Manuale d’uso / di manutenzione del prodotto SNR2000 del fabbricante Behringer
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DENOISER ® SNR2000 Version 2.3 J u n e 2 0 0 2 Users Manual www.behringer.com ENGLISH.
2 DENOISER SNR2000 This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure voltage that may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature.
3 DENOISER SNR2000 FOREWORD Dear Customer, Welcome to the team of DENOISER users and thank you very much for expressing your confidence in BEHRINGER products by purchasing the SNR2000.
4 DENOISER SNR2000 SNR2000 DENOISER ® Professional and all-purpose single-ended noise reduction system s TAC (Transient Attack Control) dynamic filters respond accurately to signals with fast a.
5 DENOISER SNR2000 T ABLE OF CONTENTS 1 . INTRODUCTION . . ................................................................................................................... 6 1. 1 The design concept ..................................................
6 DENOISER SNR2000 1 . INTRODUCTION Thank you very much for expressing your confidence in BEHRINGER products by purchasing the BEHRINGER DENOISER SNR2000. Electrical noise is still one of the most unpleasant problems in the field of electro-acoustics.
7 DENOISER SNR2000 1. 2 Before you begin Your DENOISER was carefully packed in the factory and the packaging is designed to protect the unit from rough handling. Nevertheless, we recommend that you carefully examine the packaging and its contents for any signs of physical damage, which may have occurred during transit.
8 DENOISER SNR2000 1.3 .1 Front panel Fig. 1.2: Front panel control elements 1 The IN/OUT switch activates the relay and, consequently, the corresponding channel. The unit is bypassed when the switch is not depressed. 2 By depressing the COUPLE switch you will tie channel 1 and 2 together for stereo tracking.
9 DENOISER SNR2000 15 FUSE HOLDER / VOLTAGE SELECTOR . Please make sure that your local voltage matches the voltage indicated on the unit, before you attempt to connect and operate the DENOISER. Blown fuses may only be replaced by fuses of the same type and rating.
10 DENOISER SNR2000 Fig. 2.1: Operation of the dynamic filter With a low-frequency input signal present, the dynamic filter will reduce any mid or high-band noise as well as any disturbing noise tails.
11 DENOISER SNR2000 Fig. 2.2: Comparing the BEHRINGER T AC filter circuitry and the conventional RMS characteristic curve 2.2.1 SENSITIVITY control This control determines the sensitivity of the filter. If the input level exceeds the value adjusted with the SENSITIVITY control, the dynamic filter begins to open.
12 DENOISER SNR2000 2.2.4 AUTO switch The AUTO switch allows to automatically control release time and cut off frequency of the TAC filter. Thus, by depressing the AUTO switch, the RELEASE and CUT OFF controls are deactivated. Release time and cut off frequency of the filter are now automatically derived from the input signal.
13 DENOISER SNR2000 Fig. 2.3: The function of an expander 2. 4 The IRC expander of the DENOISER The response characteristics of conventional expanders tend to cut the signal abruptly and the result is generally unacceptable, since the effect is clearly audible.
14 DENOISER SNR2000 2.4 .1 THRESHOLD control The THRESHOLD control of the expander defines the operating level. It stretches across a very wide range and therefore applies to all working levels. Input levels above the adjusted threshold point do not experience any change.
15 DENOISER SNR2000 2. 5 The COUPLE function The couple switch links channel 1 and channel 2. This includes each channels expander detection and filter detection circuits.
16 DENOISER SNR2000 We recommend the following control settings: Controls Settings IN/OUT s witch IN EXPANDER sw itch IN THRESHOLD c ontrol -50 dBu RELEASE control 2 second s RATIO c ontrol 3:1 FILTER sw itch IN SENSITIVIT Y switch -30 dBu AUTO swi tch IN T ab.
17 DENOISER SNR2000 Fig. 3.2: Noise reduction during recording If the mixer features a line level insert (either pre or post equalizer), the DENOISER should be inserted here. Fig. 3.3: Noise reduction using the line insert 3.2. 3 Reducing noise on subgroups, monitor and effects buses For this application there are several options: 1.
18 DENOISER SNR2000 Fig. 3.4 : Noise reduction in the effects bus 3.2 .4 Noise reduction for effects devices Effects devices such as flangers, phasers, distortion or chorus units, delay and reverb devices, compressors, equalizers, exciters, etc. can considerably increase the overall noise level.
19 DENOISER SNR2000 Fig. 3.6: Noise reduction on keyboards + Please note that low level signal sources such as guitars must be pre-amplified beforehand, as the BEHRINGER DENOISER only processes line level signals (-10 dBV to +10 dBu). 3.2 .7 Reducing noise in P.
20 DENOISER SNR2000 Fig. 3.8: Noise reduction in Hi-Fi systems The BEHRINGER DENOISER can be used for: s disc and tape recordings s video and audio cassette playback purposes s TV reception s radio reception 4.
21 DENOISER SNR2000 The usable dynamic range of electro-acoustic equipment is limited to both the low end and the high end. The thermal noise of the electrons in the components results in an audible basic noise floor and thus represents the bottom limit of the transmission range.
22 DENOISER SNR2000 The noise gate is the simplest form of an expander: in contrast to the expander, which continuously attenuates a signal below the threshold, the noise gate cuts off the signal abruptly. In most applications this method is not very useful, since the on/off transition is too drastic.
23 DENOISER SNR2000 4. 7 The single-ended principle In contrast to conventional noise reduction systems using compressors and expanders, the DENOISER is purely a single-ended system.
24 DENOISER SNR2000 Fig. 5.1: Different plug types 6. SPECIFICATIONS Analog inputs Connectors XLR and 1/4" TRS Type R F filtered, servo balanced input Impedance 80 kO h ms balanced Nominal operating level -10 dBV to +4 dBu (switchable) Max.
25 DENOISER SNR2000 6 . SPECIFICATIONS System specifications Bandwidth 5 H z t o 100 kHz, +0/-3dB No i se > 104dBu, fully off T H D 0.02% typ. @ +4dBu, 1 kHz, Gain 1 Crosstal k < -85dBu Expander section Threshold v ariable (-40 to +20 dBu) Release v ariable (0.
26 DENOISER SNR2000 7 . WARRANTY 7. WARRANTY § 1 WARRANTY CARD/ONLINE REGISTRATION To be protected by the extended warranty, the buyer must complete and return the enclosed warranty card within 14 days of the date of purchase to BEHRINGER Spezielle Studiotechnik GmbH, in accordance with the conditions stipulated in § 3.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Behringer SNR2000 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Behringer SNR2000 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Behringer SNR2000 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Behringer SNR2000 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Behringer SNR2000, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Behringer SNR2000.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Behringer SNR2000. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Behringer SNR2000 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
