Bogen PI35A Especificaciones descargar pdf (Pagina 12)

Speakers and Speaker Wiring

The MCP35A control panel of the SI and PI products is designed to use 25-volt distributed speakers. These speakers

have line-matching transformers with various power level taps. 8-ohm speakers or speakers without line-matching

transformers cannot be used with the SI and PI products.

Distributed speakers can be tapped at various power levels and this is determined by which wire from the speakerʼs

transformer is used for connection. The user must determine which power tap gives acceptable volume in a given

location. However, it is best to tap the speakers at the lowest acceptable power tap in order to ensure that enough

speakers can be connected to the system without overloading the system amplifier.

The chart below shows the wire colors and power taps for the T725 transformers.

Caution: Do not attempt to connect a 25V speaker directly to the MCP35A, using GND as one of the connecting

points. This could seriously damage the MCP35A because the unit uses a balanced output when connected to the

speakerʼs lines.

The MCP35A control panel of the PI and SI contains an internal amplifier with 35W power handling capability.

Therefore, the combined power of all the system speakers cannot exceed 35W. To determine the required power

that the system amplifier must handle, add up all the power taps selected for all the speakers in the system. This

is the total system power requirement. If the total of the speaker power taps is too high for the system to handle,

it may be necessary to tap the speakers at the next lowest setting in order to keep from overloading the amplifier.

In many instances, the required speaker tap setting will be either 1/4 or 1/2 watt (you should also factor in 20%

additional power loss through wires, transformers, etc. as a safety margin). The MCP35Aʼs 35-watt amplifier

should provide sufficient power for most applications.

If the systemʼs power requirements are greater than 35 watts and cannot be lowered, it may be necessary to use

an external booster amp. The booster amp replaces the internal amplifier of the MCP35A. Booster amp connec-

tions are described on page 12.

Time Tones

A tone signal sounds through all speakers when the clock terminal is grounded through a closure from a master

clock. Reference call out #6 on page 5.

T725

Leads 25V

Black COM

Brown 4

Red 2

Orange 1

Yellow 1/2

Green 1/4

Blue 1/8

Violet

Grey

White

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 23 24

Sin comentarios

Bogen PI35A Especificaciones Pagina 12