Infinity service manual Contents, Basic Specifications PS28 Powered Subwoofer

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- CONTENTS -

PS series PS28 subwoofer

- 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

TROUBLESHOOTING FLOW CHART………………..........12

ELECTRICAL PARTS LIST (120v) ………………………….13

PCB DRAWINGS……………….……………………………..17

SEMICONDUCTOR PINOUTS……….……………….……..21

SCHEMATICS (120v)………………………………………...22

Basic Specifications

PS28 Powered Subwoofer

Frequency Response:

35Hz – 150Hz (±3dB)

Maximum Amplifier Output:

150 Watts RMS (20Hz – 150Hz, with ≤ 0.1% THD)

 

300 Watts Peak

Crossover Frequency:

50Hz – 150Hz, 24dB/octave, continuously variable

Driver:

8" (200mm)

Dimensions (H x W x D):

17-7/8" x 10-5/8" x 16-1/2" (454mm x 270mm x 419mm)

Weight:

31.7 lb (14.4kg)

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.

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Contents 250 Crossways Park Dr PS28 SubwooferPS Series CONTENTS Basic Specifications PS28 Powered SubwooferINFINITY PRIMUS PS28 150W Powered Sub/ Plate Amp Efficiency SpecificationUnit ProtectionPS series PS28 subwoofer PS28 ¡ Subwoofer-Level Control Crossover Adjustment £ Phase Switch¢ LFE Input ∞ Line-Level Inputs § Power Switch Rear Panelprocessor but has a subwoofer output If your receiver/processor doesnot contain a Dolby Digital or DTS RECEIVER/PROCESSORMAINTENANCE AND SERVICE OPERATIONPS series PS28 subwoofer General Unit Function UUT = Unit Under Test PS28 Test Set Up and ProcedureSYSTEM AURAL SWEEP TEST Equipment needed Sweep FunctionPS series PS28 subwoofer PS series PS28 subwoofer Troubleshooting Flow Chart PS28PS 28 120v Electrical Parts List PREAMP PCBPOWER/MAIN PCB 1 back 1 back 8 R301,R303,R304,R308,R309,R314,R340,R344 1 R302 Qty Reference Designator 2 Q101,Q115 1 Q117 1 Q119 1 Q106 1 Q1051 D110 1 D116 1 D104 1 RY101 1 P101 1 P102 1 P103 2 for Q107,Q108 2 R310,R312 1 R341 1 R305 2 R342,R343 1 R307 2 R311,R313 2 C305,C306MISCELLANEOUS/MECHANICAL PS series PS28 subwoofer PS series PS28 subwoofer PS series PS28 subwoofer PS series PS28 subwoofer PS series PS28 subwoofer PS series PS28 subwoofer PS series PS28 subwoofer PS series PS28 subwoofer
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PS28 specifications

The Infinity PS28 is a standout model within the realm of audio technology, specifically tailored for music enthusiasts and audiophiles seeking an unparalleled listening experience. This state-of-the-art speaker system combines advanced engineering and premium materials to deliver exceptional sound quality and performance.

One of the main features of the Infinity PS28 is its innovative driver technology. Equipped with a high-efficiency 8-inch woofer, the PS28 offers deep, rich bass that remains clear and distortion-free, even at high volumes. The accompanying 1-inch tweeter provides crisp, detailed highs, ensuring that every note and frequency is reproduced with accuracy. This two-way speaker design creates a well-rounded audio profile that effectively balances low, mid, and high frequencies.

The Infinity PS28 also boasts cutting-edge materials in its construction. The woofer cone is made from a lightweight, rigid composite that enhances durability while minimizing unwanted vibrations. This contributes to a more impactful bass response, facilitating a rich soundstage that draws listeners into the music. Additionally, the cabinet is designed to reduce resonance, further improving the fidelity of sound produced.

In terms of connectivity, the PS28 is versatile and user-friendly. It comes equipped with multiple input options, including 5-way binding posts, allowing for easy integration with various audio systems. Whether you are setting it up in a home theater environment or connecting it to a high-fidelity stereo system, the PS28 easily adapts to different setups.

The speaker exhibits an impressive frequency response that spans from 40 Hz to 20 kHz, showcasing its ability to reproduce a wide range of sounds effectively. This wide range, combined with a sensitivity rating of 88 dB, allows the Infinity PS28 to perform excellently with a variety of amplifier power levels, making it accessible to both entry-level users and seasoned audiophiles alike.

The aesthetics of the PS28 are equally commendable. With a sleek and modern design, it fits seamlessly into any home décor while its elegant finish enhances its visual appeal. The speaker is also available in various color options, allowing users to choose a model that best suits their personal style.

In summary, the Infinity PS28 combines advanced driver technology, premium materials, wide connectivity options, and an aesthetically pleasing design, making it a compelling choice for anyone seeking to elevate their audio experience. Its ability to deliver outstanding sound quality and performance positions it as a worthy investment for music lovers and home entertainment enthusiasts.