Infinity Classia PSW310W Manual

Infinity Subwoofer Classia PSW310W

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Side 1/24

INFINITY CLASSIA

™

CoMPACT POWERED SUBWOOFER

OWNER

’

S GUIDE

PSW310W (120V)

INFINITY CLASSIA PSW310W (120V)

FEDERAL COMMUNICATIONS COMMISSION

INTERFERENCE STATEMENT

This equipment has been tested and found to comply with

the limits for a Class B digital device, pursuant to Part 15

of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in

a residential installation.

This equipment generates, uses and can radiate radio

frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful

interference to radio communications. However, there

is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful

interference to radio or television reception, which can

be determined by turning the equipment off and on, the

user is encouraged to try to correct the interference by

one of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment

and receiver.

• Connect the equipment into an outlet on a circuit

different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV

technician for help.

FCC Caution: To assure continued compliance, any

changes or modifications not expressly approved by the

party responsible for compliance could void the user’s

authority to operate this equipment. (Example – use only

shielded interface cables when connecting to computer

or peripheral devices.)

FCC Radiation Exposure Statement

This equipment complies with FCC RF radiation exposure limits

set forth for an uncontrolled environment. This equipment

should be installed and operated with a minimum distance

of 20 centimeters between the radiator and your body.

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and

(2) This device must accept any interference received,

including interference that may cause undesired operation.

IMPORTANT SAFETY PRECAUTIONS

READ FIRST!

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in

accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators,

heat registers, stoves or other apparatus (including

amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or

grounding-type plug. A polarized plug has two blades with

one wider than the other. A grounding-type plug has two

blades and a third grounding prong. The wide blade or the

third prong is provided for your safety. If the provided plug

does not fit into your outlet, consult an electrician for

replacement of the obsolete outlet.

10. Protect the power cord from being walked on or

pinched, particularly at plugs, convenience receptacles

and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the

manufacturer.

12. Use only with the cart, stand, tripod,

bracket or table specified by the

manufacturer or sold with the apparatus.

When a cart is used, use caution when

moving the cart/apparatus combination to avoid injury from

tip-over.

13. Unplug this apparatus during lightning storms or when

unused for long periods of time.

14. Refer all servicing to qualified service personnel.

Servicing is required when the apparatus has been

damaged in any way, such as power supply cord or plug

is damaged, liquid has been spilled or objects have fallen

into the apparatus, or the apparatus has been exposed to

rain or moisture, does not operate normally or has been

dropped.

15. Do not expose this apparatus to dripping or splashing

and ensure that no objects filled with liquids, such as

vases, are placed on the apparatus.

16. To completely disconnect this apparatus from the

AC Mains, disconnect the power supply cord plug from

the AC receptacle.

17. The mains plug of the power supply cord shall remain

readily operable.

18. Do not expose batteries to excessive heat such as

sunshine, fire or the like.

The lightning flash with arrowhead symbol,

within an equilateral triangle, is intended to

alert the user to the presence of uninsulated

“dangerous voltage” within the product’s

enclosure that may be of sufficient magnitude to constitute

a risk of electric shock to persons.

The exclamation point within an equilateral

triangle is intended to alert the user to

the presence of important operating and

maintenance (servicing) instructions in

the literature accompanying the product.

WARNING: To reduce the risk of fire or electric shock,

do not expose this apparatus to rain or moisture.

INFINITY CLASSIA PSW310W (120V)

Table of Contents

ii Important Safety Precautions

1 Unpacking the Subwoofer

1 Placement

2 Controls and Connections

3 System Connections

4 Operation

5 Room Adaptive Bass Optimization System (R.A.B.O.S.)

6 Contents of the R.A.B.O.S.Test CD

6 The R.A.B.O.S. Sound-Level Meter (RSLM)

6 RSLM Placement

7 Initial System-Level Setting

7 Setting the Subwoofer Test Level

7 Performing Low-Frequency Measurements

9 What Does a Parametric Equalizer Do?

9 Completing the R.A.B.O.S. Measurement Template

10 Using the Width Selector

11 Level

11 What You Measure,What to Do

14 Adjusting the R.A.B.O.S. Equalizer

15 Final System Balance

16 Maintenance and Service

17 R.A.B.O.S. Measurement Templates

19 Specifications

INFINITY CLASSIA

™

PSW310W OWNER

’

S GUIDE

iii

INFINITY CLASSIA

™

PSW310W

The Infinity Classia PSW310W continues the legendary Infinity

dedication to accurate sound reproduction.The patented Ceramic

Metal Matrix Diaphragm (CMMD

) drivers, high-powered amplifier

and proprietary Room Adaptive Bass Optimization System

™

(R.A.B.O.S.

™

) technology, along with a rigid, well-braced

enclosure, combine to deliver uncompromised bass performance

in any stereo or multichannel home theater.

In addition, the PSW310W’s compact enclosure and

wireless capability allow for easy integration into any

residential environment.

UNPACKING THE SUBWOOFER

If you suspect damage from transit, report it immediately to your

dealer. Keep the shipping carton and packing materials for

future use.

Included

1 x Owner’s manual

1 x USA warranty sheet

1 x Subwoofer

1 x 15' (4.5m) Audio cable, RCA-RCA

4 x Spiked feet

1 x Transmitter module

1 x Power supply for transmitter

1 x 120V two-prong AC power cord for transmitter power supply

1 x 6' Audio cable, RCA-RCA

1 x Wall-mount bracket for transmitter

2 x With two panhead M3 x 4 machine screws for attaching

wall-mount bracket to transmitter

4 x Small, round, self-adhesive feet – to be attached on

transmitter’s left-side panel if transmitter is to be

used vertically

PLACEMENT

Since the installation of a subwoofer can be somewhat more

complicated than installing full-range speakers, it is essential

that you read this section very carefully prior to connecting the

subwoofer to your system. Should you have questions relating to

your installation, it is advisable to call either your dealer or the

Infinity Customer Service Department for advice.

The performance of the subwoofer is directly related to its

placement in the listening room and how you align the subwoofer

with its satellite speakers.The PSW310W’s wireless capability

makes it even easier to properly locate the subwoofer in your

room. Setting the volume of the subwoofer in relation to the left

and right speakers is also of critical importance because it is

essential that the subwoofer integrate smoothly with the entire

system. Setting the subwoofer’s volume level too high will result

in an overpowering, boomy bass. Setting the volume level too low

will negate the benefits of the subwoofer.

Here are several additional facts on installation that may prove

useful. It is generally believed by most audio authorities that low

frequencies (below 125Hz) are nondirectional and, therefore,

placement of a subwoofer within any listening room is not

critical. While in theory it is true that the larger wavelengths of

extremely low frequencies are basically nondirectional, the fact

is that, when installing a subwoofer within the limited confines

of a room, reflections, standing waves and absorptions generated

within the room will strongly influence the performance of any

subwoofer system.As a result, the specific location of the

subwoofer becomes important, and it is strongly recommended that

you experiment with placement before choosing a final location.

Placement will depend upon your room and the amount and

quality of bass required (for example, whether or not your room

permits placement of the subwoofer near either satellite).

Figure 1. This example shows the subwoofer positioned behind

the right-channel satellite speaker to re-create the actual

location of bass instruments in an orchestra and/or add impact

to movie soundtracks.

SUB

RIGHT-

CHANNEL

SPEAKER

PRIMARY

LISTENING

AREA

INFINITY CLASSIA PSW310W (120V)

INSTALLING SPIKED FEET

Four metal spikes are supplied for use when the subwoofer is to

be placed on a carpeted surface to decouple the subwoofer from

the floor and prevent unwanted damping.To insert the spikes, gently

lay the subwoofer on its back (not on its front or side) on a soft,

nonabrasive surface. Each spike screws into the threaded insert.

Make sure all four spikes are screwed in completely for stability.

NEVER drag the subwoofer to move it,as this will damage the spikes,

the feet, the wood cabinet itself and/or the floor. Always lift the

subwoofer and carry it to its new location.

Power

O

PSW310W

Antenna

Crossover

[Hz]

Off

Phase

Level

Frequency

Width

Level

Sub In

Wireless

Green: Sub On

Orange: Sub On and

Wireless Link Active

Red: Standby

LFE

ffOnO

Low-Pass

ID Code

AC 120V~60Hz

Rear Panel

CONTROLS AND CONNECTIONS

Power Switch

™

Line-Level Inputs

LFE Input

Power Indicator LED

∞

Low-Pass Selector

ID-Code Selector

Crossover Adjustment Control

•

Subwoofer-Level (Volume) Control

Phase Switch

‚

Wireless Antenna

Room Adaptive Bass Optimization Controls (see page 5)

R.A.B.O.S. Selector

R.A.B.O.S. Center-Frequency Adjustment

R.A.B.O.S. Bandwidth Adjustment

R.A.B.O.S. Level Adjustment

Transmitter

™

‚

⁄

•

∞

Sub In

CODE

DC18V

1234

EFG H

INFINITY CLASSIA PSW310W (120V)

Transmitter Antenna

Transmitter Power-Supply Input

Transmitter ID-Code Selector

Transmitter Sub Input

INFINITY CLASSIA PSW310W (120V)

SYSTEM CONNECTIONS

Choose either Wireless or Wired connection, then follow the appropriate instructions.

WIRELESS

If your receiver/processor does not contain a Dolby Digital

or DTS processor but has subwoofer outputs:

Line InSub In

LFE

Crossover

[Hz]

Level

Wireless

ID Code

ffOnO

Low-Pass

Green: Sub On

Orange: Sub On and

Wireless Link Active

Red: Standby

Crossover

[Hz]

Level

Line InSub In

LFE

ffOnO

Low-Pass

Wireless

ID Code

ffOnO

Low-Pass

Green: Sub On

Orange: Sub On and

Wireless Link Active

Red: Standby

Connecting the Subwoofer for Wired Applications

If you have a Dolby

Digital or DTS

receiver/processor with

a low-frequency effects (LFE) or subwoofer output:

NOTE: If your receiver/processor has only one sub out, you

may use either the L or R input.

WIRED

Connecting the Subwoofer for Wireless Applications

Step 1.

Connect a subwoofer cable from the subwoofer or LFE output of

your receiver to the Sub In

on the transmitter.

Step 2.

Plug the transmitter module into the wall outlet, and connect the

included power supply and power cord to the transmitter

. Make

sure the Transmitter Antenna

is extended upward.

Step 3.

Set the ID code on the transmitter and subwoofer

(

and

) to

the same position, as described on page 4.When connected properly,

the LED

on the rear of the subwoofer will be orange.

Step 4.

Set the Low-Pass Selector

∞

to the “Off” position.

NOTE: Some receivers have two subwoofer outputs. In that case, use

either one of the connectors.

Sub In

CODE

DC18V

1234

INFINITY CLASSIA PSW310W (120V)

Once you have a green or orange LED on the subwoofer, turn your

Subwoofer-Level Control

•

up halfway so that the knob indicator

points up.You should now be hearing bass information coming from

the subwoofer.

Adjust Level

Set the overall volume control of the preamplifier or stereo to a

comfortable level.Adjust the Subwoofer-Level Control

•

until you

obtain a pleasing blend of bass. Bass response should not overpower

the room but rather be adjusted so there is a harmonious blend across

the entire musical range. Many users have a tendency to set the

subwoofer volume too loud, adhering to the belief that a subwoofer

is there to produce lots of bass.This is not entirely true. A subwoofer

should enhance bass, extending the response of the entire system

so the bass can be felt as well as heard. However, overall balance

must be maintained or the music will not sound natural.An experienced

listener will set the volume of the subwoofer so its impact on bass

response is always there but is never obtrusive.

Phase Control

The Phase Switch

determines whether the subwoofer driver’s

piston-like action moves in and out with the main speakers, 0˚, or

opposite the main speakers, 180˚. Proper phase adjustment depends

on several variables such as room size, subwoofer placement and

listener position. Adjust the Phase Switch

to maximize bass output

at the listening position.

Crossover Adjustment

The Crossover Adjustment Control

determines the highest frequency

at which the subwoofer reproduces sounds. If your main speakers can

comfortably reproduce some low-frequency sounds, set this control

to a lower frequency setting, between 50Hz and 100Hz.This will

concentrate the subwoofer’s efforts on the ultradeep bass sounds required

by today’s films and music. If you are using smaller bookshelf speakers

that do not extend to the lower bass frequencies, set the Crossover

Adjustment Control

to a higher setting, between 120Hz and 150Hz.

NOTE: This control will have no effect if the LFE Input

£ is used

(wired connection) or if the Low-Pass Selector

∞

is in the “OFF”position

(wireless connection). If you have a Dolby Digital or DTS processor/

receiver, the low-pass frequency is set by the processor/receiver. Consult

your owner’s manual to learn how to view or change this setting.

ID Codes

In the unlikely event that you experience interference when operating

the system, or if you have more than one set of subwoofer transmitters

and receivers in operation, you may change the channel in which the

system operates. On the transmitter module and the subwoofer, there is

a four-position ID-Code Selector (

and

). Simply set the selectors

to one of the other positions.The transmitter and subwoofer (

and

)

selectors must be set to the same position for the system to function

correctly.You can also set up a maximum of two subwoofers to be

receiving from the same transmitter by setting the channel selector

on the transmitter and both of the subwoofers to the same channel.

A Word About Wireless Products

The Infinity Classia PSW310W wireless subwoofer utilizes advanced

wireless transceivers operating in the 2.4GHz frequency band.This is

the same frequency band that is used for wireless home networks and

high-quality cordless phones. It also allows for the transmission of high-

performance, full-spectrum sound to remote locations, wirelessly.

Like all wireless devices, the Infinity PSW310W wireless subwoofer’s

operating range may vary, depending upon variables such as building

construction methods and materials, atmospheric conditions and other

sources of interference. Please consult your Infinity dealer or distributor,

or visit www.infinitysystems.com, for further information or assistance.

OPERATION

Power On

Connect your signal source (such as an A/V receiver or preamplifier)

to the transmitter (if using wireless connection) or to the subwoofer

(if using wired connection).Two single-RCA cords are provided. While

you would ordinarily use the short cable to connect to the transmitter

or the long one to connect to the subwoofer, either cable can be

used, depending on proximity to the signal source.There is no need

or benefit gained from connecting the same source to both the

transmitter and the subwoofer. However, you could connect two

separate sources to this subwoofer by utilizing both its wired and

wireless connections. Both signals will essentially be mixed and

outputted by the subwoofer. Plug your transmitter’s (if using wireless

connection) and subwoofer’s AC cord into a wall outlet. Do not use the

outlets on the back of the receiver for the subwoofer.

Initially set the Subwoofer-Level Control

•

to the “Min” position.

Turn on your sub by pressing the Power Switch

on the rear panel.

Turn on your entire audio system and start a CD or movie soundtrack

at a moderate level.

Auto On/Standby

Transmitter (wireless connection only):The Power Indicator LED

(not shown) will be lit in red when the unit is in standby. When the

transmitter receives an audio signal from the source, it will immediately

turn on and the LED will turn to blinking green or solid green:

RED = STANDBY (No signal detected, transmitter off)

GREEN (BLINKING) = Transmitter is on but has not established a link

with the wireless sub.

GREEN (SOLID) = Transmitter is on and has already established a link

with the wireless sub.

The transmitter will automatically enter Standby mode after approximately

10 minutes when no signal is detected from your system.

Subwoofer: With the Power Switch

¡ in the “On” position, the Power

Indicator LED

¢ on the back panel will remain lit to indicate the

On/Standby mode of the subwoofer.

RED = STANDBY (No signal detected, amp off)

GREEN = SUB ON (Wired signal detected, amp on)

ORANGE = SUB ON (Wireless link with transmitter active)

The subwoofer will automatically enter Standby mode after

approximately 10 minutes when no signal is detected from your

system.The subwoofer will then power on instantly when a signal is

detected. During periods of normal use, the Power Switch

can be

left on.You may turn off the Power Switch

for extended periods of

nonoperation, e.g., when you are away on vacation.

Getting Started

Confirm that the Status LED on the transmitter (not shown) is on (red

or green) and the Status (Power Indicator) LED

on the subwoofer

is on (red, orange or green) and that an RCA cable is connected

from a source unit to either the LFE Input

of the subwoofer or

transmitter

or L and R inputs

™

on the subwoofer. Play a CD or

video. Use a selection that has ample bass information. If using a

wireless connection, the Status LED on the transmitter should be lit

in solid green, and the Status LED

on the subwoofer should turn

orange if connected wirelessly. If the LED on the transmitter is blinking

in green and the LED on the subwoofer is in red or green, a wireless

link has not been established between the transmitter and the

subwoofer. If connecting directly to the subwoofer without using the

wireless link, the Status LED

on the subwoofer should be lit green.

If the LED on the subwoofer remains red, check that the RCA cable from

the source to the subwoofer (wired connection) or transmitter (wireless

connection) is functioning properly (wired connection) and that it is

fully inserted at both ends, or that the Transmitter ID-Code Selector

and the Subwoofer ID-Code Selector

are set to the same channel.

INFINITY CLASSIA PSW310W (120V)

Wall-Mounting the Transmitter Module

NOTE: The customer is responsible for the correct selection and

use of mounting hardware (available through hardware stores) that

will ensure the proper and safe wall-mounting of the transmitter.

Step 1.

Insert the two M3 x 4 machine screws through the wall bracket and

into the rear of the transmitter module, as shown in the figure below.

Step 2.

Attach the transmitter module with wall bracket to the wall,

using suitable hardware and, if necessary, wall anchors.

The Infinity R.A.B.O.S.

™

technology is a simple-to-use, yet

sophisticated, low-frequency calibration system. It is designed

to work in conjunction with the Infinity Classia PSW310W

powered sub. The subwoofer contains a parametric equalizer

that you will adjust as indicated by the R.A.B.O.S. test results.

By following these instructions, you will optimize the subwoofer’s

response characteristics to complement the sub’s environment.

This will dramatically improve the sound of your system.The

optimization process takes less than 30 minutes.

The Optional R.A.B.O.S. Kit Includes

the Following Components:

• Specialized Sound-Level Meter

• Test CD

• Instructions

• Measurement Templates

• Width Selector

• Adjustment “Key”

What R.A.B.O.S.Technology Does

The Test CD provides specially designed signals you will use

while performing measurements.The sound-level meter provided

is used to “acquire” the information needed for adjustments.

You will create a response plot on the R.A.B.O.S. Measurement

Template. Using the Width Selector, you will then determine the

appropriate equalizer settings.The Adjustment “Key” is used to

adjust the parametric equalizer built into the PSW310W.After

adjustment, the test sequence is repeated to confirm your settings.

The R.A.B.O.S. Goal

It is a fact of audio that what we hear at low frequencies is

determined as much or more by the listening room than by the

loudspeaker itself. Placement of the loudspeakers and listeners

and the acoustical characteristics of the room surfaces are all

important determinants of bass quantity and quality. In most

practical situations, there is little that can be done about this,

except for patient trial-and-error repositioning of the loud-

speakers and listeners. Usually, the practical constraints

of a living space and the impracticality of massive acoustical

treatment mean that equalization is the only practical solution.

Professional sound engineers routinely employ sophisticated

measurement systems and equalizers to optimize speakers to

the installation.This has never been practical for the home

audiophile.This is why R.A.B.O.S. technology was created. It

enables you to identify the dominant low-frequency response

characteristic of your room. Once you know the problem, the

R.A.B.O.S. system provides the tools needed to optimize the

low-frequency characteristics of the speakers to the room they

are in, exactly as the professional sound engineers do it.

Performing R.A.B.O.S.Tests

These instructions assume you have already installed your subwoofer

according to the information provided in the owner’s guide. It is

also assumed that all equipment in your entertainment system is

interconnected properly and is in good operating condition.

Preparations

Before beginning R.A.B.O.S. tests, please check the following:

• Set R.A.B.O.S. System Selector

⁄

to the “On”position.

• Make sure all three R.A.B.O.S. controls

(

and

)

on the subwoofer are turned fully clockwise.

• Make sure the loudness contour (if any) on your receiver/

processor/preamp is turned off.

• Set the tone controls (Bass and Treble) to their center or

flat positions.

• Bypass all surround and effects features of your receiver/

processor/preamp or set to “Stereo Bypass.”

• If you are using a multichannel surround processor or receiver,

make sure all bass-management features are properly set.The

Audio channels should all be set to “Small”or “High-Pass” and

the subwoofer set to “On.”

You must have a CD player in the system. A CD player remote

control is quite convenient but not essential.

For best results, it is recommended that all major furnishings are in

place and that all doors and windows in the listening area are in

their normal positions.That is, if you normally listen to music with all

doors closed, then this is how they should be during this procedure.

Try to minimize ambient noise while running tests.Turn off all major

appliances and any air conditioning or furnace fans.These can

create significant subsonic noise that may be barely perceptible but

which can wreak havoc on low-frequency measurements.

Critical information is highlighted with this mark:

Helpful hints are marked with this symbol:

ROOM ADAPTIVE BASS OPTIMIZATION SYSTEM

™

INFINITY CLASSIA PSW310W (120V)

Power is switched on or off by pressing the button directly below

the bar-graph window. When the unit is on, one or more LEDs will

always be illuminated.The function of the LEDs is described in

the following section.

• Power-On/Low Signal: This is indicated by the illumination of

any LED on the bar graph. If the sound level in the room is

below the measurement range of the instrument, a green LED

near the bottom of the bar graph will be illuminated.

• Normal Measurements: When the sound level is within the

range of the RSLM, the green LED will be off and one of the

red LEDs in the bar graph will be illuminated, indicating the

relative sound level, in decibels (dB).

• Over-Range: If the sound level exceeds the range of the meter,

0dB through –5dB will all light simultaneously.

• Low Battery: When the battery voltage is too low for accurate

measurements, an LED at the bottom of the bar graph will be

illuminated. Replace the battery.

Do not attempt measurements when the Low Battery light is on.

RSLM Placement

Determine where in the room you are most likely to sit when

listening to music or watching a movie.This is where you will

want to hold the RSLM during measurements.The RSLM should

be oriented so it can be easily read and held at your seated

ear level during tests.

You must use this same position for all tests.

The RSLM can be mounted on a standard camera tripod.

This will ensure the best results.

Tracks 53–62 of the R.A.B.O.S.Test CD are test tones that can be

used for general diagnostics of your system.They are not used for

R.A.B.O.S. settings.

THE R.A.B.O.S. SOUND-LEVEL METER (RSLM)

The RSLM is a battery-operated, handheld, acoustic measurement

device specifically designed for the Infinity R.A.B.O.S. system. On the

face of the instrument is a light-emitting diode (LED) bar graph that

indicates relative sound level.There are also indicators for power-on,

out-of-range signals and a low battery.

Track Title

1 Welcome

2 Set System Test Level

3 Set Subwoofer Test Level

4 100Hz Test

5 95Hz Test

6 90Hz Test

7 85Hz Test

8 80Hz Test

9 77Hz Test

10 72Hz Test

11 66Hz Test

12 63Hz Test

13 56Hz Test

14 52Hz Test

15 49Hz Test

16 46Hz Test

17 43Hz Test

18 40Hz Test

19 38Hz Test

20 35Hz Test

21 30Hz Test

22 26Hz Test

23 24Hz Test

24 22Hz Test

25 21Hz Test

26 20Hz Test

27 Intro to Quick Retest

28 Quick Retest 100Hz

29 Quick Retest 95Hz

30 Quick Retest 90Hz

31 Quick Retest 85Hz

Track Title

32 Quick Retest 80Hz

33 Quick Retest 77Hz

34 Quick Retest 72Hz

35 Quick Retest 66Hz

36 Quick Retest 63Hz

37 Quick Retest 56Hz

38 Quick Retest 52Hz

39 Quick Retest 49Hz

40 Quick Retest 46Hz

41 Quick Retest 43Hz

42 Quick Retest 40Hz

43 Quick Retest 38Hz

44 Quick Retest 35Hz

45 Quick Retest 30Hz

46 Quick Retest 26Hz

47 Quick Retest 24Hz

48 Quick Retest 22Hz

49 Quick Retest 21Hz

50 Quick Retest 20Hz

51 Final System-Level Adjustment

52 Final Subwoofer-Level Adjustment

53 Wide Band Pink Noise, Left

54 Wide Band Pink Noise, L+R

55 Wide Band Pink Noise, Right

56 Wide Band Pink Noise, L-R

57 Wide Band Pink Noise, Uncorrelated

58 1 to 4kHz Pink Noise, Left

59 1 to 4kHz Pink Noise, L+R

60 1 to 4kHz Pink Noise, Right

61 1 to 4kHz Pink Noise, Left-R

62 1 to 4kHz Pink Noise, Uncorrelated

Figure 2. R.A.B.O.S. Sound-Level Meter

Power

-1

-2

-3

-4

-5

-6

-7

-8

-9

-10

-11

-13

-15

-18

U-R

Batt

Contents of the R.A.B.O.S. Test CD

Under-Range

Measurement

In-Range

Over-Range

Low

Battery

Figure 3. RSLM bar-graph indications

0dB

-1

-2

-3

-4

-5

-6

-7

-8

-9

-10

-12

-14

-16

Batt

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INFINITY CLASSIA PSW310W (120V)

Initial System-Level Setting

The following steps will set the playback level of the system to

the correct level for all tests that follow.

Turn the system volume to minimum.

Cue the R.A.B.O.S.Test CD to Track 2 and press Pause II.This

track will produce band-limited pink noise in both the left and

right channels.

Press Play ›. With the RSLM positioned as described above,

increase the system volume until the RSLM display indicates –10dB.

See Figure 4.

When you have completed this adjustment, press Pause II.

Setting the Subwoofer Test Level

Each of the following test tracks is about one minute

long.This is normally much longer than required. Press Pause II

or advance to the next test as soon as you are ready.

This step will set the subwoofer levels for measurement

purposes.The objective is to scale the subwoofer’s output to

make full use of the RSLM indicator range. Scaling is optimum

when a 0dB reading is observed on the highest peak without

triggering the over-range indication. Later, you will rebalance

the subwoofer to the main speakers.

The three R.A.B.O.S. controls,

and

, should be

set to fully clockwise positions, and all measurements should be

conducted with their level controls in this position. Confirm this

setting before you begin this test.The Subwoofer-Level Control

•

should be set to the mid position.

Cue Track 3 and Pause II.Track 3 continuously steps through all

subwoofer test tones for approximately one minute. Each tone will

play just long enough for the RSLM to give a stable reading.

To get accurate measurements, it is necessary to play

the subwoofer quite loud.The 0dB indication is about 94dB.At

this level, frequencies below 100Hz can cause doors, windows,

furnishings and other objects in the room to vibrate.This

frequently results in clearly audible buzzes and/or rattles that

come and go as each test tone plays. Strong buzzes not only

sound bad; they can cause measurement errors. If you hear a

buzz or rattle during this test, it is highly recommended that you

locate the source and eliminate its effects.This is actually a

valuable room-diagnostic tool.

Press Play

›

. As Track 3 plays, watch the RSLM carefully. Watch

for peak readings.The peak reading may be no more than a brief

flash. Readjust the subwoofer’s Subwoofer-Level Control

•

until

the peak level observed is 0dB without triggering the over-range

indication. See Figure 5.

When finished, press Pause II.

Performing Low-Frequency Measurements

Read the following instructions fully before beginning tests.

For the following steps, you will need a R.A.B.O.S. Measurement

Template and a pencil.

Figure 6. R.A.B.O.S. Measurement Template

Figure 4. RSLM indicating the

correct system level to

begin tests (–10dB)

Figure 5. Adjusting the subwoofer levels for a 0dB peak

0dB

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Too Low

Correct

Level

Too High



INFINITY CLASSIA PSW310W (120V)

Each of the following tracks produces a low-frequency test

tone.The range of these tests is from 100Hz down to 20Hz.The

frequency of each test is announced before it begins.The first

test is the highest frequency (100Hz); therefore, you will be

marking the template from right to left. Each frequency point is

listed across the bottom of the R.A.B.O.S. Measurement Template

(this is called the X-axis). See Figure 6 on the previous page.

The vertical scale on the left side of the template indicates

relative level, in dBs (the Y-axis).The template’s vertical scale

matches that of the RSLM bar graph.

Cue Track 4 and Pause II.

From now on, you will want to keep your CD player’s

remote control handy.

Press Play

›

. As Track 4 plays, observe the level indicated on

the RSLM.

EXAMPLE:The test frequency is 100Hz and the level indicated is

–2dB. Find the intersection of 100Hz (X-axis) and –2dB (Y-axis).

Place a dot at that point. See Figure 7.

It takes a few seconds for the RSLM reading to stabilize,

especially at very low frequencies. Don’t rush. Give each test

adequate time for the meter to stabilize.

At the bottom of the bar graph is a green “On” LED.This LED is

illuminated whenever the sound level is below the measuring

range of the RSLM. If this occurs during a test, place a dot at

the intersection of the test frequency and the bottom frame of

the template. See Figure 8.

When finished, press Skip

››

I to advance to the next test. Repeat

the process described above for Tracks 5 through 26.

When you have completed the 23 measurements, you are ready to

analyze the data and make corrective adjustments.The completed

R.A.B.O.S. Measurement Template will look something like the

example in Figure 9.

Now connect the dots as shown in Figure 10.This will make

interpretation of the data much easier.

Figure 7. Locating a test point

Figure 8. Indicating an under-range test

Figure 9. Completed R.A.B.O.S. template

Figure 10.Test example with dots connected

INFINITY CLASSIA PSW310W (120V)

At this point, you may simply enter the data you just

measured into the R.A.B.O.S. calculator, found on the

Infinity Web site at www.infinitysystems.com. After

entering the data, this R.A.B.O.S. wizard will return the correct

settings for all three R.A.B.O.S. controls:

and

. Skip

to page 14 and adjust these controls as described, and finish

the R.A.B.O.S. setup. If you would like to manually calculate the

R.A.B.O.S. settings, simply continue following the instructions

from this point.

What Does a Parametric Equalizer Do?

The R.A.B.O.S. system uses one band of parametric equalization

for response correction. Parametric equalizers are the most

versatile class of filters.The effect an equalizer will have on the

signal is dependent on three parameters.

Frequency: The equalizer will have maximum effect at one

frequency, usually described as the center frequency.

Level: This refers to the amount of cut (in dBs) for which the

equalizer is set.

Bandwidth: Defines the range of frequencies over which the

equalizer will have an effect. On the PSW310W, this adjustment

is abbreviated as “Width.”

Only parametric equalizers allow independent adjustment of all

three parameters.

These will be explained more fully in the sections that follow.

Completing the R.A.B.O.S. Measurement Template

Along the bottom of the R.A.B.O.S. Measurement Template are

three fields where you will enter the equalizer settings needed to

complete system optimization.

These instructions are based on the example in Figure 11. Use

this tutorial to become familiar with the process. Strategies for

several other test results will be presented later. After you have

completed these three entry fields, you will be ready to perform

the adjustments, completing R.A.B.O.S. optimization.

Frequency

The frequency of the R.A.B.O.S. equalizer may be adjusted to

any one of nineteen frequencies from 20Hz to 80Hz.This defines

where you are going to apply equalization.

Width

The frequency range of the R.A.B.O.S. equalizer may be set from

5% to 50% of an octave in 21 steps.This setting defines how

much of the PSW310W’s output will be equalized.

Width is expressed as a percentage of an octave. For example, a

width setting of 25% means the equalizer will affect a frequency

band of 1/4 of an octave; 1/8 of an octave above and 1/8 of an

octave below the center frequency.

The octave is a logarithmic expression. From any point

in the spectrum, one octave above or below that point is always

double or half the frequency.Therefore, one octave above 100Hz

would be 200Hz. One octave below 100Hz is 50Hz.

In the section that follows, we will discuss the use of the

Width Selector.

Figure 11. Effect of adjustable width

STOP

INFINITY CLASSIA PSW310W (120V)

Using the Width Selector

Read the following instructions carefully.The example

presented may not look like the graph you just created.

Focus on the concepts and techniques presented. Specific

cases will be discussed later.

You will use the R.A.B.O.S. Measurement Template just completed

and the Width Selector to determine the correct width setting.

The Width Selector graphically depicts a single resonant peak.

The peak looks similar to a slice of a pie. See Figure 12. At the

top of the Selector is a pull tab.When you slide the tab up and

down, the width of the pie slice becomes narrower and wider,

respectively.The pointers on the sides of the button point to the

bandwidth that corresponds to the width of the slice.

Place the Width Selector over the R.A.B.O.S. Measurement

Template, positioning the center rivet of the Selector over

the response peak, as shown in Figure 13. Be sure to align

the horizontal lines of the Width Selector with those of the

R.A.B.O.S. Measurement Template.

Apply pressure to the upper and lower left corners of the Width

Selector using the thumb and forefinger of your left hand. Now

gently slide the tab up or down until the adjustable slice most

closely fits the response data. See Figure 14.

Figure 12. Width Selector

Figure 13. Placement of the Bandwidth Selector

Figure 14. Selector adjusted for the “best fit”

Produkt Specifikationer

Mærke:	Infinity
Kategori:	Subwoofer
Model:	Classia PSW310W

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