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Röhren Vorstufe / Tube pre amp / pré ampli à tube
Die Vorstufe der GZPA Reference 2T ist mit 2 Röhren des Types CV 491 ausgestattet.
Diese Röhren benötigen eine Vorwärmzeit von ca. 12 Sekunden nach Einschalten der
Endstufe.
Die Vorwärmphase wird mittels separater LED angezeigt.
Bitte beachten Sie unbedingt die erhöhte Wärmeentwicklung dieser Bauteile. Daher
empfehlen wir, das Gerät mit mindestens 1 cm Abstand zur Bodenplatte zu montieren. Die
Belüftungsöffnungen der Röhren dürfen nicht abgedeckt werden.
Desweiteren sind Röhren konstruktionsbedingt erhöht erschütterungsempfindlich. Bitte
beachten Sie dies unbedingt bei der Montage. Der GZPA Reference 2T. Montieren Sie die
GZPA Reference 2T auf keinen Fall in unmittelbarer Nähe eines Subwoofers oder gar auf
dem Subwoofergehäuse. Optimal wäre die vertikale Montage des Gerätes. So stehen die
Röhren aufrecht und sind besser gegen Erschütterungen geschützt. Wenn dies beachtet
wird, ist der Betrieb in einem normalen Fahrzeug problemlos möglich. Bei Fahrzeugen mit
Sportfahrwerken oder z.B. vibrationsstarken Auspuffanlagen, sollten zusätzliche
Vorkehrungen getroffen werden, um die direkte Übertragung der Schwingungen auf die
Endstufe zu minimieren. Hier hilft insbesondere die schwingende Montage des Gerätes auf
Gummipuffern, oder anderen federnden und dämpfenden Elementen. Bei korrekter Montage
beträgt die Lebensdauer der Röhren ~10000 Betriebsstunden, dies entspricht bei täglich
2stündigem Betrieb einer Haltbarkeit von nahezu 14Jahren.
The GZPA Reference 2T is equipped with 2 tubes (model CV 491 ) in the pre amp section.
Those tubes require a preheating time of ~12 seconds after switching on the amp.
The duration of the preheating will be indicated by the separated LED.
Please be aware of the increased temperature near the tubes. We recommend to install the
amp with 1 cm / 0.4” distance between amplifier bottom and installation surface . Do not
cover the ventilation slots of the tubes.
Furthermore due to the special type of construction, tubes are enhanced shock-sensitive.
Please note that issue when you install the GZPA Reference 2T. Do not mount the amplifier
next to a subwoofer or even directly on the subwoofer enclosure. The perfect position would
be vertical. In that way the tubes will be upstanding and better protected against vibrations.
If those points are taken care of, the operation in a normal car is possible without any
problem. On cars with modified sport chassis or for example extremely vibrating exhauster
systems , the installation of the amplifier must be improved by fixing the amplifier on rubber
buffer, springs or any other damping elements to reduce the vibrations as much as possible.
If the installation is done correctly, the lifespan of the tubes is ~ 10000hours that means for
example 14 Years at 2hours daily use.
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