Cables to Go 8 Manual De Usuario

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A Tour of the MultiMix USB
 
 
In this chapter, you’ll learn all about the MulitMix-8FX’s 
components (except for the digital effects processor, which is 
explained in the next chapter). Please refer to the diagrams as you 
read each section to see which components we’re talking about. 
 
 
Patchbay 
 
At the rear portion of  the top of  the MultiMix 8 USB, you’ll find 
the patchbay. This is where you plug in instruments, signal 
processors, multitrack recorders and other devices. Whatever you 
need to connect to the mixer, this is where it’s done. In the 
following paragraphs, we tell you all about the inputs, outputs, 
switches and knobs you see in this section of  the mixer. 
 
 
 
 
 
 
 
 
 
 
Mic Inputs (Channels 1 – 4)  
 
The MultiMix uses standard XLR-type mic inputs. These provide 
+48V phantom power that you can turn on and off  with the 
Phantom On switch located on the rear of  the mixer. You 
probably will have to turn on the phantom power when you’re 
using most condenser mics, as these usually require the extra 
voltage (unless the mic has its own power source, such as a 
battery). Dynamic and ribbon mics don’t require phantom power 
and are unaffected when the power is on.  
 
These high-quality mic inputs also feature up to 50dB of  preamp 
gain that you can adjust with the Gain knob.  
 
Another useful feature of  these mic inputs is a high-pass filter 
(HPF) that can be turned on and off  with the HPF switch. When 
you activate this switch, all frequencies below 75Hz are cut from 
the signal. This is useful for mic or line signals that don’t have 
much bottom end, such as vocals, snares, cymbals and electric 
guitar. You’ll want to leave this inactivated for instruments like 
basses and kick drums. 
 
Line Inputs (Channels 1 – 4)  
 
The line inputs, marked LINE IN, are balanced 1/4” jacks that 
offer the same 50dB of  preamp gain and the high-pass filter 
provided by the mic inputs (however, phantom power does not 
apply to line inputs). These inputs accept line-level instruments 
such as keyboards and drum machines. If  you find that your 
instrument has a weak line signal, just plug it into channels 1 – 4 
and crank it up with the Gain knob.  
Although chances are your 
microphones will work fine 
with these mic inputs, we 
recommend that you do some 
checking up on the type of 
microphone you’re using, 
especially if it’s one of the 
older vintage models. Verify 
that your microphone 
requires phantom power and 
make sure its output is low 
impedance, balanced and 
floating.  
Always connect your 
microphones before 
activating phantom power. 
Microphones tend to be very 
sensitive, and the sudden 
power surge can do 
permanent damage to the 
mic’s circuitry. It’s also a 
good idea to lower mixer 
levels before you activate 
phantom power. 
  2
 
A Tour of the MultiMix USB
 
 10 
Line Inputs (Channels 5 – 8) 
 
Unlike channels 1 – 4, the line inputs on channels 5 – 8 are stereo 
inputs that have left and right inputs. If  you’re using one of  these 
channels as a mono input, plug your instrument into the left input. 
Channels 5 – 8 don’t have the extra gain found on channels 1 – 4 
because most line-level instruments don’t require the extra boost. 
MIDI and other electronic instruments will work especially well on 
these channels. These inputs are also good for connecting CD 
players or tape decks, as these audio sources don’t require extra 
gain. 
 
PHONE Jack 
 
The headphone jack accepts 1/4” jacks. If  your headphones are 
1/8”, you can find a 1/8” to 1/4” adapter in most electronics 
stores.  
 
AUX RETURNS 
 
These are the 1/4” jacks where you connect the outputs of  an 
external effects processor or other audio source. Each aux return 
gives you 15dB of  gain that can be controlled by the AUX RET A 
and EFFECTS / AUX RET B LEVEL knobs in the mixer’s 
output section. 
 
AUX SENDS 
 
And these is the 1/4” jacks where you connect the lines that are 
going into the input of  an external effects processor. The aux 
sends give you 10dB of  gain that can be controlled in the AUX 
section of  each channel input. 
 
2-TRACK 
 
The 2-TRACK IN and OUT jacks are standard RCA jacks. You’ll 
use the OUTs for mixing to a tape deck or other recorder. With 
the INs you can bring in a signal, which can be monitored and 
even added to the main mix via the 2TK TO MIX switch in the 
master section of  the mixer. 
 
MAIN MIX OUT 
 
These 1/4” jacks are where the signal on the main mix bus leaves 
the mixer. From there you can send it to a recorder or a PA system. 
The level of  this signal is controlled by the MAIN MIX level 
control.  
 
CTRL RM OUT 
 
You can use these 1/4" jacks to send the control room signal to 
the input of  the amplifier driving your monitors or headphones. 
This output usually carries the main mix. However, if  you engage 
the 2TK TO CTRL ROOM switch, the CTRL RM OUT will carry 
the signal present at the 2-TRACK inputs.
 
If you are using an effects 
device with only a mono 
output, plug it into the left 
return of STEREO AUX 
RETURN. It will appear in 
the center of the stereo 
spectrum, and not to the left.