Infinity PS410 Service manual

PS Series

PS410 Subwoofer

SERVICE MANUAL

Infinity Systems Incorporated

8500 Balboa Blvd.

Released 2010 Northridge, CA. 91329 Rev0 8/2010 Discontinued XXXX

PS410

- CONTENTS -

BASIC SPECIFICATIONS …………………..……………..1 DETAILED SPECIFICATIONS…………………..……….…..2

PACKAGING……………….……………………….…....….…4

CONTROLS AND CONNECTIONS…………..…….………..5 OPERATION….……………………………………………..….7

EXPLODED VIEW/PARTS LIST …………….….…....……8

TEST SET UP AND PROCEDURE………………..…....……9

BLOCK DIAGRAM…………………………..………….…..…10 ELECTRICAL PARTS LIST (120v) ………………………….11 PCB DRAWINGS……………….……………………………..14 SEMICONDUCTOR PINOUTS……….……………….……..16 SCHEMATICS (120v)………………………………………...17

Basic Specifications PS410 Powered Subwoofer

Frequency Response: 27Hz – 150Hz (±3dB) Maximum Amplifier Output: 300 Watts RMS; 500 Watts Peak

(20Hz – 150Hz with no more than 0.1% THD)

Crossover Frequencies: 50Hz – 150Hz, 24dB/octave, continuously variable Driver: 10" (254mm) MMD® Dimensions (H x W x D): 15-3/4" x 12-1/2" x 16-1/2"

(with grille) (400mm x 318mm x 419mm) Weight: 38.6 lb (17.6kg)

Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice.

PS410

Primus PS410 150W Powered Sub Amp

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

Parameter Specification Unit Amp Section

Type (Class AB, D, other) D n/a n/a Load Impedance (speaker) 4 Ohms n/a Nominal Rated Output Power (120VAC) 150 Watts 145 Domestic version only 120 VAC-60 Hz Rated Output Power (230VAC) 150 Watts EU Version only 230 VAC-50-60 Hz

AVG RMS Dynamic Power 210 Watts 200

THD @ Rated Power 0.5 % 1 22K filter THD @ 1 Watt 0.2 % 0.3 22K filter DC Offset 10 mV-DC 30 Sub amp output

Damping factor >50 DF 35 Measured at amplifier board

Input Sensitivity-120V

Input Frequency 50 Hz 50 Nominal Freq. L&R 9.5 mVrms ±1dB To 1 Watt Single input driven LFE input 9.5 mVrms ±1dB To 1 Watt Single input driven, LFE switch ON System Gain 46.72 dB Reference Single input driven Normal mode

Input Sensitivity-230V

Input Frequency 50 Hz 50 Nominal Freq. L&R TBD mVrms ±1dB To 1 Watt Single input driven LFE input TBD mVrms ±1dB To 1 Watt Single input driven, LFE switch ON System Gain TBD dB Reference Single input driven Normal mode

Signal to Noise

SNR-A-Weighted 90 dBA 85 relative to rated power A-Weighting filter SNR-unweighted 80 dBr 75 relative to rated power 22K filter SNR rel. 1W-unweighted -57 dBr -55 relative to 1W Output 22K filter

Residual Noise Floor 1.5 mVrms(max) 2.5

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

EU 230vac/50-60Hz Yes 207-253 230 Vrms Normal operation, MOMS required

QA Test

Limits

Volume @max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics) (BW=20 KHz)

Conditions Notes

Average RMS power, 3/20 Cycles 50 Hz, Driven 6dB above its input sensitivity sensitivity, average of the first 4 consecutive peaks

Measured at the speaker cable. 150 Watts @ THD < 0.1 % @ 50 Hz

Line level inputs must be terminated using 1KOHM

Input Impedance

Line Input (L, R,LFE) 10K ohms n/a Nominal

Filters

LP filter Variable 50-150 Hz ± 10 2nd order variable + 2nd order fix-24 db/Octave Subsonic filter (HPF) 2rd Order Fixed 12dB/Octave F=31Hz, Q=2

Friend circuit Fixed 60Hz, Q=2, Av=-3.9dB LFE Low pass 200>LP<500 Hz LFE input driven only

Limiter

THD at Max. Output Power N/A N/A functional Maximum Output Power Maximum THD as a result of limiting.

Features

Volume pot Taper (lin/log) LOG -- functional A Taper Phase switch 0-180 deg functional LP Filter defeat switch YES functional Disables LP filter, intended for LFE

Input Configuration

Line In (L,R) & LFE

Signal Sensing (ATO)

Auto-Turn-On (yes/no) YES functional ATO Input test frequency 50 Hz functional ATO Level LFE Input 2.5 mV functional Maximum acceptable level.

ATO Turn-on time 5 ms functional

Auto Mute/ Turn-OFF Time 5-15 minutes 5-15

Power on Delay time

Transients/Pops

ATO Transient 0.5 V-peak 0.5V @ Sub amp output Turn-on Transient 0.5 V-peak 0.8V @ Sub amp output AC Line cycled from OFF to ON

YES -- functional Dual RCA jack

Amp connected and AC on, then input signal applied T before muting, after signal is removed

3 sec. 4 AC Power Applied

Auto turn of time (T) must be 5 > T < 15 Minutes

Amplifier activated by signal presence at the Line input

PS410

Parameter Specification Unit

Turn-off Transient 0.5 V-peak 0.8V @ Sub amp output AC Line cycled from ON to OFF

QA Test

Limits

Conditions Notes

Efficiency

Efficiency 60 % 58 Test conducted at rated power 150 Efficiency at 1/8 of rated power 38 % 37 Test conducted at 18.75 WRMS Nominal Line voltage-Rated impedance 4 Ohms Off state input power 16 Watts 18 Nominal Line voltage RED LED

Stand-by Input Power 24 Watts 26 @ nom. line voltage

Power Cons. @ rated power 250 Watts 260 @ nom. line voltage 150 Watts @ 4 Ohms nominal line voltage

Protections

Short Circuit Protection YES functional Direct short at output

Thermal Protection YES functional

DC Offset Protection YES - DC present at Speaker Out leads

Line Fuse Rating

USA-Domestic 2 Amps 2 Type-T or Slo Blo-250 V Internal fuse with UL/SEMKO rated holder

EU 1.25 Amps 1.25

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

Type-T or Slo Blo-250 V, Low Breaking capacity

Nominal Line voltage

Maximum allowable input power under nominal Input voltage and frequency, HOT or COLD operation.LED GREEN no signal applied

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

PS410

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CROSSOVER FREQUENCY

LEVEL

LINE LEVEL IN

PHASE

Min

L R

For LFE use L or R

Green: On

Red: Standby

50Hz

0º

0Hz

150Hz

POWER

∞

™

FE NORMAL

180º

120V 60Hz

OFF

WARNING:

O REDUCE THE RISK OF FIRE OR ELECTRICAL

HOCK DO NOTEXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

AVERTISSEMENT:

OUR PRÉVENIR LES RISQUES D'INCENDIE OU DE CHOC

LECTRIQUE, ÉVITER D'EXPOSER CET APPAREILA LA PLUIE OU A L'HUMIDITÉ.

NRTL/C CSA22.2 U

L1492

PS410

CONTROLS AND CONNECTIONS

Rear Panel

Subwoofer-Level Control

™

LFE/Normal Selector

Phase Switch

Crossover Adjustment

∞

Line-Level/LFE Input

Power Switch

Status LED

PS210 (120V)

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