Behringer EPA900 Manual - Page 6

6 EUROPORT EPA900 User Manual LEFT (L) / RIGHT (R) BAL Via these connectors, you can connect stereo line-level sources (e.g., keyboard, CD player, external mixers, notebook sound card). Either the cinch jacks or the ¼" jacks can be used, but not both at the same time. VOICE CANCELLER (Channel 7/8) The VOICE CANCELLER function enables voice to be filtered out of stereo signals. This function is useful for karaoke applications with a player (CD/MP3 player, etc.). 3.3 Channel strips Use the BAL control of the mono channels to adjust the position of the signal within the stereo image (left/right) or for both mono paths. Turn the control: • completely to the left to hear the signal only on the left side, that is the LEFT/MAIN path. • completely to the right to hear the signal only on the right side, that is the RIGHT/MAIN path. Positions between these settings will result in a proportionate signal allocation between LEFT/MAIN and RIGHT/MAIN. Each channel strip is equipped with an equalizer section, an effects control, and one control each for signal routing and volume control. The BAL control determines the levels of a stereo source's left and right input signals in relation to each other. Turn the control: • completely to the left to hear only the left signal component of the stereo source on the LEFT/MAIN path. • completely to the right to hear only the right signal component of the stereo source on the RIGHT/MAIN path. Positions between these settings will result in a proportionate signal allocation of the left/right signal component between LEFT/MAIN and RIGHT/MAIN. CLIP When lit up, the CLIP LED indicates that the corresponding channel is being overdriven. If this LED lights up regularly, you need to reduce the level of the respective channel using the LEVEL control and/or the PAD switch. LEVEL The LEVEL control is used to set the volume of the channel signal. If the CLIP LED is lit up, the level has to be reduced using this control. Fig. 3.3: Channel strip for a mono channel 3.4 Additional connections The EPA900 is equipped with additional inputs and outputs as well as a footswitch connector. TREBLE/BASS The equalizer section comprises these two controls. With the TREBLE control, you can modify the high frequencies, and with the BASS control the low frequencies. Rotate the control knob: • clockwise to boost the frequency range by max. 15 dB. • counterclockwise to cut the frequency range by max. 15 dB. ◊ If you use the equalizer section to boost frequencies, the signal level of the channel increases. If the CLIP LED lights up, you need to reduce the level using the corresponding LEVEL control. EFFECTS With the EFFECTS control, you can specify the portion of the channel signal to be routed to the effects unit. The further clockwise you turn the control knob, the greater the effect that is applied to the signal. Turning the knob counterclockwise as far as possible results in a signal with no effects. Fig. 3.4: Connectors for additional devices STEREO AUX IN The STEREO AUX IN sockets are designed as separate ¼" jacks and as a stereo minijack. You can connect additional devices with adjustable line levels (e.g., other mixers, MD player) here. The signal is sent directly to the output busses, with no further adjustment possible. Use either the minijack or the two ¼" jacks, not both types at the same time. For mono sources, use the LEFT connector. EFFECTS FOOTSW The EFFECTS FOOTSW socket is used to connect a footswitch. You can switch the effect on and off with the foot switch. SUB OUT You can connect an active subwoofer to the SUB OUT socket. TAPE OUT You can connect a 2-track recorder (DAT, MD, etc.) to the TAPE OUT sockets. The two TAPE OUTs carry the output bus signals.