A Series Active Monitor Speakers
Date printed: 29.02.00 Welcome! E1/1
1 WELCOME!
We are happy to welcome you in the circle of the users of Studer's A series
active speakers, and we felicitate you on your selection. Thanks to Studer's
experience collected during more than 40 years of business in the profes-
sional audio products field, you may expect that the performance of your
new unit will fulfill your highest demands.
1.1 Basics
With the A series, Studer has created a family of active speaker systems.
With exterior dimensions kept at a minimum, but nevertheless with high
sound pressure levels, these speakers are suited for many different applica-
tions. For audition rooms and continuity cubicles, for the editing studio and
control rooms, for use in mobile applications or OB vans, the A series offers
ideal problem-oriented solutions.
The Studer A series active speakers can be adjusted to any individual re-
quirement by means of various controls. Differences in operating levels or
differences due to speaker placement can be compensated thanks to the vari-
able input sensitivity and the bass roll-off controls. For horizontal place-
ment, the A5's mid-range/tweeter unit can be rotated by ±90° after loosening
four screws.
To meet professional standards, the A series is equipped with an XLR-
compatible connector and electronically balanced line input (A1) or trans-
former-balanced line input (A3 and A5).
The most important characteristics of the A series active speakers can be
summarized as follows:
• Active 2- or 3-way speakers for high sound pressure levels in near-field
applications or medium- and large-sized monitoring rooms.
• Suited for all commonly used operating levels, input sensitivity continuously
adjustable.
• Low distortion rating; the magnetic flux is stabilized by damping the coil
reaction.
• Exceptional damping of the individual systems by negative output imped-
ance of the power amplifiers.
• Matched signal propagation delay between the individual transducers
through separate electronic delay lines.
• Group delay compensated band-pass filters.
Negative output impedance: A speaker diaphragm should accurately follow the electrical excitation. In
the Studer A series active speakers, this is achieved with negative output
impedance in all power amplifiers, which efficiently attenuates undesired
echo oscillations of the diaphragm. Each of the frequency ranges features
its own power amplifier with negative output impedance. This forces the
diaphragm to exactly follow the input signal, and undesired responses (dia-
phragm and enclosure echoes) are suppressed. Percussive signals in par-
ticular (e.g. applause) are reproduced very accurately.
This principle is also an essential prerequisite for other improvements:
• Utilization of optimum crossover network techniques
• Other distortion reduction measures.
To Next Page
Loading...
Need help?
General