Nagra 4.2 Portable Analogue Audio Instructions Manual

N A G R A     4.2 
 
 
 
PORTABLE ANALOGUE AUDIO 
 
TAPE RECORDER 
  
 
 
 
 
INSTRUCTION MANUAL 
 
(KSA code No. 20 04 004 151) 
 
 
 
 
 
 
 
Kudelski S.A. 
NAGRA Tape Recorder Manufacturer 
CH-1033 Cheseaux / SWITZERLAND 
phone (021) 732 01 01 Copyright reserved for all countries 
telex 459 302 nagr ch February 1991 Edition Printed in Switzerland 
telefax (021) 732 01 00 
http://www.nagraaudio.com 
 
 
  

 
 
 
 
 
 
 
 
NAGRA, KUDELSKI, NEOPILOT, NEOPILOTTON 
NAGRASTATIC, NAGRAFAX 
are registered trade - marks, property of 
KUDELSKI S.A. 
NAGRA Tape Recorders Manufacture 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NAGRA / KUDELSKI certifies that this instrument was thoroughly inspected and tested prior to 
leaving our factory and is in accordance with the data given in the accompanying test sheet. 
 
We guarantee the products of our own manufacture against any defect arising from faulty 
manufacture for a...

CHAPTER  I   INSTRUCTION  MANUAL 
 
 
 
TABLE  OF  CONTENTS 
 
 
 
 
1.1 INTRODUCTION..............................................................................................................7 
1.2 CONTROLS: DESCRIPTION AND USE...........................................................................10 
FRONT  PANEL........................................................................Error! Bookmark not defined. 
1. TAPE / DIRECT SWITCH (LINE AND...

47. LOUDSPEAKER..........................................................................................................18 
48. POWER PACK............................................................................................................19 
49. FIXTURE FOR CARRYING STRAP/HANDLE................................................................19 
50. CASE FIXING SCREW.................................................................................................19 
51. PLATE SHOWING RECORDING AND...

Theory..........................................................................................................................36 
Variation of the High Frequency Level with Azimuth Error.................................................36 
Secondary Maxima........................................................................................................37 
Orientation of the Heads on the Nagra 4.2.......................................................................37...

DIMENSIONS AND WEIGHT.............................................................................................52 
POWER  SUPPLY.............................................................................................................52 
TAPE TRANSPORT..........................................................................................................53 
WOW AND FLUTTER........................................................................................................53 
AMPLIFIER...

1.1 INTRODUCTION 
 
The NAGRA 4.2 was introduced originally in 1971. It is a portable 6.35mm (1/4) mono analogue 
audio tape recorder designed for high quality recording having radio, cinema and television 
applications. 
 
Many mechanical and electronic modifications have been made to the machine since its release, to 
adapt it according to modern day requirements. Despite all these modifications, the machine 
remains remarkably similar to the original.  
 
The Nagra 4.2 can be delivered in two...

1.2 CONTROLS: DESCRIPTION AND USE 
 
 
FRONT PANEL 
 
 
1. TAPE / DIRECT SWITCH (line and phones) 
 
When in TAPE position, the signal is reproduced directly from the tape. 
 
When in DIRECT position, there are two possibilities: 
 
A. When recording, the signal is available before arriving on the tape. 
B. When playing back, the signal may be adjusted by means of the level control and 
corrected by filter switch (13). 
 
2. TAPE / DIRECT (snap switch) 
 
This switch affects the meter in the same way...