Mackie user service Operation, SP1200 Quick Start, External Switch Settings, Program Inputs

4. Operation

SP1200 Quick Start

This isn’t a substitute for reading the entire instruction manual, which is the only way to fully understand how the SP1200 works. However, the Quick Start provides a quick overview so you can get the SP1200 set up and working right away.

Make sure the power switch is off while setting up and making connections to the SP1200.

External Switch Settings

•The Paging Mic and the Local Mic have +24 VDC PHANTOM power switches. Move the switches down to activate the phantom power if you are using condenser microphones.

•The Paging Mic and Local Mic also have GAIN +40 dB switches. Leave the switches in the down position when microphones are connected to these inputs.

•If you plan on connecting two or more SP1200s together in a system with the EXPANSION IN/OUT bus, use the LOCAL/REMOTE switches. They select either the local Program Input source (switches up) or a remote program source from the EXPANSION IN/OUT bus (switches down). The odd-numbered switches (1, 3, 5, 7) select the left inputs, and the even-numbered switches (2, 4, 6, 8) select the right inputs.

•To operate two SP1200s with one remote control, assign the same AMP ADDRESS setting to both amplifiers (DIP switches 1-5). Set the AMP ADDRESS DIP switch #6 to the Master position on one amplifier and to the Slave position on the other amplifier. The front panel and remote control panels operate both amplifiers when they are assigned to the same AMP ADDRESS. For example, if you select Program Input 1 with one unit's Input Select control, Program Input 1 is also selected for the other unit.

•For independent zone operation, assign different AMP ADDRESS settings to each amplifier. The front panel and remote control panels will operate independently for each amplifier and zone.

Internal Switch and Jumper Settings

Refer to “Internal Settings” on page 13 for more information.

•Bus Assign switches are used to assign a program input source to the balanced expansion bus. There are four switches for each program input source: Left (+), Left (–), Right (+), and Right (–).

CAUTION: When using multiple SP1200s that use the expansion bus, these switch

settings must be unique to each unit or you can damage your SP1200(s). Never assign more than one program source to the same channel on the Expansion Bus.

•EQ Bypass allows you to bypass the 3-band EQ, which is in the Input 1-4 signal path. EQ engaged is the default setting.

•The amplifier can be configured for 8-ohm, 70V (default for U.S. versions), or 100V (default for European versions) operation via eight jumpers on the amplifier board.

Program Inputs

Connect any stereo line-level signal source to the Program Inputs 1-4. If you have a music-on-hold requirement, connect a continuous music source to INPUT 1. The DIRECT OUTPUT jacks next to INPUT 1 can feed the signal connected to INPUT 1 to the telephone system.

If you have a need for a priority Program Input (e.g., a jukebox), connect it to INPUT 4. Move the AMP ADDRESS switch #7 UP to enable INPUT 4 priority.

Set the 3-band EQ controls to the “U” position for now (1K for the FREQ control). These can be adjusted later, if necessary.

PAGING MIC INPUT

Connect a microphone to the PAGING MIC input. Use either the XLR connector, or the supplied Phoenix-type connector. Set the PHANTOM and GAIN +40 dB switches to their appropriate positions. Adjust the MASTER VOLUME up/down buttons so the meter level is at the “0” mark. Set the GAIN control so the meter indication is near the “0” mark when speaking at an average level into the microphone. See “Setting The Vox Threshold” on page 19 for more information.

Set the 2-band EQ (LOW and HIGH) to the “U” position. This can be adjusted later, if necessary.

SP1200 – 16