System Features:

1: Antennas (A and B) - The antenna mountings allow full rotation for optimum placement. In normal operation, both Antenna A (the antenna on the left) and Antenna B (the antenna on the right) should be placed in a vertical position.

2: Volume control - This knob sets the level of the audio signal being output through both the balanced and unbalanced output jacks on the rear panel. Reference level is obtained when the knob is turned fully clockwise.

3: Audio Meter - This “ladder” display (similar to the VU bar meter used on audio devices) indicates the strength of the incoming audio signal. When the “0” segment is lit, the incoming signal is optimized at unity gain; when the “+6” segment is lit, the signal is overloading. When only the left-most “-20” segment is lit, the incoming signal is at just 10% of optimum strength. If no segments are lit, little or no signal is being received.

4: Squelch control - This control determines the maximum range of the SR5 before audio signal dropout. Although it can be adjusted using the supplied plastic screwdriver, it should normally be left at its factory setting

5: ANT A/B LEDs - When signal is being received, one of these will be lit yellow, showing you whether the (left) “A” or (right) “B” antenna is currently being used. The SR55 constantly scans its two antennas and automatically selects whichever is receiving the strongest, clearest signal.

6: RF Meter - This “ladder” display (similar to the VU bar meter used on audio devices) indicates  the strength of the incoming radio signal

7: Power switch - Use this to turn the SR55 power on and off

1: DC input - Connect the supplied 12 volt, 250 mA power adapter here, WARNING: The substitution of any other kind of power adapter can cause severe damage to the SR55 and will void your warranty.

2: Balanced output* - Use this electronically balanced low impedance (600 Ohm) XLR jack when  connecting the SR55 to professional (+4) audio equipment. Pin wiring is as follows: Pin 1 ground  (shield), Pin 2 high (hot), and Pin 3 low (cold).

3: Audio Output Level switch - Sets the audio output level attenuation of the balanced output to -20 dBm (line level) or -40 dBm (mic level).

4: Unbalanced output* - Use this unbalanced high impedance (5K Ohm) 1/4" jack when connecting the SR5 to consumer (-10) audio equipment. Wiring is as follows: tip hot, sleeve ground.(* If required, both the unbalanced and balanced outputs can be used simultaneously)

ST5 Bodypack Transmitter:

1.) Input Connector : The input device is connected here. The ST5 is supplied with either a lavalier,headset microphone or heavy-duty instrument cable terminating with a 1/4" plug which are all connected to the transmitter via a locking 3.5mm mini-phone jack.

2.) Battery Level Meter : This set of three multiclor LEDs indicates relative battery power,indicating whether the installed battery is at low (red) ,mid (yellow) ,or high (green) strength.

3: Audio on-off switch - When set to the “on” position, audio signal is transmitted. When set to the “off” position, the audio signal is muted.

4: Battery door release - Press gently inward on these two indents in order to open the battery door of the ST5L or ST5 and access the Power on-off switch

5: Power on-off switch* - Use this to turn the ST5 on or off (to conserve battery power, be sure to leave it off when not in use).

6: Attenuation switch - The ST5 transmitter features a signal Attenuation switch that is used to select the input level of “0dB” or “-15dB”.

7: Gain control (trimpot) - This input gain control has been factory preset to a nominal level so we recommend that this be adjusted only if your signal is too high, or too low.

8: Battery holder - Insert a standard 9-volt alkaline battery here, being sure to observe the plus and minus polarity markings shown.

9: Plastic screwdriver - Specially designed for use in adjusting the ST5 Gain control and/or receiver Squelch control.

* Be sure to mute the audio signal at your external mixer or amplifier before turning transmitter power on or off, or an audible pop may result.