Specifications

1
Table of Contents
Distributed line principles ...................................................................................................3
Sidebar: Ohm’s Law ....................................................................................................................................... 4
Why 70 volts?................................................................................................................................................. 4
Sidebar: Transforming voltages and impedances ........................................................................................ 5
“Natural” voltages.........................................................................................................................................5
Designing the distributed sound system...........................................................................6
Loudspeaker coverage and placement .........................................................................................................6
Sidebar: Reverberation and RT
60
..................................................................................................................................................................................................
7
Sidebar: The Inverse Square Law ................................................................................................................. 8
Determining power levels .............................................................................................................................9
Calculating total power requirements .......................................................................................................11
Fitting amplifier power................................................................................................................................ 12
Using components with different line voltages .........................................................................................13
Sample applications & output configurations ...............................................................14
Other design considerations .............................................................................................16
Speaker transformer saturation .................................................................................................................16
Sidebar: Installation tip............................................................................................................................... 16
Speaker wire loss ........................................................................................................................................17
AC current consumption..............................................................................................................................19
Thermal losses (heat emissions).................................................................................................................20
System design with CX Series amplifiers ......................................................................21
Features........................................................................................................................................................ 22
The inner workings.............................................................................................................22
Exclusive CX features and accessories .........................................................................23
DataPort ....................................................................................................................................................... 23
Accessories .................................................................................................................................................. 23
IT-42 isolation transformer pack.................................................................................................................24
Crossover and filter modules ......................................................................................................................24
Front & rear panels .............................................................................................................25
Specifications ......................................................................................................................28
Address & Telephone Information ...................................................................................30