Audio Technica M3TL Users manual

UHF Stereo Receiver

UHF Stereo Transmitter with detachable

Dynamic Earphones

antenna and AC adapter

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Wireless In-Ear Monitor System

0168 !

Set-up and Operation Pages 2-17

Installation et utilisation Pages 18-33

Configuración y funcionamiento Páginas 34-49 Configuração e operação Páginas 50-65 Impostazioni e Utilizzo Pagine 66-81 Einrichtung und Betrieb Seiten 82-97 Opstelling en gebruik Pagina 98-113

w i r e l e s s w i r e l e s s w i r e l e s s w i r e l e s s w i r e l e s s

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WARNING!

USE AS LOW A VOLUME AS POSSIBLE. PERMANENT HEARING DAMAGE CAN RESULT FROM USING THIS SYSTEM AT EXCESSIVE VOLUMES.

For safe operation of this in-ear monitor system, do not listen at excessive sound pressure levels.

Most national safety and health administrations have established guidelines for maximum time being exposed to sound pressure levels before hearing damage occurs.

85 dB(A) SPL at 8 hours

88 dB(A) SPL at 4 hours

91 dB(A) SPL at 2 hours

94 dB(A) SPL at 1 hour

97 dB(A) SPL at 30 minutes

100 dB(A) SPL at 15 minutes

120 dB(A) SPL — avoid or hearing damage may occur

In live settings it is difficult to make exact measurements of Sound Pressure Levels (SPL) present at the eardrum, which is affected not only by the In-Ear Monitor volume, but by ambient sound on the stage and other factors.

To protect your ears from hearing damage:

•Use the in-ear monitor system at the lowest volume possible; turn up the volume only enough to hear

•Be aware that ringing in your ears may indicate that the volume is set too high.

•Have your ears examined regularly by an audiologist.

•If wax builds up in your ears, stop using the in-ear monitor system until you have seen an audiologist.

•To avoid infections, use an antiseptic to wipe the earphones before and after using the system.

•Stop using the earphones if you experience ear discomfort or infection.

This device complies with the European R&TTE directive 1999/05/EC. Operation is subject to the condition that this device does not cause harmful interference. For Licensing information, please contact your local dealer or radio authority.

This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference.

This device complies with INDUSTRY CANADA R.S.S. 210, en conformité avec IC: RSS-210/CNR210.

Operation is subject to the following conditions: 1) This device may not cause harmful interference and 2) this device must accept any interference received, including interference which may cause undesired operation. Changes or modifications not expressly approved by Audio-Technica could void your authority to operate this equipment.

Notice to individuals with implanted cardiac pacemakers or AICD devices: Any source of RF (radio frequency) energy may interfere with normal functioning of the implanted device. All wireless microphones have low-power transmitters (less than 0.05 watts output) which are unlikely to cause difficulty, especially if they are at least a few inches away. However, since a “body-pack” mic transmitter typically is placed against the body, we suggest attaching it at the belt, rather than in a shirt pocket where it may be immediately adjacent to the medical device. Note also that any medicaldevice disruption will cease when the RF transmitting source is turned off. Please contact your physician or medical-device provider if you have any questions, or experience any problems with the use of this or any other RF equipment.

CAUTION! The circuits inside the receiver and transmitter have been precisely adjusted for optimum performance and compliance with federal regulations. Do not attempt to open the receiver or transmitter. To do so will void the warranty, and may cause improper operation.

Warning: To prevent fire or shock hazard, do not expose this appliance to rain or moisture.

•To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only.

•Do not expose this apparatus to drips and splashes.

•Do not place any objects filled with liquids such as vases on the apparatus.

•Do not install this apparatus in a confined space such as a bookcase or similar unit.

•The apparatus should be located close enough to the AC outlet so that you can easily grasp the AC adapter at anytime.

Dispose of batteries in an environmentally responsible manner according to the local laws and regulations of your region. Some batteries may be recycled, and may be accepted for disposal at your local recycling center. If you are not able to identify the applicable rules in your area, please check the instructions of the battery manufacturer.

Do not dispose of batteries in a fire or trash incinerator, or leave batteries in hot places such as an automobile under direct sunlight. Do not store batteries near an oven, stove, or other heat source.

About RF Interference

Please note that wireless frequencies are shared with other radio services. According to Federal Communications Commission regulations, “Wireless microphone operations are unprotected from interference from other licensed operations in the band. If any interference is received by any Government or non-Government operation, the wireless microphone must cease operation...” If you need help with operation or frequency selection, please contact your local dealer or Audio-Technica. Extensive wireless information also is available at www.audio-technica.com.

Warning—Use as low volume levels as possible.

To prevent damage to your eardrums, never use this system at excessive volume levels. Listening to loud sounds for an extended period may cause temporary or permanent hearing damage.

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M3 System Components

Quick-start guide

1. Plug in the included AC adapter and connect to transmitter’s DC input. 6. Connect audio source(s) to inputs on the rear panel of the transmitter.

2. Insert 2 AA batteries in the M3R Stereo Receiver following polarity as indicated.

3.Power on M3R Stereo Receiver with volume in minimum position; power on M3T Stereo Transmitter.

4.Set M3R Stereo Receiver and M3T Stereo Transmitter to the same frequency. (See page 11.)

5.Power off receiver and transmitter.

7.Power on M3T Stereo Transmitter.

8.Adjust attenuator on rear panel of M3T Stereo Transmitter to appropriate level. (See page 5.)

9.Adjust trim level of M3T Stereo Transmitter, if needed. (See page 12.)

10.Plug supplied Dynamic Earphones into earphones locking output jack on M3R Stereo Receiver. NOTE: Do not put the earphones in your ears at this point.

11.Turn on receiver with volume in minimum position.

12.With volume on receiver at minimum position, put earphones into your ears and gradually increase volume until appropriate level is reached.

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M3 Wireless In-Ear Monitor System – Introduction

Thank you for buying the Audio-Technica M3 Wireless In-Ear Monitor System. This feature-rich in-ear monitor system is designed to provide you with comfortable high-fidelity sound on stage.

The M3 is a frequency-agile in-ear monitor system designed to make stage monitoring more effective, comfortable, portable, and intelligible. The M3R Stereo Receiver allows the user to create and control his/her own mix on stage with Personal Mix Control that offers independent control of volume and mix at the receiver. The M3T Stereo Transmitter offers two 1/4"/XLR combo input connectors into which users can connect line-level inputs (from a mixing console, for example). The M3T Stereo Transmitter also offers a headphone output that allows you to monitor transmitter input signals directly. The transmitter and receiver each

offer an LCD information display that provides step-through menus for setting preferences. The supplied earphones are equipped with a proprietary Audio-Technica dynamic driver offering a full frequency response and richly detailed high-fidelity sound. The clean, articulate mix allows performers to hear themselves at comfortable SPLs. The earphones come with three sizes of flexible rubber eartips and a universal-fit foam tip for a custom fit, increased isolation and longwearing listening comfort.

Note: M3 “L” Band receivers must be used only with “L” Band transmitters; the same holds true for M3 “M,” “E,” and “F” Band receivers and transmitters. For multiple-channel applications, as many as 16 systems may be used together per frequency band.

System Features

•High-fidelity sound with clean, articulate mix allows you to hear yourself better at lower volumes

•Over 1250 selectable UHF channels with automatic frequency scanning

•Up to 16 simultaneous systems per frequency band

•Three receiver modes: Personal Mix, stereo, and mono

•Personal Mix Control allows you to adjust your own mix on stage

•LCD information display offers step-through menus for setting preferences

•XLR loop output (true pass-through) connects signal to mixing console, additional IEM system or recording device with no signal degradation

•Adjustable squelch eliminates annoying static

•Pilot tone protects against RF interference when the transmitter is turned off

•Three-stage limiter (defeatable) helps protect your hearing from sudden peaks

•Portable system is quick to load and set up

•Reduces on-stage audio clutter for better overall mix & less feedback

•Use any number of M3R Stereo Receivers on the same frequency

•Earphones with proprietary dynamic driver offer full frequency response and outstanding isolation

•Earphones feature personal fit with 3 sizes of rubber eartips plus an ear-conforming foam tip

•Selectable auxiliary input offers connection point for ambient microphone, click track, or other micor line-level input.

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M3T Transmitter Controls

(front panel) (rear panel)

1.Power switch. Depress once to turn on. Depress again to turn off.

2.Headphone output. 1/4" TRS jack provides monitoring of audio feed at the transmitter. Plug in either a mono or stereo headphone.

3.Headphone level control. Adjusts level of monitor headphones; affects 1/4" headphone jack only. Does not affect transmitter audio output.

4.Liquid crystal display. Indicates control settings and operational readings. It is also used with the Mode/Set and Up/Down arrow buttons to change user-configurable functions. See page 7 for details.

5.Up/Down buttons. Use with the Mode/Set button to step through menus, select operating frequency and edit receiver function choices.

6.Mode/Set button. Use with the Up/Down arrow buttons to step through menus, choose operating frequency and select receiver function options.

Two distinct operations are associated with this button: Touch: A momentary press of the Mode/Set button is used to enter Menu mode, to enter Edit mode, or to Escape without making any changes to current settings.

Hold: A press and hold (about two seconds) of the Mode/Set button is used to accept a new setting when the receiver is in Edit mode or to save the current settings.

7.Detachable flexible antenna. Detachable antenna transmits to receivers.

8.Data port. For factory use only.

9.Loop output. The R/2 XLR jack duplicates the unprocessed signal

of the R/2 input; the L/1 XLR jack	the unprocessed
signal of the L/1 input. Not affected by front panel settings.
10. Attenuators. Offer -20 dB, -10	0 dB attenuation for each
input.

11. Inputs. Combination input jacks offer both XLR and 1/4" jacks.

12. DC input. Plug the included power

in here.

13.Cord hook. Loop the small DC cord around the cord hook to keep the DC plug from pulling out accidentally.

Phantom power

The transmitter does not provide phantom power, but it does allow phantom power to pass through from phantom power supply to a device plugged into either input jack.

CAUTION: If connecting instruments	a mixing console through
the transmitter loop output, then use a direct box to prevent
damage to your instruments and/or	from the mixing
console’s phantom power; i.e. hook	instrument into a direct
box, then hook your direct box into	transmitter.

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M3R Receiver Controls

3 5 6

	1
9
13
7	8
	8
10




1.	On/off volume knob. Turn inner knob to the	turns on with
	click. Turn volume up with clockwise turn; turn volume down with
	counterclockwise turn.
2.	Balance control. 12 o’clock position offers	left (L/1) and right
	(R/2) level in both ears. In typical setups, turn	knob counter-
	clockwise from the 12 o’clock position to hear more of L/1 in both
	ears; turn the knob clockwise from the 12	position to hear
	more of R/2 in both ears.

3.Earphones locking output jack. Connect your supplied earphones to this 3.5 mm locking jack.

4. AF peak indicator. Illuminates orange to	audio signal is at
peak level.

5.RF indicator. Illuminates green to indicate RF signal is present.

6.Removable flexible antenna. Receives RF signal from the transmitter.

7. Selectable aux input. Connect a 3.5 mm line	mic level input to
this auxiliary input. (Mic or Line level is	by the Receiver’s

LCD information display, Aux Level menu; see Aux Level, page 9.)

RING

TIP

SLEEVE

Note: If you connect a stereo source (such as an MP3 player) into the M3R Stereo Receiver’s Aux Input, be certain to use a mono adapter to protect your equipment from the DC voltage that is applied to the ring of the stereo connector.

8.Aux input on/off switch. Slide tab in direction of “On” to enable the Aux input. Slide tab in direction of “Off” to disable the Aux input.

9.Belt clip. Attach the receiver to your belt or guitar strap with this belt clip.

10.Battery door release. Slide tabs in direction of arrows to open battery compartment door.

11.Battery compartment. See How to install batteries in your M3R Stereo Receiver, page 10.

12.Liquid crystal display (with timed backlight). Indicates control settings and operational readings. Backlight, on when receiver is first turned on, times out after about 25 seconds; touch Set or either of the Up/Down arrow buttons to turn the backlight on at any time.

13.Up/Down arrow buttons. Use Up or Down arrow buttons with the Set button to step through menus, select operating frequency and edit receiver function choices.

14.Set button. Use with the Up/Down arrow buttons to step through menus, choose operating frequency and select receiver function options.

Two distinct operations are associated with this button: Touch: A momentary press of the Set button is used to enter

Menu mode, to enter Edit mode, or to Escape without making any changes to current settings.

Hold: A press and hold (about two seconds) of the Set button is used to accept a new setting when the receiver is in Edit mode or to save the current settings.

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How to make setting changes on the M3T Stereo Transmitter

To access the M3T Stereo Transmitter’s user-changeable functions, Touch the Mode/Set button. The top line of the transmitter display shows “FREQ”. Touch the Down arrow button to scroll through the functions that may be changed. Note that for Frequency, Trim, RF

Power, HP Out, the display’s lower line indicates the current setting for the given function.

To change a transmitter function, when the function to be edited is displayed, touch the Mode/Set button. The small word “EDIT” will flash in the display. Touch the Up/Down arrow buttons to scroll through the available choices for the function, stopping on the desired choice. Hold the Mode/Set button to accept the new choice. “STORED” appears in the display when the choice is accepted. The transmitter then returns to Menu mode. Continue this process until all desired function-setting changes are complete. Note: To escape from Edit mode without making any changes, touch the Mode/Set button. “ESCAPE” appears briefly in the display, and the transmitter returns to Menu mode.

M3T Stereo Transmitter Functions
Function Menu	Default Value	Choices (Edit)	Wrap-around*
▲▼ Frequency	Lowest in band	Over 1250 discrete frequencies	Yes
▲▼ Group	G1 - 1	G1 – G6 (16 channels each)	Yes
▲▼ User	U1 - 1	U1 – U3 (16 channels each)	Yes
▲▼ Trim	0	0 – Unlimited	No
▲▼ RF Power	High	Low, High	Yes
▲▼ HP Out (Headphones Output)	Stereo	Stereo, L/R Mix	Yes
▲▼ Program	-	Create custom frequency groups
▲▼ Reset	-	Choose OK to restore factory settings
▲▼ Quit (exit Menu)	QUIT	Press Mode/Set once to exit

* Continue in the same Up/Down direction and choices “wrap around” to the other end of the range.

Frequency (Transmitter)

Permits manual selection of a frequency. See How to Select a Frequency, page 11.

Group (Transmitter)

Permits selection of frequency groups with pre-coordinated channels. There are six frequency groups, each offering 16 pre-coordinated channels. See How to Select a Frequency, page 11.

User (Transmitter)

Permits selection (optional) from among three user-created frequency groups. See How to Select a Frequency, page 11.

Trim (Transmitter)

Controls level of both inputs (L/1 and R/2). Trim levels are set at the factory to the maximum position (0); adjust if necessary. See Setting Levels, page 12.

RF Power Adjustment (Transmitter)

Allows you to set RF power to “RF HI” or “RF LOW”. The default setting is “RF HIGH.” When the setting you prefer is shown, Hold the Mode/Set button.

Headphones Output (Transmitter)

Allows you to switch headphones output between Mix and Stereo. In the Stereo setting, the L1 signal goes to the left earphone; the R2 signal goes to the right earphone. In the Mix setting, a combined signal from both the L/1 and R/2 inputs goes to both earphones. When the setting you prefer is shown, Hold the Mode/Set button.

Program (Transmitter)

In the event that the preprogrammed frequency groups (available under the Group menu) do not meet your requirements, Audio-Technica allows you to program custom frequency groups. See How to Select a Frequency, page 11.

Reset (Transmitter)

Allows you to reset all transmitter functions to their factory-default values. Hold the Mode/Set button while “RESET” is displayed in the LCD window. At the prompt “OK?” hold the Mode/Set button again. Factory-default settings will be restored.

Quit (Transmitter)

To exit the Edit mode, press the Down arrow until “QUIT” is displayed in the LCD window. Then press the Mode/Set button once to exit the menu. The “AF” scales will reappear in the window, indicating the return to normal operation.

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How to make setting changes on the M3R Stereo Receiver

To access the M3R Stereo Receiver’s user-changeable functions, Touch the Set button. The top line of the transmitter display shows “FREQ”. Touch the Down arrow button to scroll through the functions that may be changed. (See the chart below.)

To change a receiver function, when the function to be edited is displayed, touch the Set button. (Note: When the M3R Stereo Receiver is first powered on, the LCD’s timed backlight is on. After the backlight has timed out, a touch of the Set or Up/Down arrows turns the light on again. In this case, you will need to touch the Set button twice in order to change a receiver function, since the first touch will simply turn the backlight on.)

The small word “EDIT” will appear in the display. Touch the Up/Down arrow buttons to scroll through the available choices for the function, stopping on the desired choice. Hold the Mode/Set button to accept the new choice. “STORED” appears in the display when the choice is accepted. The receiver then returns to Menu mode. Continue this process until all desired function-setting changes are complete. Note:

To escape from Edit mode without making any changes, touch the Mode/Set button. “ESCAPE” appears briefly in the display, and the receiver returns to Menu mode.

M3R Stereo Receiver Functions
Function Menu	Default Value	Choices (Edit)	Wrap-around*
▲▼ Frequency	Lowest in band	Over 1250 discrete frequencies	Yes
▲▼ Group	G1 - 1	G1 – G6 (16 channels each)	Yes
▲▼ User	U1 - 1	U1 – U3 (16 channels each)	Yes
▲▼ Scan /*	No value	Scan start	--
▲▼ Limiter	3 (maximum limiting)	3, 2, 1, Off	Yes
▲▼ Squelch	0	Off, -1, 0, 1, 2	No
▲▼ Mode	Stereo	Stereo, Mono	Yes
▲▼ Output	Stereo	Stereo, L/R Mix	Yes
▲▼ Aux level	Line	Line, Mic	Yes
▲▼ Mic Volume (if Aux set to Mic)	1	1 – 16	No
▲▼ Program	-	Create custom frequency groups
▲▼ Reset		Choose OK to restore factory settings
▲▼ Quit (exit Menu)	QUIT	Press Mode/Set once to exit

* Continue in the same Up/Down direction and choices “wrap around” to the other end of the range.

Continued on page 9

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How to make setting changes on the M3R Stereo Receiver (continued)

Frequency (Receiver)

Permits manual selection of a frequency. See How to Select a Frequency, page 11.

Group (Receiver)

Permits selection of frequency groups with pre-coordinated channels. See How to Select a Frequency, page 11.

User (Receiver)

Stereo Mode & Mix Output

The Stereo/Mix configuration is used as follows: the signals from both the L/1 and R/2 inputs go to both the left and right earphones. Use the receiver’s balance control as follows: turn clockwise to make R/2 louder and L/1 quieter; turn counterclockwise to make L/1 louder and R/2 quieter. (However you adjust the balance control, both the left and right earphones will have the same total volume). See image B on page 14.

Permits selection (optional) from among three user-created frequency groups. See How to Select a Frequency, page 11.

Scan (Receiver)

Allows you to scan automatically for an available frequency. See How to Select a Frequency, page 11.

Limiter (Receiver)

Mono Mode (Output setting does not apply here; either Mix or Stereo has the same result)

The Mono/Mix configuration is used as follows: there is only one output from your mixer (connected to either the L/1 or R/2 input of your transmitter). This signal will go to both left and right earphones. When two-signal transmission is not required, use Mono Mode for improved signal-to-noise performance. See image C on page 15.

Limits output level to earphones. Choices are 3,2,1, OFF. Factory setting is 3 (maximum limiting). Touch the Up/Down arrow buttons to change the setting. When the setting you want to select is shown,

Hold the Set button. IMPORTANT: Leave limiter at setting 3. This setting protects your hearing from unexpected signal peaks; it does not protect your hearing from long-term exposure to high SPLs.

Squelch Control (Receiver)

Allows you to adjust squelch on receiver, eliminating unwanted background RF noise. Maximum squelch setting (minimum range) is 2; OFF is no squelch (maximum range). Touch the Up/Down arrow buttons to change the setting. When the setting you want to select is shown, Hold the Set button.

Mode (Receiver)

Permits changing the receiving mode from Mono to Stereo. Touch the Up/Down arrow buttons to change the setting. When the setting you want to select is shown, Hold the Set button. (See Output, below.)

Output (Receiver)

The Mode and Output menus are used together as follows:

Stereo Mode & Stereo Output

The Stereo/Stereo configuration is used as follows: the L/1 input signal goes to the left earphone; the R/1 input signal goes to the right earphone. Use the receiver’s balance control to adjust the stereo image. See image A on page 14.

Aux Level (Receiver)

Allows you to change the auxiliary input from mic level to line level. When the setting you prefer is shown, Hold the Set button. Choose mic level if you are connecting an ambient microphone (optional Audio-Technica lavalier microphone) to the M3R Stereo Receiver’s auxiliary input. Choose line level if you are connecting a click track or other line-level source to the auxiliary input.

Mic Vol (Receiver)

If you have selected Mic Level (in the Aux Level menu above), the Mic Vol menu allows you to adjust the volume of the ambient microphone (optional Audio-Technica lavalier microphone or equivalent). 1 is the lowest volume level; 16 is the highest volume level. When the setting you prefer is shown, Hold the Set button. (Note: the Mic Vol menu does not appear if you have selected Line Level in the Aux Level menu.)

Program (Receiver)

Reset (Receiver)

Allows you to reset all receiver functions to their factory-default values. Hold the Set button while “RESET” is displayed in the LCD window. At the prompt OK? hold the Mode/Set button again. Factory-default settings will be restored.

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How to install the batteries in your M3R Stereo Receiver

Each M3R Stereo Receiver uses two 1.5V AA batteries, not included. Alkaline type is recommended. Always replace all batteries. Make certain the receiver power is Off before replacing batteries.

1. Open the battery compartment door by sliding tabs in the direction of the arrows and rotating the door open.

2. Observe correct polarity as marked and carefully insert two fresh 1.5V AA alkaline batteries

3. Close the door, making certain the latches click securely in place.

Note: The M3R Stereo Receiver’s “fuel gauge” battery indicator displays a maximum of four bar segments. When it flashes “LOW.BAT”, the batteries should be replaced immediately to ensure continued operation.

System Operation

Placement: Location

For best operation, place the M3T Stereo Transmitter near the performance location. The transmitter should be at least 1 meter (3 feet) from the receiver. Keep antennas away from noise sources such as digital equipment, motors, automobiles and neon lights, as well as away from large metal objects. Audio-Technica recommends that you do not locate the M3T Stereo Transmitter in the same rack with a wireless microphone receiver.

System set-up:

1.Plug in the included AC adapter and connect to transmitter’s DC input.

2.Insert two AA batteries in the receiver, observing polarity as indicated.

3.Power on your receiver (without earphones) with volume in minimum position. Note: At this point, check to be certain the

RF indictor is not illuminated. If it is illuminated before you have powered on the transmitter, this means the frequency you have chosen is already in use. Choose another frequency.

4.Power on the transmitter.

5. Set the receiver and transmitter to the same frequency group and frequency channel. (See page 17.) Note: Do not set more than one transmitter to the same frequency.

6.Check the RF LED on your receiver to be certain it is illuminated. (This indicates that it is receiving a signal from the transmitter.)

7.Power off both units (transmitter and receiver).

Audio set-up:

8.Connect audio source(s) to inputs on the rear panel of the transmitter. There are two combination audio inputs on the back panel; each offers both XLR and 1/4" inputs. Use shielded audio cable for the connection between the transmitter and the audio source (mixer or instrument). Note: If you want to send the audio signal through your transmitter (to another transmitter or recording device, for instance), use the Loop output connectors on the back of the M3T Stereo Transmitter. The R/2 XLR jack duplicates the unprocessed signal of the R/2 input; the L/1 XLR jack duplicates the unprocessed signal of the L/1 input. These are not affected by front panel settings.

9.Turn on the transmitter.

10.Set the attenuator on rear panel of transmitter to appropriate level. If AF level indicators (on right side of transmitter LCD) are consistently at or above +3, set the attenuator to -10 or -20 dB or turn the trim down for corresponding audio input.

11.Trim levels are set at the factory to the maximum position; adjust if necessary. (See page 12.)

12.Plug earphones into jack on receiver. Turn the locking ring clockwise until tight. NOTE: Do not put the earphones in your ears at this point.

13.Turn on receiver with volume in minimum position.

14.With volume on receiver at minimum position, put earphones into your ears and gradually increase volume until appropriate level is reached.

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How to select a frequency

You have several choices of how to select a frequency on your M3T Stereo Transmitter and M3R Stereo Receiver:

•select a frequency manually,

•select a preprogrammed frequency group and channel,

•create a custom frequency group,

•scan automatically (M3R Stereo Receiver only) for an available frequency group and channel.

Note: Select a unique frequency for each M3T Stereo Transmitter in use. Any number of M3R Stereo Receivers can be set to the same frequency (as that of their associated transmitter) and receive the same mix.

Note: On the M3R Stereo Receiver, the “Set” button has the same function as does the “Mode/Set” button on the M3T Stereo Transmitter.

1.If you choose to manually select a frequency, use the FREQ menu on the LCD window of the M3T Stereo Transmitter and M3R Stereo Receiver.

When “FREQ” is displayed, touch the Mode/Set (or Set) button. The small word “EDIT” appears in the display, indicating Edit mode. Touch the Up/Down arrow buttons to scroll through the available choices for the first three digits of the frequency, stopping on the desired choice. Hold the Mode/Set (or Set) button to accept the new choice.

Touch the Up/Down arrow buttons to scroll through the available choices for the last three digits of the frequency, stopping on the desired choice. Hold the Mode/Set (or Set) button to accept the new choice. “STORED” appears in the display when the choice is accepted. The unit then returns to Menu mode. Note: To escape from Edit mode without making any changes, touch the Mode/Set (or Set) button. “ESCAPE” appears briefly in the display, and the unit returns to Menu mode.

2.Instead of manually selecting a frequency, you may select a frequency group and channel (Group 1 – Channel 1 through Group 6 – Channel 16) via the GROUP menu on the LCD window of the M3T Stereo Transmitter and M3R Stereo Receiver.

When “GROUP” is displayed, touch the Mode/Set (or Set) button. The small word “EDIT” appears in the display, indicating Edit mode.

Touch the Up/Down arrow buttons to scroll through the available choices for the function, stopping on the desired choice. Hold the Mode/Set (or Set) button to accept the new choice. “STORED” appears in the display when the choice is accepted. The unit then returns to Menu mode. Note: To escape from Edit mode without making any changes, touch the Mode/Set (or Set) button. “ESCAPE” appears briefly in the display, and the unit returns to Menu mode.

Note: All channels within a given group are compatible. If you are using multiple transmitters, set each transmitter to a different channel within the same group.

3.In the event that the preprogrammed frequency groups (available under the Group menu) do not meet your requirements, Audio-Technica allows you to program custom frequency groups as follows:

Hold the Mode/Set (or Set) button while “PROG” is displayed in the LCD window. The display will show the custom frequency group

number “U1” and channel “ 1”; change this field with the Up/Down arrows (scrolling through 16 channels for each of three frequency groups, U1 – U3, until you arrive at the group and channel number you want to program. Hold the Mode/Set (or Set) button a second time. The first three digits of the frequency will flash; you may change this field with up-down arrows. Hold the Mode/Set (or Set) button a third time. Now the second three digits of the frequency will flash; you may change this field with the Up/Down arrows. Hold the Mode/Set (or Set) button again. The display will briefly show “STORED”, and the unit will return to normal operation.

4.On the M3R Stereo Receiver, you also have the choice of using the Automatic Frequency Scanning function to select a frequency, as follows:

•When “SCAN” is displayed in the LCD window, touch the Set button; then the word “MENU” will disappear from the window, and the small word “EDIT” will appear in the display along with the frequency group G1.

•Use the Up/Down arrow buttons to reach any of the following scan groups: G1, G2, G3, G4, G5, G6, U1, U2, or U3.

•Press the Set button once to select one of these nine Scan groups and begin the scan. The word “SCAN” will appear briefly in the LCD window; then the lowest available channel in the selected Scan group will appear in the LCD window.

•If you do not wish to use the frequency found, you may press the Up or Down arrow. The Up arrow will scan upwards, the Down arrow will scan downwards, from the frequency you are on.

•To activate a frequency selection, press and hold the Set button until the word “STORED” appears in the LCD window. (If you do not wish to complete this particular selection, just press the Mode/Set button once. The word “ESCAPE” will appear briefly in the window and the receiver will return to the Menu mode.)

•After you have activated your frequency selection, the word “Menu” will reappear in the window, indicating the return to normal operation.

•If you are using multiple systems, after completing the first receiver's scan and frequency selection, set the transmitter to the same frequency; leave the transmitter On, and run the next receiver’s automatic scan function. Always set a receiver-transmitter pair to the same frequency before using the automatic scan function to select a frequency for the next receiver. (When using multiple transmitters, always use the same frequency group.)

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How to select a frequency (continued)

Each transmitter/receiver system operates on a choice of over 1250 switch-selected frequencies per band. Available frequencies are shown in the chart on page 17. When using multiple transmitters, always use the same frequency group.

M3 “L” Band transmitters must be used only with “L” Band receivers; the same holds true for all the frequency bands (i.e., always use receivers and transmitters that operate in the same band). The Band marking will be found on the antenna of both the M3T Stereo Transmitter and M3R Stereo Receiver.

Note: Because these frequencies are shared with TV broadcasting (depending on country of use), frequency selection is largely dependent upon which TV broadcast channels are in operation where the wireless system is to be used.

Squelch Control

The squelch control is preset at the factory, but can be adjusted if you must use the system in a high RF interference area. If there is audio output from the receiver when your transmitter is off, adjust the squelch control so the system will receive the signal from your transmitter but “squelch” or eliminate the unwanted background RF noise. This adjustment will cause a reduction in useable range of the wireless transmitter, so set the control to the lowest position which reliably mutes the unwanted RF signals.

Setting Levels

Correct adjustment of transmitter audio input and receiver audio output is important for optimum system performance.

The M3T Stereo Transmitter trim (volume) controls (See Trim Control, page 7) have factory pre-set audio input levels. Factory setting is 0 (no attenuation). With a source plugged into the transmitter (at typical levels), check the AF level indicator on the transmitter. If the AF is

consistently at +3 or above, it may be necessary to adjust the transmitter trim until the AF level indicator is no longer consistently at high levels. No further transmitter trim adjustments should be needed, as long as the acoustic input does not change significantly.

Aux In jack

The M3R Stereo Receiver offers a 3.5 mm Aux In jack that allows you to add another audio source, such as a click track, or ambient microphone (optional Audio-Technica lavalier microphone).

•To use a condenser microphone as an ambient microphone, select Mic Level from the Aux Level menu on the M3R Stereo Receiver (See Aux Level, page 9); plug the microphone into the Aux In jack; and adjust the Mic Volume as needed (See Mic Vol, page 9).

•To use the Aux In jack as a line-level input, select Line Level from the Aux Level menu on the M3R Stereo Receiver (See Aux Level (Receiver), page 9); plug line-level source (a click track, for example) into the Aux In jack. Note: If you connect a stereo source (such as an MP3 player) into the M3R Stereo Receiver’s Aux Input, be certain to use a mono adapter to protect your equipment from the DC voltage that is applied to the ring of the stereo connector.

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