dbx
1034 Stereo/Mono Crossover/Limiter
July 12, 1996 Designed with the professional touring
and permanent install markets in mind, the new dbx 1034 electronic crossover/
limiter features dbx's proprietary PeakStopPlus(TM) limiting on every band of
its two channels. Combining superb sonic characteristics and paramount system
protection, the single-rack-space dbx 1034 provides either three-way stereo or
four-way mono (back panel switch-selectable) for medium to large multi-band sound
reinforcement systems. The crossover offers the option of a summed low-frequency
output (mono subwoofer out), as well as a switchable circuit that adds pre-emphasis
for constant directivity horns. This pre-emphasis helps to compensate for the
horns' natural roll-off or naturally occurring deficiencies in response. Three
eight-stage lightpipe ladders on each channel allow the operator to easily monitor
how much gain reduction the PeakStopPlus circuit is applying to the individual
bands as well as the output level. Each band is also equipped with lightpipe phase
invert and mute switches. All rotary controls are precision-detented pot which
provide accurate, tactile control over the 1034's parameters. Input and outputs
are RFI filtered, while outputs are electronically servo-balanced to maintain
constant levels into balanced or unbalanced loads. All rear panel input and output
jacks are gold-plated Neutrik(TM) XLR-type connectors. Highly accurate 24dB
per octave Linkwitz-Riley crossover filters in a state-variable configuration
assure a flat frequency response when the outputs are summed acoustically and
have the added benefit of coherent phase response of adjacent outputs. The 24dB
per octave slope also protects drivers by rapidly rolling off frequencies beyond
the crossover points. Over-excursion of low-frequency drivers in vented box enclosures
is prevented by 18Hz Hi Pass third-order Butterworth filters. These filters may
be bypassed internally if desired. A low-frequency range x10 switch on each
channel can multiply the low/mid crossover frequency range of the front-panel
marking by a factor of 10. Each channels' output gain may also be adjusted +/-12dB,
while an optional security panel may be attached to protect control settings.
The dbx 1034 is ideal for improving system intelligibility and sound quality,
as well as tri-amping or quad-amping to increase amplifier efficiency. Bands and
touring companies using multi-way systems will find the 1034 to be an important
tool, while the unit can also be effectively used in conjunction with high-end
studio monitor and home theater systems. For more information, visit their web site at www.dbxpro.com. | 
