ASL INTERCOM ROXX Series Manual del usuario - Página 5
Navegue en línea o descargue pdf Manual del usuario para Amplificador ASL INTERCOM ROXX Series. ASL INTERCOM ROXX Series 7 páginas. Personal headphone amplifier / line checker
Imprimir páginado not connect AC-signals higher than 40Vrms (e.g.
outputs of power amps >200 Watt into 8 ohm; a 1/4"
jack is not a safe connector for these kind of signals).
Before connecting any unbalanced signal to the 1/4"
input jacks, turn the Unbalanced input Volume control
(7) down.
There are three possibilities of connecting unbalanced
signals:
* Suppose you want to connect an unbalanced mono
signal on a mono 1/4" jack. This signal should be
connected to the Jack input labeled "Right/Mono"
(14). The input labeled "Left/Stereo" (13) should be
left unused. The mono input signal will be sent to
both left and right channnels of the Personal
Headphone Amplifier.
* Suppose you want to connect an unbalanced
stereo signal on a stereo 1/4" jack. This signal
should be connected to the Jack input labeled
"Left/Stereo" (13). The input labeled "Right/Mono"
(14) should be left unused. The stereo signal will
be sent as a stereo signal to the left and right
channel of the Personal Headphone Amplifier.
* Suppose you want to connect an unbalanced
stereo signal on two mono 1/4" jacks (e.g. Left and
Right). Connect the left signal to the input labeled
"Left/Stereo" (13) and connect the right signal to
the input labeled "Right/Mono" (14). The signals will
be sent to the corresponding channels of the ASL
RoXX -Series 301.
Volume Control
The unbalanced input section and the balanced input
section both have their own volume control knob as
descriped in the above sections. The unbalanced
input(s) and the balanced input can be used at the
same time with the possibility to make a mix between
the signals with the two volume control knobs (and the
balance and pan knobs).
Whenever only one input section is used turn the
volume control of the not used section down (anti
clockwise).
Warning !
Always turn down the volume controls down before
connecting any headphone or input signal and turn up
volume carefully. The output levels of the RoXX -
When the connected signal is higher than +6dBu, the
-20dB button (5) needs to be pressed. Turn up the
Unbalanced input Volume control (7) carefully and you
will hear the connected unbalanced signal(s). The
balance of the signal can be controlled by the Balance
control knob (8). A stereo signal can be made mono
by pressing the Stereo/Mono knob (6). This is usefull
when a single muff headphone is used or when you
want to pan the unbalanced signal to one side of your
headphone.
The unbalanced inputs are DC and overvoltage
protected.
Linking the unbalanced signal(s) to another ASL RoXX
-Series 301
The connector labeled 'Unbal. Stereo Loop Thru' (15)
will allways provide a stereo signal of the signals
connected to the input connectors. The unbalanced
input signal(s) can be linked to another Personal
Headphone Amplifier (or other device) by connecting a
stereo jack-jack cable between the Unbalanced
Stereo Loop Thru (15) connector of the first and the
Left/Stereo (13) of the second. Never use a 1/4" mono
jack on the loop thru connector (the right input signal
will be short circuited).
Using the RoXX 301 with an electric guitar (or any
other instrument with pick-ups)
A pick-up will sound best if the load of it is very low
(e.g. input impedance is very high, like an active DI-
box). ASL RoXX -Series 301 has a very high input
impedance on the unbalanced inputs (as long as the -
20dB button is not pressed). So an instrument pick-up
can be connected to the RoXX 301! Normally the
Right/Mono input connector would be used for this
mono signal. But then the pick-up is loaded by both
the left and right input amplifiers of the Personal
Headphone Amplifier, making the input impedance
half its value. It would be better to connect the pick-up
to the Left/Stereo input and pressing the Stereo/Mono
button. The input impedance is now 500k ohms and
the pick-up will sound best.
Series 301 can be ear damaging and destructive to
your headphone.
A S L C O M M U N I C A T I O N S Y S T E M S RoXX-Series 301 Manual