5
speaker relays and all three LED are flashing. Please power off the
DWARF II
completely by
the mains switch
(12)
to reset the protection circuit. The
DWARF II
can be powered up
again after approx. 10 seconds. If all LED are still flashing after the reset, there may be a
defect in the output stage and the unit must be sent in for service. Please contact your
authorized dealer, distributor or
TRIGON ELEKTRONIK GmbH
directly.
If LED
(3)
flashes quickly
LED
(4)
flashes slower at the same time, an
Overload
occurred
to the power amplifiers and the speakers are turned off. The flashing of the LED stops
after approx. 5 seconds and the speaker relays switches on again.
Possible reasons for an overload are e.g. a too low speaker impedance or an over-regulation
of the power amplifier expressed in a loud and distorted rendition.
Should the operation
temperature
of the unit reach its maximum permissible value the
speakers are deactivated and LED
(3)
flashes quickly. Once the temperature returns to
normal design parameters, the speakers will be reactivated and the LED stops flashing.
To supply the power amplifier in cooling down it is useful to turn the volume control at the
preamplifier to “Zero”.
Sometimes it may happen, that the combination speaker and speaker cable does not suit
very well to
DWARF I
I and the power amplifiers start to oscillate in an inaudible level of
frequency. In this case the power amplifiers warm up depending on the intensity of oscillation,
because the power amplifiers emit now power to the speakers. To protect the power amplifier
against the oscillation caused by external influences
DWARF II
is equipped with protective
electronics which turns off the speakers to stop oscillation immediately. During the deactivation
of the speakers LED
(4)
flashes quickly.
After approx. 5 seconds speakers are reactivated again. If LED
(4)
starts flashing again quickly
(and speakers are turned off again), please power off the
DWARF II
at the mains switch and
use a different speaker cable. In most cases oscillation can be prevented thereby, provided that
the now used cable has a less capacitive resp. inductive rate.
Following an overview of all LED light sequences and their meaning in short form:
-
DC-Offset:
All LED are flashing, speaker is deactivated permanently
-
Overload:
LED
(3)
flashes quickly
, LED (2)
flashes slower, the speaker
turns off short-term
-
Temperature control:
LED (3) flashes quickly, speakers are deactivated till the temperature
of the power amplifier returns to normal
- HF Oscillation:
LED
(4)
flashes quickly and the speaker is deactivated short-term
Specifications:
Input Impedance
: 47KOhm
Input
: 1x XLR Balanced
Output
: 1x Speaker, 1x Line
Output Power
: 1x 90W at 4 Ohm, 60W at 8 Ohm
Signal Noise
: 40µV (A-weighted)
Frequency Response
: 20Hz – 150KHz (-3dB)
THD + N
: < 0.02%
Dimensions H x W x D
: 59,5mm x 200mm x 330mm
Weight
: 5.2 kg
Warranty
: 3 years
