18
Please note: the RIGHT phone jack is connected to the in-phase stereo
signal, whereas the left phone jack is connected to the 180
0
phase
shifted signal.
On power-up and power-down, the outputs are cut from the amplifier
circuitry by relay.
ALTERNATIVE BALANCED HEADPHONE CONNECTION
The phone jacks sockets of HPA V181 may be configured by means of
internal jumpers to provide balanced operation with two phone jack. To
configure the the sockets please refer to page 29 technical Appendix".
Left phone jack socket
Right phone jack socket
TIP
(-) left channel
TIP
(-) right channel
RING
(+) left channel
RING
(+) lright channel
SLEEVE
Ground (not necessary)
SLEEVE
Ground (not necessary)
HINTS FOR THE BALANCED OPERATION OF
HEADPHONES
As there is no common standard about how to make the connectors of
balanced headphones and headphone amplifiers, we decided to equip
our unit(s) with 4-pin XLR connectors.
In contrary to most XLR standards the female socket is situated on the
amp.
If you are not familiar in altering your headphones with matching
connectors we offer this work as a service. Please ask !!
ATTENTION:
Your headphone is double as loud as normal in balanced mode !!!
