Question:  I'm connecting an IFB-104 interface to my Eclipse frame and will be using it with (4) TR-50 IFB receivers, one on each channel of the IFB-104.  The TR-50s require PL 30Vdc power, do I need to supply PL power on each individual channel of the IFB-104 via an PS-704 power supply?
Answer:  The IFB-104 can supply a "Wet" IFB signal to all four channels via the J1 or J2 3-pin XLR connectors on the rear panel of the IFB-104.  Only DC power is supplied to the IFB-104 channels via pins 1 (ground) and 2 (+30 Vdc) thus preserving the separate isolation on each audio channel of the IFB-104.  The rear panel wet/dry dip switch should be set to the "wet" position in order to pass Vdc onto the TR-50 talent receivers.  In this configuration only one channel of a PS-704 would be needed to supply power to the IFB-104 / TR-50 talent receivers.  The remaining 3 channels of the PS-704 could be used to power other Clear-Com products such as CCI-22s, RS-600 beltpacks, RM-700 series remote stations etc. 

Visit the Clear-Com web site for details of the IFB-104 unit Visit the Clear-Com web site for details of the TR-50 unit