| The mid-high section has two switch-activated optimized
filters. The Array EQ filter minimizes the low-mid frequency rise caused
by horizontal arrays of three to five MSL-4 speakers. The Lo Cut filter
performs a crossover function for the mid-high output. With the Lo Cut
filter out, a full-range signal is sent to the mid-high output.
The DS-2 & Sub Crossover function is intended for the DS-2P mid-bass
speaker when used with the 650-P or PSW-2 subwoofers. With the DS-2 &
Sub Crossover switch in, the Sub output receives frequencies below 80
Hz, and the DS-2 output receives frequencies above 80 Hz. When the DS-2P
is used alone as a subwoofer, or is not included in the system, the switch
should be out, which sends a full-range signal to both outputs.
The mid-high, DS-2, and sub outputs each have a mute switch and a gain
control that modifies their channel’s Master gain level; the DS-2
and Sub outputs have a polarity toggle. The mute switches affect the mid-high,
DS-2, or sub output only. For example, the mid-high output can be muted
without affecting the loop, sub, or DS-2 outputs. The six auxiliary channels
(3–8) control down-fill, frontfill, and delay systems. Auxiliary
channels can also be used to divide the main system into subsystems, allowing
independent signal levels for speakers directed at different audience
locations. Each auxiliary channel has Lo Cut and Array EQ filters, a mute
switch, and gain control. The two main and six auxiliary channels are
fully independent from each other.
The Meyer Sound LD-1A occupies two rack spaces and is constructed with
a 16-gauge steel chassis and 1/8-inch rack ears. This rugged design provides
protection from accidental impact, magnetic isolation from nearby devices,
and EMI immunity.
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