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NEDSP1962-KBD

Price: £139.96 (£116.63 net)
New NEDSP1962-KBD amplified DSP noise cancelling loudspeaker retrofit module (NEDSP1062-KBD replacement)
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The NEDSP1962-KBD amplified DSP noise cancelling module can be retrofitted inside many types of extension speaker or older style radios and transceivers.  It incorporates unique Digital Signal Processing (DSP) technology which can identify speech from within a noisy signal and can provide up to 40 dB of noise reduction and 65 dB of tone reduction.  The module comes pre-wired and with an on-board power amplifier enabling it to be easily incorporated into existing equipment.  All the module functions are controlled by the pre-wired keyboard switch assembly.   The NEDSP1962-KBD uses a  powerful programmable DSP audio processing chip with DSP noise cancelling technology inside. This high−performance chip delivers exceptional sound quality and incorporates a full audio signal chain with 16−bit A/D converters and digital interfaces utilising fully flexible digital processing architecture.  The audio amplifier stage is provided by a Texas Instruments 7W Mono Class-D audio power amplifier chip which is 94% efficient, eliminating the need for heatsinks.

Specification:

DC Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Units

Supply Voltage

 

10

16

18

V

Quiescent Current

Vs = 10 V to 18 V

5.4

 

7

mA

Quiescent current with DSP On, no load and no signal

Vs = 10 V to 18 V

70

 

80

mA

Current at Maximum Audio

   

400mA

   

 Audio Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Units

Output Power

Vs = 10 V to 18 V

5

 

7

W

Input Sensitivity 4 Ω Load

f = 1kHz

Po = 0.5 W

 

100

 

mV

(p-p)

Input Sensitivity 4 Ω Load

f = 1kHz

6 Watts

 

400

        

mV

(p-p)

3dB BW

Po =1 W, DSP=Off

RL = 8 Ω

200

 

5000

Hz

Distortion

f = 1kHz, Pout =7 W, RL = 8Ω

   

0.3

%

Input Resistance

When operating

 

62

 

Voltage Gain

f = 1kHz

   

16

 

Efficiency

f = 1kHz Po = 0.5 W

 

>80

 

%

 

Optional extras: PSU12-2A-WW