d&b M2 - Manual (Page 6)

M2 Manual (5.0E) Page 6 of 8
Operation with A1
GR LO
ISP
GR HI
OV LO
OV HI
CUT
MUTE
M2
FLOOR
FREE PAIR
0
-6
-12 dB LF COUPLING
ID
+6
Controls on M2
controller module
10 100 1k 10k
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
FREE
PAIR
Frequency responce LFC setting
(min. and max.)
Two M2 cabinets can be driven by a single A1 mainframe fitted
with an M2 controller module.
CUT switch
The CUT setting is available. The characteristics of the CUT setting
is explained under the previous section "Operation with D12 -
Controller settings".
LFC level control
The detented LFC control (Low Frequency Coupling) adjusts the
systems low and low/mid response for the different operating
environments of the M2 cabinet.
The FLOOR position is the standard setting for a single M2, used
as a floor monitor.
Turning the control to the PAIR position, the low and lower/mid
frequency range is further reduced (Corner frequency about
600 Hz). The maximum left position fully compensates the different
coupling behaviour of the low and high frequencies when two
cabinets are used in a paired monitor application.
Turning towards FREE increases the systems low end for operation
without floor coupling (e.g. flown).
Dispersion characteristics
The diagrams below show dispersion angle vs frequency plotted
using lines of equal sound pressure (isobars) at –6 dB and –12 dB.
The nominal 45
° horizontal dispersion angle is maintained from
800 Hz - 10 kHz.
M2 isobar diagram horizontal M2 isobar diagram vertical