Vintage Revolution Acoustic Box II, Owner'S Manual

9

Compressor/Mixed channel Ch1+Ch2 EQ

The new Acoustic Box 

II 

comes with an optical compressor and a 3 band  

parametric eq.  The mixed channel is the signal obtained by adding the    
processed channels Ch1 + Ch2 after the compression. Each individual  

channel contribution is set by the 

LEVEL

 control knob (see p.8 and p.9 )

Compressor 

The optical Compressor provide up to 16dB compression. It is engaged where 
the Comp button is engaged. Otherwise the Compressor is bypassed.

The level of Compression can be set with the 

SENS

 knob. If Sensitivity is set to  

minimum no compression (0dB) is performed. Once the desired compression 
level is set, use the 

MAKEUP

 gain knob to adjust the output level. The LED indi-

cator on the compressor turns on when compression of 10 dB is obtained.

Phase ALL button (øAll)

When the 

ALL

 button is pressed, it allows for 180° phase shift between 

(Ch1+Ch2) and the acoustic signal. This button is handy for controlling the 
feedback and for getting a good bass response of the blended signal on your 
acoustic sound.

Parametric Equaliser

To equalize the mixed channels the Abox uses a 3 band parametric eq 

Low-

Mid-High

 (40Hz - 125Hz, 250Hz - 1KHz, 3.5KHz - 12KHz respectively) by correcting 

/-12dB designed to help you adapt on any situation of sources and 
combination of inputs.

Master mute/Tuner mode

By Pressing the 

Mute

 button the preamp mutes all outputs and gets into tuning  

mode as indicated on the display. The tuner receives signal measurement only  
from Ch1 therefore Ch2 can’t be used for tuning. Play your string and tune 
until you see the tuner highlighting the circle in the middle of the display. Once 
the string is tuned, hold your strings until the tone on display clears up.  

LEVEL AMP

The 

LEVEL AMP

 knob allows you to control the output signal level that is    

directed into your AMP via the unbalanced Jack (

AMP

 output).

LEVEL XLR L and XLR R

The LEVEL

 XLR L 

and 

XLR R

 knobs allow you to control the output signal level  

connected to your PA/MIXER via XLR balanced cables. Abox II comes with two  

XLR knobs since it controls stereo effects (both internal and external).  

Those knobs control as well the 

Headphones 

output. 

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Compressor-EQ-Tuner-Mute-Outputs