5FEEDBACK DESTROYER PRO FBQ2496 User Manual

1.Introduction

The FBQ2496 is the fastest (>0.2 sec.) and the only 96 kHz Feedback Suppressor in this market price segment. Using an ultra-fast feedback detection algorithm, it automatically and “intelligently” locates up to 20 feedback frequencies per channel and sets extremely narrow notch filters to “destroy” them, leaving the remainder of the signal virtually untouched.

Easy does it: with the “Set-and-Forget” default setting plus the Panic button, your FEEDBACK DESTROYER can be up and running in no time! The auto mode continuously monitors the mix, resetting programmed filters automatically, while the manual mode allows individual setting of up to 40 fully parametric filters with frequency, bandwidth and gain adjustment. Open MIDI architecture means that future software updates and flexible communication with digital equipment are a no-brainer. With its various modes you can master just about any live sound situation or use it as a creative sound-shaping tool.

1.1 Before you get started

1.1.1 Shipment

Your FBQ2496 was carefully packed at the assembly plant to assure secure transport. Should the condition of the cardboard box suggest that damage may have taken place, please inspect the unit immediately and look for physical indications of damage.

◊Damaged equipment should NEVER be sent directly to us. Please inform the dealer from whom you acquired the unit immediately as well

as the transportation company from which you took delivery. Otherwise, all claims for replacement/repair may be rendered invalid.

◊Please always use the original packaging to avoid damage due to storage or shipping.

◊Never let unsupervised children play with the FBQ2496 or with its packaging.

◊Please dispose of all packaging materials in an environmentally friendly fashion.

1.1.2 Initial operation

Be sure that there is enough space around the unit for cooling. To avoid overheating, do not place the FBQ2496 on top of power amps or near radiators, etc.

◊Blown fuses must be replaced by fuses of the same type and rating. Please refer to the “SPECIFICATIONS” for further details.

The mains connection is made using the enclosed power cord and a standard IEC receptacle. It meets all international safety certification requirements.

◊Please make sure that all equipment is properly grounded at all times. For your own safety, never remove or disable the ground conductor of the unit or of the AC power cord.

1.1.3 Online registration

Please register your new BEHRINGER equipment right after your purchase by visiting http://behringer.com and read the terms and conditions of our warranty carefully.

Should your BEHRINGER product malfunction, it is our intention to have it repaired as quickly as possible. To arrange for warranty service, please contact the BEHRINGER retailer from whom the equipment was purchased. Should your BEHRINGER dealer not be located in your vicinity, you may directly contact one of our subsidiaries. Corresponding contact information is included in the original equipment packaging (Global Contact Information/European Contact Information). Should your country not be listed, please contact the distributor nearest you. A list of distributors can be found in the support area of our website (http://behringer.com).

Registering your purchase and equipment with us helps us process your repair claims more quickly and efficiently.

Thank you for your cooperation!

2. What Causes Feedback?

EUROLIVE B1220

UB2442FX-PRO

EUROPOWER EP1500

Fig. 2.1: How a feedback loop is created

A feedback loop is created when a microphone signal is first reproduced on an amplifier, and is then picked up again by the same microphone (with the same phasing). Then, it is amplified and reproduced again. This feedback loop may, under certain circumstances, keep on occurring and could escalate out of control.

With P.A. applications, there are two major types of setups in which feedback can occur:

•Front mix (also called F.O.H. = “front of house”) refers to the mix being created when a signal from a mixing console is amplified by one or more power amplifiers and is fed into loudspeakers facing the audience.

•Monitor mix refers to the mix that also originates in the mixing console but ends up driving one or more stage monitors. Unlike FOH speakers, a stage monitor makes the music program audible to individual musicians.

◊Please bear in mind that high volume levels can damage both your hearing and your equipment. Be sure to always select an appropriate volume level.