6
SYSTEM DESIGN - FULLY ACTIVE
TYPICAL “BI-AMPED” SYSTEM USING
PASSIVE CROSSOVERS
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PHCOAX tweeter
12dB per octave
High-Pass filter
(included)
** SPECIAL NOTE**
Tweeter connected “out-of-phase” to be acoustically “in-Phase”
0.1mH Inductor (Low Pass 6KHz)
(Not included)
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Front channels
Rear channels
4 Channel
Amplifier
(ONLY RIGHT CHANNEL SHOWN)
The Cerwin Vega PRO AUDIO COAX HORN
comes with a special 12dB per octave
crossover. It is HIGHLYrecommended that this
be used at ALL times - UNLESS you are using
an active crosssover set at above 7kHz. This
system, shown is “Bi-Amped”, but not ‘Fully”
active. FRONT channels of this 4 channel
amplifier are driving the mid bass drivers.
REAR channel are driving the tweeters.
The MIDBASS is shown with a 0.1mH inductor
(not included)in series to cross over
the midbass at 6Khz with a 6dB
roll-off. This setup makes it easier
to adjust level of the midbass
versus the tweeter.
“OPTIONAL”
TWEETER ATTENUATION
4 Ohm resistor
INCLUDED
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TYPICAL “FULLY ACTIVE” SYSTEM
(ONLY RIGHT CHANNEL SHOWN)
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Front channels
Rear channels
4 Channel
Amplifier
PHCOAX tweeter Connection
(HP filter at 6Khz at 12dB per octave MINIMUM)
PH COAX HORN drivers can be “Bi-Amped”
Or what is commonly called FULLY active
system setup. In the system shown - the
tweeter(s) are wired to the FRONT channels
and the MIDBASS driver section is wired to
the rear channels. At this point you should
seriously think about purchasing a DSP
processor - unless your amplifier has a
HP filter that can go to 8Khz Using a
DSP processor makes it much easier
to control and tune your system.
PHCOAX Woofer Connection
(HP filter at 80Hz at 12dB per octave MINIMUM)
System Design - Passive/Active
PHCOAX Tweeter Connection
(to Tweeter)
Midbass Connection
(From Amp)
OUT OF PHASE!!
