Source EQ, Setup | Bose E4 manual

6.0 E4 System Setup

To set up paging in a zone

In order to use paging in a zone, first you must assign the PAGE source to the zone. Then select the appropriate settings in the Page Setup (page 50) control pane.

6.3.5 Source EQ

An input source EQ control panel is available for inputs 3 and 4. This three-band equalizer is used primarily to compensate for microphone response or for handling noise.

Click and drag each slider to the level you want. The scale on the left side of the panel is expressed in dB.

Factory default settings

Low	Mid	Hi

0 dB	0 dB	0 dB

Source EQ operation

The center frequency and shape of each EQ band is fixed and can be adjusted by ±6 dB.

•The low-frequency EQ (LF-EQ) is a low-pass shelf EQ with a corner frequency of 125 Hz and a roll-off of 6 dB per octave.

•The mid-frequency EQ (MF-EQ) has a center frequency of 1.6 kHz and a Q of 1.

•The high-frequency EQ (HF-EQ) is a high-pass shelf EQ with a corner frequency of 8 kHz and a roll-off of 6 dB per octave below this point.

LF-EQ

∑

MF-EQ

HF-EQ

6.3.6 Page setup

The Page Setup control panel is used to set up the MIC/PAGE/ LINE 4 input for paging. The page setup is available when “Mic/ Page” or “Line/Page” is selected for “Type” in the Input Gain con- trol panel.

Paging	Detection	Active page	Ducking
type	type	indicator	parameters

Page	Opti-voice®	Page	Page hold
Control	On/Off	threshold	time
		slider

Fixed-zone paging default settings

Paging Type	Detection	Opti-voice®

Fixed-zone	PTT	On

Page setup with Opti-voice on (default)

Since the Opti-voice paging system implements predetermined settings for ducking depth and release time and source EQ, this is the most efficient setup method. After the Opti-voice paging system is turned on, the rest of the setup depends on the chosen detection method.

1.Set Opti-voiceto On in the Page Setup control panel.

2.Select a detection method. If you select PTT, there is no fur- ther setup required. If you select Auto, continue.

3.Ask another person to talk into the paging microphone at the lowest volume that will normally be used.

4.Lower the Page Threshold slider to the level where the page active light is constantly on.

5.Check your page threshold setting to make sure that no environmental noise, such as a music source or background noise, triggers the page.

If you hear the music source continually ramping up and down, the environmental noise is triggering a page. If this occurs, try one of the following:

•Increase the page threshold level.

•Lower the taps on the speakers near the page mic.

•Change the page mic location.

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E4 specifications

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Bose E4 manual Source EQ, Setup

Models: E4