BeachTek Phantom Adapter DXA-6A Merkblatt

 

   As a guide, the recording levels should be no higher than -12 dBFS 

(Full Scale). Please refer to your camcorder’s user manual for more 

information on setting the proper recording levels.
4. MONO / STEREO Switch

   The MONO setting mixes both channels together and sends the 

audio to both the right and left channels which is ideal when only one 

microphone is being used. Stereo keeps both channels separated 

when two microphones are connected to the  adapter for two discreet 

audio channels. When in MONO mode, be sure to keep the trim 

control on the unused channel fully clockwise to reduce the loading 

effect on the working channel.
5. XLR Inputs

   The two XLR inputs can accept balanced or unbalanced 

connections. To convert the input to unbalanced, simply ground 

pin 1 to 3 on the XLR input cable. We recommend the use of 

sensitive condenser type microphones for the best results. 

Dynamic microphones usually do not have sufficient output levels 

and may result in an excessive amount of hiss from the high level 

of amplification necessary by the camera’s audio preamplifiers. 

Microphones with a sensitivity rating of greater than -40 dBV are  

ideal.
6. Output Cable

   The attached shielded cable terminates in a gold plated, stereo 

mini plug connector. Plug this into the microphone jack on your 

camcorder
Bottom Dip Switches
7. MIC / LINE Switches

   To connect a microphone to either channel of the DXA-6A, set the 

corresponding dip switch (SW1 for right and SW3 for left) to MIC. 

This is the default factory setting. To connect a line level output from 

a mixer to the DXA-6A, set the corresponding dip switch to LINE to 

activate a 40 dB pad. This attenuates the signal to the proper level so 

that it will not overdrive the input of your camcorder.
8. Ground Lift Switch

   To eliminate any noises caused by ground loops, you may have 

to adjust the setting of the ground switch. Set SW2 dip switch on 

the DXA-6A to either the G1 or G2 setting depending upon which 

position that gives you the least amount of noise. This switch allows 

the input and output grounds to be isolated to prevent ground noise. 

The factory preset is G1.

 

   Mount the DXA-6A securely to the tripod bushing on the under 

side of your camcorder. Connect the cable from the DXA-6A to the 

camcorder’s microphone jack and set the input mode of the camera 

to “MIC”. The camcorder’s onboard microphone should now be 

disabled. You are now ready to attach external audio devices to the 

adapter. 
Adapter Controls and Connectors
1. Power

   Install a fresh 9 volt alkaline battery in the adapter if you wish to use 

phantom power (battery is not required to pass the audio signal). Turn 

on the unit to activate the phantom power supplies. The Power LED 

should light to indicate good battery power. Turn off the power when 

not in use to conserve battery power
2. Phantom Power

   If your condenser microphone requires 48 volts phantom power 

to operate, first connect the microphone to the adapter. Activate the 

PWR ON switch and then the PH ON switch for the channel it is 

connected to. The LED beside the corresponding channel trim control 

should light to indicate that 48 volt power is present. Do not plug  

dynamic microphones, unbalanced devices, wireless receivers or 

feeds from mixing boards into the adapter with the phantom power 

activated as it may damage the connecting device.
3. Trim Controls

   You can use the automatic gain control (AGC) in the camera to 

adjust the optimum audio levels for recording. The DXA-6A trim 

controls should normally be set as high as possible to achieve the 

maximum signal to noise ratio. If necessary, adjust either the left 

or right trim control to balance both inputs so they are of equal 

amplitude. You may have to use the trim controls to reduce the 

signal strength to avoid distortion if you are using very sensitive 

microphones or recording very loud sounds. You should monitor the 

audio with headphones connected to the camera to ensure good 

quality audio. 

 You can also switch the AGC off for manual control over the audio 

levels. Initially set the camera gain to about 30 to 50% of maximum. 

If necessary, adjust either the left or right trim control to balance 

both inputs so they are of equal amplitude. Then set the desired 

recording level with the manual level control on the camcorder. As 

above, you may have to adjust the trim controls when using sensitive 

microphones or recording very loud sounds.