Luxman P-750u, Owner'S Manual

Page: 13 / 20

HEADPHONE AMPLIFIER P-750u
10
Before connecting
Before connecting this unit to any other input/output devic-
es, ensure that the IEC connector of the supplied AC power
cable is firmly connected to the AC power inlet on the back
of the unit.
Before making any connections, turn off the operation
switch to power off the unit and ensure all other input and
output devices are also powered off to avoid any unexpect-
ed accidents or problems resulting from noise.
How to connect the AC power supply
Use the supplied AC power cable to connect the AC power
inlet to an AC power socket on the wall of your listening area.
How to connect input devices
Connect the input terminals of this unit to the output terminals
of input devices such as a CD player, SACD player or the
record output of a control amplifier. Connect the RCA unbal-
anced line inputs of this product to the RCA output terminals
of an input device using RCA cables. Connect the balanced
XLR input terminals of this device to the balanced XLR output
terminals of input devices using XLR cables.
Use the input selector switch to select an input device, set
to LINE to select input devices connected to the unbalanced
line input (LINE) or set to BAL LINE-1 or BAL LINE-2 to select
input devices connected to the two balanced line inputs.
How to connect balanced headphones
With the volume control turned fully counter-clockwise to set
the volume level to zero, insert the XLR connector(s) of your
balanced headphones into the terminals on the front panel
of the unit. If the connector is a 4-pin XLR, connect it to the
PHONES-2 terminal, if your headphones have two 3-pin XLR
connectors, connect them to the PHONES-3 terminals, pay-
ing attention to the left (L) and right (R) configuration. You may
now adjust the volume control to the desired level.
The applicable impedance range of this unit is 16Ω to 600Ω
for balanced headphones.
How to connect unbalanced headphones
With the volume control turned fully counter-clockwise to set
the volume level to zero, insert the 1/4 inch stereo jack plug
of your unbalanced headphones into the stereo jack socket
PHONES-1 on the front panel of this unit. You may now ad-
just the volume control to the desired level.
The applicable impedance range of this unit is 8Ω to 600Ω
for unbalanced headphones.
CAUTION: Attention must be paid to the volume level be-
cause this product is is capable of high powered output
levels. Be sure to rotate the volume control fully count-
er-clockwise to reduce the volume to zero before turning
the power on or off or before connecting or disconnecting
headphone connector(s) to prevent any damage to head-
phones or hearing.
How to connect the through output
The through output (THROUTH OUT) on the rear panel of
this product may be used when an input device connect-
ed to the line inputs (LINE) of this unit only has one stereo
pair of outputs. It is possible to connect the through output
of this unit to the input of a control amplifier or integrated
amplifier. To enjoy listening on headphones, set the through
output to off. When not using headphones, turn the volume
control fully counter-clockwise to set the volume to zero and
set the through output to on. The signal from an input device
connected to the line inputs will be directly connected to the
through output and can be reproduced via a connected am-
plifier and speakers.
When this unit is powered off, the line input is automatically
connected to the through output regardless of the through
output selector switch position (on or off).
In a situation where the output impedance of an input de-
vice is high and the input impedance of a device connected
to the through output is low, this product's headphone out-
put level will be reduced
CAUTION: Whenever the power to this unit is switched on
or off, ensure that the volume control of the amplifier con-
nected to the through output of this unit is set to zero. Fail-
ure to observe this may generate unwanted noise and lead
to possible damage of the output amplifier and speakers.
It is recommended that you set the through output control
switch to off when listening using headphones.