Tips on Installing and Using the SP2400-Plan Ahead

Application Diagrams

A: Typical Stereo Application

This diagram depicts a typical setup, using the SP2400 in a stereo application. A Digital Satellite Service (DSS) is connected to Input 1, which also serves as the music-on-hold for the telephone system. A CD player and cassette deck are con- nected to Inputs 2 and 3 for general purpose music playback. A jukebox is connected to Input 4, which is configured for priority playback via AMP ADDRESS switch #7.

Both sides are assigned the same AMP ADDRESS, with the left channel assigned Master status and the right channel assigned Slave status via AMP ADDRESS switch #6. This allows the front panel buttons and both remote controls to operate both sides simultaneously.

An ambient mic is connected to each side to provide paging level compensation for varying ambient noise levels in the room. Both amplifiers have been configured for 8-ohm operation.

B: Multiple SP2400s: Multiple Zones

In this example, two SP2400s are used in a system with four separate zones configured for 70V operation (default configuration for U.S. versions). Four program sources are connected to Unit 1. Of these, only the DSS and Jukebox signals are shared with Unit 2 by means of the Expansion Bus (Inputs 1 and 4 are assigned to the Expansion Bus via the internal Bus Assign switches). Both units have sources connected to Inputs 2 and 3 that are exclusive and not shared between units. Each zone has a different AMP ADDRESS assigned, and each remote control exclusively operates its own zone.

The Paging Mic can be manually operated with the Paging Mic Control Switch, and the Paging Mic and ALL CALL control signal is transferred to Unit 2 via the Expansion bus.

Each ambient mic and local mic operates independently in their own zones.

C: Expansion with Local Mic

This example shows how to share the Local Mic/ Line input with another zone, along with the remote Expansion Bus signals.

Zone A and Zone C are assigned the same AMP ADDRESS, with Zone A assigned Master status and Zone C assigned Slave status via AMP ADDRESS switch #6. This allows the front panel buttons for both zones, and all the remote controls, to operate both zones simultaneously.

When an input is selected, it is heard in both zones because Zone A is set to LOCAL input

source, and Zone C is set to REMOTE input source over the Expansion Bus. When OFF is pressed, the Local Mic connected to Zone A is heard in both zones because the PRE OUT from Zone A is connected to the MIC/LINE input on Zone C.

Zones B and D can select their own input sources independently.

D: Room Combining—Zones

In this example, a dividing wall can be extended to divide the room into two. The Mackie Industrial DX8 is used to route independent source selections to each zone (Preset 1 on the Remote Controls), or common input source selections for both zones (Preset 2 on the Remote Controls).

For example, Preset 1 might route the CD Player and the Zone A microphone to Zone A, and the Cassette Player and the Zone B microphone to Zone B, to be used when the divider is in place between the two zones. Preset 2 might route both microphones and the audio signal from the laptop to both Zones A and B, to be used when the divider is removed between the two zones.

Both Zones on the SP2400 are assigned the same AMP ADDRESS, so when “OFF” is selected on the SP2400, the DX8 signal at the Mic/Line Input is routed to the SP2400 outputs. The local input sources (Tuner and CD 5-Disc Changer) or the Global Background Music via the Expansion I/O can be routed to the SP2400 outputs by selecting 1 (global remote), 2 (tuner), or 4 (CD) on the SP2400 front panel.