Model 740 Spectral Processor User`s Manual

I

NORME DI SICUREZZA – IMPORTANTE

Questa apparecchiatura è stata costruita in accordo alle norme di sicurezza IEC 65. Per una perfetta sicurezza ed al fine di evitare eventuali rischi di scossa êlettrica o d'incendio vanno osservate le seguenti misure di sicurezza: o o o o

Assicurarsi che il selettore di cambio tensione sia posizionato sul valore corretto.

Assicurarsi che la portata ed il tipo di fusibili siano quelli prescritti dalla casa costruttrice.

L'apparecchiatura deve avere un collegamento di messa a terra ben eseguito; anche la connessione rete deve avere un collegamento a terra.

Il cavo di alimentazione a corredo dell'apparecchiatura deve essere collegato come segue:

Filo tensione Marrone

Neutro Blu

Massa Verde/Giallo enhance. The selected signals then pass on to the summing stage where they are added to the original untreated signal.

The EQUALIZATION section is similar to a three-way loudspeaker crossover network. Low, Mid and High controls set the amount of boost in their respective bands while two crossover controls set the crossover frequencies between the Low, Mid, and High bands.

Source Noise Reduction

The Spectral Processor boosts low-level signals while leaving highlevel signals relatively unchanged. It can be thought of as an “audio magnifying glass” which “magnifies” detail in selectable areas of the spectrum.

A side effect of this “magnification” is that some of the details that are magnified may be undesirable -- the most common unwanted detail which may be revealed is noise.

For this reason each channel contains a “source-noise reduction” or

“SOURCE NR” section. This SOURCE NR section uses a sliding-band technique that can reduce noise present in the input signal by up to 12 dB. Selectable high-frequency and low-frequency side-chain filters are also provided to prevent unwanted signals from entering the low level processing stage.

30

METER

THRESHOLD

8 BAND

PROCESSOR

EQ

HIGH

MID

LOW

+

SOURCE-NOISE

REDUCTION

+

IN

SIDECHAIN

OUT

INPUT

Audio Path

Control Path

SPECTRAL PROCESSOR BLOCK DIAGRAM (ONE CHANNEL)

OUTPUT

MAIN