KV2 Audio JKP - Manual (Page 4)

JK1 - Active DI BOX - Line Driver
The JK1 features two 1/4” jack inputs with mix or parallel function with a variable
low cut filter and 15dB pad. Phase shift and ground lift switches are also available.
The JK1 is ideal for connection of single keyboards, guitars and instrument
amplifier output conditioning or combining two inputs via the mix function.
1. Phantom Power Supply
For ease of use, maximum headroom and low noise the JK1 is powered by
phantom power from the mixing console. A green LED indicates the presence of
phantom power. Simply switch on phantom power on your console and you are
good to go.
2. Input Selection Switch
The JK1 features two asymmetrical inputs with 1/4“ jack connectors. These inputs
can be set as a parallel (input is present on thru), mixed together (inputs placed
into the input and thru are mixed together) or parallel with -15dB attenuation on
input.
3. Low Cut Switch
Selects the high pass filter frequency point between 160 and 80Hz.
Ideal for eliminating unwanted bass rumble from instruments.
4. Low Impedance Output
The main symmetrical LINE OUT output has an impedance of 50Ω
and it is Intended for connection to a mixing desk. The output is
separated galvanically from the input.
5. PHASE Switch Selector
Selects between 0° and 180° for LINE OUT output. This switches the
XLR pin-2 and pin-3 to interface with older equipment. Also can be
used when the instrument is being reproduced by the DI and
microphone to avoid cancellation.
6. GND Ground Switch Selector
This ground-lift switch breaks the ground between the input & the
output to eliminate hum and noise caused by ground loops.
The GND position - the grounds for the input and output are
interconnected ideal if the signal source is not grounded.
The LIFT position - the grounds for the input and the output are
disconnected. It is used if the signal source is grounded and you are
experiencing ground loop problems.
JK1
JK1 - Active DI BOX - Line Driver
Features
4
DC
DC
ON
2
3
1
convertor
THRU
JACK 1/4
LOW CUT
160Hz
80Hz
20Hz
LOW CUT
LINE OUT
PHANTOM
POWERED
LOW Z 50Ω
PHASE
INPUT
JACK 1/4
PARRALLEL
MIX
PARRALLEL
-15dB
INPUT
SETTING
GND
JK1 Block diagram
M A D E I N C Z E C H R E P U B L I C
JK1, ACTIVE DI BOX
Product number:
KVV 987 205
JK1 - FRONT PANEL
OFF
80Hz
160Hz LIFT
GND
MIX
PARALLEL
-15dB PARALLEL
2 2 6 3
JK1 - REAR PANEL
LINE OUT 50Ω
PHANTOM IN
0º
180º
PHASE
1 4 5