Special Projects Audio Aqua 20/20 Submersible Wireless - Manual (Page 3)

AQUA 250 VHF Wireless Receiver
AQUA 808 Battery Charging
Prior to the initial use of the AQUA 808, the batteries should be charged for 12 hours. The AQUA 808 contains a
protective circuit to prevent overcharging. The transmitter should be turned off during charging.
AQUA 250 Receiver Installation
For best results, the AQUA 250 receiver should be placed at
least 3 feet above the ground and at least 3 feet away from
walls or metal surfaces. This will improve reception by
minimizing RF reflections.
It is important to keep antennas away from noise sources, I.E.
electronic motors, neon or fluorescent lights, as well as large
metal objects. It is also recommended that the transmitter
be at least 3 feet away during operations.
The Channel Selector is factory pre-set to Channel 1. This
channel should not be changed unless sent to the factory for
modification.
AQUA 250 Antenna Connection
Attach the antenna(s) to each of the antenna input jacks located on the back of the receiver. Once both antennas are
secured and fully extended, position one antenna at a 45 degree angle from the other. If the antenna is difficult to move,
loosen the connector, reposition, and then retighten the connector to secure the antennas position
AQUA 250 Audio Output Connectors
There are two audio outputs on the back of the receiver, a balanced microphone level and an unbalanced line level. Connect one
end of a microphone cable to the balanced XLR output of the receiver, and connect to the other to a microphone input on your
mixer.
AQUA 808 Connection Microphone
In order for the AQUA 808 to be waterproof, the headset cable must be present and connected. The connection for the
cable to the transmitter is described above. For the plastic connectors that connect the cable to the headset, align the
white arrows on the connectors and push together.
AQUA 250 Power Supply Connection
The AQUA 250 VHF Receiver is designed to accept DC input voltage between 12-15 volts, and a current rating of 800mA.
Connect the supplied AC adapter to the DC IN input receptacle on the back of the receiver. Then plug the AC adapter into
a standard 120v 60Hz AC outlet.
AQUA 250 Gain and Volume Control
Adjust the VOLUME control until the output level is appropriate in respect to the mixer/amplifier input. Turning the
VOLUME control clockwise increases the audio output. Turning the VOLUME control counter clockwise decreases the
audio output.
The SQ Control is used to adjust the squelch. As the squelch is factory preset for optimum performance, no further
adjustment is required. If adjustments are necessary, rotate the AQ control clockwise until the illumination of the RF
Signal Level and the diversity indicator are not longer lit.
The transmitter must be off in order to correctly perform this adjustment. The audio input level of the transmitter is
preset by Special Projects to a position that is typical for most use. If you wish to increase or decrease the sensitivity of
the microphone input, please contact Special Projects.