Klein + Hummel M 52, Operating Manual

Page: 9 / 20

Klein + Hummel
M 52 (D) Page 7
AES3id or S/P-DIF
Digital Source
Analog Source
Digital Signal
Analog Signal
Subframe A – Left signal
Subframe B – Right signal
BNC XLR
Left
signal
Right
signal
XLR BNC
L R
Set rear panel
switch to ““BNC”
Set rear panel
switch to “BNC 75 Ω ”
Simultaneous a Simultaneous a Simultaneous a Simultaneous analog nalog nalog nalog and digital and digital and digital and digital connections on the M 52 D connections on the M 52 D connections on the M 52 D connections on the M 52 D
Volume Control
Volume Control Volume Control
Volume Control
A volume control
volume control volume control
volume control on the front panel allows the loudspeaker to be matched to a wide
range of equipment outputs whilst maintaining the desired acoustical output. This control
is also used to match the output level of the loudspeaker that of other loudspeakers in
the audio reproduction system. When the volume control is set to maximum, a +6 dBu
(1.55 V) input signal gives 100 dB SPL output at 1 m. The maximum input level that the
input stage can accept is +19 dBu (7 V). The maximum acoustical output of the
loudspeaker is limited by the protection system. In general, larger loudspeakers can play
louder and for longer periods than smaller loudspeakers. As with any other component in
the audio chain, it is best to use the lowest gain for the application so as to minimize
amplification of the preceding equipment’s source noise. To check this, if the noise drops
dramatically when the input cable is unplugged, the noise is coming from the source not
the loudspeaker.
Amplification and Driver Amplification and Driver Amplification and Driver Amplification and Driver
Amplifiers featuring low harmonic and intermodulation distortions, and low noise to
ensure a clean audio reproduction. Although no damage will result, insufficient cooling
will cause the amplifier protection to activate prematurely thereby limiting the system’s
maximum output level.
A long throw, efficient, low distortion driver ensures a clean sound quality even at high
replay levels. The driver is loaded by the internal volume of the cabinet and is
magnetically shielded for use near CRT screens or magnetic storage media. The system’s
SPL output and the cabinet volume can be seen in the specifications section.
Cabinet Cabinet Cabinet Cabinet
The aluminum cabinet is painted using the RAL color (7021). An appropriately colored
pen can be used to touch up the paintwork if it is scratched during transport or use.