Dynacord L500 Benutzerhandbuch - Seite 11

Blättern Sie online oder laden Sie pdf Benutzerhandbuch für Verstärken Dynacord L500 herunter. Dynacord L500 20 Seiten. Linear precision power amplifiers

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DESCRIPTION

First of all we should like to thank and congratulate you for choosing the power ampliﬁ ers of the LINEAR

PRECISION SERIES.

DYNACORD power ampliﬁ ers of the LINEAR PRECISION SERIES meet the most stringent requirements

of tough touring applications. They are protected against high-temperature, overload, shorted outputs,

radio frequency interference and DC faults. The power transistors are protected from back-EMFdamage

by means of an additional protective circuit. For the so-called soft-start the power outputs are switched

on delayed via relays. An inrush current limiter circuit prevents the mains fuses from being blown.

Maximum precision is also guaranteed as regards mechanical construction and ﬁ nish. The robust steel

chassis features remarkable torsion resistance and is particularly designed to cope with the tough wear

and tear associated with going on tour in the rock & roll business. Thermal stability is guaranteed by

several low-noise 3-stage fans which also means that the ampliﬁ ers can be used inside the studio.

Comparator circuits constantly monitor the power ampliﬁ ers' input and output signal and control

the internal limiters in case of non-linear operating conditions. They protect the loudspeakers from

overload due to clipping of the ampliﬁ er. The LINEAR PRECISION power ampliﬁ ers feature excellent

transmission properties. These power ampliﬁ ers topology also makes for extremely low distortion rates.

Distortion factor (THD), intermodulation distortion (SMPTE-IM) and transient intermodulation distortion

(DIM 30 and DIM 100) are so low that they are only detectable with the most sophisticated measuring

equipment. Generously dimensioned power supplies with low-leakage toroidal-core transformers provide

considerable headroom well above the nominal ratings. V/I foldback limiter circuits were deliberately not

included in the Linear Precision power ampliﬁ ers to facilitate operation at complex loads up to a phase

angle of +/- 90°.

The inputs are electronically balanced on XLR connectors. (Isolation transformers can be retroﬁ tted).

Direct Outs in the form of XLR connectors (male), to daisy-chain the signal, are also standard features.

The modes DUAL/Stereo or PARALLEL/Mono can be selected via the Input Routing Switch. Furthermore,

the LINEAR PRECISION power ampliﬁ ers can also be operated in "Mono Bridged" mode.

The front panel accommodates the dB-calibrated input Gain controls which are designed as particularely

precise and safe-to-operate detented potentiometers. The LED display provides information about the

power amplifers' operating status. For the two channels, they indicate readiness to operate, whether

there is a signal at the input or output, when the Limiters have been activated and whether one of the

protective circuits has been triggered. The power outputs Channel A, Channel B and Bridged Out are

available on Speakon connectors. The rear panel also accommodates the ON/OFF switches for the

integrated Hi and Lo cut ﬁ lters, a groundlift switch which separates the chassis from the circuit ground

thus helping to prevent hum loops and the operating mode selector for mono bridged operation. All

LINEAR PRECISION power ampliﬁ ers can be used in normal applications on loads as low as 2 ohms and

in bridged mode down to a minimum of 4 ohms. They also feature extremely quiet fans with front-to-rear

airﬂ ow, facilitating operation in large and narrow ampliﬁ er racks.

This Owner's Manual is meant to help you familiarize yourself with all the LINEAR PRECISION SERIES'

other features. Please read it through carefully and we guarantee that your new power ampliﬁ er of the

LINEAR PRECISION SERIES from DYNACORD will give you great pleasure.