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5

This product has been designed and manufactured to meet strict safety and qual-
ity standards. It is very important that you are aware of the following installation and 
operation precautions:

 

1.  Read and keep these instructions and heed all warnings

 

You should read all the safety and operating instructions carefully before operat-
ing this apparatus. Retain this manual for future reference and adhere to all warn-
ings in the manual or on the apparatus. 

2.  Water and moisture

 

The presence of electricity near water can be dangerous. Do not use the appara-
tus near water – for example next to a bathtub, a sink, in a wet basement or near 
a swimming pool, etc. 

3.  Object or liquid entry

 

Take care that objects do not fall and liquids are not spilled into the enclosure 
through any openings. Liquid filled objects such as vases should not be placed on 
the apparatus. 

4.  Cleaning

 

Unplug the unit from the mains supply before cleaning. The case should normally 
only require a wipe with a soft, damp, lint-free cloth. DO NOT use paint thinners or 
other chemical solvents for cleaning, which will destroy prints and paintwork. DO 
NOT use alcohol or household cleaning products. DO NOT USE WATER.   

5.  Power sources

 

Only connect the apparatus to a power supply of the type described in the 
operating instructions or as marked on the apparatus, and install the unit near the 
power outlet (socket). Appliance coupler is considered as disconnect device. It 
shall remain readily operable..  

6.  Power-cord protection

 

Power supply cords should be routed so that they are not likely to be walked on, 

bent, stretched or pinched by items placed upon or against them, paying particu-
lar attention to cords, plugs, convenience receptacles and the point where they 
exit from the apparatus. 

7.  Abnormal smell

 

If an abnormal smell or smoke is detected from the apparatus, turn the power off 
immediately and unplug the unit from the wall outlet. Contact your dealer im-
mediately. 

8.  Servicing and maintenance

 

None of the parts inside the enclosure of this apparatus is serviceable by the user. 
DO NOT open the enclosure and DO NOT attempt to modify the internal circuitry. 
All servicing and maintenance beyond what described in this manual should be 
referred to qualified service personnel. 

9.  Damage requiring service

 

The apparatus should be serviced by qualified service personnel when:

•  Objects have fallen onto, or liquid has been spilled into the apparatus, or
•  The apparatus has been exposed to rain, or
•  The apparatus does not appear to operate normally or shows a marked 

change in performance, or

•  The apparatus has been dropped and/or the enclosure damaged.

The lightning flash symbol within an equilateral triangle is intended to alert the 

user to the presence of uninsulated ‘dangerous voltage’ within the product’s 

enclosure that may be of sufficient magnitude to constitute a risk of electric 

shock to persons.

CAUTION: To reduce the risk of electric shock, do not remove cover or back. No user 

serviceable parts inside. Refer servicing to qualified service personnel.

WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to 

rain or moisture.

The exclamation point within an equilateral triangle is intended to alert the 

user to the presence of important operating and maintenance (servicing) 

instructions in the literature accompanying the product.

To reduce the risk of fire or electric shock, unplug the apparatus when there 

is high probability of lightning. 

IMPORTANT SAFETY INSTRUCTIONS

Summary of Contents for Acoustic Box II

Page 1: ...Acoustic box II Owner s Manual Ver 2 1...

Page 2: ...d advice in the preparation of this handbook The close contact with many skilled musicians at the labs of VR and by correspondance has been most inspiring and beneficial in the development of our new...

Page 3: ...8 Compressor EQ Tuner Mute Output p9 Phantom Power Metronome Effects p10 ACOUSTIC BOX II IN PRACTICE Levels Outputs Sources p11 Using microphone and Piezo p11 UsingAKGC411and piezo p11 Using only piez...

Page 4: ...reo Reverb and Delay pre installed including Tap De lay Foot switch input for turning on off internal or external effects Effect send and return loop stereo Auxiliary input and output can be used for...

Page 5: ...particu lar attention to cords plugs convenience receptacles and the point where they exit from the apparatus 7 Abnormal smell If an abnormal smell or smoke is detected from the apparatus turn the po...

Page 6: ...rformances of the preamp avoid detaching connecting any of the cables while the Acoustic Box is powered on Before powering on the preamp make sure that the output knobs are not set to maximum Keep in...

Page 7: ...150Hz For double bass the high pass filter remove the subhar monic thump generated by the plucked bass which otherwise can drive ported bass speakers to over excursion Parametric equalizer EQ1 Ch1 is...

Page 8: ...quency 50Hz 250Hz Parametric equalizer Ch2 Ch2 is equipped with a parametric Eq designed to control the low mids of your mic It operates between 350 to 4KHz by correcting within 12dB High pass filter...

Page 9: ...e 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 correct...

Page 10: ...n Tempo mode You can either set the tempo by tapping the Tempo button or by using the keys The Tempo LED will blink on the tempo you set allowing to use it as a visual metronome Press and hold the Tem...

Page 11: ...e EQ1 knob at 9 o clock will do the job C Before adding the mic signal unpress the NOTCH filter the low pass filter the High Pass filter and the Phase buttons on Ch2 D Gently increase the LEVEL of cha...

Page 12: ...volume of your mic There are two main frequencies that are most sensitive to feedback The first area is the LOW LOW MID 100Hz 250Hz and the second area is the MID area 400Hz 1 5KHz For the LOW LOW MID...

Page 13: ...nce 1 Meg 8 2 Meg Selectable Signal level up to 0 dBu Adjustable Channel 1 level Parametric equalizer of Channel 1 Frequency range 360 Hz 4KHz MID level correction 12dB Ch2 Channel 2 active channel 48...

Page 14: ...gnal 3 Compressor sensitivity 4 Compression level led 5 Makeup Compression Output level 6 Parametric Low 40Hz 125Hz 7 Parametric Low 12 dB Correction 8 Parametric Mid 250Hz 1KHz 9 Parametric Mid 12 dB...

Page 15: ...1 q w e r t y u Ch2 o Comp EQ q w e r t y u o a q w e Output Effect Metronome Display w r y e r t q y w u i Top Side Controls Left Side Inputs Back Side External effects Effect Switch USB Right Side O...

Page 16: ...Return XLR R XLR L Aux in R XLR R Headphones R Aux in L Headphones L AMP XLR L AMP Phase All Imp switch 1Meg 8Meg 10dB 350 4KHz 40 150Hz 50 250Hz 350 4KHz 40 150Hz 250 1KHz 3K 12KHz Mic Line Switch Pr...

Page 17: ...17 My notes...

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