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6

CASCADE MODEL FIFTEEN

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/Under-Range (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.
• Measurement In-Range (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 this 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 Infinity R.A.B.O.S. 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

Power-On/

Under-Range

Measurement

In-Range

Over-Range

Low 

Battery

Figure 3. RSLM bar-graph indications

Cascade 15 OM   9/14/05  2:35 PM  Page 9

Summary of Contents for Cascade 3C

Page 1: ...Compact Powered Subwoofer CASCADE MODEL FIFTEEN Owner s Guide 120V CASCADE ...

Page 2: ...rting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode See Figure A 18 An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits or where it can fall into such powe...

Page 3: ... 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 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 Measur...

Page 4: ...kers 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 installation facts that may prove useful It is generally believed by most audio authorit...

Page 5: ...utputs Power Indicator Subwoofer Level Volume Control Crossover Adjustment Phase Switch Normal LFE Selector Power Switch Bass Optimization Controls see page 5 ª R A B O S Selector Center Frequency Adjustment Bass Optimization System Level Adjustment B Bass Optimization System Bandwidth Adjustment ...

Page 6: ...fers Simply connect the first subwoofer as described above and then run a subwoofer cable from the line output s to the line input s on the next sub NOTE This line output is before the R A B O S circuit Each sub woofer s R A B O S controls must be individually adjusted during the R A B O S setup SUBWOOFER OR LFE OUTPUT If your receiver processor has subwoofer outputs for the left and right channel...

Page 7: ...d 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 is there to enhance bass extending the response of the entire system so the bass can be felt as well as heard Howe...

Page 8: ...s to optimize speakers to the installation This has never been practical for the home audiophile This is why R A B O S was created R A B O S enables you to identify the dominant low frequency response characteristic of your room Once you know the problem R A B O S provides the tools needed to optimize the low frequency characteristics of the speakers to the room they are in exactly as the professi...

Page 9: ...UND LEVEL METER RSLM The RSLM is a battery operated handheld acoustic measurement device specifically designed for Infinity R A B O S 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 T...

Page 10: ...begin this test The 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 ...

Page 11: ...Hz 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 d...

Page 12: ...ions that follow Completing the MeasurementTemplate Along the bottom of the 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 t...

Page 13: ...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 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 Meas...

Page 14: ... the best method in all cases The next section contains several other examples What You Measure What to Do As stated earlier it is not possible to anticipate the effect of every possible listening environment However most residential sound rooms share many characteristics and their dimensions fall into a range that make some response irregularities far more likely than others On the following page...

Page 15: ...lculation will indicate a 8dB setting However this peak does not reach the 0dB level as the lower peak does Therefore a 8dB setting would be excessive The 52Hz peak stops at 2dB Subtracting 2 from 8 yields the correct setting 6dB Enter 6 in the Level field Skip to the Adjusting the R A B O S Equalizer section on page 14 Example 3 Peak Adjacent to a Dip Response dips can occur at any frequency some...

Page 16: ...data to the examples given in this section of the manual Follow the instructions for the example that most closely matches your new measurement Example 4 Narrow Response Although it looks as though this system is quite bass deficient this is actually indicative of a single very narrow peak in excess of 10dB high Apply the Width Selector as described earlier Align the center line of the Selector ov...

Page 17: ...l finished Connect the dots Your second measurement will no longer exhibit the deep response dips However the peak will still be evident Without the influence of the response dips the amplitude and center of the peak may have changed 4 Interpret the new data Compare your new data to the examples given in this section of the manual Follow the instructions for the example that most closely matches y...

Page 18: ...nly a few seconds and there is no frequency announcement If you are uncomfortable operating at this pace you may of course perform measure ments with the original test tracks Your first interpretation of the data and choice of settings may not be optimum You can repeat the test adjust test cycle as often as needed to get the desired results To do this return to Setting the Subwoofer Test Level on ...

Page 19: ...d clean If a problem exists in one loudspeaker reverse the connection wires to the left and right system If the problem remains in the same speaker then the fault is with the loud speaker If the problem appears in the opposite speaker the cause is in another component or cable In the event that your subwoofer ever needs service contact your local Infinity dealer or distributor or visit www infinit...

Page 20: ...17 CASCADE MODEL FIFTEEN Frequency Width Frequency Width Hz dB Hz dB ...

Page 21: ...18 CASCADE MODEL FIFTEEN Frequency Width Frequency Width Hz dB Hz dB ...

Page 22: ...ave continuously variable Normal LFE switch set to Normal Drivers Four 6 x 6 152mm x 152mm Dimensions H x W x D 13 x 37 x 8 1 2 330mm x 940mm x 216mm Weight 98 lb 44 5kg 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 S...

Page 23: ...NOTES ...

Page 24: ...ional are registered trademarks and Cascade Room Adaptive Bass Optimization System and R A B O S are trademarks of Harman International Industries Incorporated Dolby is a registered trademark of Dolby Laboratories DTS is a registered trademark of DTS Inc Part No 819001082002 2005 Harman International Industries Incorporated All rights reserved ...

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