4000

TSS-SUB4000 EXPLODED VIEW

Ref # Description Part Number Qty

1 Grille 329-120-05097-0VA 1 2 Woofer/Trim Ring Screw 351-AM04030A893 8 3 Trim Ring 213-120-05033-0BA 1 4 Woofer 12" (305mm) MMD 30PR14BW-DW01 1 5 Port Tube 249-HIPS-05021-0VA 1 6 TSS-SUB4000 Amplifier Not for Sale 1 7 Amplifier Screw 352-FM04020D605 12 8 TSS-SUB4000 Cabinet Not for Sale 1

9 Rubber Foot 320-RUB-05030-0BA 4 10 Foot Screw 352-CM04025D604 4 11 Gasket 333-EVA-05091-0WA 1 12 LED 166-A055A8GX 1 13 Plastic Plate Not Serviceable 1 14 Aluminum Plate Not Serviceable 1

Not

Shown

Power Transformer 150-R1107008 1

TSS-SUB4000

Ref # Description Part Number Qty

1 Screw 352-CM03530D926 11 2 Damping 1 3 Main Mounting Bolt 1 4 Tube Gasket 2 5 Rubber 398-RUB-05093 1 6 Gasket 2 7 Rubber Gasket 336-RUB-05013 1 8 Damping 1

9 Power Transformer 150-R1107008 1 10 Nut 1 11 Damping 1

TSS-SUB4000

TSS-SUB4000 Test Set Up and Procedure

SYSTEM AURAL SWEEP TEST Equipment needed:

• Function/signal generator/sweep generator

• Multimeter

• RCA cables

General Unit Function (UUT = Unit Under Test)

Switches/knobs on the amplifier faceplate:

Phase switch – either position Low Pass switch – Off RABOS switch – Off

1. From the signal generator, Connect both right and left line level inputs (RCA jacks) – to signal generator and UUT. Use Y-cable if necessary from mono source.

2. On the amplifier, turn the LEVEL control full Counterclockwise (Min).

3. Turn on generator, adjust to 125mV, 50 Hz.

4. Plug in UUT; turn the power switch ON. Turn LEVEL control full Clockwise (Max).

5. LED (on front panel) should now be Green; immediate bass response should be heard and felt from rear port tube opening.

Sweep Function

1. Follow steps 1-5 above, using a sweep generator as a signal source.

2. Sweep generator from 20Hz to 1kHz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofer and test.

Driver Function (Woofer)

1. Remove woofer from cabinet (follow steps on exploded view page); detach + and - wire clips.

2. Check DC resistance of woofer; it should be 3.5 ohms±10%.

3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.

4. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.

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