Behringer UB1002, UB1202 2.2 Stereo channels, PAN, BAL, GAIN, CLIP, LEVEL, LOW CUT, LINE IN

7EURORACK UB1202FX/UB1002FX User Manual

GAIN

Use the GAIN control to adjust the input gain. This control should always be turned fully counterclockwise whenever you connect or disconnect a signal source to one of the inputs.

The scale has 2 different value ranges: the first value range (+10 to +60 dB) refers to the MIC input and shows the amplification for the signals fed in there.

The second value range (+10 to -40 dBu) refers to the line input and shows its sensitivity. The settings for equipment with standard line-level signals (-10 dBV or +4 dBu) look like this: While the GAIN control is turned all the way down, connect your equipment. Set the GAIN control to the external devices’ standard output level. If that unit has an output signal level display, it should show 0 dB during signal peaks. For +4 dBu, turn up GAIN slightly, for -10 dBV a bit more. Tweaking is done using the CLIP LED.

E Q

All mono input channels include a 3-band equalizer. All bands provide boost or cut of up to 15 dB. In the central position, the equalizer is inactive.

The upper (HIGH) and the lower band (LOW) are shelving filters that increase or decrease all frequencies above or below their cut-off frequency. The cut-off frequencies of the upper and lower band are 12 kHz and 80 Hz respectively.

The MID band is configured as a peak filter with a center frequency of 2.5 kHz. Unlike shelving filters, the peak filter processes a frequency range that extends upwards and downwards around its middle frequency.

LOW CUT

in addition, the mono channels are equipped with a steep LOW CUT filter (slope at 18 dB/oct., -3 dB at 75 Hz) designed to eliminate unwanted low-frequency signal components. These can be noises created by hand-held microphones, subsonic noise or plosive sounds created by highly sensitive microphones.

FX

FX sends enable you to feed signals via a variable control from one or more channels and sum these signals to a bus. The bus appears at the console’s FX send output and can be fed from there to an external effects device. The return from the effects unit is then brought back into the console on the stereo channels. Each FX send is mono and features up to +15 dB gain.

As the name suggests, the FX sends of the EURORACK mixing consoles are intended to drive effects devices (reverb, delay, etc.) and are therefore configured post-fader. This means that the mix between dry signal and effect remains at the level determined by the channel’s aux send, irrespective of the channel fader setting. If this were not the case, the effects signal of the channel would remain audible even when the fader is lowered to zero. With UB mixing consoles, the channel fader is called LEVEL control.

In the UB1002FX/UB1202FX, the FX send is routed directly to the built-in effects processor. To make sure that the effects processor receives an input signal, you shouldn’t turn this control all the way to the left (-∞).

PAN

The PAN control determines the position of the channel signal within the stereo image. This control features a constant-power characteristic, which means the signal is always maintained at a constant level, irrespective of position in the stereo panorama.

LEVEL

the LEVEL control determines the level of the channel signal in the main mix.

◊Attention: Since the FX path for the effect processor is connected post-fader, the LEVEL control has to be turned up in order to get this channel’s signal to the effects processor!

CLIP

The CLIP-LED’s of the mono channels illuminate when the input signal is driven too high, which could cause distortion. If this happens, use the GAIN control to reduce the preamp level until the LED does not light anymore.

2.2 Stereo channels

LINE IN 3/4		LINE IN 5/6		LINE IN 7/8		LINE IN 9/10
MONO	L	MONO	L	MONO	L	MONO	L
BAL		BAL		BAL		BAL
OR		OR		OR		OR
UNBAL	R	UNBAL	R	UNBAL	R	UNBAL	R

0 0

	+15		+15
	+4		+4
	–10		–10
	BAL		BAL
L	R	L	R
	0		0
	LEVEL		LEVEL
	+15		+15
	3/4		7/8
	0		0
	+15		+15
	+4		+4
	–10		–10
	BAL		BAL
L	R	L	R
	0		0
	LEVEL		LEVEL

+15+15

5/6 9/10

Fig. 2.2: Connectors and controls on the stereo channels

LINE IN

Each stereo channel has two balanced line level inputs on 1/4" connectors for left and right channels. If only the connector marked “L” (left) is used, the channel operates in mono. The stereo channels are designed to handle typical line level signals. Both inputs will also accept unbalanced connectors.

FX

The FX send of the stereo channels functions similar to that of the mono channels. However, since the FX send bus is mono, a mono sum is first taken from the stereo input before it is sent to the FX bus.

BAL

The BAL(ANCE) control determines the levels of left and right input signals relative to each other before both signals are then routed to the main stereo mix bus. If a channel is operated in mono via the left line input, this control has the same function as the PAN control used in the mono channels.