background image

FEATURES
VCRAK

is a kit for the subwoofer volume remote analogue control that permits to easily adjust the

amplifier output level without moving from the listening point. It consists of:

1.

VCRA level control to place close to the listening point; it has variable lighting (red, orange and green)
and intensity (Dimmer).

2.

VCA (Voltage Control Amplifier) module, to put inside the amplifier to control.

3.

Connection cables kit.

VCRAK

, based on VCA functions, can be only used with the components that are suitable to accept this

module.
When designing it, we minded not to affect the
signal path in order not to affect sound itself.
VCRA varies VCA module reference voltage,
that is proportional to the signal level to
modify; this makes preamplified signal stay
unchanged.

REMARK:

VCA module is stereo. This

allows the amplifier subwoofer section
mono/stereo modes not to change according to

the amplifier features or to the chosen configuration.

LIGHT SW

+ 12 VDC

REMOTE IN

GROUND

VOLUME

CONTROL

VCRA

Remote Out

IN

OUT

REMOTE

FUSE

POWER

VCRA

White/Yellow

Blue

Orange

Lights
switch

Ground

Red

(250mA)

FUSE

Black

Ground

SUBWOOFER

Battery

-

+

INSTALLATION

There are six sockets in VCRA rear panel, supplied with small spring terminal blocks to connect to
power supply (battery) and amplifier. Please follow instructions and connections diagram for a
correct installation.

GROUND: 

-12 VDC, to be connected to battery negative (-).

REMOTE IN:

Input for the cable coming from the source or the amplifier; it switches

on internal lighting.

+12 VDC:

Battery positive (+).

LIGHT SW:

Control to decrease internal lighting when the car lights are turned on. To

be connected after the lights switch.

VOLUME CONTROL:

Outputs to connect to the amplifier VCR sockets.

REMARKS: 

1.

The two contacts of VOLUME CONTROL sockets are equivalent and not polarised. They can be
connected to the two VCR sockets of the amplifier through the white-yellow wire as you like.

2.

Please refer to the amplifiers owner’s manuals in order to install VCA module.

We recommend the use of 

audison cable

products in order to have a very good installation.

CONNECTIONS

Press the screwdriver point on the terminal block, then insert
the peeled cable to the hole bottom. Release the terminal block
insuring the cable perfect fastening. Repeat the operation with
the other contacts.

WARNING:

Use the cables given with the device.

Otherwise, please use cables with 

1 mm

maximum diameter,

peeling their ends for about 

10 mm

.

PRECAUTIONS

In order to insure the system good functioning, avoid to install VCRA in hot or damp places.
Respect power supply voltage polarity.
For safer driving, we recommend to adjust volume not to drown external traffic sounds.

LIGHT SW

+ 12 VDC

REMOTE IN

GROUND

VOLUME

CONTROL

VCRA

CONNECTIONS DIAGRAM

10 mm

(ø max. 1mm)

Cables preparation:

VCRAK USE

VCRA level control has a knob with central tripping (“0” position). If the knob is adjusted on this
position, subwoofer volume stays unchanged.
If you turn the knob counterclockwise, you gradually decrease subwoofer volume until it is completely
silent.
If you turn the knob clockwise, you gradually increase subwoofer volume until its output level
doubles.

ADJUSTMENTS

1.

Set VCRA knob on the central tripping.

2.

Adjust output levels of the system channels through a standard calibration.

3.

Adjust subwoofer volume by turning VCRA knob according to your needs.

SUBWOOFER

VCA module

VCRA

level

control

Reviews: