Section 4: I-Tech and JBL VerTec 15
Application Guide
4 I-Tech and JBL VERTEC
Crown I-Tech amplifi ers and JBL VERTEC Line Array loudspeaker systems make a
powerful combination. With them, you can deliver a sound that is very loud, clear, and
natural, with uniform controlled coverage. This section provides recommendations for
matching I-Tech amplifi ers to V
ERTEC loudspeakers, and how to properly wire them.
The examples shown are basic building blocks of a complement of V
ERTEC elements,
along with the appropriate I-Tech amplifi ers to drive them. You can design your system
with these suggestions used in multiples to build the size of line array you need for
your application. With I-Tech’s studio-grade, on-board DSP and factory furnished
speaker-modeling presets designed for V
ERTEC, setting up your system has never been
easier.
When choosing your power amplifi er confi guration, you may want to use identical
amplifi ers for all frequency bands in the system. This is perfectly permissible if you
use the available signal processing to limit each amp’s channel to a safe output level
for its bandpass. This may make it easier to reconfi gure your amplifi er inventory as
needed.
The limiter settings provided for the example systems are based on Average Power
and Continuous Maximum Power specifi cations as suggested by JBL for V
ERTEC Line
Array systems. The band-pass peak voltage is 6 dB above the voltage used at continu-
ous maximum power. The recommended limiter threshold settings will provide 3 dB of
headroom before the band-pass peak voltage is reached. The limiter would engage 3
dB above continuous average power, or 3 dB below the peak voltage for the component
or Bandpass. Users should adjust these values to their particular needs.
To take full advantage of the Line Array Summation Effect, and to maintain good array
coverage and directionality, we suggest using a minimum of four V
ERTEC array ele-
ments. Subwoofers are optional and may not be required in many situations. Refer to
the JBL VERTEC Application Guide for further information.
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