INSTALLATION GUIDE
Ellipse Blend

Fishman Acoustic Matrix and Martin Gold Plus—Rev. 5.0, 5.3:
1. Remove the components from the endpin preamp
as indicatedAdd-on soundhole electronics for
the Fishman Acoustic Matrix Natural I,
Acoustic Matrix Natural II
and Powerjack systems.
Compatible with moststandard flat-top guitars.
May not drop-in fit with some instruments*.

2. Solder the new 2k resistor (supplied with your VTB) to
the preamp circuit board in place of the capacitor

System Requirements
These instructions support installation with the following systems:• Fishman Acoustic Matrix Natural I &II—between Rev.
4.0 and 6.0• Fishman Powerjack—Rev. 2.3• Martin Gold Plus—between Rev. 4.0 and 6.0• Martin Active Jack—Rev. 2.3
Please note that revision numbers for each pickup are printed
on the circuit board inside the endpin jack.
Do not attempt to install the Ellipse Blend withthe discontinued Acoustic Matrix Natural or theAcoustic Matrix Hot preamps or similar versionsof the Martin Gold Plus systems. These systems
can be identified by the rectangular metal box
that encases the electronics.

3. Thread cable assembly through barrel and solder as indicated.

Installation
WARNING!
Installation of the Ellipse Blend is meant to be performed only
by a professional repairperson. The heat from a soldering ironcan easily overheat the circuit board traces and destroy thesurface-mount components on the endpin preamp. Use only a
low wattage (30 watts max) soldering iron and do not overheat
the components.
Remove the Endpin preamp and locate the revision number
on the circuit board. Follow the soldering instructions that
apply to the revision number.
Fishman Acoustic Matrix and Martin Gold Plus—Rev. 6.0:
1. Remove “000” jumper.

2. Thread cable assembly through barrel and solder as indicated.

*Taylor guitars with NT neck or Larrivee guitars.

Fishman Acoustic Matrix and Martin Gold Plus—Rev. 4.0:
1. Remove the components from the endpin preamp asindicated

2. Solder the new 2k resistor (supplied with your VTB) tothe preamp circuit board

3. Thread cable assembly through barrel and solder as indicated.

Fishman Powerjack and Martin Active Jack—Rev. 2.3:
1. Remove the “000” jumper from the endpin preamp.

2. Thread cable assembly through barrel and solder as indicated.

3. Peel back the release film on the bottom of the preamp
module and fasten the preamp to the underside of the soundhole. The adhesive gains maximum hold after 24 hours.
4. You may separate the control module from the magnetic
base for better access inside the guitar. To separate themodule, locate the tab on the right edge of the unit and push
it down, toward the back of the instrument. Once you feel themagnet let go, swing the module towards the center of thesoundhole, then separate the left-side magnet.
5. Secure the wires to the side of the guitar with the included
adhesive backed clips and cable tie (figure 1).

Microphone Positioning
You can position the microphone to find the “sweet spot”
inside the instrument. Take the time to experiment withmicrophone placement until you find the position that works
best in the instrument.
Plug in the guitar and move the blend slider to the left for mic
only. Start with the mic capsule so that it faces the back of theguitar. Move the mic closer to the sound hole for more bass.
Turn the capsule toward the sides of the instrument forless bass (figure 2).

Preamp Module Installation
1. Locate the module flush with the edge of the soundhole,on the bass side. Center the module between the transverse
brace and the bass-side x-brace (figure 1).

Less Bass

More Bass

Figure 2.

Microphone Trim Control
A small circular potentiometer is recessed below the volumeslider and can be accessed with a small slotted screwdriver.
This is a “set it and forget it” control. Use it to calibrate themicrophone balance in relation to the pickup. Set the Blend
slider to the center position and adjust the trim control until
both the microphone and pickup levels are balanced toyour liking (figure 3).

Figure 1.
2. Sand off any lacquer and/or buffing compound from theinside edge of the soundhole. Then, clean this surface withrubbing alcohol. Let dry.
Note: For the strongest bond we recommend you now
apply a water-based primer/sealer to the bare wood inside
the soundhole. Let the primer/sealer dry before continuing.

Figure 3.

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