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Page 4 

 

DSP mode

4 Levels

8 Levels

OFF

RED

ORANGE

ON

GREEN

GREEN

 

4. 

Installation 

 
The speaker is supplied with a mounting bracket that can be left on in case of permanent 
fixing, or removed altogether depending on personal choice. 
 
Connect the 3.5mm mono lead supplied to the extension speaker socket of your 
equipment and the 4mm black and red plugs into the corresponding red and black sockets 
on the rear of the speaker. 
 
Connect the fused DC power lead supplied to a power supply capable of providing 12 - 
18VDC @ 300mA. (The centre pin of the 2.1mm power connector is positive and the lead 
with the white stripe is positive), or use a suitable mains plug-in 12V DC power supply 
(300mA). 

 

5. 

Speaker Operation 

 
Once installed and connected, apply power to both the audio source and the speaker.   
 
Press the power/bypass switch located in the speaker front grill.  When power is applied to 
the speaker, the LED will flash and turn red or orange depending on whether 4 or 8 levels 
of noise cancelling have been selected.  The power button switches the module on and off.  
When the module is switched off, the audio bypasses the module, so the circuit will 
behave as if the module isn’t present and the unit becomes a passive extension speaker.  

 
Note: 

If the power is on and the DSP is switched off, the audio still passes through the 

DSP, but without any signal processing. 
 

6. 

DSP Function button 

 

This button is used to set the following: 

• 

DSP filter on/off 

• 

DSP level select 

• 

4 or 8 levels of noise cancellation select 

• 

Demonstration mode select 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

Table 1. LED mode indication.

Содержание Noise Away

Страница 1: ...Desk Top Noise Away Amplified DSP noise cancelling Speaker User Manual bhi Ltd DSP noise cancellation products for radio and voice communications 1067 105D iss B...

Страница 2: ...bhi Ltd reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of bhi Ltd to notify any person of such revision or changes Table...

Страница 3: ...cancelling unit capable of producing up to 2 5Watts RMS audio power The unit requires an audio input signal of between 80 and 500mW level and a DC supply of between 12 and 18 Volts 300mA The unit is...

Страница 4: ...y 300mA 5 Speaker Operation Once installed and connected apply power to both the audio source and the speaker Press the power bypass switch located in the speaker front grill When power is applied to...

Страница 5: ...elease the button to select the desired level mode The module will return to normal operation after this The colour of the LED will indicate the mode of operation 8 Noise reduction levels 4 or 8 level...

Страница 6: ...on for 1 5 seconds then off for 1 5 seconds It will then move to the next level and repeat the process This mode is particularly effective at demonstrating the different DSP levels A lternatively pas...

Страница 7: ...aker Check that the power connector on your power supply is suitable for the power socket on the speaker 2 1mm centre positive Check that you have switched your radio communication equipment on and th...

Страница 8: ...n questions otherwise most queries can be resolved over the telephone If not we will arrange with you to have your unit sent back to us for analysis repair or replacement if within 12 months from date...

Страница 9: ...at the circuit board is accessible 4 Connect your radio to the speaker connect the power to the speaker and switch the radio on With the speaker in bypass mode power off turn the radio volume to your...

Страница 10: ...Page 10 bhi Ltd PO Box 318 Burgess Hill West Sussex RH15 9NR England Telephone 44 0 845 217 9926 Fax 44 0 845 217 9936 Email sales bhi ltd com Web www bhi ltd com 1072 105D iss B...

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