Sennheiser Freeport User manual

Instructions for use

Contents

Important safety instructions ......................................................... 2

The freePORT systems ...................................................................... 3

Delivery includes .......................................................................... 4

EM 1 receiver ...................................................................................... 4

SK 2 bodypack transmitter .............................................................. 6

SKM 3 radio microphone .................................................................. 8

Setting up the system ...................................................................... 9

Care and maintenance ....................................................................10

If problems occur... ..................................................................... 11

Accessories and variants ................................................................11

Specifications of the freePORT systems ......................................12

Connector assignment ..............................................................13

Manufacturer declarations .............................................................14

Warranty .....................................................................................14

CE Declaration of Conformity ..................................................14

Batteries or rechargeable batteries .......................................14

WEEE Declaration .......................................................................14

Statements regarding the FCC and Industry Canada rules 14

Thank you for choosing Sennheiser!

We have designed this product to give you reliable operation over many

years. Over half a century of accumulated expertise in the design and

manufacture of high-quality electro-acoustic equipment have made

Sennheiser a world-leading company in this field.

Please take a few moments to read these instructions carefully, as we

want you to enjoy your new Sennheiser products quickly and to the

fullest.

Important safety instructions

yRead this instruction manual.

yKeep this instruction manual in a safe place. Always include this

instruction manual when passing the device and the mains unit on to

third parties.

yHeed all warnings and follow all instructions.

yClean the device and the mains unit only with a dry cloth.

yRefer all servicing to qualified service personnel. Servicing is required

if the device or the mains unit has been damaged in any way, liquid

has been spilled, objects have fallen inside, the device or the mains

unit has been exposed to rain or moisture, does not operate properly

or has been dropped.

yWARNING: To reduce the risk of fire or electric shock, do not expose

the device and the mains unit to rain or moisture. Do not place objects

filled with liquids, such as vases or coffee cups, on the device.

yOnly use the supplied mains unit.

yDisconnect the mains connector from the wall socket

– to completely disconnect the device from the mains,

– during lightning storms or when unused for long periods of time.

yThe mains unit must be operated only from the type of power source

specified in the chapter “Specifications of the freePORT systems”

(page 12).

yEnsure that the mains unit is

– always readily operable and easily accessible,

– properly plugged into the wall socket,

– only operated within the permissible temperature range,

– not covered or exposed to direct sunlight for longer periods of time

in order to prevent heat accumulation (see “Specifications of the

freePORT systems” on page 12).

yDo not block any ventilation openings. Install the device and the

mains unit in accordance with the manufacturer’s instructions.

yDo not install the device and the mains unit near any heat sources.

yOnly use attachments/accessories specified by Sennheiser.

The freePORT systems

Designed for different areas of application, the freePORT systems are

available in three variants.

yPresentation Set:

This system is ideal for presentation applications. The unobtrusive

ME 2 clip-on microphone is virtually invisible.

yInstrument Set:

This system is for connecting musical instruments (e.g. guitar) which

have a ¼” (6.3 mm) jack socket directly to the bodypack transmitter.

yVocal Set:

This system is ideal for vocal and speech applications.

Transmitters and receivers of the freePORT systems have four factory-

preset frequencies for direct channel selection – ready for immediate

use after switch-on.

The freePORT systems are available in three UHF frequency ranges:

yFrequency range A: 719 to 721 MHz

yFrequency range B: 691 to 693 MHz

yFrequency range C: 742.5 to 744.5 MHz

yFrequency range E: 863 to 865 MHz

Notes:

Use of A, B and C frequency ranges must be licensed. Most EU

countries do not require licensing for use of frequency range E.

Frequency range B (691 to 693 MHz) is intended for use solely in

the USA and Canada.

Please be legal and observe the country-specific regulations of the

licensing authorities. Sennheiser are not responsible if you operate

illegally.

To avoid interfering with other users, the transmitter should be

switched off when not in use.

Features of the freePORT systems:

yUp to four transmission links per frequency range which can be

operated simultaneously

yReliable transmission technology

yDiversity technology for minimizing dropouts in the reception

yAdjustable squelch for eliminating RF interference

yRugged housings

yCrystal-clear reception due to dynamic processor

Delivery includes

EM 1 receiver

FreePORT systems

EM 1 receiver

SK 2

bodypack transmitter

SKM 3

radio microphone

Mains unit (NTxy)

ME 2

clip-on microphone

¼” (6.3 mm) jack cable

Stand mount

Instructions for use

Presentation Set XX XX X

Instrument Set XXXXX

Vocal Set XXX XX



Operating controls

Antenna A

Operation indication, green LED (POWER)

쐋RF level indication, four green LEDs

(RF LEVEL)

Channel selector switch CHANNEL (1 to 4)

Diversity indication, yellow LED A

(lights up if antenna is active)

Diversity indication, yellow LED B

(lights up if antenna is active)

AF PEAK, red LED (lights up if the audio

level is too high)

Antenna B

Audio output, XLR-3M socket, balanced

(AUDIO OUTPUT XLR BAL)

Audio output, ¼” (6.3 mm) jack socket,

unbalanced (AUDIO OUTPUT UNBAL)

Audio output level control (GAIN)

Squelch threshold control (SQUELCH)

DC socket for connection of mains unit

(DC 11–18 V IN, 100 mA)

Type plate

Serial number

Connecting the receiver

왘Insert the DC connector on the mains cable into the DC socket  and

connect it to the mains. The green LED for operation indication

(POWER) lights up and the receiver is ready for operation.

왘To deactivate the receiver, remove the mains plug from the mains

outlet.

Aligning the antennas

왘Set up the antennas and align them upwards in a V-shape.

The LEDs Aand Bindicate which diversity section (i.e. which

antenna) is active.

Connecting the amplifier/mixing console

왘Connect the amplifier/mixing console to the XLR-3M socket or

the ¼” (6.3 mm) jack socket .

왘Use the GAIN control  to adapt the level of the audio output to the

input of the amplifier or mixing console. The adjusted audio output

level is common for both sockets. If the level is adjusted too high,

the audio signal will be distorted. If, on the other hand, the level is

adjusted too low, this will result in an audio signal with high

background noise.

Selecting and changing a channel

You can change the channel on the receiver during running operation.

The receiver then immediately receives on the new channel.

왘Use a small screwdriver to set the channel selector switch to the

desired channel. You can switch between four different channels

(“Selecting a channel”).

SK 2 bodypack transmitter

Inserting/replacing the battery

We recommend powering the bodypack transmitter by a 9 V PP3

alkaline battery (IEC 6 LR 61). If powered by a rechargeable 9 V battery,

the operating time will be drastically reduced.

왘Open the battery compartment by first sliding the battery

compartment cover in the direction of the arrow. Then flip the

battery compartment cover open.

왘Insert the battery as shown. Please observe correct polarity when

inserting the battery.

왘Close the battery compartment.

Note:

When the red LED goes off during operation, you must replace

the battery as soon as possible.

Operating controls

ON/OFF button

Operation and battery status indication, red LED

쐋Microphone/instrument input,

3.5 mm jack socket (lockable)

Antenna (can be screwed off)

Battery compartment cover

MIC/INST slide switch

Serial number

Channel selector switch CH (1 to 4)

Sensitivity control GAIN

Type plate

Belt clip



Connecting the microphone/instrument cable

The audio input is designed for the connection of both the ME 2 clip-on

microphone and instruments (e.g. guitars).

왘Connect the 3.5 mm jack plug from the microphone/instrument

cable to the 3.5 mm jack socket 쐋.

왘Check the setting of the MIC/INST slide switch which allows you

to switch between microphone and instrument operation. If

necessary, readjust the setting.

왘Use the GAIN control  to adjust the transmitter sensitivity so that

the receiver receives a good audio signal (no distortion and no

background noise).

Attaching and positioning the microphone

Use the microphone clip to attach the ME 2 clip-on microphone to

clothing (e.g. tie, lapel). Conduct the microphone cable so that noise due

to friction is avoided and make sure that the antenna and the cable do

not cross. The omni-directional microphone picks up sound equally from

all directions. However, it should be attached as close as possible to the

sound source.

Attaching the bodypack transmitter to clothing

왘Use the supplied belt clip to attach the bodypack transmitter to

clothing. Make sure that the antenna is at least 1 cm away from the

body and is not kinked.

Switching the bodypack transmitter on/off

왘Press the ON/OFF button to switch the bodypack transmitter on

or off. If the bodypack transmitter is switched on, the red LED 

lights up.

Note:

Remove the battery when the transmitter will not be used for

extended periods of time.

Selecting and changing a channel

왘Switch off the transmitter before you change the channel.

왘Use a small screwdriver to set the channel selector switch to the

desired channel. You can switch between four different channels.

When you switch on the bodypack transmitter again, it will transmit

on the new channel (“Selecting a channel”).

SKM 3 radio microphone

Note:

The microphone head of the radio microphone cannot be changed.

Inserting/replacing the battery

We recommend powering the radio microphone by a 9 V PP3 alkaline

battery (IEC 6 LR 61). If powered by a rechargeable 9 V battery, the

operating time will be drastically reduced.

왘Turn the locking ring of the battery compartment in the direction

of the arrow.

왘Pull the body of the radio microphone 쐋in the direction of the

arrow as far as it will go.

왘Insert the battery as shown. Please observe correct polarity when

inserting the battery.

왘Close and lock the radio microphone.

Note:

When the red LED goes off during operation, you must replace

the battery as soon as possible.

Operating control

Sound inlet basket

Locking ring of battery compartment

쐋Body of radio microphone

Battery compartment (not visible from

outside)

Antenna (can be screwed off)

Operation and battery status indication,

red LED (POWER)

ON/OFF switch

Channel selector switch CH (1 to 4)

Type plate

Serial number

Switching the radio microphone on/off

왘Use the ON/OFF switch to switch the radio microphone on or off.

If the radio microphone is switched on, the red LED  lights up.

Note:

Remove the battery when the transmitter will not be used for

extended periods of time.

Selecting and changing a channel

왘Switch off the radio microphone.

왘Open the radio microphone (“Inserting/replacing the battery”).

왘Use a small screwdriver to set the channel selector switch to the

desired channel. You can switch between four different channels

(“Selecting a channel”).

왘Close and lock the radio microphone.

왘Switch on the radio microphone again.

Sensitivity of the radio microphone

You can vary the bass reproduction by increasing/decreasing the

talking distance.

Setting up the system

Before starting transmission, do a soundcheck and set up the system as

follows:

Setting up the reception

The receiver’s four LEDs (RF LEVEL) 쐋indicate the level of the received

RF signal. With the transmitter, walk up and down the transmission

area and check if the received RF signal is sufficient everywhere.

Reception is good if all four LEDs light up. Please observe the following:

yTransmission range depends to a large extent on location and can be

up to 100 m. Observe a minimum distance of 3 m between

transmitter and receiver. There should be a “free line of sight”

between transmitting and receiving antennas.

yDo not operate the system close to metal objects such as cross

members or reinforced-concrete walls. Computers or mobile phones

in direct proximity to the antenna will interfere with the reception.

yEach transmitter requires a receiver. When using several trans-

mission links simultaneously, make sure that all transmission links

operate on different channels.



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