NAD T 977: IDENTIFICATION OF CONTROLS

1  input  

· 

Each of the seven independent power amplifiers within the T 977 

has its own signal input connector. 

· 

Connect the output from a preamplifier or processor to this set of 

inputs.  

For optimum heat dissipation in an AV surround system, the following 

audio channel allocations are recommended: 

Channel 1 = Front Left speaker

Channel 2 = Surround Left speaker

Channel 3 = Surround Back Left speaker

Channel 4 = Center speaker

Channel 5 = Surround Back Right speaker 

Channel 6 = Surround Right speaker

Channel 7 = Front Right speaker

NOTES

·  Always turn OFF the T 977 and other components in the system before 

connecting or disconnecting anything to the INPUT sockets. 

·  Before switching ON the T 977 from standby mode for the first time, 

make sure all input level controls are set to minimum (MIN) level 

position. This prevents inadvertently beginning a session at excessive 

volume.  

2  input level control 

· 

The T 977 is equipped with separate input level controls for each 

channel. 

· 

Before switching ON the T 977 from standby mode for the first time, 

make sure all input level controls are set to minimum (MIN) level 

position.

level matching

In a surround sound or system with more than one set of speakers, 

differences in levels can occur due to varying inefficiencies among the 

speakers. In case your preamplifier or processor also has individual trims 

for each channel, set these to neutral or mid position (usually marked 

as 0dB). Adjust the INPUT LEVEL CONTROL so that the speakers driven 

by the T 977 have the correct level compared to the other speakers, 

judging from your listening position.

extended volume control range

Many systems have so much voltage gain that the speakers (or your 

ears) are overdriven at any volume control setting higher than 11 or 

12 o’clock. As a result you are confined to using only the lower half 

of the volume control’s range, where adjustments are imprecise and 

where channel balance errors tend to be greater. 

If the input level is reduced, you can turn up the volume control of 

your processor or preamplifier, making more effective use of its range. 

(Suggestion: Adjust the input level controls so that your preferred 

maximum sound levels usually occur at about 2 or 3 o’clock on the 

volume control.) As an added benefit, this procedure suppresses any 

noise produced by the preamplifier’s high level circuitry (e.g. any 

residual hum or hiss that does not go away when the Volume is turned 

down).

IDENTIFICATION OF CONTROLS

rear panel

ATTENTION!

Ensure that the T 977 is unplugged before making any connections. It is also advisable to power-down or unplug all associated components while making 

or breaking any signal or AC power connections.

© NAD  T 977

FUSE

MAINS  IN

SPEAKER

SPEAKER

SPEAKER

SPEAKER

SPEAKER

SPEAKER

SPEAKER

INPUT

+12V TRIGGER IN

ON              OFF        

CH

AN

NE

L 7

  F

RO

NT

  R

CH

AN

NE

L 6

CH

AN

NE

L 5

CH

AN

NE

L 4

CH

AN

NE

L 3

CH

AN

NE

L 2

  S

UR

R  

R

  S

UR

R-B

 R

  C

EN

TE

R

  S

UR

R-B

 L

  S

UR

R L

CH

AN

NE

L 1

  F

RO

NT

 L

  FRONT  R

  SURR  R

  SURR-B R

  CENTER

  SURR-B L

  SURR L

CHANNEL  1

  FRONT L

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

CHANNEL  7

CHANNEL  6

CHANNEL  5

CHANNEL  4

CHANNEL  3

CHANNEL  2

INPUT

INPUT

INPUT

INPUT

INPUT

INPUT

SOFT

CLIPPING

1

2

8

3

4

5

6

7

6

ENGLISH

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ССКИЙ

T977_eng_OM_v04.indd   6

17/04/2012   9:28am