Alesis 12 FireWire Manual De Usuario

 

 

 

In this chapter, you’ll learn all about the MultiMix’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. 

 

 

At the rear portion of  the top of  the MultiMix, 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. 

 

 

 

 

 

 

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. 

 

 

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.