AKG Acoustics PR 81, HT 81 manual Part IV PT 81 Bodypack Transmitter, Microphones

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PART IV: PT 81 BODYPACK TRANSMITTER IV

1 Description

You can use the PT 81 bodypack transmitter with both dynamic microphones and condenser microphones operating on a supply voltage of approx. 7 V.

The PT 81 operates in a subband up to 3 MHz wide of the 710 MHz to 869 MHz UHF carrier frequency range. The PT 81 can be switched to a maximum of 15 dif- ferent carrier frequencies depending on local frequency allocations.

3a

POWER: Switches the transmitter power ON ("I") and OFF ("0").

1.1 Controls

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 recommended microphones

 

 

(see Part IV, section 1.2).

 

3e

Color Code: If you use the transmitter within a multichannel system, you may

 

 

remove the black plastic platelet and replace it with a colored platelet includ-

 

 

ed in the optional Color Coding Kit to identify each channel by a different

 

 

color.

 

3f

CHANNEL: This rotary switch selects the desired carrier frequency.

 

Prior to selecting frequencies, switch the transmitter OFF.

Important:

3g

Belt Clip for fixing the transmitter to your belt.

 

3h

Battery Compartment: Refer to Section 2 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 frequencies 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.

 

 

 

1.2 Microphones

The following AKG microphones have been designed specifically for direct

connection to the audio input of the PT 81:

(optional)

C 417 L

 

C 420 L

 

C 444 L

 

CK 77 L

 

 

 

2 Setting Up

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Open the battery compartment (3h).

2.1 Selecting the

 

 

All controls are now accessible.

Carrier Frequency

 

 

2.Use the supplied screwdriver (1m) to set the CHANNEL control (3f) to the de- sired channel.

3.Set the CHANNEL control (1k) on the receiver to the same channel as the transmitter.

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Contents PR 81 HT 81 PT Table of Contents Safety and Environment Part I GeneralDescription FCC StatementPR 81 receiver with accessories HT 81 handheld transmitter PR 81 receiver with accessories PT 81 bodypack transmitterUnpacking PR 81 receiverControls 1a Power I/O on/off switch II Part II PR 81 Receiver3 PT 81 CB 40 bag Color Coding Kit Setting Up Part II PR 81 ReceiverII Part II PR 81 Receiver Using the Belt Clip MountingReceiver on a Camera Audio ConnectionII Part II PR 81 Receiver Prior to selecting frequencies, switch the transmitter OFF Part III HT 81 Handheld TransmitterControls InterchangeableIII Part III HT 81 Handheld Transmitter Part IV PT 81 Bodypack Transmitter MicrophonesAdjusting the Transmitter and Receiver IV Part IV PT 81 Bodypack TransmitterPart V Operating Notes Cleaning Multichannel SystemsTroubleshooting Problem Possible Cause RemedyVI Part VI Appendix Specifications Part VI AppendixSet UK69B UKSpot Set US58 Set EU59 858.200MHz860.400MHz 734.600MHz 777.800MHz 860.900MHz 735.200MHz 778.400MHzPage 3k/3l

HT 81, PT 81, PR 81 specifications

AKG Acoustics has long been recognized as a leader in the field of professional audio equipment, and their HT 81, PR 81, and PT 81 microphones exemplify the brand's commitment to quality, innovation, and user-centric design. These microphones are particularly suited for applications in live sound, broadcast, and studio recording, making them versatile tools for audio professionals.

The AKG HT 81 handheld transmitter microphone is designed for wireless performance. It features a dynamic capsule that delivers a clear and natural sound, a significant advantage for vocal performances. The microphone is engineered to minimize handling noise and feedback, ensuring that the audio remains pristine even in challenging environments. Its robust build quality can withstand the rigors of touring and live shows, making it a reliable choice for entertainers on stage.

Complementing the HT 81, the PR 81 is a professional receiver that supports a wide frequency range, allowing for clear audio transmission without interference. This receiver is equipped with advanced diversity reception technology, which helps mitigate dropouts and ensures consistent audio quality, even in crowded RF environments. The PR 81 offers a range of connectivity options, enabling easy integration into existing audio systems, whether in venues or broadcasting setups.

The PT 81 bodypack transmitter is another integral component of this series, designed for use with lavalier or headset microphones. It features a lightweight and ergonomic design, ensuring comfort for performers during extended use. The PT 81 is equipped with a high-quality analog audio input, allowing for seamless connection to a variety of microphones. Its long battery life is a significant advantage, providing reliable operation for long events or sessions.

All three devices utilize AKG’s advanced wireless technology, which incorporates digital signal processing for enhanced audio quality and reduced noise interference. The system also offers multiple channels, allowing for the simultaneous use of multiple microphones without conflict. With quick and easy setup, users can spend more time focusing on performance rather than troubleshooting audio issues.

Overall, the AKG HT 81, PR 81, and PT 81 represent a powerful trio of wireless audio solutions. Their combination of durability, sound quality, and user-friendly features makes them an excellent choice for any professional looking to elevate their audio experience. Whether for stage, studio, or broadcast applications, these microphones stand out as reliable tools that deliver outstanding performance.
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