INFINITY PRIMUS PS28 150W Powered Sub/ Plate Amp

PS series PS28 subwoofer

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 Class AB

Type (Class AB, D, other)

G

G

n/a

230V Model

 

 

 

 

 

 

Impedance used for electrical

Rated Load Impedance

4

Ohms

n/a

Nominal

measurements

System average impedance

8.79

Ohms

n/a

Average impedance from 10 to 500Hz

 

Voice coil DCR

4.35

Ohms

n/a

 

Reference

Rated Output Power

100

Watts

95

Single input driven

 

THD@ Rated Power

0.5

%

1

22K filter

 

THD @ 1 Watt

0.1

%

0.3

22K filter

 

DC Offset

10

mV-DC

50

@ Speaker Output

 

 

 

 

 

 

Measured at speaker terminals, Output

Damping factor

>100

 

40

 

power 90 Watts

 

 

 

 

 

AVG Power over the first 4 consecutive

 

 

 

Reference

 

peaks, when tested with a burst siganl 3/20

Dynamic power RMS

125

Watts

 

at 50 Hz

Highest RMS value

152

Watts

Reference

 

 

 

 

 

 

 

 

Input Sensitivity

 

 

 

 

 

Input Frequency

50

Hz

50

Nominal Freq.

 

Line Input (L&R)

16.5

mVrms

±2dB

To 1W

Single input driven, AP Zo=600 Ohms

LFE Input

11.7

mVrms

±2dB

To 1W

LFE input driven only, AP Zo=600 Ohms

System Gain (Line input)

41

dB

±1dB

G=118

Single input driven, AP Zo=600 Ohms

System gain (LFE input)

44

dB

±1dB

G=165

LFE input driven only, AP Zo=600 Ohms

 

 

 

 

 

 

Signal to Noise

 

 

 

 

 

SNR-A-Weighted

100

dBA

85

rel. to rated power

A-Weighting filter

SNR-unweighted

85

dBr

80

rel. to rated power

22K filter

SNR @ 1W-unweighted

65

dBr

60

rel. to 1W Output

22K filter

 

 

 

 

Volume @max, w/ A/P Swept Bandpass

 

Residual Noise Floor

1

mVrms(max)

1.5

Measurement (Line freq.+ harmonics)

 

 

 

 

 

 

 

Input Impedance

 

 

 

 

 

Line input L&R , LFE

>10

K ohms

n/a

Nominal

 

 

 

 

 

 

 

Filters

 

 

 

 

 

Low Pass (fixed or variable)

Variable

--

±2dB

Crossover range 50-150 Hz

 

Subsonic filter (HPF)

 

Hz

±2dB

Fixed

 

 

 

 

 

 

 

Limiter (yes/no)

YES

--

Functional

 

 

THD at Max. Output Power

<1

%

Functional

 

 

 

 

 

 

 

 

Features

 

 

 

 

 

Line Level inputs (L&R)

YES

 

Functional

 

Dual RCA conenctor (RED-WHT)

LFE Input

YES

 

Functional

 

Single input (Yellow color)

Phase Switch (yes/no)

YES

 

Functional

 

 

Volume pot Taper (lin/log)

LOG

 

Functional

 

 

Variable crossover

YES

 

Functional

 

 

ATO

YES

 

Functional

 

 

LED indicator

YES

 

Functional

 

Located at the amplifier panel

 

 

 

 

 

 

Input Configuration

 

 

 

 

 

Line In (L,R)

L ,R

--

Functional

 

RCA inputs: L , R Summed to Mono

Line level in LFE

LFE

 

Functional

 

 

 

 

 

 

 

 

Signal Sensing (ATO)

 

 

 

 

 

Auto-Turn-On (yes/no)

YES

--

Functional

 

 

ATO Level @ 50 Hz

1

mV

Functional

One input driven

 

ATO Level @ 1 KHz

1

mV

Functional

One input driven

 

 

 

 

 

Amp connected and AC on, then input

 

ATO Turn-on time

5

ms

Functional

signal applied

 

Auto Mute/ Turn-OFF Time

10

minutes

Functional

T before muting, after signal is removed

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

 

 

 

 

 

 

Power on Delay time

3

sec.

Functional

AC Power Applied

 

 

 

 

 

 

 

Transients/Pops

 

 

 

 

 

ATO Transient

5

mV-peak

10

@ Speaker Outputs

 

Turn-on Transient

50

mV-peak

100

@ Speaker Outputs

AC Line cycled from OFF to ON

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Infinity service manual PS series PS28 subwoofer, INFINITY PRIMUS PS28 150W Powered Sub/ Plate Amp

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.