AKG Acoustics WMS 81, WMS 61 manual Bodypack Transmitter, Frequencies, Multichannel Systems

2i Frequency Set Designation: The label inside the battery com- partment also indicates the designation of the Frequency Set.

2j Adjustable protective ring: Protects the controls from being misadjusted accidentally.

5.2. Interchangeable Microphone Elements

The interchangeable microphone elements (2k) D 880 WL1, D 3700 WL1, D 3800 WL1, C 5900 WL1, and C 535 WL1 are acoustically and mechanically identical to the equivalent hardwire versions. They feature the same transducer capsules and mechanical construction.

Extremely high gain before feedback, optimum handling noise rejection, ultimate protection from damage, and an integrated wind and pop screen are only the most impressive features of these microphones. For more details, refer to the respective AKG brochures.

5.3. Optional Accessories

W 880 foam windscreen for D 880 WL1

W 3001 foam windscreen for D 3700 WL1 and C 5900 WL1

W 23 foam windscreen for C 535 WL1

Color Coding Kit

6. Bodypack Transmitter

You can use the PT 61 bodypack transmitter with both dynamic microphones and condenser microphones operating on a supply voltage of approx. 7 V. You may also connect an electric guitar, electric bass, or remote keyboard.

The PT 61 operates in a subband up to 4 MHz wide of the 138 MHz to 250 MHz VHF carrier frequency range. The HT 61 can be switched to a maximum of 15 different carrier frequencies depending on local frequency allocations.

The PT 81 is identical to the PT 61 except that it operates in the 710 MHz to 869 MHz UHF range

6.1. Controls

3a POWER: Switches the transmitter power ON (“I”) and OFF (“0”).

3b MIC: Mutes the audio signal (position “0”) while power and carrier frequency remain ON.

3c Status LED: Indicates battery status and audio input overload. LED glowing dimly: batteries are OK.

LED constantly lighting brightly: batteries will be dead in about 60 minutes.

LED illuminating brightly: audio input is overloaded.

3d Audio Input: 3-pin mini XLR connector with both mic and line level pins that automatically match the connector pinout of the microphone or optional MKG/L guitar cable.

3e Color Code: If you use the transmitter within a multichannel system, you may remove the black plastic platelet and re- place it with a colored platelet included in the optional Color Coding Kit to identify each channel by a different color.

3f CHANNEL: This rotary switch selects the desired carrier fre-

quency.

Important: Prior to selecting frequencies, switch the transmitter OFF.

3g Belt Clip for fixing the transmitter to your belt.

3h Battery Compartment: Refer to Section 9. Setting Up.

3i Antenna: Permanently connected, flexible antenna.

3j GAIN: This rotary pot allows you to match the microphone or instrument level to the transmitter’s audio section.

3k Carrier Frequency Table: A label listing the available fre- quencies is affixed to the transmitter rear panel.

3l Frequency Set Designation: The label on the rear panel also indicates the designation of the Frequency Set.

3m Security Cover: Protects the POWER and MIC switches from being actuated unintentionally.

6.2. Microphones, Guitar Cable (optional)

The following AKG microphones have been designed specifically for direct connection to the audio input of the PT 61 or PT 81:

C 417 L

C 419 L

C 420 L

CK 77 L

The MKG/L guitar cable from AKG lets you connect an electric guitar, electric bass, or remote keyboard to the bodypack trans- mitter.

6.3. Optional Accessories

CB 60 bag

Color Coding Kit

7. Frequencies

The transmitter and receiver of your WMS 61 or WMS 81 system have been factory programmed for up to 15 selectable carrier fre- quencies. The carrier frequency label (1k) on the receiver, (2g) on the handheld transmitter, or (3k) on the bodypack transmitter lists the Frequency Set your WMS 61 or WMS 81 system uses and all available carrier frequencies.

7.1. Frequency Sets

Prior to powering up your WMS 61 or WMS 81 system, check that the transmitter and receiver use the same Frequency Set. If they do not, you may not be able to find a common carrier frequency for the transmitter and receiver.

For currently available Frequency Sets and frequencies suited for intermodulation-free simultaneous operation, refer to the Frequency Lists in section 12.

7.2. Ordering Transmitters and Receivers

If you want to order additional transmitters or receivers operating on the same set of frequencies as your original equipment, be sure to state the designation of your original Frequency Set (1k/1l, 2i, 3k/3l) and the serial number of the original device. We need this information to make sure your new equipment will be compatible with the original units.

8. Multichannel Systems

Using optional RA 61 B or RA 81 B remote booster antennas, one to three PS 61 or PS 81 Power Splitters, and a PSU 01 Central Power Supply you can set up multichannel systems with a maxi- mum of ten receivers and only two remote antennas. For detailed instructions on how to set up and operate multichannel systems refer to the PS 61 or PS 81 Manual.

In each carrier frequency table (1k, 2h, 3k), the basic frequencies you can use simultaneously and without risk of intermodulation are marked with *.

If you have any questions regarding allocated frequencies contact your dealer, the competent authority, your AKG representative, or the AKG head office in Vienna, Austria.