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All specifications are subject to change without notice.
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EARTHQUAKE SOUND • MEGA BASS DIGITAL SYNTHESIZER 9WWW.EARTHQUAKESOUND.COM
INSTALLING MEGA BASS
Placement and Mounting
Placement: MEGA BASS needs to be installed in the signal path as close to your source unit as possible, but
definitely before any crossover circuit. Although MEGA BASS is close to the source unit's signal, the chassis is usually
mounted in the rear of the vehicle as close to the amplifiers as possible. We recommend connecting the MB1 to the
EQ7000PXi SUB OUT and have it drive the bass amplifier.
Mounting: Once you have selected a permanent mounting location, position the unit and mark the appropriate
mounting holes with a pen or pencil. Before doing anything else, make sure you are not about to drill a hole in a gas tank
or pierce existing wires or cables. Now drill a small pilot hole and mount the unit.
Electrical Connections
WARNING: Failure to disconnect the negative terminal of your battery prior to installation may result in
severe shock or damage of you system components.
Remote In: Connect a 22 to 18 gauge wire from the head-unit's remote turn-on to the REMOTE-IN connector of
MEGA BASS.
Positive(+12v) Connection: Insert and 18 gauge or larger wire into the connector labeled POWER on the
connector of MEGA BASS. Connect it to a good constant source of 12 volts, fused at 1-amp.
Ground Connection: Use the same gauge wire you did for the 12v connector on MEGA BASS's NEGATIVE
terminal of the battery, a ground bus, or a verified ground location. The factory head unit ground is not a good ground.
When all connection are complete you may reconnect the negative battery terminal it's original state.
Placement and Mounting
Bass Control Center Adjustments
REMOTE BASS CONTROL INSTALLATION
Placement and Mounting
The remote bass control may be mounted under the dash using its own bracket or through a custom hole in the
dash. It should be within reach of the driver.
Installation
The bracket is attached to the remote and mounts with two screws which attach to th underside of the dashboard,
or where ever you prefer. Find your preferred location, mark holes, drill pilot holes and then mount the unit.
ADJUSTING THE BASS CONTROL CENTER
The bass response in a system is affected by four factors:
1. The acoustics of the vehicle
2. The locations of the speakers
3. The music on the tape, CD or source unit
4. The speakers and or speaker enclosures
Because of the variations in the recording process we developed MEGA BASS to help restore any low frequencies lost
during the recording process or from source units, however, the acoustics of various environments are different. With this
in mind our engineers developed this fantastic system.
The SWEEP control allows you to select a center frequency between 27 and 63Hz. The WIDE control then allows
you to control the shape of the filter centered around the SWEEP frequency.
SETTING THE BASS OUTPUT CONTROL
MEGA BASS is the most powerful bass component on the market. It is able to leap to dramatically enhance any
audio system to audiophile status or preference. MEGA BASS is equipped with several different bass output selections. If
you should need to change the settings, please use the chart below for guidance. Before making any changes try listening
to the factor settings...they may be just what your looking for.
DPF D.C. Protection Filter
Many car audio systems truly push the limits of their subwoofer, without really knowing it. Tuned
enclosures affect the roll-off of many speakers, yet lots of source material forces the speakers to play lower
than expected. The net result i s wasted amplifier power and damaged speakers. MEGA BASS's DPF
Overdrive is a programmable subsonic filter. It allows you to only let the speaker play as low as it should be
played. Because every system is different, we allow you to change the DPF roll-off frequency to whatever you
choose.
Setting
2.5 Volt
5 Volt
7.5 Volt
10 Volt
RECOMMENDED SETTINGS
Amplifier Input Voltage
3 Volts or less
5 Volts or less
7.5 Volts or less
10 Volts or less
Minimum Speaker Size
8"
10"
12"
Some Kind of Beast
EQ7000PXi
PH2000WD/1
Remote Bass Control
SUB OUT
Remote Bass Control
PH2200W/4