Operating Manual

DXA-MICRO PRO

Compact XLR Adapter for DSLR Cameras and Camcorders

This operating manual explains the adapter function settings and how to use the adapter to record audio into the camera.

©Beachtek Inc. 2016

Thank You for Purchasing a BeachTek Product

Congratulations on purchasing the DXA-MICRO PRO from the makers of the world’s most popular audio adapters for DSLR cameras and camcorders. This adapter is packed with features to enable you to record professional audio directly to your camera.



Before using this high quality device, please read this guide thoroughly to obtain the highest performance.

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Please contact us if you have any problems or questions.

Description

T he BeachTek DXA-MICRO PRO is a compact two-channel, active XLR adapter with built-in preamplifiers for attaching external microphones and other audio gear to any DSLR camera or camcorder that has a built-in mic jack. Its small size makes it ideal for today’s compact cameras.

The DXA-MICRO PRO uses exceptionally low noise, wide bandwidth preamplifiers for superb audio. This allows you to record high quality audio directly to the camera which will always be in sync with the video.

Direct audio recording eliminates the need to have a separate audio recording device and syncing the audio in post editing.

The DXA-MICRO PRO is very easy to set up and use. It allows you to connect virtually any two microphones at the same time including camera mounted mics such as the popular Rode VideoMics, wireless systems, and professional hand held and condenser boom microphones.

The XLR input provides 48 volt phantom power and the unbalanced mini-jack inputs provide 3.5 volt plug-in power.

Good/Over level indicators make it easy to verify the proper signal levels at a glance, while the level controls allow you to adjust the output signal for optimum recording. The phone jack lets you monitor the audio from the adapter during recording, or camera during playback.

The adapter mounts securely to the tripod attachment on bottom of the camera or to the hot shoe above the camera.

Warnings

Ensure that the VOLUME control is set low to avoid excessively loud audio from damaging your hearing.

Always do a test recording and play back the audio to ensure it is acceptable.

DO NOT activate phantom power for dynamic microphones, condenser microphones that do not operate on phantom power, wireless receivers, mixing boards or any unbalanced device as it may cause damage to both the adapter and connecting device.

Turn off power to adapter before plugging or unplugging any microphones or equipment to or from the adapter.

Contents

Supplied Accessories…………………………………………………... 1

Quick Setup Guide…………………………………………………....... 2

Adapter Controls and Connectors…………………………………….. 3

Setup Guide……………………………………………………………... 6

Basic Operation……………………………………………………........ 8

Playback Monitoring……………………………………………………. 10

Advanced Operation……………………………………………………. 11

Features………………………………………………………………….. 12

Specifications……………………………………………………………. 13

Warranty Information…………………………………………………… 14

Supplied Accessories



Two 3.5mm to 3.5mm SC35 cables

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Brass mounting foot with knurled wheel and attachment bolt

 Allen key

1

Quick Setup Guide

1) Ensure the POWER switch is set to OFF before you begin.

2) Install a fresh alkaline or lithium battery in the adapter.

3) Mount the DXA-MICRO PRO adapter to the camera.

4) Connect the supplied SC35 cable from the OUT jack on the adapter to the MIC input jack on the camera.

5) Connect your microphones to the adapter inputs.

6) Set the GAIN switches to HI.

7) Set the MONITOR switch to REC.

8) Set the PHANTOM switch as follows: a) OFF if phantom power is not required on the XLR input channel b) ON if the mic on the XLR input channel requires 48 volt phantom power

9) Set the M/S switch to M for mono when using one channel or to S for stereo when using two channels.

10) Turn the adapter PWR switch on. The power LED should indicate green.

11) Adjust the LEFT and RIGHT level controls for each channel so the level indicators flash green when capturing audio.

12) Plug your headphones into the PHONE jack on the adapter and adjust the VOLUME control to a comfortable level. Ensure that you hear audio on both channels from the connected microphones.

13) See Advanced Operation on how to setup the camera gain.

14) Do a test recording and playback on the camera to ensure that the captured audio is satisfactory.

2

Adapter Connectors and Controls

Front Panel

1

POWER Switch

Main power switch for adapter

2

3

POWER LED

Green indicates power on and good battery condition

Red indicates low battery voltage

MONITOR Switch

REC selects headphone monitoring from either the microphones during recording, or PLAY for playback audio from the camera

4

5

6

7

8

PHONE

Headphone jack to monitor the audio from microphones or camera

MONITOR IN

Input jack for connecting the loopback audio from the camera

Vol Control

Adjusts the headphone volume level

OUTPUT Switch

Selects mono or stereo output mode

PHANTOM Switch

Activates 48 volt phantom power for condenser microphones that require phantom power to operate

3

9

10

11

LEFT and RIGHT Controls

Individual adjustment controls to adjust output levels on each channel

Level Indicator LEDs

Green indicates normal input levels, Red indicates overload

Gain Switch

Selects LO for +15dB or HI for +30dB gain

11

Front Control Panel

7 8

3

2

6

2

9 10

1

2

5

4

4

Side XLR Panel

12

XLR Input

Balanced XLR input to attach professional microphones or wireless systems. This sends the signal to the Right channel

Side Mini-Jack Panel

13

14

OUT

Stereo output jack for connection to the camera

L

Left unbalanced 3.5mm mic input. Provides 3.5 volt plug-in power

15

16

R

Right unbalanced 3.5mm mic input. Provides 3.5 volt plug-in power

S

Stereo unbalanced 3.5mm mic input. Provides 3.5 volt plug-in power

Side XLR Panel

12

14

15

16

13

Side Mini-Jack Panel

5

Setup Guide

Battery Installation

1) The DXA-MICRO PRO operates on one 9 volt battery. We recommend that you use either an alkaline or lithium type battery for the longest operating time.

2) To install the battery unlatch the drawer by pushing in and over on the drawer front, releasing and sliding the drawer out. Insert the battery with the “+” positive terminal lined up with the “+” indicator on the battery compartment. Slide the battery drawer closed until it clicks into place.

Mounting and Connecting the Adapter to the Camera

1) Ensure that the camera and adapter are both switched off.

2) To mount the adapter under the camera, line up the mounting bolt on top of the adapter to the tripod hole on the underside of the camera. Carefully turn the adapter mounting knob on the front panel to the right to screw the adapter squarely into the camera.

Snug the adapter to the camera, but do not over tighten. Remove the brass mounting foot to attach the adapter to a tripod.

3) To mount the adapter over the camera, attach the brass mounting foot to the adapter with the supplied Allen key, then slide on to the hot shoe of the camera.

4) Connect one end of the supplied SC35 output cable to the OUT of the adapter and the other end to the MIC on the camera.

6

Initial Setup

1) Connect your microphones or other audio gear to the adapter.

2) Set the PHANTOM switch to OFF if phantom power is not needed.

Set to 48V only for condenser microphones that require phantom power to operate.

3) Set the MONITOR Switch to REC to monitor the audio from the microphones during recording.

4) Set the GAIN switch to HI. This is the normal setting for most microphones. If you are using very sensitive condenser type microphones, or recording very loud sounds, you may have to set the GAIN switch to LO to prevent distortion.

5) Set the M/S switch to M for mono when using one microphone. Set the unused channel level control fully counter-clockwise to disable it to prevent noise. When using two microphones, you should normally set the switch to S for stereo to keep each channel separated.

6) Set the LEFT and RIGHT level controls fully counter-clockwise.

7) Plug your headphones into the PHONE jack to monitor the audio.

Ensure that the VOLUME control is set low to avoid excessively loud audio from damaging your hearing.

7

Basic Operation

After following the above Initial Setup, you should be ready to start recording.

1) Turn the adapter POWER switch ON. The power LED should light green indicating good battery voltage. Red indicates low battery warning.

2) Adjust the LEFT and RIGHT level controls until the level indicators flash green while capturing audio. Continue increasing the levels until the indicators just start flashing red. This will provide a good signal level to the camera and still offer plenty of headroom for higher transient signals. If the level indicator stays red, reduce the signal level until it only intermittently flashes red.

See “How to Setup Audio Bracketing” under

Advanced

Operations for a handy pro tip when using a single mic.

3) Adjust the VOLUME control for the headphones to a comfortable listening level.

4) Turn on the camera and do a test recording and then play back the audio from the camera to determine if the captured audio is acceptable. Set the MONITOR switch to PLAY to hear the playback audio from the camera.

5) The Auto Gain Control (AGC) in the camera will vary the amount of gain depending upon the input signal level. During quiet moments, the AGC will increase the gain, which will also increase the amount of hiss from the camera preamplifiers. See “Using Cameras that have Manual Audio Controls” under Advanced Operations to reduce this problem.

8

Notes on Getting the Best Audio Performance

The most common problem in recording professional audio on today’s

DSLR cameras is the hiss generated by the camera preamplifiers. You will never completely eliminate all hiss, which is normal, but you can reduce it so that it is no longer a problem.

The most important thing to remember when recording audio is to set the audio levels correctly as explained in this manual.

Setting the levels too low will give you a poor signal-to-noise ratio and lead to poor results. Also, setting the levels too high will cause clipping and distortion. Having the proper levels will ensure that good clean audio signals are being sent to the camera for the highest quality audio.

You should use a quality professional microphone, and proper mic placement and techniques for optimum results.

9

Playback Monitoring

To monitor audio from the camera during playback you will need to use the second SC35 cable that came with the adapter. Connect this cable between the phone out on the camera (if it has this feature) and the

MONITOR IN on the adapter. Set the MONITOR switch to PLAY.

Alternatively, you can also connect the AV Output form the camera using the appropriate AV cables and adapters.

You can now play back the clip and hear the audio through your headphones connected to PHONE output on the adapter.

Note that the playback audio may appear to have an excessive amount of hiss. This is normal since the signal is passing through the relatively noisy analog circuitry of the camera and headphone amplifier. This is not representative of the actual recorded digital file.

10

Advanced Operation

Using Cameras that have Manual Audio Controls

If your camera allows you to disable the AGC feature we recommend that you do so to get the best performance. Set the camera to manual mode and the camera gain as follows:

Canon DSLR cameras 1 click above off

Nikon DSLR cameras

(With gain settings 0 to 20) Set to 5

(With gain settings LO,MED,HI) Set to LO

Panasonic DSLR cameras Set to -12dB

Other DSLR’s and camcorders Set the gain to between the lowest setting and about 25% of maximum. You will have to do some test recordings to find the optimum setting and to calibrate the VU meter to the camera.

This setup will keep the gain in the camera low for the best performance.

How to Setup Audio Bracketing

Audio Bracketing is a simply a technique of setting a secondary channel at a lower level to use as a backup in case the primary channel gets blown out from an overly hot signal. This can be used anytime a single mono mic is being used with the adapter. It is very easy to do:

1) Plug the mic into any input which will be the primary channel.

2) Set the OUTPUT switch to M for MONO.

3) Adjust the primary channel level as usual.

4) Adjust the other secondary channel at a somewhat lower level between 10 and 20dB.

11

Features

Inputs

 One balanced XLR connector

 Two unbalanced 3.5mm jacks with plug-in power

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One stereo unbalanced 3.5mm jack with plug-in power

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MONITOR IN for playback monitoring

Output

 Unbalanced stereo mini-jack for connection to the camera

Headphone Monitor



Built-in headphone amplifier with volume control



3.5mm phone jack

Phantom Power

 Switchable 48V phantom power for the XLR input

Level Indicators



Good/Over level indicators

Gain Switch

 Two gain settings to match any microphone

Level Controls



Adjusts output level on each channel

Low Noise Preamplifiers



Exceptionally low-noise circuitry for superb audio

 Wide-bandwidth for full rich sound

Playback Monitor

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Provides an easy way to monitor audio on playback

Power



Easily replaceable 9 volt battery

 Low battery indicator

Case



Sturdy extruded aluminum enclosure

12

Specifications

Maximum Input Levels

Output Level

Frequency Response

THD+N

S/N Ratio

Gain

Phantom Power

Plug-in Power

Battery Type

Battery Duration

Dimensions

Weight

LO gain -14dBu

HI gain -29dBu

-26dBu when level indicators change to red

20Hz to 20kHz (+/- 0.5dB)

Less than 0.03% @ 1kHz, -30dBu input

85dB @ 1Khz, -30dBu input

LO +15dB

HI +30dB

Regulated 48 volt power

Current to 14mA (direct short)

3.5 volts on all mini-jack mic inputs

One 9 volt alkaline or lithium battery

3 hours typical with alkaline battery (no phantom)

8 hours typical with lithium battery (no phantom)

4” x 3” x 1.5” (L x W x H)

(102 mm x 76 mm x 38 mm)

12 oz. (0.3 kg)

This device complies with the FCC Rules, Part 15, Class B

13

Warranty Information

Limited Two Year Warranty

This warranty covers any defects or malfunction in your new BeachTek adapter for two years from date of purchase.

BeachTek will replace or repair any defective or malfunctioning adapter, within the warranty period, at no charge. The warranty does not cover damage resulting from accident, alteration, misuse or abuse. The device must be sent to our service center at your expense.

Should you require service please contact us first before returning the unit to us. Return instructions can be found on our website at www.beachtek.com

on the Support page.

Upon receiving the returned adapter it will be inspected and replaced or repaired if found defective. The unit will be shipped back to you within five business days at our expense.

14

Contact Information

Address

Beachtek Inc.

480 Osprey Avenue

Kelowna, British Columbia

Canada V1Y 5A5

Phone

778-478-9872

Email

[email protected]

Website

www.beachtek.com