NAD T 977: IDENTIFICATION OF CONTROLS

3 Speaker

· 

The T 977 is equipped with special high-current binding-post 

speaker terminals. Connect the respective SPEAKER FRONT L, FRONT 

R, CENTER, SURR R, SURR L, SURR-BL and SURR-BR channels to their 

corresponding loudspeakers. Make sure the “+” (red) terminal and 

“-” (black) terminal are connected to the corresponding “+” and “-” 

terminals of the loudspeaker. Use extra care to ensure that no stray 

wires or strands cross between posts or terminals at either end.  

· 

Always use heavy duty (16 gauge; 1.5mm, or thicker) stranded 

wire to connect loudspeakers to your NAD T 977. The high-current 

binding post terminals can be used as a screw terminal for cables 

terminating in spade or pin sockets or for cables with bare wire 

ends.

· 

The T 977 is designed to produce optimum sound quality when 

connected to speakers with impedances within its operating range. 

Please make sure that all the speakers are rated 4 ohms minimum 

per speaker.

NOTE

Use stranded wire of at least 16 gauge (AWG). Connections to the T 977 

can be made with banana plugs (120V version only) or by using bare 

wire or pins. Use the transverse hole through the post for bare-wire or 

pin connections. By loosening the terminal’s plastic nut, make a clean, 

neat connection and re-tighten carefully. To minimize the danger 

of short-circuit, ensure that only 1/2-inch of exposed wire or pin is 

employed when connecting.

4  ground terminal

· 

The T 977 is provided with a GROUND terminal on the rear panel. 

This terminal is connected directly to the chassis of the T 977. 

· 

Use this terminal to properly ground the T 977. A ground lead wire 

(not supplied) or similar can be used to connect the T 977 to ground 

via this ground terminal. After insertion, tighten the terminal to 

secure the lead.

5  Soft clipping 

· 

Enables NAD’s proprietary Soft Clipping circuitry on all channels.  At 

“ON” position, Soft Clipping gently limits the output of the T 977 to 

minimize audible distortion should the amplifier be over-driven. 

· 

Soft Clipping may simply be left ON at all times to reduce the 

likelihood of audible distortion from excessive volume settings. 

However, for critical listening and to preserve optimum dynamics, 

you may wish to defeat it by setting this switch to “OFF” position.

· 

The SOFT CLIPPING indicator on the front panel will illuminate when 

the amplifier is in Soft Clipping mode.

6  +12v trigger in

· 

The +12V Trigger input allows the T 977 to be switched remotely 

from standby mode to ON and vice-versa by ancillary equipments 

such as a preamplifier, AV processor, etc. The controlling device 

must be equipped with a 12V trigger output to use this feature. 

WARNING

The front panel Standby button is disabled as long as the male plug 

of the mono cable (with or without +12V DC) is connected to T 977’s 

+12V TRIGGER IN. Unplug the mono cable for the T 977 to be normally 

switched ON (or back to standby mode) using the front panel STANDBY 

button.

7  fuSe holder

· 

In the unlikely event a fuse needs to be replaced, unplug the mains 

power cord from the wall.  Then, remove all connections from the 

amplifier. Use a flathead screw driver or similar to open the fuse 

holder via the slot indicated.  With the screw driver in place, push 

and turn counterclockwise to open the fuse holder.   

· 

Only replace the fuse with the same type, size, and specification.

IMPORTANT NOTICE

Do not use any substitute fuses of different types or with different ratings 

or values.  Failure to observe this precaution may cause damage to the 

amplifier circuits and may create a fire hazard and/or defeat the safety 

built into the amplifier and may void the warranty.

8  ac mainS input

· 

The T 977 comes supplied with a separate detachable mains power 

cord.  Before connecting the plug to the mains powers source, 

connect firmly first the other end to T 977’s AC Mains input socket.

· 

Connect only to the prescribed AC outlet, i.e., 120V 60 Hz (for 120V 

version models only) or 230V 50 Hz (for 230V version models only).

· 

Always disconnect the mains power plug from the mains power 

source first, before disconnecting the cable from the T 977’s AC 

Mains input socket

POWERDRIVE

The T 977 uses NAD’s proprietary PowerDrive™ amplifier technology for 

all channels to preserve accurate, linear reproduction regardless of the 

loudspeaker. This uniquely efficient power-supply topology provides the 

real-world benefits of high dynamic power that remains uncompromised 

by low-impedance speakers. 

By adding a second high-voltage rail to our well regulated high-current 

power supply, we get an “overdrive” that can nearly double the continuous 

power on a short term dynamic power basis. PowerDrive offers greater 

amplifier stability and low impedance drive capability, resulting in less 

distortion when driving real speakers with real program material.

IDENTIFICATION OF CONTROLS

rear panel

7

ENGLISH

FR

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AIS

ESP

AÑOL

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ALIANO

DEUT

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NEDERL

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T977_eng_OM_v04.indd   7

17/04/2012   9:28am