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NaTCH Engineering  

 

NaTPmP

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Email:

web@NaTCH.co.uk

01728 723306

Phone:

01728 723306

Fax:

0871 247 4524

Pester:

07970 865730

2 Station Terrace

Framlingham

WOODBRIDGE

IP13 9EF  UK

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Thanks to Lady KRJ for this pic The NaTPmP is a microphone pre-amplifier and phantom power supply specifically designed for use with loudspeaker production testing equipment.  There is 12V phantom powering for the microphone and the voltage gain can be set in the range 240 to 4, ie 0dB to -37dB.  The pre-amplifier is compatible with the NaTKiT1 and particularly suited to the Audio-Technica ATM33a microphone.

The NaTPmP has a substantial die-cast box.  Mains connection is by an IEC connector and signal connections are by 3 pin XLR connectors.  The fuse is externally accessible but gain setting is by an internal DIL switch to prevent accidental adjustment in use.  The unit's input is electronically balanced but the output is 'single ended'.

INSTALLATION
Installation is merely a matter of setting the gain using the internal 4 way DIL switch.

Please note that the male XLR connector is the pre-amplifier's output and it is NOT balanced.  The pin identity is pin 2 live (positive polarity) and, 1 and 3 return (ie screen, shield or earth).

SWITCH POSITIONS

1

2

3

4

Gain

dB

off

off

off

off

240

0

ON

off

off

off

93

-8

off

ON

off

off

39

-16

ON

ON

off

off

31

-18

off

off

ON

off

16

-24

ON

off

ON

off

14

-25

off

ON

ON

off

12

-26

ON

ON

ON

off

11

-27

off

off

off

ON

6

-32

off

ON

off

ON

5

-34

ON

off

ON

ON

4

-37