NAD C 372 Bi-Amping, Powerdrive, Remote Control Handset Figure, Power On And Off Buttons, Mute

ENGLISH FRANÇAIS DEUTSCH ESPAÑOL ITALIANO PORTUGUÊS SVENSKA

BI-AMPING

Some loudspeakers have separate connection terminals for the LF (Low Frequency) and HF (High Frequency) sections of the speaker. This facility allows to "Bi-Amp" these speakers, where a separate power amplifier is used for the LF and HF section, which may improve overall sound quality.

The NAD C 372 provides two sets of pre amplifier outputs (PRE OUT 1

&2) to facilitate the connections for Bi-Amping. Moreover, the level from PRE OUT 2 can be reduced in relation to PRE OUT 1 to accommodate power amplifiers with different gain (amplification factor).

To set up the C 372 with power amplifiers first decide which power amplifier has the highest gain. This is easily done by comparing the loudness level of the power amplifiers in an identical system (keep the volume control at the same level; use the same source and speakers). The amplifier that plays louder has the highest gain (note that this does not need to be the more powerful amplifier of the two). Connect the amplifier with highest gain to the PRE OUT 2 (No. 10) sockets; the other power amplifier to the PRE OUT 1 (No. 8) sockets. From the maximum level position (0dB), use the VOLUME PRE OUT 2 control (No. 11) to reduce the output level of PRE OUT 2 so that the volume level of both power amplifiers is exactly matched.

NOTES: The gain of the NAD C 272 power amplifier is identical to that of the C 372's built-in power amplifier (in fact, the C 272 and C 372's power amplifier section are almost identical). When combined with the NAD C 272 for Bi-Amping, leave the PRE-OUT 1 connected, with the links provided, to MAIN-IN. Connect the C 272 to the PRE-OUT 2 output. Set the VOLUME PRE-OUT 2 control to its maximum position.

The provided links to connect from PRE-OUT 1 to MAIN-IN can also be used to connect from PRE-OUT 2 to MAIN-IN, should the C 372's power amplifier have the highest gain. Always turn the C 372 and external power amplifiers off before connecting or disconnecting anything from Pre-Out and to Main-In sockets.

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.

REMOTE CONTROL HANDSET (FIGURE 3)

The Remote Control handset handles all the key functions of the NAD C 372 and has additional controls to remotely operate NAD Tuners, Cassette and CD machines. It will operate up to a distance of 16ft (5m). Alkaline batteries are recommended for maximum operating life. Four

AAA(R 03) batteries should be fitted in the battery compartment at the back of the Remote Control handset. When replacing batteries, check that they have been put in the right way round, as indicated on the base of the battery compartment. Please refer to previous sections of the manual for a full description of individual functions.

When a command from the remote control is received, the Standby/ protection indicator will blink. Note that the indicator may also blink when receiving commands not necessarily for the C 372 but for other components in the system.

POWER ON AND OFF BUTTONS

The NAD C 372 remote has a separate On and Off button. This can be particularly useful to keep components within a system "in sync": This way all components will switch to stand-by when Off is pressed or switch to operating mode when On is pressed, instead of some components switching On when the amplifier is switched to Stand-by. (Note that the other components have to be capable of responding to the separate On and Off commands as well). Press the ON button to switch the unit from Stand-by to the operating mode; The Stand-by indicator (Fig. 2; No. 2) will turn from amber, to red, then to green and the indicator for the last selected input will blink and light up. Press the OFF button to switch the unit to the Stand-by mode: The Stand-by indicator will light up amber.

SPEAKERS A & B

These buttons perform the same function as those on the front panel. The Speakers A and B buttons engage or disengage the speakers connected to respectively the Speakers A and Speakers B terminals on the rear panel. Press A to switch the speakers connected to the speaker A terminals On or Off. Press B to switch the speakers connected to the speaker B terminals On or Off. The indicator directly over the buttons shows the status of speakers A and B.

MUTE

Press the MUTE Button to temporarily switch off the sound to the speakers and headphones. Mute mode is indicated by the active input indicator on the front panel flashing. Press MUTE again to restore sound. Mute does not affect recordings made using the Tape outputs but will affect the signal going to the Preamp outputs (Pre-Out 1 &2).

INPUTS

The input selector buttons perform the same functions as the buttons labelled the same on the front panel.

MASTER VOLUME

Press the MASTER VOLUME or buttons to respectively increase or decrease the loudness level. Release the button when the desired level is reached. The motorised Volume Control on the front panel will indicate the level set. The Master Volume buttons do not affect recordings made using the Tape outputs but will affect the signal going to the Pre-amp outputs (Pre-Out 1 &2).

TUNER CONTROL

(for use with NAD Tuner)

TUNE or scans respectively higher or lower station frequencies for both AM and FM.

PRESET or selects respectively higher or lower number station preset.

CD PLAYER CONTROL

(for use with NAD CD/DVD Player)

engages Pause engages Stop

engages Play, toggles between Play and Pause or engages Track skip; Press once to respectively go to the next track or to return to start of current or previous track.

engages CD drawer Open/Close; Press once to open the CD drawer then once again to close the CD drawer and start playback. The TAPE/TUNER - CD switch applies tape controls to the transport keys when in the TAPE/TUNER position, and applies CD controls to the transport keys when in the CD position.

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