Meyer Sound 650-P - Manual (Page 8)

8
Measurement and System
Integration Tools
It is essential that even the most carefully assembled
sound systems be analyzed with precise measurement
tools. We recommend using the Meyer SIM® System II
Sound Analyzer
and CP-10 Parametric Equalizer to
• assist the process of choosing and configuring
speakers;
• measure propagation delays between subsystems
to set the correct polarity and delay times;
• measure and equalize variations in frequency
response caused by the acoustical environment
and the placement and interaction of speakers.
Contact Meyer Sound for assistance with your application.
We recommend using the Meyer LD-1A Line Driver to
integrate different types of Meyer self-powered speakers
into a complete system. The LD-1A has two channels
equipped to control a full-range main system, and six
auxiliary channels for down-fill, front-fill, and delay
systems. The LD-1A maintains signal integrity for long
cable paths and provides the following useful functions:
• The Lo Cut switch activates a high-pass filter
(160 Hz, –12 dB/oct, Q = 0.8) that performs a
crossover function for the Mid-Hi output.
• The DS-2 & Sub Crossover switch (channels 1
and 2 only) activates a crossover network opti-
mized for the DS-2P when used with the 650-P.
With the switch in, frequencies below 80 Hz are
sent to the Sub output (for the 650-P), and above
80 Hz to the DS-2 output. When the 650-P is used
without the DS-2P, the switch should be out,
which sends a full-range signal to both the DS-2
and Sub outputs.
• The DS-2
f and Sub f switches (channels 1 and 2
only) toggle the polarity for the DS-2 and Sub
outputs.
• The Mid-Hi, DS-2, and Sub outputs (channels 1
and 2 only) each have their own gain control and
mute switch.
POLARITY NOTE: The polarity for Meyer self-powered
speakers may be reversed using the input polarity switch
on the user panel. The LD-1A also allows polarity reversal
with the DS-2 f and Sub f switches for speakers con-
nected to the DS-2 and Sub outputs. When making
polarity decisions in applications that include the LD-1A,
check the state of all polarity switches.
Full-Range Systems
Meyer Speaker Types
The following Meyer speakers are mentioned in the
example applications.
MSL-4 Self-powered mid-hi speaker
CQ Series Self-powered mid-hi speaker
MTS-4 Self-powered full-range speaker
PSW-2 Self-powered subwoofer
650-R2 Externally amplified subwoofer
The Meyer self-powered speakers listed above have a
loop
connection to send the input signal to another
speaker. Full-range signals may be applied to all Meyer
self-powered subwoofers because they have built-in
active crossovers that filter mid-hi frequencies.
650-P and MSL-4
The 650-P is compatible with the MSL-4, CQ, and MTS-4.
However, since the low frequency response for each
speaker overlaps with the 650-P, the system frequency
response exhibits a rise in the range 65 – 100 Hz (MSL-
4), 40 – 100 Hz (CQ), and 30 – 100 Hz (MTS-4). It is
important to emphasize that the speakers are in phase in
this region. The rise can be corrected using the Meyer
CP-10 Parametric Equalizer, if desired.
MSL-4
loop
input
input
CP-10 EQ
(1 Channel)
650-P
Set the MSL-4 and 650-P to the same polarity.