channels when any of the following situations are noticed:
- The amplifier channel clip LED lights up frequently.
- The speaker produces a slight distorted sound / there is a noticeable loss of audio quality and
clarity.
To be sure that slight peaks in music do not affect your signal quality or performance, set your signal source
to +3 dB. Then, set the optimal volume level of your amplifier and pay close attention to your speakers and
amplifiers (as described above in step 2 of the checklist). When your speaker system performs at full output
capacity without audio quality issues, decrease the audio signal source back to the 0dB position. Now, when
a slight audio peak is sent out through your signal source, it will not affect your speaker system.
Signal source is often the source of the problem!
In most cases, the signal source of your system (usually a DJ or PA mixer, or a DJ controller) is the source of
audio quality problems. This is commonly caused by improper gain structure or excessive input signals to
your channels. Make sure to monitor every processed audio signal in your system for an optimal audio
performance. Please note that every fault in your signal source will be processed and amplified by your
speaker system.
Always make sure that the master output of your signal source does not exceed 0dB. If it does, however, this
could result in noticeable audio quality loss and possible distortion. Even when your master volume setting
does not exceed 0dB, an overloaded signal could be present on your channel inputs when the gain is set too
high. Pay close attention to the gain settings on your channel inputs and do not allow the input signal to
exceed 0dB.
Front panel
The front panels of all D-amplifiers are equipped with just a few
buttons and LED indicators. This makes it possible for professionals
and amateurs alike to work with any of the D-series amplifiers.
The front panel has the following controls and indicators:
Controls:
- Volume control for each channel, 0-10 (used to set the desired
volume for each channel)
- Power ON/OFF switch (to switch the device on and off)
Indicators:
- Green signal LED (lights up when an incoming audio signal is detected by the amplifier circuitry)
- Red Limiter LED (lights up when the limiter is active and overloading of the amplifier components is
detected)
- Blue Power LED (power 'On' status indicator)
Input section
The Devine D-series amplifiers are equipped with a clearly marked
signal input section on the rear of the amplifier. This input section is
suitable for one stereo input signal while the input of your choice is
in use. Proper inputs can be found on PA-mixers, DJ mixers, DJ
controllers, audio interfaces and many other devices which provide
high-quality stereo line output signals. The D-series amplifiers are
equipped with balanced XLR inputs, as well as balanced 6.35 mm
TRS jack inputs. This ensures optimal quality and will help prevent
hum and buzz noise issues.
Devine does not recommend connecting a signal source without a clear volume setting display (like on an
MP3-player or smartphone), as it is not possible to see if the signal is below or above 0dB. However, it is
possible to connect such a device to an audio mixer to see how high the outgoing volume level of your
device is.
Any information and illustrations shown in this user manual are subject to change without further notice.
User manual version: 4.0
Creation date + author initials: 11-12-2015 RV Revision date + author initials: 10-12-2015 RV