TOA Electronics BA-800 manual Microphone Announcements BA-806 and BA-823

Page 19

(6) Microphone Announcements [BA-806 and BA-823]

Connect a microphone to the microphone input terminal located on the rear panel.

Set the power switch to ON, and confirm that the power indicator lights.

Adjust the microphone volume control.

Making an announcement during tape play triggers an internal microphone-activated muting circuit, and the tape output volume automatically decreases by approximately 20dB. The tape volume automatically returns to a previous level after announcement completion. For the microphone-activated muting circuit, refer to Item below.

[Cautions]

(1)Make sure to set this control to zero when no microphone is connected to the BA-806 or BA-823.

(2)Be sure to set the microphone switch to OFF after announcement completion, because the muting circuit is

activated by ambient noise if the switch is left ON.

(7) Microphone-Activated Muting Circuit [BA-806 and BA-823]

The microphone and AUX 2 inputs are provided with the muting circuit which automatically reduces the tape

output volume and AUX 1 volume by approximately 20dB when a microphone announcement is made through such

inputs. The tape output volume gradually returns to its original level after the announcement is completed.

[Note]: The microphone-activated muting circuit does not work when the microphone volume control is set to

minimum position.

(8) Signal and Peak Indicators [BA-806 and BA-823]

During tape play or microphone announcement, see to it that the peak indicator (red) does not light. If it lights, this indicates that the output is distorted and so, turn down the volume.

The signal indicator (green) lights when a signal is output to the speaker. Check amplifier operation with this indicator.

— 19 —

Page 18 Page 20
Image 19
Page 18 Page 20
Contents Operating Instructions BA-823Harmful interference to radio communications Contents User Precautions Cassette Tapes Nomenclature Link Input Connector Signal Stereo Line Output ConnectorMonaural Line Output Terminal Peak Indicator Red BA-806 Front View Power SwitchTape Volume Control Microphone Volume Control Signal Indicator GreenSpeaker Output Terminal Link Input Terminal Control UseBA-823 Front View Power Switch Link Input Terminal Control BA-800 Connection Examples ConnectionsMicrophone BA-806 Connection ExamplesBA-823 Connection Example Connection to the 25V terminal Speaker Connections BA-823 Timer Connections BA-800, BA-806 and BA-823Stop Operation Operation BA-800, BA-806 and BA-823Playback Playback OperationAGC Circuit BA-800, BA-806 and BA-823 Timer ON/OFF ControlTape Ejection and Loading Microphone Announcements BA-806 and BA-823 Signal and Peak Indicators BA-806 and BA-823Microphone-Activated Muting Circuit BA-806 and BA-823 Alternate A-A-B-B Playback Track Sequence Selection BA-800, BA-806 and BA-823Alternate A-B-A-B Playback Connections Expansion using one BA-800Expansion using two BA-800s Example Playback OperationExample Operation of an Expanded SystemPress the stop button of the component in play mode Timer Connection When Expanded Timer Connection ExampleBlank Skip Function BA-800, BA-806 and BA-823 Fault Indication BA-800, BA-806 and BA-823Demagnetizing the heads Cassette Player Unit CU-800 ReplacementMaintenance Cleaning the head sectionAre weak TroubleshootingMIC BA-803,806 BA-800TOA Corporation
Top Page Image Contents