Specifications

Levels

MIC IN

-60 dBu to -10 dBu nominal,

 

maximum level +12 dBu

LINE IN

-40 dBu to +10 dBu nominal,

 

maximum level +32 dBu

 

(balanced)

STEREO LINE IN

-15 dBu to +15 dBu nominal,

 

maximum input level +22 dBu

MAXIMUM GAIN

+76 dB, MIC IN to MAIN OUT,

 

balanced

 

+80 dB, MIC IN to MONITOR

 

OUT, balanced or unbalanced

CHANNEL PEAK LED ON:

6 dB below channel clipping

METER:

Peak type

 

-24 dB to PK (+18 dB over

 

reference at MAIN OUT, 6 dB

 

before output clipping)

MAIN OUT LEVEL (1/4" phone jacks) (when meter is at 0 VU)

 

+4 dBu (1.24 volts)

 

into a balanced load

 

-2 dBu into an unbalanced load

MAIN OUT LEVEL (phono jacks)

-10 dBV (.316 volts) unbalanced

MAXIMUM OUTPUT LEVEL

+22 dBu unbalanced, +28 dBu

 

balanced (6 dB above "PK"

 

segment of main meter)

MONITOR OUT LEVEL

Same as above, but variable

 

following MONITOR/PHONES

 

control

INSERT/DIRECT OUT (tip)

Unity gain

INSERT IN (ring)

Maximum level +22 dBu

HEADROOM:

23.5 dB above nominal output

Impedance

MIC IN

50-150 Ω nominal source

 

impedance (presents 4 k Ω

 

balanced load impedance)

LINE IN

600 Ω-2 k Ω nominal

OUTPUTS (MAIN, AUX and

(>20 k Ω load impedance)

 

MON):

150 Ω unbalanced,

 

300 Ω balanced

 

1.1 k Ω

 

at -10dBV MAIN OUTS

Page 55
Image 55
Alesis 12R manual Levels, Impedance