AKG Acoustics HT 81 manual

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A good user manual

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- informations concerning technical data of AKG Acoustics HT 81
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Table of contents for the manual

  • Page 1

    PR 81 HT 81 PT 81 User Instructions Please read the manual before using the equipment![...]

  • Page 2

    Page P ART I: GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 0 FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1 Safety and Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1.1 Safety . . . . . . . . . . .[...]

  • Page 3

    1.1 Safety 1.2 Environment 2.1 Introduction 1. Spill no liquids on the equipment and do not drop any objects through the ventilation slots in the equipment. 2. Do not place the equipment near heat sources such as radiators, heating ducts, or amplifiers, etc. and do not expose it to direct sun- light, excessive dust, moisture, rain, mechanical vibra[...]

  • Page 4

    2.2 Unpacking 2.2.1 PR 81 Receiver 2.2.2 Handheld System 2.2.3 Bodypack System 2.3 Optional Accessories 2.3.1 PR 81 2.3.2 HT 81 The PR 81 portable receiver is available separately or as a complete system with an HT 81 handheld transmitter or PT 81 bodypack transmitter . Please check that the package contains all the components listed above for your[...]

  • Page 5

    2.3.3 PT 81 2.4 Frequencies 2.5 Ordering T ransmitters and Receivers 1.1 General 1.2 Controls 1.2.1 T op Panel Refer to section 1.3 Audio Output. CB 40 bag Color Coding Kit The PR 81 portable receiver , HT 81 handheld transmitter , and PT 81 bodypack transmitter have been factory programmed for up to 15 selectable carrier fre- quencies. A carrier f[...]

  • Page 6

    1.2.2 Front Panel 1.2.3 Rear Panel 1.3 Audio Output Important: 2.1 Selecting the Receiving Frequency 1g Antennas: Being a diversity receiver , the PR 81 uses two antennas in order to receive the transmitter signal at two differ ent points in space. The diversity circuit will automatically activate the antenna that provides the better signal. 1h Col[...]

  • Page 7

    Important: 2.2 Powering 2.2.1 Inserting Dry or Rechargeable Batteries Note: 2.2.2 Replacing Batteries 2.2.3 P A 81 Optional Supply Adapter If you wish to set up a multichannel system, read section 1.1 Multichannel Systems in Part V first. T o power the PR 81 portable receiver you can use the supplied 1.5 V AA size dry batteries, 1.5 V AA size recha[...]

  • Page 8

    Refer to your camcorder manual. Refer to section 2.2.2 above. Refer to your camcorder manual. Important: 2.3 Mounting the Receiver on a Camera (1s) 2.4 Using the Belt Clip 2.4.1 Attaching the Belt Clip 2.4.2 Removing the Belt Clip 2.5 Audio Connection 18 V DC and has a fixed 20-in. (50-cm) connecting cable with stripped and tinned leads. An automat[...]

  • Page 9

    2.6 Connecting Headphones Important: 2.7 Connecting to a Camera and Headphones Important: 2.8 Aligning the Antennas 2.9 Color Code T o connect a pair of headphones to the receiver , you will need an optional MK HP adapter cable from AKG. This cable provides a mini XLR connector and a TS mini jack for connecting headphones with a mini jack plug. In [...]

  • Page 10

    1.1 Controls Important: 1.2 Interchangeable Microphone Elements (not supplied) The HT 81 handheld transmitter and matching microphone elements (optional) provide the same acoustic performance as the equivalent hardwir e microphone versions. The microphone elements available for the HT 81 have been specifical- ly designed for vocal use. The HT 81 op[...]

  • Page 11

    2.1 Selecting the Carrier Frequency Important: Important: 2.2 Microphone Element 2.3 Inserting, T esting, and Removing Batteries Note: 2.4 Color Code 1. Unscrew the battery compartment cover CCW and remove the color code ring (2d or 2j) from the transmitter . All controls are now accessible. 2. Use the supplied screwdriver (1m) to set the CHANNEL c[...]

  • Page 12

    1.1 Controls Important: 1.2 Microphones (optional) 2.1 Selecting the Carrier Frequency Y ou 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 ca[...]

  • Page 13

    Important: Important: 2.2 Inserting and T esting Batteries Important: 2.3 Connecting and Using Microphones 2.4 Color Code 1.1 Adjustments Be sure to switch power to the transmitter OFF every time before changing the carrier frequency . The new carrier frequency will not be activated before you switch the transmitter back ON. (If you change the carr[...]

  • Page 14

    Refer to the manual of your camcorder or mixing console. Important: 1.2 Multichannel Systems Important: Important: 2. The red AF LED (1hd on the receiver constantly lighting r ed and/or the status LED (2b, 3c) on the transmitter lighting constantly means the transmitter is overloaded. T ur n the GAIN contr ol (2e) or (3j) on the transmitter CCW to [...]

  • Page 15

    30 P ART VI: APPENDIX VI 1 T r oubleshooting Problem No sound. Noise, crackling, unwanted signals. Distortion. Momentary loss of sound ("drop- outs") at some locations within performance area. Possible Cause 1. Receiver is OFF . 2. No batteries inside the trans- mitter and/or receiver . 3. Receiver is not connected to mixer or camcorder .[...]

  • Page 16

    31 P ART VI - APPENDIX VI 2 Specifications Carrier frequency range Modulation Audio bandwidth Frequency stability (-10°C to +50°C) Rated deviation T .H.D. at 1 kHz Compander Signal/noise ratio RF output Current consumption Power requirement Battery life Audio input level for rated deviation Input impedance Condenser mic power supply Audio outputs[...]

  • Page 17

    92 Set: UK69B (UKSpot) CHANNEL FREQ. 0 OFF 1 858.200MHz* 2 860.400MHz* 3 860.900MHz* 4 860.900MHz 5 860.900MHz 6 860.900MHz 7 860.900MHz 8 860.900MHz 9 860.900MHz A 860.900MHz B 860.900MHz C 860.900MHz D 860.900MHz E 860.900MHz F 860.900MHz Set: US58 CHANNEL FREQ. 0O F F 1 734.400MHz 2 734.600MHz* 3 734.800MHz 4 735.000MHz 5 735.200MHz 6 735.400MHz[...]

  • Page 18

    93[...]

  • Page 19

    PR 81 HT 81 HT 81 2d/2j HT 81 HT 81 HT 81 HT 81 HT 81 HT 81 BC A E D 2d/2j 2a 2c 2b 2e 2h/2i 2f 2g 2k 2 x 1 . 5 V PT81 0000Z0000 SNR:01001 AKG Set:EUS.. 1:000.000 9:000.000 MHz 2:000.000 10:000.000 MHz 3:000.000 11:000.000 MHz 4:000.000 12:000.000 MHz 5:000.000 13:000.000 MHz 6:000.000 3k/3l PT 81 3b 3a 3c 3d 3e 3g 3g 3i 3m 3m II I IV III + – + ?[...]