8
Full Range System Integration
The PSW-6 was designed to couple with the MSL-6
using the phase and amplitude response characteris-
tics of the low cut filter of the LD-1A.
Combining the MSL-6s with the PSW-6 requires a spe-
cific external crossover function to prevent the MSL-6s
from operating below 125 Hz and deteriorating the car-
dioid pattern of the combined system. The LD-1A low
cut function inserted into the MSL-6 signal path
achieves this specific roll-off response.
The following example illustrates the method of estab-
lishing a cross over point between the PSW-6 and the
mid-high cabinets in a full range system.
Use channel 1 (CH-1) of the LD-1A to distribute the generator signal from SIM to the speakers. As pictured in the
block diagram below.
While this example specifically addresses aligning a
single PSW-6 on the ground with an MSL-6, it outlines
the basic techniques for integrating the PSW-6 into
any full range system. For array information on other
Meyer Sound products please refer to the product spe-
cific operating instructions.
Position the speakers as shown in the illustration below.
Note that for this measurement the microphone position
must be on axis at least 5 meters from the PSW-6 and
very close to the ground. In general, ground plane mea-
surements are undesirable as there is poor data above
5 kHz. However, in this a case ground plane measure-
ment is used just to set the proper low frequency cross
over point. Ground plane measurements tend to elimi-
nate low frequency ground reflections which can cause
a perceived but illusionary reversal in phase. Do not
attempt to EQ the combined system from this micro-
phone position as it is off axis from the MSL-6 high
horn.
Input Signal
Mid-Hi Out
Sub Out
LD-1A
MSL-6
PSW-6
Setting the Crossover Frequency between the MSL-6 and the PSW-6 .
