Behringer SRC2000 Bedienungsanleitung PDF herunterladen (Seite 9)

EURORACK MX1804X

1.2.4 Rack mounting the MX1804X

Enclosed in the shipping box you will find a 19" rackmount kit. If you want to make your MX1804X a rack mixer,

loosen the screws from the side panels and use them to fix the rack ears (note, that there is a left and a right

one).

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

MX1804X on high temperature devices such as power amplifiers etc. to avoid overheating.

+ When switched on, parts of the desk and the power supply unit will become very warm, which

is normal during operation.

2. OPERATION

2.1 Mono input channel

Each channel comes with a balanced line input on 1/4" TRS connector , and an XLR microphone input

. Phantom powering for the use of condenser microphone is switchable from the rear panel with switch

. The gain circuit has an unusually wide range, obviating the need for mic/line switching. The crucial

operating levels +4 dBu and -10 dBV are clearly and accurately legended.

+ When using the microphone input please make sure nothing is connected to the same channel’s

line input, and vice versa.

2.1.1 Input level setting

Channel input level is determined by the GAIN control . Use the PFL/SOLO switch to bring the

channel input onto the left and right bargraph meters respectively. This also sends the solo/PFL-ed signal

to the left and right speakers.

For level-setting (as opposed to localized listening) choose to use the mono PFL bus rather than the post-fader

(post-channel Pan) stereo solo bus (CHANNEL MODE switch UP).

Solo/PFL never interrupts the mix at the main recording outputs. It follows that aux sends must also be

unaffected, since they contribute directly to the main mix.

In addition to switchable PFL/solo metering , a channel LED illuminates when a channel is going into

overload. You do not want the peak light to come on except very intermittently during a take or a mix. If it does

light persistently, reduce input gain.

There is a steep low-cut filter , slope at 18 dB/oct., -3 dB at 75 Hz, for reducing floor rumble, explosives,

woolly bottom end, etc.

2.1.2 Equalizer

All mono input channels are fitted with three-band EQ and the above mentioned switchable low-cut filter for

eliminating unwanted subsonics. All three bands have up to 15 dB of cut and boost, with a centre detent for off.

The upper and lower shelving controls have their frequencies fixed at 12 kHz and 80 Hz respectively.

On the MX1804X, the midrange control is semi-parametric with a peaking response, Q fixed at 1 octave,

sweepable from 100 Hz to 8 kHz .

2.1.3 Aux sends

Both aux sends are mono and post-EQ. Aux send 1 can be taken from a point before or after the channel

fader, i.e. pre or post by switch . Aux send 2 is always wired post-fader. You can use the

1/4" connector to receive the signal of aux send 1. The control of aux 2, which is called FX, you can send

signals from all channels to the internal effects processor. Of course, you can use the aux send 2 also to head

for external effects devices. For that you can use the FX send and the FX return jack on the top of the

mixer. As a result the internal effects processor is no longer provided with an input signal.

For almost all effects send purposes, you will want aux sends to be post-fader, so that when a fader level is

2. OPERATION

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