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JKP · Features
JKP - Passive DI BOX - Transformer Balanced
The JKP serves as a universal passive DI box with low output impedance. The JKP
features one XLR input and two 1/4" jack inputs in parallel. The JKP is designed for
multiple instrument connection such as keyboards, guitars or instrument amplifiers
direct output. The JKP also features phantom power supply pass-through for
condenser microphone connection and output signal Line Driving.
1. Phantom Power Through
The JKP DOES NOT REQUIRE PHANTOM POWER TO OPERATE. When using a
condenser microphone that requires a phantom power from the mixing desk, turn
the PHANTOM THROUGH switch selector to the ON position and the RATIO switch
selector to the 1:4 position, (so that both switch selectors are in the top position). In
position 1:2, no phantom power will be passed through the unit to the microphone.
2. Monitor and Line Outputs
The symmetrical LINE OUT output works with an impedance of 100Ω and with
a ratio of 1:2 or 1:4. The adjacent MONITOR OUT output has an output impedance
of 600Ω and a level 6dB higher than the LINE OUT output. The ratio of the monitor
output is half that of the line output. (1:2 LINE = 1:1 MONITOR OUTPUT)
3. XLR and Jack Inputs
The JKP features two inputs with the XLR and 1/4" jack connector connected in
parallel. Both outputs are connected symmetrically. When using a mono jack,
the relevant input is switched automatically into the asymmetrical mode. To
split a microphone signal to different sources simply plug it into the XLR input.
The JKP has the ability to send high quality microphone signal long distances
(Up to 300 m).
4. RATIO Switch Selector 1:2 / 1:4
This is intended for changing the voltage and impedance ratio. For example,
a condenser microphone's impedance can be decreased 16 times (1:4 position)
which will improve the sound quality and capability of the microphone to drive
long cables. The 1:2 position can also be used to improve the sound quality on
dynamic microphones. Both inputs can be disconnected from the ground.
The 1:4 ratio is for use with high impedance sources and the 1:2 ratio is for
lower impedance sources.
5. GND Ground Switch Selectors
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. It is used 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. Interruption of the ground loop. The RC position - the grounds for the input and the output are
interconnected via a parallel RC combination. It is used to suppress static disturbance.
JKP - part number KVV 987 201