Dynacord S 1200 Manuale d'uso - Pagina 3
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DESCRIPTION
First of all, we would like to express our thanks and at the same time congratulate you on the decision to
buy one of our STANDARD PRECISION SERIES power amplifiers.
DYNACORD's STANDARD PRECISION SERIES amplifiers are made to meet the highest requirements
of any on-the-road application. Thus they provide on-board protection against thermal and capacitive
overload, short-circuit and the occurrence of HF or DC at the output. Additionally, special circuitry prevents
the output-stage transistors from being damaged by Back-EMF. During soft start, delayed switching of
the power outputs is accomplished via relays and a limiter controls the initial current inrush, preventing
the mains fuse from being blown during the power-on operation.
The mechanical construction as well is carried out following the highest precision standards of the industry.
The robust steel chassis provides extreme rigidity and it is meant to live through any hard wearing condition
of a touring application. Thermal stability is guaranteed by two 3-Mode (OFF/SLOW/FAST) silently running
fans that offer the possibility to also use the amplifiers in a studio environment.
The extensive comparator circuitry constantly monitors the input and output signals and activates the
internal limiters whenever a non-linear operational state is encountered. This provides reliable protection
of the connected loudspeaker systems against overload and clipping. The sound quality of the STAND-
ARD PRECISON SERIES power amplifiers is superb. Using comprehensive dimensioned power supply
units with low-interference toroidal transformers gains a headroom that exceeds the nominal power
handling capacity by far. No V/I-Foldback-Limiter circuits are employed within the power amplifiers, making
it possible to operate the amps on complex loads up to ±90° phase angles without a problem.
The input facilities are carried out as balanced XLRF-type sockets while the Direct-Outs – on which the
carried-through signals are present – come as XLRM-type connectors. Using the Input Routing-switches
lets you determine if the STANDARD PRECISION SERIES amplifiers are operated in DUAL (stereo) or
PARALLEL (monaural) mode; "mono-bridged" operation is also possible.
The dB-scaled level controls are to be found on the front panel. These detented potentiometers guarantee
precise and reliable operation. The easy readable LED display offers quick optical information on the
power amplifiers' momentary operational mode. For each channel individually the display shows whether
they are operational, a signal is present at the outputs, when the limiters are activated, and whether one
of the protection circuits has been engaged or not. The power outputs CANNEL A, CHANNEL B and
BRIDGED OUT are carried out as Speakon connectors. A ground-lift switch that separates the enclosure
from the appliance's ground potential and therefore helps to eliminate ground noise loops and the mono
bridged mode switch are also located on the rear panel. In normal operation all STANDARD PRECISION
SERIES power amplifiers can be used to drive loads down to 2 ohms; in bridged mode the minimal load
is 4 ohms. All amps are equipped with extremely silent running fans providing front-to-rear air circulation,
guaranteeing trouble-free operation even in smaller power amplifier rack systems.
Studying this owner's manual carefully will provide you with further and more detailed information about
the STANDARD PRECISION SERIES power amplifiers. Thus we recommend to keep on reading,
assuring you that the DYNACORD STANDARD PRECISION SERIES power amplifiers will provide you
with a lot of fun and satisfaction in your work.
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