Infinity TSSSUB-1200 Service manual

TSS-Sub1200

(TSS-1200 SYSTEM)

SERVICE MANUAL

Infinity Systems Incorporated

250 Crossways Park Dr.

Woodbury, New York 11797 Rev0 12/2006

TSS-Sub1200 subwoofer

Note: The TSS-Sub1200 is part of the TSS-1200 system

Satellite loudspeakers: (Charcoal) order Infinity p a rt# TSS-SAT1200CHR (Platinum) order Infinity part# TSS-SAT1200PLT Center channel: (Charcoal) order Infinity part# TSS1200CHR CEN (Platinum) order Infinity part# TSS1200PLT CEN

CONTENTS

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

DETAILED SPECIFIC ATIONS . . . . . . . . . . . . . . . . . .………. . .. .. .. . . . . . 2

PACKAGING/ACCESSORIES. . . . . . . . . . . . . . . . . .………. . .. .. ... . . . . . 4

CONTROLS. ………………….. .. . …………………………………………….. 5

CONNECTIONS . . . . . . . . . . . ……….………………………………..…. . . . 6

OPERATION……. . . . . .. . . . . . . . .. .. . . . .. .. . . . . ….……… . . ... . . . . . . .7

EXPLODED VIEW-MECHANICAL PARTS LIST….… . ………………………..8

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

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

PCB DRAWINGS. .. . . . . . . . . . . . . . .. . . . . ……………………………….. …11

ELE CTRI CAL PAR T S LIST …………. ………………………………………….13

IC – TRANSISTOR PINOUTS . … . . .. . . . . . ………………………….... . . . 16

SCHEMATIC DIAGRAMS . . …………………………………….……………. . .17

TSS-Sub1200 Specifications

Frequency Range: 29Hz – 150Hz (±3dB) Amplifier Output: 250 Watts RMS; 500 Watts peak Low-Frequency Driver: 12" (305mm) Crossover Frequency: 50Hz – 150Hz, 24dB/Octave, continuously variable Dimensions (H x W x D): 18-1/2" x 12-3/4" x 18-1/2"

(470mm x 324mm x 4 70mm)

Weight: 44 lb (20kg)

Infinit y cont inually str i ves to update and improve existing products, as well as create new ones. The specificati ons and construction detail s i n this and related Infinity publications are therefore subject to change without notice.

TSS-Sub1200 subwoofer

INFINITY TSS-1200 250W Powered Sub/ Plate Amp

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

Parameter Specification Unit

Amp Section

Type (Class AB, D, other) D n/a Load Impedance (speaker) 5.6 Ohms Rated Output Power (120VAC 150 Watts Rated Output Power (230VAC 150 Watts

AVG RMS Dynamic Power 250 Watts AVG RMS Dynamic Power 250 Watts THD @ Rated Power 0.5 % THD @ 1 Watt 0.1 % DC Offset 10 mV-DC

Damping factor >50 DF

Input Sensitivity

Input Frequency 35 Hz L or R input 16.8 mVrms L or R input 16.8 mVrms Gain L & R 140

Signal to Noise

SNR-A-Weighted 90 dBA SNR-unweighted 85 dBr SNR rel. 1W-unweighted 65 dBr

Residual Noise Floor 1 mVrms(max)

US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation

EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required

QA Test

Limits Conditions Notes

n/a n/a

Nominal 125 Domestic version only 120 VAC-60 Hz 125 EU Version only 230 VAC-50 Hz

verage RMS power, 3/20 Cycles 50 Hz, Driven

225

5.6 Ohms

189

4 Ohms

22K filter

0.3

22K filter

Amplifier output

Measured at amplifier board

Nominal Freq.

±2dB

To 1 Watt, Ap Zo=600 Ohms Single input driven, Normal mode

±2dB

To 1 Watt , Ap Zo=600 Ohms Single input driven, LFE mode switch ON

±2dB

43 dB

relative to rated power A-Weighting filter

relative to rated power 22K filter

relative to 1W Output 22K filter

Volume @max, w/ A/P Swept

Bandpass Measurement (Line

1.5

freq.+ harmonics) (BW=20 Khz)

6dB above its input sensitivity sensitivity Reference

Measured at the amplifier board. 120 Watts @ 50 Hz, THD must be less tan 0.1%

Reference

Line level inputs must be terminated using 1KOHM

Input Impedance

Line Input (L, R) > 10K ohms

Filters

LP filter 4th order 50-150 Hz HP Filter 2nd order Fixed LFE Low pass 2nd order 200>LP<1K Hz Notch filter (Friend circuit)

Limiter

THD at Max. Output Power

Features -Volume pot Taper (lin/log) Phase switch LP Filter defeat switch (LFENormal)

Input Configuration

Line In (L,R) & LFE

Signal Sensing (ATO)

Auto-Turn-On (yes/no) YES ATO Input test frequency 50 Hz ATO Level LFE Input 2 mV

ATO Turn-on time 5 ms

Auto Mute/ Turn-OFF Time 15 minutes

n/a n/a functional

LOG --

0-180 deg

YES

YES --

n/a

Nominal

± 10

2nd Order variable and 2nd order fix

LFE input driven only

F=61 Hz, Q=3.607, Av=-8.62dB

Maximum Output Power Maximum THD as a result of limiting.

functional functional

functional Disables LP filter, intended for LFE

functional Dual RCA jack

functional functional functional

functional

Amp connected and AC on, then

input signal applied

T before muting, after line or

speaker level signal is removed

" " Maximum acceptable level.

See AP curves 2nd order variable + 2nd order fix-24 db/Octave

A Taper

Auto turn of time (T) must be 5 > T < 18 Minutes

Power on Delay time 3 sec.

Transients/Pops

ATO Transient 5 mV-peak

AC Power Applied

n/a

@ Speaker Output

TSS-Sub1200 subwoofer

Parameter Specification Unit

QA Test

Limits Conditions Notes

Turn-on Transient 50 mV-peak Turn-off Transient 50 mV-peak

Efficiency

Efficiency 67 %

Stand-by Input Power 20 Watts Power Cons. @ rated power 185 Watts

Protections

Short Circuit Protection YES

Thermal Protection YES

DC Offset Protection YES Line Fuse Rating

USA-Domestic 2 Amps

EU 1.25 Amps

2V-pk-pk 2V-pk-pk

187

functional

1.25

@ Speaker Output AC Line cycled from OFF to ON

@ Speaker Output AC Line cycled from ON to OFF

Nominal Line voltage 120 VAC Maximum allowable input power under nominal

Input voltage and frequency, HOT or COLD @ nom. line voltage @ nom. line voltage 125 Watts into 5.6 Ohms @ nominal line voltage

Direct short at output

@1/8 max unclipped Power at 1.06 times the input voltage

DC present at Speaker Out leads

Type-T or Slo Blo-250 V Internal fuse with UL/SEMKO rated holder Type-T or Slo Blo-250 V, Low Breaking capacity

operation.

Amplifier should resume operation after short

circuit condition removal

Temperature rise in accessible metal parts

should not exceed 35K rise for domestic version

or 30K rise for European versions (refer to

requirements sheet).

Design must insure no Offset at the speaker

output under any operating condition including

abnormal operation

Internal fuse with UL/SEMKO rated holder

TSS-Sub1200 subwoofer

CROSSOVER FREQUENCY

LEVEL

LINE LEVEL IN

PHASE

Min

Max

L R

For LFE use L or R

LFE NORMAL

POWER

50Hz

80Hz

0˚ 180˚

150Hz

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

ON OFF

NRTL/C CSA22.2 UL1492

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.

TSS-Sub1200 subwoofer

SUBWOOFER CONTROLS

Rear Panel

Subwoofer-Level Control

LFE/Normal Switch

Phase Switch

Crossover-Frequency Control

Line-Level (LFE) Inputs

Power Switch

A Few Suggestions

We recommend that you do not operate your speakers or subwoofer with the bass,treble and loudness controls set to full boost.This will place undue strain on your electronics and speakers and could damage them.

The volume control setting on your processor/preamp or receiver is not a specific indication of the overall loudness level of the speakers.The only important consideration is the loudness level at which the system can be played, regardless of where the volume control is set.

Always turn down the volume control setting on your processor/ preamp or receiver when changing a cassette or CD, or switching inputs to AM or FM operation. Excessively loud transients (clicks or popping sounds) can damage the satellite speakers and possibly the subwoofer.

Important!

Whenever changing cables, pulling plugs, etc.,ALWAYS TURN OFF ALL EQUIPMENT, including the subwoofer.

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