User manual BEHRINGER B212

[. . . ] B212/B215 User's manual Version 1. 1 May 2006 EUROLIVE EUROLIVE B212/B215 IMPORTANT SAFETY INSTRUCTIONS DETAILED SAFETY INSTRUCTIONS: 1) Read these instructions. CAUTION: To reduce the risk of electric shock, do not remove the top cover (or the rear section). No user serviceable parts inside; refer servicing to qualified personnel. 7) Be sure to mount your speakers on a solid, stable and level base or stand. [. . . ] A list of distributors can be found in the support area of our website (www. behringer. com/support). Registering your purchase and equipment with us helps us process your repair claims quicker and more efficiently. Thank you for your cooperation! ATTENTION! When several loudspeakers are wired in parallel the overall impedance Z ges to be handled by the power amp can be calculated, as shown below, from the individual impedance values of the connected speakers: Your amplifier may be damaged if the actual impedance drops below its input impedance. Please make sure that the calcualted total impedance Z ges is not smaller than the minimum impedance specified for your amplifier. OPTIMAL OPERATION We have developed the B212/B215 for use in a wide range of possible applications. Of course, the sound of your loudspeakers depends on the acoustic characteristics of the room/space in which they are being used. The following chapters of this manual will give you information about getting the most out of your EUROLIVE speakers. 2. CONNECTIONS 3. 1 HF drivers High frequencies are the segment of the audio spectrum responsible for clarity and speech intelligibility. These frequencies are the easiest ones to locate, but at the same time they are also the easiest ones to "obstruct. " Therefore, we recommend positioning your speakers so that the HF drivers are located slightly above the height of the audience. This guarantees the best possible dispersion of high frequencies and considerably higher intelligibility. 3. 2 How to prevent feedback Always place the "front of house" speakers ahead of the microphones (from the audience's perspective), and never behind. Use professional floor monitors or an in-ear monitoring system to hear the stage performers. 3. 3 How to avoid feedback when working with record players (DJ applications) Fig. 2. 1: Connections (B212 and B215) The B212/B215 features two Neutrik® Speakon®compatible speaker inputs which are wired in parallel. You can alternatively connect one of the connectors to the output on your power amp and tap into the signal from the amp once again on the second connector, in order to, for example, feed this signal into an additional loudspeaker. The pin designation of the speaker is pins 1+ and 1-. In applications with record players, bass feedback can occur. Therefore, stick to the following rule of thumb: the power rating of your amp should be roughly twice the speaker load capacity. A speaker rated at 200 Watts continuous performance can easily be powered by an amp rated at 400 Watts output power. An optimal addition to your speaker system would be the BEHRINGER EUROPOWER EP1500 power amp, for example. 5. 1: Full-range stereo operation 5. 2 Using several B212/B215 loudspeakers For larger rooms, you can connect several B212/B215 speakers. 4. 3 Fuses We do not recommend the use of fuses with audio applications. Damage to loudspeakers can be the result of high peak signals and high output power. However, fuses can only offer protection from one of these two factors, and never from both. Additionally, fuse resistors are sometimes nonlinear, leading to distortion and unpredictable overdriving. [. . . ] Any repair or opening of the unit carried out by unauthorized personnel (user included) will void the warranty. If an inspection of the product by BEHRINGER shows that the defect in question is not covered by the warranty, the inspection costs are payable by the customer. Products which do not meet the terms of this warranty will be repaired exclusively at the buyer's expense. BEHRINGER will inform the buyer of any such circumstance. [. . . ]