Samson K2 Micro Earset Wireless System

Introduction

Samson airline mini wireless ear set System provides the most covert, cozy, and practical wireless option available when mobility affects your performance. A breakthrough in wireless microphone technology is the Samson airline mini wireless ear set System. The airline mini is one of the tiniest and most adaptable wireless systems ever, using compact, high-quality audio and RF components and rechargeable batteries. This wireless system, which does away with belt packs, uses the Ah2 single ear set transmitter for unrestricted movement and total independence. An omnidirectional microphone is built into the transmitter to ensure that your speech is picked up and amplified uniformly. This makes the airline micro system perfect for high-energy artists, fitness instructors, and speakers. The expert engineering of the AR2 micro receiver produces high-quality sound in a discrete case that can operate for up to seven hours on a single charge, making it ideal for mobile sound systems with intermittent AC power.

SYSTEM COMPONENTS

NOTE: Universal AC Adaptor works from 100V – 240V. Plug adaptors snap into place and can be changed by sliding the button below the plug. Each system is shipped with one plug adaptor specific to the country where the system is purchased. Plug adaptors can be ordered through Samson.

QUICK START

Please follow these basic procedures for setting up and using your AirLine Micro:

1. For your AirLine Micro system to work correctly, both the receiver and transmitter must be set to the same channel. Remove all packing materials (save them in case your unit needs service in the future) and check to make sure that the supplied receiver and transmitter are set to the same channel.
   NOTE: The channel number is laser-engraved on the back of the AR2 and AH2 chassis. If these channels do not match, please contact Samson Technical Support at 1-800-372-6766. If your unit was purchased outside of the United States, please contact your local distributor.
2. Before using your AirLine Micro system you should fully recharge the transmitter and receiver batteries. Plug the AC adaptor into a power socket. Connect the USB Y-Cable into the USB socket on the AC adaptor. Plug the two mini-USB connectors into the USB ports on the AH2 transmitter and AR2 receiver. When the transmitter and receiver are completely charged, the BLUE LED indicator will turn off.

GETTING THE MOST OUT OF THE RECHARGEABLE BATTERY:

Completely charge the batteries before first use

• Fully charge the battery before it will be used.
• After the battery is charged, unplug the charger from the outlet.
• The optimal temperature range for using and storing the battery is 50°F – 86°F (30°C – 50°C). The battery performance and operation may decrease in temperatures below 50°F (30°C).
• Remove the USB cable and continue with setup.
• Physically place the receiver where it will be used (if desired, the AR2 receiver model can be used with the included AR2D dock) and fully extend the antennas vertically.
• Turn your audio system off and connect the receiver’s 1/8” unbalanced output jack to the microphone or line level audio input of your amplifier or mixer. Set the AR2 Mic/Line Level switch to match the input.
• Turn on the receiver using the Power Switch. When on, the Status Indicator will be steady YELLOW.
• Turn on your AH2 transmitter by pressing and holding the Multi-Function Switch, until the Status Indicator LED flashes GREEN, then release it. The AH2 Status Indicator will now light steady GREEN. The AR2 receiver Status Indicator will change from YELLOW to GREEN indicating that it is receiving a valid RF signal.
• Position the AH2 on your head, as illustrated on page 7.
• Turn on your connected amplifier and/or mixer, but keep its volume all the way down. Make sure the AH2 transmitter is not muted.

NOTE: If the AH2 is muted, the AH2 Status Indicator LED will flash GREEN and the AR2 Status Indicator will flash GREEN. To unmute the AH2, press the Multi-Function Switch and the Status Indicator will light steady GREEN.

• Speak or sing into the earset microphone at a normal performance level while slowly raising the audio input control of your amplifier or mixer, until the desired volume is reached.
• If you hear distortion at the desired volume level, check to see whether the Status Indicator LED on the receiver is lighting RED. If it is not lit, make sure that the gain structure of your audio system is set correctly (consult the owner’s manual of your mixer and/or amplifier for details). If the Status Indicator is RED, simply move the microphone further from your mouth.

If you hear a weak, noisy signal at the desired volume level, make sure that the gain structure of your audio system and the Audio Output Level switch are correctly set. If the Audio Output Level switch is correctly set and the signal coming from the receiver is still weak and/or noisy, simply position the microphone closer to your mouth.

If you feel that the level of the microphone needs further adjustment, press and hold the AH2 Multi-Function Switch while the unit is powered on until the Status Indicator turns off, and release the switch. Then press and hold the Multi-Function Switch again for 5 seconds. The AH2 Status Indicator will first flash GREEN then flash YELLOW to show that you are in the Volume Adjustment mode. Press and release the Multi-Function Switch once, and the microphone volume will increase one level. To continue to adjust the microphone volume, press and release the Multi-Function Switch until the maximum level is reached. There are 5 levels. With each increasing level, the Status Indicator will flash faster. After level 5 is reached, the transmitter will cycle back down through the levels each time the Multi-Function Switch is pressed. As the levels decrease, the Status Indicator flashes slower. When the desired level is reached, release the Multi-Function Switch. The AH2 will return to normal operation after 10 seconds, and the Status Indicator will be steady GREEN.

Do a walk-around through the intended area of coverage while observing the AR2’s Status Indicator; it should stay steadily GREEN, indicating sufficient RF reception in all areas of coverage. If the AR2’s Status Indicator lights YELLOW, it designates RF dropout or muted receiver. Reposition the device (or its antennas) as necessary. If extended range coverage is required, another AR2 true diversity receiver (set to the same channel as the transmitter) should be used.

WEARING THE AH2 TRANSMITTER

The AH2 can be re-sized to fit comfortably on your ear.

1. Rotate the adjustment band up.
2. Position the AH2 over your left ear so that the body of the transmitter is behind your ear.
3. Push the adjustment band down until it fits comfortably in your ear and is secure against your head.
4. Position the microphone towards the corner of your mouth, approximately 1/2” away from the lips.
5. Position the moisture guard ring as close to the capsule as possible.
6. For outdoor use, and to help reduce p-popping, install one of the included windscreens.

GUIDED TOUR – AR2 RECEIVER

1. Antennas – The retractable antennas allow full rotation for optimum placement. In normal operation, both antennas should be fully extended and placed in a vertical position, as shown below.
2. POWER Switch – Use this to turn the AR2 power on and off.
3. Status Indicator – This three-color LED acts as a multi-function meter, indicating power, transmitter tone-key status, transmitter mute, and transmitter peak.

YELLOW	AR2 Powered On, No Tone-Key Present
GREEN	AH2 On, Normal Operation
Flashing GREEN	AH2 Audio Muted
RED	Transmitter Input Overloaded

 

4. Low Battery Indicator – This BLUE LED displays the status of the battery. The Low Battery Indicator will flash BLUE when the unit is on, and the battery is low. When recharging the AR2, the LED will be steady BLUE until the battery is fully charged, then the indicator will turn off.
   GUIDED TOUR – AR2 RECEIVER
5. Audio Output Level Switch – Sets the audio output level of the unbalanced output to microphone or line level.
6. USB DC Power Input – Connect the supplied universal adaptor to recharge the internal lithium ion rechargeable battery or to power the receiver. The USB DC input will also accept USB bus power from a computer USB port, or any 5-volt DC adaptor that has a USB output (including automotive).
   NOTE: The USB port is only used for charging purposes and cannot be used for data exchange between a PC and the AR2 receiver.
7. 1/8” Unbalanced Output – Use this unbalanced (600 Ohm min.) 1/8” (3.5 mm) mini-phone jack when connecting the audio equipment.

GUIDED TOUR – AH2 TRANSMITTER

1. Status Indicator – This LED displays the operation mode, low battery and recharge status of the transmitter.

GREEN	Normal Operation
Flashing GREEN	Mute
Flashing YELLOW	Volume Adjustment Mode
Fastest Flashing YELLOW	Maximum Level
Slowest Flashing YELLOW	Minimum Level
Flashing BLUE	Low Battery
BLUE	Recharging (LED will turn off when fully charged)

 

2. Microphone – Micro-miniature, 3mm omni-directional microphone capsule.
3. USB DC Power Input – Connect the supplied universal adaptor to recharge the internal Lithium Ion battery. The USB DC input will also accept USB bus power from a computer USB port, or any 5V DC adaptor that has a USB output.

NOTE: The Universal AC Adaptor will charge the AH2 & AR2 faster than a computer USB port.

NOTE: The USB port is only used for charging purposes and can’t be used for data exchange between a PC and the AH2.

4. Multifunction Switch – Press and hold to turn the unit on or off. Press and release to mute or unmute the transmitter. To adjust the transmitter volume, while the AH2 is powered on, press and hold until the power turns off, release the switch, then press and hold the switch for 5 seconds and the Status Indicator will first flash GREEN then flashes YELLOW.

Function	Activation	Hold Time	LED Status
Power ON/OFF	Press and Hold	> 1 sec	GREEN
Mute ON/OFF	Press	0.2 – 2 sec	Flashing GREEN
Volume Adjust	Press and Hold	> 5 sec	Flashing YELLOW
Increase Gain	Press (Total 5 steps)	> 0.2 sec	Flashing YELLOW
Decrease Gain	Press (Total 5 steps)	> 0.2 sec	Flashing YELLOW
Set Level	Don’t Press	10 sec	GREEN

AR2 DOCK

For added convenience and easy setup, we have included the AR2D dock. To use the dock please follow these steps:

1. Slide the AR2 receiver into the AR2D dock. There are two keys on the rear of the AR2 that will match up and align with the AR2D so that the receiver will fit correctly.
2. Attach the included 1/8” to 1/4” audio cable to the audio output on the back panel of the AR2D.
3. To recharge the AR2 receiver, connect the USB Y-cable to the USB DC input on the back panel of the AR2D and connect the cable to the included Universal AC adaptor.

SPECIFICATIONS

SYSTEM

OPERATING FREQUENCY

• K BAND:525 – 492.425 MHz
• E BAND:125 – 864.875 MHz

NUMBER OF CHANNELS

• K BAND: 6
• E BAND: 4
• WORKING RANGE: 300’ (100m) line of sight Audio
• FREQUENCY RESPONSE: 100Hz – 15kHz
• H.D. (OVERALL): < 1% (@AF 1kHz, RF 46dBu)
• OPERATING TEMPERATURE: -18°C (0°F) to +40°C (+104°F)
• STORAGE TEMPERATURE: -5°C (23°F) to +35°C (+95°F)

AR2 RECEIVER

• AUDIO OUTPUT CONNECTOR: 1/8” Unbalanced
• AUDIO OUTPUT LEVEL: (Typical) -30dBv (Mic), -10dBv (Line)
• AUDIO OUTPUT IMPEDANCE: Unbalanced 600 Ohms
• AF FREQUENCY RESPONSE: 50Hz – 15kHz
• ANTENNAS: Two 1/4 Wavelength Rod
• SELECTIVITY: ±150kHz (AF Out Ratio -60dB)
• S/N RATIO (OVERALL): 90dB (w/IHF-A Filter)
• SENSITIVITY: 18dBu (@ THD 2%)
• POWER REQUIREMENTS: Internal lithium ion rechargeable battery or AC adaptor
• BATTERY LIFE: ~6 hours
• INDICATORS: Power On, Tone Key, Transmitter Mute, Transmitter Peak, Battery Low, Recharging
• DIMENSIONS (LXWXH):7” x 0.51” x 2.4” 43 mm x 13 mm x 60 mm
• WEIGHT:5oz / 42g

AH2 TRANSMITTER

• AUDIO INPUT LEVEL: -110dBv ~ 0dBv Volume Adjustment Steps
• RF TRANSMITTER OUTPUT: 10mW ERP
• POWER REQUIREMENTS: Internal lithium ion rechargeable battery
• BATTERY LIFE: ~10 hours
• DIMENSIONS (LXWXH):7” x 0.6” x 2.3” 171mm x 14mm x 58mm
• WEIGHT:8oz / 22g

AIRLINE MICRO CHANNEL PLAN

K-Band		E-Band*
Ch	Freq	Ch	Freq
K1	489.050 MHz	E1	863.125 MHz
K2	490.975 MHz	E2	863.625 MHz
K3	492.425 MHz	E3	864.500 MHz
K4	477.525 MHz	E4	864.875 MHz
K5	479.100 MHz
K6	480.475 MHz

FAQs

References

• User Manual