ABOUT THE C 720BEE
NOTES ON INSTALLATION
Your NAD C720BEE should be placed on a firm, level surface. Avoid placing the unit in direct sunlight or near sources of heat and damp. Allow adequate ventilation. Do not place the unit on a soft surface like a carpet. Do not place it in an enclosed position such a bookcase or cabinet that may impede the air-flow through the ventilation slots. Make sure the unit is switched off before making any connections.
The RCA sockets on your NAD C720BEE are colour coded for convenience. Red and white are Right and Left audio respectively.
Use high quality leads and sockets for optimum performance and reliability. Ensure that leads and sockets are not damaged in any way and all sockets are firmly pushed home.
For best performance, use quality speaker leads of 16 gauge (1.5mm) thickness or more. If the unit is not going to be used for some time, disconnect the plug from the AC socket.
Should water get into your NAD C720BEE, shut off the power to the unit and remove the plug from the AC socket. Have the unit inspected by a qualified service technician before attempting to use it again.
DO NOT REMOVE THE COVER, THERE ARE NO USERSERVICEABLE PARTS INSIDE.
Use a dry soft cloth to clean the unit. If necessary, lightly dampen the cloth with soapy water. Do not use solutions containing benzol or other volatile agents.
QUICK START
1Connect the speakers to the rear Speaker terminals and sources to the relevant rear input sockets.
2Plug in the AC power cord.
3Press the VACATION button on the back of the C720BEE.
4Press the POWER button to turn the NAD C720BEE on.
5Press the required input selector.
REAR PANEL CONNECTIONS
ATTENTION!
Please make all connections to your C720BEE receiver with the unit powered off or unplugged. (It is also advisable to power-down or unplug all associated components while making or breaking any signal or AC power connections.)
1-2 FM & AM ANTENNA: The supplied wire "dipole" FM antenna will connect to the FM connector using the supplied "balun" adapter. It will usually work best when mounted on a vertical surface such as a wall, with arms fully outstretched forming a horizontal "T" perpendicular to the origin point of the signal. Experiment with placement and orientation of to yield the clearest sound and lowest background noise. In areas of difficult FM reception an external FM antenna can yield dramatic gains in quality; consult your NAD audio specialist or a professional antenna installer.
The AM loop antenna supplied with the C720BEE (or a suitable replacement) is required for AM reception. Open the clip terminal levers insert the wire and close, ensuring that the lever locks the wire in place. Testing different positions for the antenna may improve reception; vertical orientation will usually produce the best results. Antenna proximity to large metal objects (appliances; radiators) may impair reception, as will attempts to lengthen the wire to the loop.
NOTE:
An external AM antenna can improve long-distance reception substantially; consult your NAD audio specialist or a professional antenna installer. Do not connect anything other than a loop antenna to the AM ANTENNA terminal. Do not remove the AM loop antenna.
3 SPEAKERS A & B - Speaker terminals for speakers with an impedance of 4 ohms or more. Connect the right speaker to the terminals marked 'R +' and 'R-' ensuring that the 'R+' is connected to the '+' terminal on your loudspeaker and the 'R-' is connected to the loudspeaker's '-' terminal. Connect the terminals marked 'L+' and 'L-
'to the left speaker in the same way. Always use heavy duty (16 gauge; 1.5mm, or thicker) stranded wire to connect loudspeakers to your NAD C720BEE. 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.
BARE WIRES AND PIN CONNECTORS
Bare wires and pin sockets should be inserted into the hole in the shaft of the terminal. Unscrew the speaker terminal's plastic bushing until the hole in the screw shaft is revealed. Insert the pin or bare cable end into the hole and secure the cable by tightening down the terminal's bushing. Ensure bare wire from the speaker cables does not touch the back panel or another socket. Ensure that there is only 1/2" (1cm) of bare cable or pin and no loose strands of speakers wire.
POWERDRIVE
To meet the diverse requirements of high current drive and high dynamic power, our patented PowerDrive amplifier circuit will build further on our reputation for amazingly effective power. 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. This is a further development and refinement of our renowned Power Envelope circuit, utilized by NAD in the 80's and 90's. PowerDrive differs from Power Envelope in that it offers greater amplifier stability and low impedance drive capability, resulting in less distortion when driving real speakers with real program material.
4 SWITCHED AC OUTLET - The AC power cord of another component may be plugged into this accessory outlet. Components plugged into this outlet will be switched On and Off by the VACATION SWITCH on the rear panel.
NOTE:
The total power consumption of any components connected to the AC outlets may not exceed 100 Watts.
5 AC line cord - Plug the AC power cord into a live AC wall socket. Make sure all connections have been made before connecting to mains.
6.VACATION SWITCH ON/OFF The VACATION switch is the master on/off control for the amplifier. When the switch is in the ON state the amplifier is in standby as shown by the amber LED above the power switch on the front panel. If the amplifier will not be used for an extended period of time, switch the VACATION switch to the OFF position.
