Instruction/ maintenance manual of the product SNR2000 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.
An important point after buying a device Behringer SNR2000 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Behringer SNR2000 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Behringer SNR2000 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Behringer SNR2000 you will learn all the available features of the product, as well as information on its operation. The information that you get Behringer SNR2000 will certainly help you make a decision on the purchase.
If you already are a holder of Behringer SNR2000, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Behringer SNR2000.
However, one of the most important roles played by the user manual is to help in solving problems with Behringer SNR2000. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Behringer SNR2000 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
