![FIGURE 1](/images/new-backgrounds/10802/108025x1.webp)
stereo signal since both
2.When internal switch S105 is set for Mono, the FP22 accepts individual left and right
TYPICAL MONITORING CONNECTIONS
1.One Mono Input. A mono signal connected to an XLR or phone jack will be monitored as a mono headphone signal. (When using the Mono XLR connectors, the Line/Mic switch should be set to match the input.)
2.One Stereo Input. A stereo signal connected to the Stereo Line jacks can be monitored as a stereo output on stereo head- phones or as a mono output.
3.One Stereo Input Plus One Mono Input. A mono signal input through the Mono XLR connector and a stereo signal input through the Stereo Line jacks can be monitored as a mixed out- put, with both signals appearing in the stereo headphones.
4.Three Mono Inputs - Stereo Headphone Signal Output. Three mono signals can be accepted through the
NOTE: The FP22 can be modified so that all input jacks are in parallel. This duplicates the Shure FP12 in functionality. This modification allows monitoring in mono only. Please contact Shure's Product Applications Group for details on this modifi- cation.
INTERCOM CAPABILITY
The FP22 can interface to commercially available intercom systems, such as RTS, Telex and ClearCom. The diagrams be- low show how to interface the FP22 to these systems and what can be monitored. More information about intercom systems can be obtained from the intercom manufacturers.
Telex Intercom Systems (Figure 1)
Telex uses a standard balanced audio line. No modification is required to interface the FP22 with Telex intercoms.
1.Use the Mono XLR Loopthrough connections.
2.Mono XLR level switch should be set to the Line position.
3.24 volts phantom power on the intercom line is passed through the FP22.
1 | 2 |
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| AUDIO (+) | +24 VDC |
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| AUDIO (±) | +24 VDC |
| REF |
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FIGURE 1
RTS and ClearCom Systems (Figure 2)
These two systems use an unbalanced audio line which re- quires use of the
1.The above Y±cable is placed
2.Set internal switch S105 to Stereo (factory setting).
Wiring for RTS and ClearCom Systems
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2 | Audio channel 1, 24Vdc | Audio, | |||
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3 | Audio channel 2, 24 Vdc | Audio, 12 Vdc call signal | |||
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1 | Reference (ground) | Reference (ground or com- | |||
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1 | 2 |
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| TO STEREO LINE |
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| LOOPTHROUGH |
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| CONNECTION ON FP22 | |
| SLEEVE | RING | TIP |
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FIGURE 2
SPECIAL APPLICATIONS
Troubleshooting stage sound systems. The FP22 can be used to trace a signal line when one or more microphones are not working on stage. To locate the malfunction, loop the signal through the FP22 wherever an XLR or phone connector is lo- cated and monitor the signal.
Field monitoring applications can be set up by inserting FP22 units ªin lineº without affecting the signals.
On stage monitoring. With the FP22, an effective on±stage
Boosting headphone output. The FP22 can be used to boost the headphone output of existing devices. The stereo headphone output of an audio device can be connected to the Stereo Line connectors of the FP22. The FP22 will provide a high±quality headphone output with the ability to loop through to another FP22.
Using the FP22 as a
Practice headphone amplifier for microphones or other sources, such as electric instruments, synthesizers, etc. Con- nect the output from any instrument into the FP22 and monitor the headphones.
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