NAD 412 User Manual

412

AM/FM Tuner

• 24 preset stations (12 FM, 12AM)

• 25kHz tuning steps

• NAD link

• Blend function

The NAD 412 has evolved from the award winning 402. The 402 was named "Best Tuner, 1994" by "What
Hi Fi". Improvements include a new high clarity display and a re-designed chassis.

The NAD 412 is a superlative product and it out-performs many other tuners that cost far more.
Employing high quality components in it's simple circuit topology give the unit (and it's predeccesor)
the noise free, low distortion performance that have made NAD tuners famous. Only the most essential
functions are employed resulting in an uncluttered front panel of a product that is simple to use.

24 stations (12 FM, 12AM) can be entered in the preset mode. They are stored in a non volatile memory
which allows the preset stations to remain in memory even if the unit is unplugged from the mains
supply.

Unlike most other tuners, the 412 tunes in 25kHz increments. This, coupled with crystal oscillator
controlled digital frequency synthesis makes for precise tuning and enables the user to fine tune to their
desired stations with ease. A centre tune LED indicates that the 412 is accurately locked to the
transmitted signal.

The SEARCH mode allows the 412 to tune to the nearest strong station, up or down the band, whilst the
TUNE mode allows rapid scanning through the band. In both modes the software "wraps" the frequency
band around allowing you to skip directly from the top of the band to the bottom or vice versa.

When attempting to listen to weak stations, sometimes the background noise can become annoying and
spoil the listeners enjoyment of the programme. The BLEND function reduces this noise whist still
retaining adequate stereo separation.
NAD link is provided, enabling the 412 to be remotely controlled by another NAD product that is also
fitted with NAD link and which has an IR sensor.

Specifications - NAD 412
FM tuner section

Usable sensitivity 1.5µV
50dB quieting Mono 2.5µV

Stereo 30.0µV

60dB quieting Mono 7.0µV

Stereo 100µV
Capture ratio (45dBf) 5dB
IF rejection 75dB
AM supression 54dB
Selectivity, alternate channel 78dB
Subcarrier suppression (19kHz and 38kHz) 60dB
THD Mono 1KHz 50% mod. 0.2%

Stereo L-R 1KHz 50% mod. 0.3%

Stereo L+R 1KHz 50% mod. 0.2%

Signal to noise ratio (65dBf IHF weighted) Mono 73dB

Stereo 70dB
Frequency response (30Hz - 15kHz) ±0.7dB
Channel separation (1kHz) 40dB

AM tuner section

Usable sensitivity 7µV
Selectivity 19dB
Image rejection 36dB
Signal to noise ratio (1mV input) 45dB
THD (30% mod., 1mV input) 2%
IF rejection 46dB

Physical Specifications

Dimensions (W x H x D) 435 x 76 x 295mm
Net weight 3.6kg
Shipping weight 4kg
Power consumption 15W

NOTE: NAD reserves the right to change specifications or design at any time without notice. All specifications are those in effect at time of printing.