Bedienungsanleitung Bose FreeSpace 4400 (Seite 40 von 70) (Englisch)

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6.0 FreeSpace

4400 System Setup

Programmer’s Note: If you are using the FreeSpace

4400 system to drive loudspeakers that are not Bose

products, choose the No EQ setting or one of the four

high-pass filter settings at the end of the list.

The No EQ setting helps protect the FreeSpace 4400 against loud-

speaker transformer saturation when non-Bose loudspeakers are

connected to the FreeSpace 4400 hardware. This setting acts as a

band pass filter and allows energy between 80 Hz and 16 kHz to be

sent to the amplifier section of the FreeSpace 4400 electronics.

If you change the loudspeaker EQ type, any subzones will be auto-

matically changed to the new Speaker EQ setting, and be given the

default loudspeaker tap. Depending on the quantity and tap of loud-

speakers, you could receive an error message notifying you that the

system exceeds the 400 W limitation of the FreeSpace 4400 sys-

tem. If this problem occurs, delete the subzones from the subzone

list. This will allow you to change the loudspeaker EQ type.

Subzones table – The Subzones table allows you to document

the loudspeakers used in a zone.

A zone is a group of loudspeakers that are driven by the same

amplifier output channel. A subzone is a group of loudspeakers

within a zone that use a common tap or are of a common type.

For example, you may have installed ten Model 16 loudspeakers

in a dining room and set it up as a zone to be driven by channel 1.

In this zone you may have established two subzones, one with

five Model 16 loudspeakers tapped at 8W and the other with five

tapped at 16W.

To add a subzone

Click the Add button. When the Add Subzone window appears,

enter a name for the new subzone, select the loudspeaker model

installed, enter the quantity, and select a tap setting. The Model

Name list will include only loudspeakers that are compatible with

the Speaker EQ you selected.

Click OK to add the selections to the subzone table.

To delete a subzone

In the subzones table, select the subzone to be removed and

click the Delete button.

6.3.3 Input gain

The Input Gain controls allow you to adjust functions related to

the input source signal.

Factory default settings

Programmer’s Note: Input gain controls are disabled if

the input channel is routed to a zone in which Auto Vol-

ume is enabled (on). You will only be able to change/

adjust the input gain by resetting the Auto Volume for the

affected zone.

Input gain circuit block diagram

Input Type Initial Gain Gain Range Opti-source

Mic 40 dB 80 dB Off

Line 0 dB 70 dB Off

Mic Page 40 dB 80 dB On

Line Page 0 dB 60 dB On

Source type

Gain

slider

Opti-source

input leveling

On/Off

Mic phantom

power On/Off

Signal

present

indicator

Input signal

level meter

SRC

LEVEL

* Only available for AUX MIC/LINE 3 and PAGE/MIC/LINE 4 inputs. See

“Source EQ” on page 40.

Gain

adjustment

Signal detector

Signal

level

meter

3-band

equalizer*

Opti-source

leveling

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