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Infinity PS28 - page 1
PS Series PS28 Subwoof er SERVICE MANUAL Infinity Systems, Inc. 250 Cr ossw ays Par k D r. W oodbury, New Y or k 11797 Rev1 3/2007 ...
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Infinity PS28 - page 2
- CONTENTS - BASI C SPECI FI CATI ONS …………………..……………..1 DETAILED SPECI F ICATI ONS…………………..……….…..2 PACK AGI NG……………….……………………….…....….…4 CONTROLS A ND CONNECTI ONS…………..…….………..5 OPERA TI ON….……………………………………………..? ...
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Infinity PS28 - page 3
INFINITY PRIMUS PS28 150W Powered Sub/ Plate Amp LINE VOLTAGE Yes/No Hi/Lo Line Unit Notes US 120VAC/60Hz Yes 108-132 Vrms Normal Operation Europe 220-240VAC, 50-60Hz Yes 220-230 Vrms Normal Operation Parameter Specification Unit QA Test Limits Conditions Notes Amp Section Type (Class AB, D, other) AB AB n/a 120V model External Sink required for Cl ...
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Infinity PS28 - page 4
Parameter Specification Unit QA Test Limits Conditions Notes Turn-off Transient 50 mV-peak 100 @ Speaker Outputs AC Line cycled from ON to OFF Efficiency Stand-by Input Power 12 Watts 15 @ nom. line voltage Maximum allowable input power under nominal Input voltage and frequency, HOT or COLD operation. Power Cons.@rated power 195 Watts 210 @ nom. li ...
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P S s e r i e s P S 2 8 s u b w o o f e r 4 ...
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PS28 (120V) Rear Panel C ONTROLS AND C ONNECTIONS ¡ Subwoofer -Le vel Contr ol ™ Crosso ver Adjustment £ Phase Switch ¢ LFE Input ∞ Line-Lev el Inputs § Power Switch § ¡ ™ £ ∞ ¢ FUSE T 2.5A L 250V TYPE AC ~ 120V 60HZ 200 Watts ® Primus PS28 (120V) OM 10/2/06 10:24 AM Page 4 P S s e r i e s P S 2 8 s u b w o o f e r 5 ...
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Infinity PS28 - page 7
PS28 (120V) If you ha ve a Dolby ® Digi tal or DTS ® receiver/processor wi th a low-frequency eff ects (LFE) or subwoof er output: SUBWOOFER OR LFE OUTPUT If your receiv er/processor does no t contain a Dolby Digit al or DTS processor but has a subwoof er output: NOTE: Some r eceiver s have one subwoofer output. In that case, it is recommended th ...
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Infinity PS28 - page 8
O PERA TION Pow er On Plug your subwoofer’ s AC cor d into a wall outlet. Do not use the outlets on the back of the recei ver . Initially set the Subwoofer -Lev el Control ¡ to the “min” position. T urn on your sub by pr essing the Power Switch § on the r ear panel. Turn o n your entire audio system and start a CD or mo vie soundtrack at a ...
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Infinity PS28 - page 9
8 P S s e r i e s P S 2 8 s u b w o o f e r ...
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PS 28 Tes t Se t U p a n d P roc e dur e SYST EM A U R A L SWEEP TEST Equi pm ent need ed: • Func tion /sig nal ge ner ator/sw eep ge nerator • I ntegrate d Ampl ifier • M ult imet er • Sp eaker ca bles General Uni t Funct ion (UUT = Uni t Under Test) Swi tch es/kn obs o n t he am pli fier fac epl ate: Low Pass Fr eque ncy Adj ust full C W ...
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PS28 T r ouble shooti ng Flow Chart no ye s ye s ye s no y e s y e s LED re d LED li ght green yes ye s no ye s ye s n o no ye s y e s y e s no n o ye s ye s y e s n o y e s ye s A M P n o si gn al out DC vo lta g e check ±Vcc Check+/-15VDC L ED l i gh t gr e e n or re d Check Fuse,Transf o r mer , D1 10, etc Check R Y101,D102, Q1 13,Q1 14 et c Ch ...
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Infinity PS28 - page 14
PS 28 (120v) Electrical Parts List Part Number Description Qty Reference Designator PREAMP PCB Resistors 110-14122j26-e Resistor 1.2K 1/4W ±5% CF 26mm (RoHS) 1 R270 110-16102j26-e Resistor 1K 1/6W ±5% CF 26mm (RoHS) 5 R213,R214,R215,R254,R253 110-16103j26-e Resistor 10K 1/6W ±5% CF 26mm (RoHS) 12 R212,R216,R217,R220,R221,R222,R225,R226,R228, R23 ...
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Infinity PS28 - page 15
Part Number Description Qty Reference Designator POWER/MAIN PCB Resistors 110-14472j26-e Resistor 4.7K 1/4W ±5% CF 26mm (RoHS) 2 R147,R150 110-14681j26-e Resistor 680 Ω 1/4W ±5% CF 26mm (RoHS) 2 R148,R151 110-16101j26-e Resistor 100 Ω 1/6W ±5% CF 26mm (RoHS) 1 R120 110-16102j26-e Resistor 1K 1/6W ±5% CF 26mm (RoHS) 1 R124 110-16103j26-e Res ...
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Infinity PS28 - page 16
Part Number Description Qty Reference Designator POWER/MAIN PCB 192-027c1815gr-e transistor 2SC1815GR TOSHIBA(RoHS) NPN 2 Q101,Q115, 192-201d882y-e transistor KSD882Y (RoHS) PNP 1 Q117, 192-202b772y-e transistor KSB772Y (RoHS) PNP 1 Q119, 192-991d669a-e transistor HI-SINCERITY HSD669A (RoHS) NPN 1 Q106, 192-992b649t-e transistor HSB649T (RoHS) PNP ...
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Infinity PS28 - page 17
Part Number Description Qty Reference Designator MISCELLANEOUS/MECHANICAL 123-14j70d-e Ferrite Core U-16.3*8.2*13 (J70)+CASE (RoHS) 1 130-3f472md00-e disc capacitor 4700P 400V ± 20% safy long foot (RoHS) 1 150-e8604107-e transformer EI-86 60Hz 120V TT0869906580 1 T1 152-u602015-e power line cord polar SVT FT-2 6FT double insulation (RoHS) 1 154-u2 ...
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