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NOTE that System Power Sequencing prevents unexpected sounds
from your system (pops, clicks, thumps), make sure to power ON your
ACTPRO-HD series loudspeakers in the proper order. Improper
sequencing while powering ON your equipment can damage the
loudspeakers. Power the loudspeaker system ON and OFF in the
proper order to avoid unexpected sounds and damage to your
loudspeakers.
• Power On Sequence - Turn ON all source devices (CD players,
mixers), turn ON the ACTPRO-18S HD subwoofer, then turn ON all
ACTPRO-HD Full-range loudspeakers.
• Power OFF Sequence: Turn OFF all ACTPRO-HD Full-range
loudspeakers and then ACTPRO-HD subwoofers, then power
down all sourcedevices.
AC MAINS
Insert the IEC power cord fully into the IEC inlet on the power amplifier
module.
NOTE: Turn OFF the power switch on the ACTPRO-HD loudspeaker before
connecting the AC power cord. The correct AC line voltage should be
selected on the rear panel. For operation in the United States, leave the
voltage selector on the amplifier set to 115V. Connecting to the wrong line
voltage will damage the amplifier and may create the risk of electric shock.
AC Mains Disconnection - Turn the AC power switch to the off position.
To remove the AC power cord, grasp the IEC connector’s plastic body
and gently remove the IEC connector from the socket by pulling it
straight toward you.
AC SELECT SWITCH
Make sure AC Select Switch is set to voltage appropriate for your country.
NOTE: Connecting ACTPRO-HD powered loudspeakers to AC voltage not
matching to AC Select Switch will damage the amplifier and may create
the risk of electric shock.
BBE® ON/OFF SWITCH
This switch is used to activate the BBE® processing built into your
ACTPRO-HD powered subwoofer. The switch will illuminate when
turned ON clearly indicating that the BBE® processing is activated.
BBE® processing on the ACTPRO-212S HD, ACTPRO-18S HD and
ACTPRO-18F HD subwoofer affects both the sound of subwoofer
itself, as well as the stereo HP (High Pass) outputs included in BBE® section.
HF PROCESS
Use this knob to adjust the high frequency portion of the BBE® processing.
ACTPRO-1515 HD: HF Process will affect the mid and high frequencies.
ACTPRO-212S HD, ACTPRO-18S HD and ACTPRO-18F HD: HF Process
will affect the same frequencies on a full-range speaker connected to the
Hi-pass outputs. The HF PROCESS will provide clearer mids and highs
and will enhance the vocal reproduction of the loudspeaker connected
via the HP XLR
outputs.
LF CONTOUR
Use this knob to adjust the low frequency portion of BBE® processing.
ACTPRO-1515 HD: LF Contour will affect low frequencies.
ACTPRO-212S HD, ACTPRO-18S HD and ACTPRO-18F HD:
LF Contour will process the subwoofer and low frequencies of full
range speakers connected to the HP outputs. The LF CONTOUR
will enhance the bass output of your subwoofer and the loudspeaker(s)
connected to the HP outputs.
FRONT LED
Use this switch to turn the blue LED light on the B-52 logo badge
on or off.
BBE SONIC MAXIMIZER
Benefits: The BBE® Sonic Maximizer circuitry built-in to the
ACTPRO-1515 HD,
ACTPRO-212S HD,
ACTPRO-18S HD and
ACTPRO-18F HD takes already great sounding systems to the
next level by adding punch and depth that can be both heard and
felt. BBE® processing will dramatically improve the clarity and
intelligibility of vocals, musical instruments and will add overall
depth to the audio program. A control for both the LF (low frequency)
Contour and HF (high frequency) Process is provided to adjust the
exact amount of BBE® processing added to your mix.
ACTPRO-1515 HD: The BBE circuit adjusts Low Frequency range of
the speaker (via the LF Contour control) and High Frequency range of
the speaker (via the HF Process control).
ACTPRO-212S HD,
ACTPRO-18S HD and ACTPRO-18F HD :
The BBE circuitry on ACTPRO-HD subwoofers allows you to process
both the subwoofer itself and the active full-range speakers connect
connected to it using the high-pass XLR outputs provided on the
subwoofer amplifier. The LF Contour control adjusts the low frequency
processing of both the subwoofer and connected full range speaker,
while the HF Process control adjust the high frequency processing being
fed to the fullrange speaker connected to it.
How it works: Phase and amplitude integrity is essential to accurate
sound reproduction. These relationships define a sound’s “sound”.
When these complex relationships pass through a speaker, the proper
order is lost. The higher frequencies are delayed. A lower frequency
may reach the listener’s ear first or perhaps simultaneously with that of
a higher frequency. The listener perceives this loss of sound integrity
in the reproduced sound as “muddy” and “smeared.” BBE® Sound,
Inc. conducted extensive studies of numerous speaker systems over a
ten year period. With this knowledge, it became possible to identify
the characteristics of an ideal speaker and to distill the corrections
necessary to return the fundamental and harmonic frequency structures
to their correct order.
Tips for using: A single function button switches the BBE® process
on or off, which is useful for comparing the processed sound to the
unprocessed sound. The switch illuminates red when the BBE® process
is on. The LF Contour control is for adjusting the level of phase corrected
low frequencies in the program material. The HF Process control adjusts
the level of phase corrected high frequencies in the program material.
On the
ACTPRO-212S HD,
ACTPRO-18S HD and ACTPRO-18F HD,
the HF Process only affects powered speakers connected to the
High Pass XLR Outputs included in the BBE® section of
ACTPRO-212S HD,
ACTPRO-18S HD/ACTPRO-18F HD
amplifier, while the LF Contour affects both the powered full-range
speakers and the subwoofer itself.
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