Bose FreeSpace E-4 Specifications download pdf (Page 18)

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2.0 Designing with the E4 System

2.2.3 Step 3 – Determine volume

control requirements

Decide which areas will have volume controls. Create a control

map, such as the following, showing the types of controls that

will be used, and the areas in which they will be installed.

Standard and Auto Volume interfaces are available for use with

the E4 hardware. Each offers control over source selection and

volume. The Standard interface contains a Mute button, and the

Auto Volume interface contains an Auto Volume on/off button. If

you have identified an area that uses Auto Volume, you must use

an Auto Volume interface to control this zone.

It is also possible to use 70/100V volume controls between the

amplifier output and the speaker. If you plan to use 70/100V con-

trols, be aware that they cannot be used in zones where either

Auto Volume or Dynamic EQ is used. Auto Volume and Dynamic

EQ monitor the amplifier output and make adjustments accord-

ingly. Using a 70/100V volume control would cause these func-

tions to operate improperly.

When determining the placement or physical location of the con-

trols, first think about how the control is used. If the control is

very rarely used or it requires a secure location, it should be

placed with the equipment. If the control is for an area that

requires frequent adjustments, then it is best to place the control

in the area being controlled.

2.2.4 Step 4 – Determine the speaker

requirements

Determine the speaker coverage required for the design. Con-

sider the following points as you do this:

• Each Auto Volume function requires a separate zone. Each

Auto Volume zone requires the dedicated use of one E4 output

channel.

• Each type of actively equalized speaker requires the dedicated

use of one E4 output channel. If you are designing a system

that uses actively equalized speakers, such as the 102

speaker, Model 32, Model 32SE, or Model 8, you must dedi-

cate one E4 output channel for each speaker type.

Create a speaker map, such as the following, and match the

speaker models to areas (Speaker Qty x Tap = Zone Power

required):

Auto

Volume

Interface

Auto

Volume

Interface

70/100V

Volume

Control

70/100V

Volume

Control

Area 1

●

Area 2 ●

Area 3 ●

Area 4 ●

Area 5 ●

Model

32SE

FreeSpace

3-I

Speaker

Qty Tap

Area

Power

Area 1 ●

250100

Area 2

●

5840

Area 3

●

15050

Area 4

●

3412

Area 5

●

6848

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Bose FreeSpace E-4 Specifications Page 18

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