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1. Inputs:  

The inputs of the MEMBX use a balanced input circuit to minimize induced noise. They are also designed 

to handle very high signal voltages up to 15V

2. Outputs:

 These RCA connectors should be connected to the next component after the MEMBX such as a 

crossover, equalizer or amplifier. Remember, the MEMBX should go inline before a crossover

3. Remote Control
 

3A. PMF Subsonic Filter Control:

 Control the PMF subsonic filter to eliminate unwanted noise. This 

control allows you to set frequencies from 35Hz-80Hz. A setting of approximately 33Hz is typically used on most 
systems.  If you want to protect your system more you can adjust the frequency higher.

 

3B. Bass Level Control: 

Adjust the level of the bass produced by your system.

4. Power Connector: 

Be sure to secure your connections to prevent shorts and damage to your MEMBX unit.

5. Para-Bass Connector: 

These knobs control the para-bass functions of the MEMBX. The SWEEP knob allows you 

to pick the center frequency that you want the MEMBX to maximize. The WIDE knob adjusts how wide of a 
frequency range the MEMBX will impact.

6. Bass Maximizer Indicator: 

These LED indicators flash when the bass maximization circuit is activated

7. Power ON LED: 

Notifies that power to the unit is present. 

8. Input Grounding:  

For most systems you can leave this jumper set in the BALANCED position. In some 

systems, the source unit may look for a ground through the RCA connectors. If this is the case, you should 
changed the jumpers to the UNBALANCED position. 

9. Ground Isolation Jumpers:

 Occasionally alternator whine may appear in a system due to improper 

grounding.  To help resolve this situation the MEMBX provides alternative grounding connections.  Make sure 
your system is OFF before moving these jumpers. 

10.Bass Output Control Jumpers:

 Not all systems are designed the same. Some systems are designed for 

massive SPL performance, others are more refined. The Bass Maximizer can either increase or decrease the 
signal voltage of the Bass Restoration Circuit. Depending on your system, you may change these jumpers to a 
higher or lower setting to maximize your bass output and protect your speakers. In most systems the factory 
settings are appropriate but feel free to adjust them to your preferred setting. 

MEMBX

DIGITAL BASS EXPANDER

Signal Connection Continued

Functions

OUTSIDE CONTROLS

INSIDE CONTROLS

Functions Continued

PFM Subsonic Filter Control:  

Fine tune the bass response of any system. Eliminate subsonic interference 

using this filter for enhanced clarity.

Bass Output Control: 

Throttle your bass up and down to produce deep clear bass.  This control maximizes the 

bass output of any system while limiting destructive bursts preventing damage to your speakers.

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Summary of Contents for MEMBX

Page 1: ... H E U N I T E D S T A T E S M E M P H I S T E N N E S S E E S I N C E 1 9 6 5 8 0 0 4 8 9 2 3 0 0 w w w m e m p h i s a u d i o c o m 1 2 2 G a y o s o Av e M e m p h i s T N U S A M E M P H I S C A R A U D I O U S A M E M P H I S A U D I O D E S I G N ED AND DEVELOPED IN THE USA MEMPHIS TN UNITED STATES S I N C E 1 9 6 5 D E S I G N E D A N D D E V E L O P E D I N T H E U S A M E M P H I S T N U...

Page 2: ...evel inputs and a 9Voutput allowing you to integrate the piece with a factory and aftermarket systems Bass Driver The MEMBX contains a bass driver circuit that accurately recreates and injects low frequency information back into the signal path This gives more bass impact to any audio saved in a compressed format Bass Equalization Circuit This feature accurately contours the restored bass to your ...

Page 3: ...r most systems you can leave this jumper set in the BALANCED position In some systems the source unit may look for a ground through the RCA connectors If this is the case you should changed the jumpers to the UNBALANCED position 9 Ground IsolationJumpers Occasionally alternator whine may appear in a system due to improper grounding To help resolve this situation the MEMBX provides alternative grou...

Page 4: ...y Input should match the source and output should match the sensitivity of the host Check the crossover settings Make sure they are correct For high Q systems set the crossover half an octave above the desired point For low Q systems set it 1 octave or more above the point If you experience whining or engine noise Verify that the GND connection is secure and that the wire is not too thin or unnece...

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