Level calibration. Cambridge Audio azur 551R, Azur 551R V2, Azur 551R V1/V2

Speaker configuration cont.

Video In. Select

Audio In. Select

Tone/Sub Config.

Speaker Config.

Speaker Distance

Speaker Level

Speaker Xover

Auto Setup

Advanced Setup

OSD Setup azur 551R

Unit

Front L

Front R

Center

Surr. L

Surr. R

Surr. LB

Suur. RB

A "rushing" or "hissy" sound should be heard.

Meters < >

2.9 < >

2.9 < >

2.9 < >

2.0 < >

2.0 < >

2.0 < >

2.0 < >

Note: In addition to the delays as set above Dolby Pro Logic II/IIx playback also requires an extra 15 milliseconds delay to the surround channels only.

This extra delay is part of the Dolby Pro Logic II specification and ensures that sound from the surrounds arrives just after sound from the front reducing the audibility of sound leakage from the front to the surround speakers. Because the relationship between the Dolby Digital and Dolby Pro Logic IIx two delays is fixed (15mS extra to the surround channels), it is only necessary to set the delay by measuring the distances as we have described. The 551R V2 will automatically provide the appropriate extra delay whenever you switch to a

Dolby Pro Logic Mode.

Level calibration

The 551R V2 allows level calibration to match the acoustic level between different types/sizes or even manufacturers of speaker that may be being used for each channel. This is achieved by adjusting the relative level of each speaker. This can be done manually through the 'Level Calibration' menu in the OSD or automatically, see the following Auto setup section of this manual.

The basic process for manual adjustment is to listen to or measure with a

Sound Pressure Level (SPL) meter (more accurate and recommended but not essential) the level of sound produced by each speaker and set relative levels for each speaker so that they all sound the same loudness at the normal listening position. The 551R V2 incorporates a Test Signal Generator

(broad-band white noise) to facilitate this.

Press the OSD button on the remote control then select the 'Level Calibration' menu. Now turn on the test signal by highlighting this item and pressing the

◄ or ► arrows: azur 551R

Video In. Select

Audio In. Select

Tone/Sub Config.

Speaker Config.

Speaker Distance

Speaker Level

Speaker Xover

Auto Setup

Advanced Setup

OSD Setup

Back: [I/O]

Test Signal

Front L

Front R

Surr. L

Surr. R

Center

Subwoofer

Surr. LB

Surr. RB

Back: [I/O]

Off < >

0dB < >

0dB < >

0dB < >

0dB < >

0dB < >

0dB < >

0dB < >

0dB < >

You can now move up and down the channels using the ▲ and ▼ buttons on the remote. Each time a new channel is selected the test signal will be heard to move to that channel. Compare the loudness of all channels as heard at the listening position.

Pick the channel that sounds most different and select it to listen to the test signal. Now adjust the relative level in dB (using Arrow left/right on the remote) and continue comparing it to other channels until it is of equal loudness. The level can be adjusted up to + or - 10dB in 1dB steps. Repeat the process with the next most different channel. Once all channels sound the same in terms of loudness, press the OSD button again to save the settings and exit the menu.

Auto speaker setup for Distance/Level

Important note: Please remember that test signals generated from Auto setup are loud.

The 551R V2 includes our simple automatic speaker setup system called

'CAMCAS' (Cambridge Audio Mic Controlled Auto Setup). The system performs two sets of tests firstly checking which speakers are connected and whether they are wired correctly and in phase then second automatically measuring and adjusting the speaker delay timings (i.e. distance setting ) and levels.

Before activating this feature the 'Decode Mode' (i.e. type of speaker package e.g. 5.1, 7.1) of the 551R V2 and Large/Small/None status of each speaker must be set correctly as per section 1. This is important as the unit will only look for and check the speakers you have told it you have.

To perform Auto Distance/Level setup first connect the supplied microphone to the front Left front panel audio input on the front panel and place it at your normal listening position in the room.

Press the OSD button on the remote control to access the OSD and select the option 'Auto Setup'. This will access the 'Auto Setup Menu' as below. azur 551R

Please press ENTER to start auto setup.

Video In. Select

Audio In. Select

Tone/Sub Config.

Speaker Config.

Speaker Distance

Speaker Level

Speaker Xover

Auto Setup

Advanced Setup

OSD Setup

WARNING: High Volume Test Tones

Quit: [I/O] Enter: [ENTER]

Follow the on-screen instructions and press 'Enter' on the remote control when ready to start the Auto Setup function.

azur 551R

Plug the microphone into the

Mic. input on the front panel and place the microphone at normal listening position and height.

Now adjust the channels so they all sound the same (in terms of loudness only, channels of different frequency responses can sound different in terms of the "tone" of the sound i.e. more or less hissy).

14

Continue : [ENTER]

Once activated the OSD will display the message below and the word

'AUTOSETUP' will also be displayed on the front panel of the 551R V2 to confirm. azur 551R

The unit is now checking which speakers are connected and their phase

Please wait....

A series of test signals will now be output from all of the connected speaker terminals of the 551R V2 (including the Subwoofer output).