uniK 08+ connectors & functions
This text describes the layout and main functions of the rear panel of our
uniK 08+ active studio
1. XLR input - this connector accepts balanced XLR input connections
(typically with a +4dBu level). XLR input is wired like this:
2. TRS input - this jack accepts TRS input connections, either balanced
or unbalanced. For balanced connections, a 3-conductor TRS plug is necessary.
The TRS input is wired like this:
Unbalanced wiring works with either a 2- or 3-conductor TRS connector. A 2-conductor
TRS plug (or sometimes also just called TS plug) automatically grounds the minus
signal input, whereas a 3-conductor TRS plug wired unbalanced provides the option
of leaving the minus open or grounded. We recommend that you ground the unused
3. vent port - uniK 08+ is a vented box speaker system with a vent port
on the rear panel. Because of this, it is better to keep some small distance
from the wall and not to put the speaker directly into a corner of the room
(as the two sides of the corner would generate different reflections).
4. input gain level adjustment - use this gain control knob to adjust
the speaker properly to the input level from the sound source. Make sure to
setup all speakers accordingly. When set to 0 (middle position), the input level
is set to the recommended calibrated level to reach the most optimised dynamic
response on the output (based on a a balanced XLR or TRS signal with +4dBu reference
5. character selection (room adjustment) - via the character selection
it is possible to tilt the whole frequency spectrum up (BRIGHT) or down
(SMOOTH). This allows you to adjust the sound according to the requirements
in your room as well as to your own hearing preferences and requirements. When
set to 0 (middle position), the frequency response is optimized, i.e. as linear
as possible. When the value is tilted upwards, the higher frequencies will appear
stronger, yet the whole frequency spectrum will match accordingly. When the
value is tilted downwards, the high frequencies will appear less strong. It
is recommended to adjust the CHARACTER first, before you change something
on the LOW and HIGH knobs. Also make sure that each speaker has
exactly the same settings.
6. high frequencies (room adjustment) - the HIGH knob allows
you to adjust the high frequencies via a built-in EQ mostly affecting the area
around 10kHz, by around 1dB for each step up or down, according to local requirements
and your taste. When set to 0 (middle position), the whole frequency response
is optimized, i.e. as linear as possible. Make sure that each speaker has exactly
the same settings.
7. low frequencies (room adjustment) - the LOW knob allows you
to adjust the low frequencies via a built-in EQ mostly affecting the area around
100Hz and below, by around 1dB for each step up or down, according to local
requirements and your taste. When set to 0 (middle position), the whole frequency
response is optimized, i.e. as linear as possible. Make sure that each speaker
has exactly the same settings.
8. ground lift switch - with the ground lift switch you can lift the
signal ground from earth (when set to ON) or by default keep it connected
(when set to OFF). This allows you in some situation to reduce or remove
unwanted hum noise when there are issues with grounding of your audio signals
in your studio setup.
9. standby switch - you can turn the standby functionality ON
or OFF. When set to OFF, the standby energy saving functions are
not available and the unit will always be turned on. When set to ON,
the unit will switch to power saving mode after a while without any audio signal.
The power saving mode is indicated by a red ESI logo LED on the front panel
(instead of the normally orange power ESI logo LED). When there is an audio
signal again, regular operation resumes.
10. power switch - with the power switch you can turn uniK 08+ on and
11. power port with ext. fuse - use this connector to plug in the detachable
3-circuit line cord that connects to the power outlet. The connector contains
a replaceable fuse (T2AL/250V).