Behringer SHARK DSP110 Manuel utilisateur

SHARK® DSP110

Userss Manual

Version 1.2 April 2001

www.behringer.com

ENGLISH

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SHARK DSP110

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. Read the

manual.

SAFETY INSTRUCTIONS

CAUT ON: To reduce the risk of electrical shock, do not remove

the cover (or back). No user serviceable parts inside;

refer servicing to qualified personnel.

WARN NG: To reduce the risk of fire or electrical shock, do not

expose this appliance to rain or moisture.

DETAILED SAFETY INSTRUCTIONS:

All the safety and operation instructions should be read before the appliance is operated.

Retain Instructions:

The safety and operating instructions should be retained for future reference.

Heed Warnings:

All warnings on the appliance and in the operating instructions should be adhered to.

Follo instructions:

All operation and user instructions should be followed.

Water and Moisture:

The appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a

wet basement, or near a swimming pool etc.).

Ventilation:

The appliance should be situated so that its location or position does not interfere with its proper ventilaton.

For example, the appliance should not be situated on a bed, sofa rug, or similar surface that may block the

ventilation openings: or placed in a built-in installation, such as a bookcase or cabinet that may impede the

flow of air through the ventilation openings.

Heat:

The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other

appliances (including amplifiers) that produce heat.

Po er Source:

The appliance should be connected to a power supply only of the type described in the operating instructions

or as marked on the appliance.

Grounding or Polarization:

Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.

Po er-Cord Protection:

Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed

upon or against them, paying particular attention to cords and plugs, convenience receptacles and the point

where they exit from the appliance.

Cleaning:

The appliance should be cleaned only as recommended by the manufacturer.

Non-use Periods:

The power cord of the appliance should be unplugged from the outlet when left unused for a long period of

time.

Object and Liquid Entry:

Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

Damage Requiring Service:

The appliance should be serviced by qualified service personnel when:

- The power supply cord or the plug has been damaged; or

- Objects have fallen, or liquid has been spilled into the appliance; or

- The appliance has been exposed to rain; or

- The appliance does not appear to operate normally or exhibits a marked change in performance; or

- The appliance has been dropped, or the enclosure damaged.

Servicing:

The user should not attempt to service the appliance beyond that which is described in the Operating

nstructions. All other servicing should be referred to qualified service personnel.

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SHARK DSP110

1. INTRODUCTION

Thank you very much for expressing your confidence in B HRING R products by

purchasing the SHARK DSP110.

+This manual first describes the terminology used, so that you can fully

understand the DSP110 and its functions. Please read the manual carefully

and keep it for future reference.

1.1 The concept

With the SHARK DSP110 you purchased a device that combines an automatic Feedback

Destroyer using the ingenious search algorithms of our F DBACK

D STROY RPRO DSP1124P, a variable Delay Line (adjustable in msec, feet and

meter), a ULN (Ultra-Low Noise) microphone pre-amp with Phantom Power, an

automatic Noise Gate, a variable Low Cut filter and a Compressorall in one ultra-

rugged and compact case. Still, the SHARK can be operated intuitively and expanded

to a multi-channel system using another four SHARKs and an optionally available 19"

rack mount kit. The SHARKs 24-bit A/D and D/A converters guarantee a precise

reproduction of your program material.

High volume levels and the use of ever more sophisticated monitoring systems with

a multitude of speaker cabinets have led to a greater potential risk of feedback loops

in sound reinforcement systems. So far, audio engineers have been using conventional

1/3-octave equalizers to suppress unwanted feedback. However, the individual filters

of such an Q, with their relatively wide bandwidth, have quite an impact on the sound

image. With the B HRING R SHARK (minimum bandwidth: 1/60 of an octave) you

are now free to either choose the trial and error method to suppress feedback with

graphic equalizers, or to assign this task to the DSP110, so that you can give your

music your undivided attention. Using extremely narrow-bandwidth filters, the

SHARKDSP110 eliminates only unwanted feedback, without affecting your music.

1. INTRODUCTION

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SHARK DSP110

Fig. 1.1: Typical feedback loop

1.2 Before you begin

Your SHARK 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 carton and its contents for any signs of physical damage, which may have

occurred during transit.

+If the unit is damaged, please do not return it to B HRING R, but notify

your dealer and the shipping company immediately, otherwise claims for

damage or replacement may not be granted. Shipping claims must be made

by the consignee.

The optionally available rack mount kit allows you to mount your B HRING R SHARK

in a standard 19" rack, together with another four SHARKs. The rack mount kit requires

2U of rack space.

1. INTRODUCTION

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SHARK DSP110

Be sure that there is enough air space around the unit for cooling and please do not

place the SHARK on high-temperature devices such as power amps, etc. to avoid

overheating.

Please use the enclosed power supply to connect the unit to the mains. The supply

complies with all applicable safety standards.

+Please note that all units must be grounded properly. For your own safety,

you should never remove any ground connectors from electrical devices

or power cords or render them inoperative.

Further information can be found in chapter 3 INSTALLATION.

As a standard the audio inputs and outputs of the B HRING R SHARK DSP110 are

fully balanced. If possible, connect the unit to other devices in a balanced configuration

to allow for maximum interference immunity. The automatic servo function detects

unbalanced connections and compensates the level difference automatically (6dB

correction).

1. INTRODUCTION

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SHARK DSP110

1.3 Control elements

Fig. 1.2: Front panel control elements of the DSP110

1The C IP EVE METER shows you whether or not the digital circuitry is

driven correctly. Any corrections can be made with the CLIP L V L control

. Be sure that the CLIP L D wont light up.

2The C IP EVE control lets you adapt the internal gain optimally to the digital

circuitry. If gain is too high (CLIP L D lights up), raise the CLIP L V L value by

turning the control to the right (and vice versa). Thus, you can shift the operating

level upwards/downwards.

+The CLIP L V L control does not affect the input/output levels, but adapts

the audio signal as optimally as possible to the threshold of the digital

circuitry.

3These five EDs symbolize the units of the parameters that can be adjusted on

the display .

1. INTRODUCTION

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SHARK DSP110

4The 4-digit DISP AY reads the absolute values of the adjusted parameters.

5The FB-D FI TER STATUS EDs display the status of each of the 12 individual

filters. The SHARK uses four different filter modes:

sDisabled filters (which can be re-enabled with the ACTIV button). When a

filter is off, its L D is not lit.

sFree filters which automatically search for feedback frequencies and whose

activity is shown by a flashing L D.

sSet filters which can be reconfigured as free (searching) filters, when all filters

are currently in use.

sPermanently set filters which must be R S T to be reconfigured as free filters.

Once a filter has been set, its L D lights up.

6The DE AY button allows you to adjust the Delay Line time. Press the button

several times to either choose msec, feet or meter. The last unit selected will be

stored and recalled next time you use the D LAY function. The control L D

lights up while you are making your entries. The setting range is from 0 to

2,500.0 msec, 0 to 2,818.2 feet, and 0 to 859.00 meters. When you are using

high values, the 4-digit display reads the last figure only when you start editing

with the UP/DOWN buttons. xample: for a value of 1,500.0 msec, the display

reads 1500 when you press the D LAY button, and 500.0 when you start

editing. In this way, you can use extremely small steps when editing parameters.

+To speed up the selection, briefly press the key located next to the UP or

DOWN key. The selection speed will be increased with each additional key

press. This function can be used for all parameter edits.

7The DOWN button lowers the parameter values shown in the display .

8The UP button raises these parameter values.

1. INTRODUCTION

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SHARK DSP110

9The OW CUT button lets you enter the high pass filters cut-off frequency

(20 to 150 Hz). When set to OFF the filter is inoperative. The control and Hz

L Ds light up while you are entering a value. Use the UP/DOWN buttons to

edit. Pressing the LOW CUT button for a longer time (please wait, until all

five parameter L Ds light up) enables the keypad lock feature which prevents

inadvertent editing of parameters and settings. When the keypad lock is enabled,

the LOW CUT keys control L D starts flashing.

10 Use the GATE button to adjust the threshold of the internal Noise Gate (-96 dB

through -44 dB). When set to OFF, the Noise Gate is inoperative. The control

L D of the GAT button lights up while you are entering a value. Pressing the

GAT button for a longer time (please wait, until all five parameter L Ds light

up) enables the GAT L ARN function, which automatically sets the Noise

Gate threshold by analyzing the program material and adjusting the value

accordingly (value detected plus 2 dB). In GAT L ARN mode, the GAT keys

control L D starts flashing. As long as the L D flashes, the detected value is

read on the display, when the L D stops flashing, the value is raised by +2 dB.

11 The COMPRESSOR button gives you access to two parameters that let you

adapt the DSP110s Compressor function to the program material. Press the

button once to adjust the D NSITY parameter, which controls the compression

density from 0 (no processing) to 100 (maximum compression). Press the

COMPR SSOR button a second time to adjust the SP D parameter which

controls the Compressors attack and release times from 10 to 1000 msec. The

msec L D lights up as soon as you select the SP D parameter.

12 The FILT R key allows you to set the feedback detection sensitivity within a

range from 1 (no sensitivity) through 100 (full sensitivity). The default value is

50. The control L D lights up during data entry. Briefly press the FILT R key a

second time to edit the maximum attenuation of the FB-D filter (from -3 dB

through -48 dB in steps of 3). Pressing the FILT R key longer (please wait, until

all five parameter L Ds light up) activates the FILT R L ARN function, which

automatically searches for feedback frequencies and assigns free filters to the

frequencies found. Now you can enter the number of filters (standard: 9) to be

used for permanent feedback suppression. Although the remaining filters are

also used to eliminate feedback frequencies, they are released once new

feedback occurs. Pressing the FILT R key once again activates the FILT R

L ARN function.

1. INTRODUCTION

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SHARK DSP110

+When both FILT R L D and display stop flashing, the FILT R L ARN function

has been completed. Press the FILT R key to cancel the function. After a

short delay, the unit returns to the FILT R menu.

The FILT R L ARN function generates short feedback-causing signals that

are sent back to the DSP110s input, where feedbacks are detected and

suppressed. The FILT R L ARN function is an useful tool for live concerts that

prevents filters from being released prematurely. Fixed filters can only be

reconfigured as free, searching filters by means of a R S T. In normal mode,

which is activated after power-up, set filters are automatically released one after

the other, when free filters are needed to search and destroy feedback

frequencies.

+To ensure that the FILT R L ARN function works properly, the short

feedback-causing signals are output with a level of -18 dB below digital

maximum. However, the feedback caused during the FILT R L ARN

procedure will be limited by the compressor to -30 dB below digital

maximum. Please note that considerable volume levels can still occur,

which is why you should use the FILT R L ARN function only before the

concert/event begins.

13 nable the ACTIVE button to set inoperative filters to automatic search mode.

When this button is up (control L D is off), those filters are inoperative which

have not yet found a feedback frequency. Pressing the ACTIV button for a

longer time (please wait, until all five parameter L Ds light up) enables the

R S T function. All filters will be reset, i.e. set to automatic search mode.

1. INTRODUCTION

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SHARK DSP110

Fig 1.3: Rear panel control elements and connectors of the DSP110

14 This is the SHARKs balanced X R output.

15 This is the SHARKs balanced X R input.

16 The MIC GAIN control adjust the input signal gain, when the INPUT L V L

switch has been pressed (position: MIC). To adjust microphone levels you

can use the CLIP L V L indicator, by setting the CLIP L V L control to mid-

travel position. Please make sure that the CLIP L D will not light up.

17 Use the POWER SUPP Y CONNECTOR to hook up the SHARKs external

power supply.

18 This is the SHARKs balanced JACK output, which carries the same signal as

the XLR output.

19 The OUTPUT EVE switch controls the reference level provided by the outputs

of the DSP110. Possible values are: +4 dBu or microphone level.

1. INTRODUCTION

DATA-MANFULL_DSP110_ENG_Rev. E.p65 20.04.01, 15:4510

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