Operation; Mono Input - Dynacord PM 502 User Manual

20 en | Operation
7

Operation

7.1

Mono input

GAIN control
Rotary control for adjusting a MIC/LINE input's sensitivity. These controls let you optimally
adjust the incoming signals to the mixer's internal operation level. Slight adjustments can offer
the benefits of an improved S/N-ratio and provides you with the full bandwidth of the
PM 502's outstanding sound capabilities. The following gain setting instruction is to be used
as a guide to help achieve a good signal input level:
1.
2.
3.
4.
5.
If you intend to make further adjustments to the channel's EQ setting, you should perform
steps 4 and 5 again, as changes in the sound shaping section also have an influence on the
channel's overall level.
HI/MID/LO controls
The mixer's EQ section allows for a broad difference in the shaping of the incoming audio
signal within three frequency bands. Turning one of the EQ level controls to the right
enhances/amplifies the corresponding frequency range while turning it to the left lowers/
attenuates the signal of that specific frequency band. Before you begin to alter the sound, all
EQ controls should be set to their neutral position, i.e. their marker points straight up (locked
in place). Try not to set the EQ controls to extreme positions. Usually, minor changes are
sufficient to produce the best results in the overall sound. You should use the natural
reproduction as a starting point and rely on your musically trained ear. The moderate use of
the MID control is the best remedy to avoid acoustical feedback. You should try to avoid using
this frequency range to an extreme level. Lowering the level in this band will provide you with
higher output and help reduce feedback. Adjust the LO control to your taste, to add more
"punch" to the sound of a kick drum or "body" to the vocals. Use the HI control in the same
way to provide cymbals and vocals with more treble for a more transparent sound.
FX control
The FX controls is used to set the amount of effect you require on that channel input to be
routed to the integrated FX effects unit. The signal path is split post VOLUME control so that
the volume setting also influences the amount of the signal that is fed to the FX unit. Using the
FX controls lets you easily assign an effect for groups of musical instruments or vocals. To
determine the desired level of the effect, you should start with the controls set at their center
and make individual adjustments from there on.
Please monitor the PK LED in the FX channels. The indicator should only light up briefly at the
occurrence of high signal peaks. If the indicator is constantly lit, you should lower the send
levels of those channels where the program peaks occur. For further information, please read
the paragraphs about the FX unit.
15-May-14 | 02 | F01U297804
Set the MASTER volume controls to their minimum values (counterclockwise).
Set the GAIN control and the corresponding channel VOLUME control to their center
position.
Connect the sound source (microphone, instrument, etc.) to the desired MIC/LINE input.
Start the sound source at the highest volume level to be expected – respectively sing or
speak as loudly as possible directly (close up) into the microphone.
While playing the sound source or singing into the microphone, adjust the input level
using the GAIN control, so that during the loudest part, the PK LED does not light up. This
is the basic channel setting, leaving you with at least 6 dB of headroom, i.e. you have at
least a range of 6 dB before signal clipping occurs.
User manual
PM 502
Bosch Sicherheitssysteme GmbH