6
3.1. Audio input connections
H-Line 1
CD Deck
Phono 1
Turntable
L-Line 1
Computer, Tape players…
H-Line 2
CD Deck
Phono 2
Turntable
Micro 2
Microphone
H-Line 3
CD Deck
Phono 3
Turntable
L-Line 3
Computer, Tape players…
- Phono Inputs:
Phono Turntables must be fitted with a magnetic cartridge with nominal output level between -55dBV and -25dBV
(1,77 to 56mV). The PHONO inputs (28) of the NUO3 have a high headroom (margin before saturation) and it can
handle higher output cartridges than what is usual. These inputs are supplied with a nominal input sensitivity of
-40dBV (10mV). The NUO3 features a ground connection post to which the ground cable of the turntable should be
connected.
- Line Inputs:
Given the important level differences between usual LINE and CD sources, the NUO3 provides specialized inputs
for each source. The sensitivity of the HIGH LINE (27) input is 0dBV (1V), while the LOW LINE (29) sensitivity is
-10dBV (316mV). CD Players, DAT, MP3, and DVD Audio should be connected to the HIGH LINE input. Tape
players, tuners and some production devices (samplers, sequencers) should be connected to the LOW LINE input.
- Microphone Inputs:
The MIC input (31) is ready for a nominal input level of -50dBV (3.16mV) and is equipped with a XLR3 connectors.
The MIC ATT switch on the rear panel (30) allows a 20 dB attenuation on the input sensibility, so that it is changed
from –50 to –30dB (3.16 to 31.6 mV). The connection of balanced signals is as follows:
Hot or direct signal
>
Pin 2
Cold or inverted signal
>
Pin 3
Ground
>
Pin 1
Low impedance (200 to 600
Ω
) monophonic microphones must be used. In case of working with an unbalanced
connection Pin 1 and Pin 3 must be short-circuited. The NUO3 features a Phantom power supply for the
connection of condenser microphones. A set of internal jumpers allow you to inhibit the phantom power for the
microphone. The default setting of these jumpers on the NUO3 is "Phantom ON". See configuration diagram.