MiniFlex: Frequently Asked Questions

Q1. What is your Warranty like?
A1. We offer an unconditional 30 Money Back guarantee on all of our MiniFlexMic Products. You can buy with confidence and without risk, if at any time during the first 30 days you own your MiniFlexMic you are unsatisfied or unhappy in any way we will replace it or give you a full refund of the purchase price.

Q2. What happens after the 30 day warrany is up?
A2. We are always here to help you get the best performance from your 2Mic, if your purchase is not operating properly we will assist you via phone or email to correct any problems you may be experiencing. If we are unable to correct the problem with these methods the MiniFlexMic is covered by a full One Year Repair Warrantee for parts and workmanship. If your MiniFlexMic fails to perform to your satisfaction, simply contact us for a "Return Authorization Number", (RA#) and send us your MiniFlexMic. We will repair or replace your product.

Q3. Do you ship to Europe, Russia, Asia, or Australia?
A3. Yes, we ship world-wide. We use cost shipping calculated by the United States Postal Service, (USPS) in U.S. Dollars, (USD).
• Domestically we ship via USPS Priority Mail. Overseas orders we ship via USPS International Express. Domestic shipping is also calculated by the USPS and added to the total of your order. (Shipping rates may change without notice, based on, and depending on our cost for postage).

Q4. Do you ship UPS or FedEx?
A4. No, our world headquarters are located in a rural area and these methods are not currently available for us at a reasonable rate. However, should you specifically request shipping by these carriers, we can make arrangements and you will be billed the actual rate plus a 10% handling fee.

Q5. What is the difference between a MiniFlex 2Mic and a pickup?
A5. The 2mic uses two separate microphone elements that sense the movement of air in the same way our ears sense sound. The 2Mic will reproduce all of the overtones that make acoustic guitars sounds so wonderfully full and rich. Pickups sense only the vibration of the strings or guitar body, and only reproduce fundamental tones. Pickups may sound "good" - but they will never compare with the natural tone quality of a mic.

Q6. What is the difference between the 2Mic and other microphones?
A6: The 2mic is the only microphone system designed specifically for acoustic guitars. The 2Mic uses a patented design that combines two separate mic elements within a single system to produce better tone quality and reduce feedback. The 2Mic is also the only microphone designed to connect directly to the endpin output jack so that, once installed, no part of the 2Mic will contact a vibrating surface of the guitar.

Q7. Will installing a MiniFlex 2mic require modifications that affect the natural tone quality of my guitar?
A7. No, there will be no change to the natural acoustic sound quality of a guitar by installing any of the MiniFlex 2mic models.

Q8. Do I need a professional luthier to install a Miniflex 2mic?
A8. For the endpin mounted 2Mic models (Models 1, 4, 5, & 7), we suggest having a professional luthier enlarge the hole in the tailblock to a 1/2 inch (12mm) diameter. If the hole in the tail block has already been enlarged, then any guitarist should be able to install the 2Mic themselves. Drilling the hole in the tailblock is not difficult for someone skilled in woodworking and having the proper tools: an electric drill, brad point drill bits, and/or a 1/2" tapered reamer. Both of the quick mount 2Mic models (Models 2 & 3) can be easily installed by any guitarist.

Q9. How does the MiniFlex 2Mic control feedback?
A9. The two separate mic elements of the 2Mic design use a unique and proprietary phase cancellation process to help control feedback, and will produce approximately 40% more volume before feedback than any single mic system.

Q10. Is the 2Mic feedback proof?
A10. No, the 2mic is not completely feedback proof. For performances using professional quality equipment on larger stages, the 2Mic can produce as much or more volume before feedback than piezo pickups. But when the 2Mic is used in smaller rooms and noisy environments, there can sometimes be feedback issues. When the 2mic does feedback, it is generally in the lower frequencies, which are slower to rise and do not hurt your hearing compared to the scream of high frequency feedback.

Q11. Can I use the 2Mic with electric guitar effects devices, DI boxes, and Equalization equipment?
A11. Yes, for all of the 2Mic models that have a 2 conductor output. These currently are the Models 1, 2, 3, & 4.

Q12. What is the battery life for the Model 1?
A12. We recommend that batteries be changed every two years, but this is a very conservative suggestion. With even frequent use, the shelf life of the battery is the true determining factor for when to change the battery. The sign of a weak battery for the 2mic is when the output decreases and the tone quality begins to distort. When such a volume drop or distortion occurs, we recommend you change the battery ASAP.

Q13. Is there a switch to turn on the battery for the 2Mic?
A13. All MiniFlex 2Mic battery operated models are designed so the output jack acts as a switch to turn the battery "on". For end pin mounted models, this will be the end pin output jack. For Models 2 & 3, this will be the output jack on the plastic service module.

Q14. Is there any possibility of battery failure with the Model 1 or Model 4 during a performance?
A14. No, there is no potential for the 2Mic failing during a performance due to a depleted battery. The Model 1 uses 2 AA batteries and operates at 3v. The Model 1 will perform effectively down to an operating voltage of 1.3v. Output from the 2mic will begin to diminish when the voltage drops below 2.5v, and tone quality will begin to distort below 1.3v. But this deterioration will occur over several days, or weeks, and provide plenty of advance warning that the batteries are becoming weak.

Q15. Can I change batteries in the Model 1 or Model 4 without removing the 2Mic assembly?
A15. On the Model 1 - No. It is best to remove the complete mic assembly when changing the batteries. A simple installation and removal tool is provided with the Model 1 to assist you in changing the batteries.

Q16. What is the purpose of the white dot on the windscreen for the Model 1, the Model 2, the Model 4, and the Model 5?
Note: The Model 3 and the Model 7 do not have dots on the windscreen?
A16. The white dot on the windscreen indicates the active direction of the mic. It is important to point this white dot toward the interior of the guitar. Do not position the mic near the soundhole so that the white dot points out of the soundhole towards the strings as this will reduce tone quality and potentially cause feedback. For the Model 3 and the Model 7 the active face of the mic points in line with the gooseneck, so there is no dot needed to determine the active direction for these mic elements.

Q17. How should the mics be positioned inside the guitar?
A17. It is important to have one mic positioned near the soundhole, while the second mic is positioned towards the interior of the guitar. For end pin mounted models (Models 1, 4, 5, & 7), there are two separate goosenecks, with the mic on the short gooseneck positioned approximately under the bridge and pointing towards the soundboard, while the mic on the long gooseneck located in or near the soundhole. For the quick mount Models 2 & 3, where both mics are attached to a single gooseneck, the mic in the center of the gooseneck should face across the soundhole, while the mic on the end of the gooseneck faces toward the interior of the guitar body.

Q18. Will re-positioning the mics change the sound of the MiniFlex?
A18. Yes, and we encourage musicians to experiment with different mic positions until they find the locations which produce their desired tone quality. When re-positioning the mics, it is important to remember that it is the relationship between the two mics that is most important. For all of the models with two goosenecks, it is most easy to change the position of the mic on the long gooseneck near the soundhole. If you cannot achieve the desired tone quality by adjusting the mic on the long gooseneck, re-position the mic on the short gooseneck and then again try every possible location near the soundhole. Repeat this process as many times as needed until the best possible sound quality is found.
Note: For Models 1, 4, & 5, there is a small bump just below the windscreen for the mic on the shorter gooseneck that indicates the active face of the mic. This bump will help to feel which direction this mic is pointing, since it is not possible to look inside the guitar for the white dot on the windscreen. For the Models 2 & 3, the mic in the center of the gooseneck is fixed, and adjustments can only be made to the position of the mic on the end of the gooseneck. But making these adjustments can sometimes have a dramatic effect on the overall tone quality.

Q19. What are the differences between the 2Mic models for guitar?
A19. There are six different 2Mic models for acoustic guitar, which have 3 overall differences in design:
a. Mounting method (end pin mounted, or quick mount).
• Models 1, 4, 5, & 7 are end pin mounted and will be installed through a 1/2" (12mm) diameter hole in the tailblock of the guitar.
• Models 2 & 3 are quick mount designs where the mics are inserted through the soundhole.
b. Character of tone quality from each style of mic. (we currently use 3 different styles of mic elements)
• Models 1, 2, & 4 use mics with a frequency response of 80 - 15K Hz, and have some pre-E.Q. to help reduce the heavy bass response that sometimes occurs with mics inside acoustic guitars. The mics produce a rounded type of tone with a warm, rich bass.
• Models 3 & 5 use mics with a frequency response of 60 - 16K Hz that have additional EQ to control bass response. These mics tend to have a clear & precise tone quality and need the least amount of EQ.
• Model 3 is designed specifically for nylon stringed and vintage steel string guitars that do not have strap buttons and where absolutely no modification of the instrument is possible.
• Model 5 is pre-EQ'd specifically for professional performance applications where the 2Mic is connected directly to the P.A. mixer.
• Model 7 is designed for studios, with the broadest frequency response (50 - 15K Hz) and the quietest ambient sound level. There is no pre-EQ with the Model 7, and should be used with a high quality professional mixer
c. Method for how the 2Mic is powered (battery or phantom powered)
• Models 1, 2, 3, & 4 are battery operated and have an unbalanced 2 conductor output. These are the most versatile 2mics in that they will work with a wide variety of amps, P.A. systems, effects devices, and other amplification gear.
• Models 5 & 7 are phantom powered are design specifically for professional application through P.A. mixers.

Q20. What is the output impedance of the 2Mic?
A20. Models 1, 2, 3, & 4 are "hybrid mics" that have an output impedance of 3500 ohms. This is mid-range between normal low impedance mics (500 - 1K ohms), and high impedance pickups (8 - 12K ohms). This midrange impedance of 3500 ohms permits such 2mic model to be versatile for working with a wide variety of amplification devices from electric guitar amps to P.A. systems, and electric guitar effects devices.
• Models 5 & 7 have an output impedance of 500 ohms, and need to be used with a good quality P.A. mixer and amplification gear having inputs valued to receive a low impedance microphone.

Q21. What is the purpose of the 1/4" - XLR adapter that is included with some 2Mic models - Models 1, 2, 3, and 4?
A21. This adapter will permit a standard mono guitar cable to connect with an XLR input on an amp, P.A. mixer, or DI box. There is no standard for how the input impedance on amplification equipment is valued, and this is particularly true for older P.A. gear. When the gain on your amp or P.A. needs to be increased to a level where there is excess hiss or distortion, this is an indication of a mismatch between the output impedance of the 2Mic versus the expected input impedance of the amplification device. Using this adapter to enter an XLR input, but this adapter does not alter the signal like a transformer or direct box.

Q22. There is no XLR input on my amp or P.A., and it appears there is an impedance mismatch as described in #20 above. Is there any way I can correct this problem.
A22. Yes. Try using a battery operated effect device, equalizer, or DI between the 2Mic and amp/P.A. Often, these devices will provide a slight boost for the output impedance of the 2Mic and solve this problem. Using the XLR adapter will reduce the mismatch and improve sound quality.

A23. Can I plug the 2Mic directly into a P.A. snake, or should I use a direct box?
A23. Models 5 & 7 use a fully balanced 3 conductor output, and can be plugged directly into a snake. For Models 1, 2, 3 & 4, it is best to use a direct box to plug into a snake and prevent signal loss at the P.A. board.

Q24. Can I use a MiniFlex 2Mic and a pickup in the same guitar?
A24. Yes. The Model 4 is specifically designed for combining a pickup and 2Mic in the same guitar so that both signals are kept independent and exit the guitar via a single end pin output jack that travels to the amp or P.A. through a stereo "Y" cable. Our Model 4 DM comes with a Dean Markley ProMag Grand Humbucker pickup already wired together with the 2Mic.

Q25. If I already have a pickup installed in my guitar, can I use the MiniFlex 2Mic with this pickup?
A25. Yes, you can use the Model 4, or you can:
• Use the Model 2 or Model 3, which are quick mount designs where the mics are inserted through the soundhole.
• Install any of our end pin mounted models (Models 1, 5, or 7) through a separate hole in the tailblock of the guitar. This is becoming the preferred choice of combining a pickup and 2Mic in a guitar for most professional guitarists. Both the pickup and 2Mic are completely independent, and there is no need for special wiring inside the guitar or using "Y" cables to connect with the amp or P.A.

Q26. Are the Pickup and 2Mic mixed into a single signal with the Model 4?
A26. No the Pickup and 2Mic are independent signals that share a common ground. A stereo cable (usually a "Y" cable) is needed to route these separate signals to an amp or mixing board. These signals can go to different pieces of equipment provided there are no grounding issues with the electrical current.

Q27. If I use a standard mono guitar cable with the Model 4, what will happen?
A27. Using a standard mono guitar cable with the Model 4 will active the signal on the tip of the output jack, which is normally the pickup (the 2mic will not be activated with a mono guitar cable). This wiring can be reversed so the 2mic is on the tip terminal of the output jack, and the pickup is on the ring terminal (Model 4a).

Q28. I am using a stereo cable with my Model 4, and get great sound from only one source…the pickup or 2Mic, and am getting no sound from the other source or just an intermittent signal. What is the problem?
A28. Most likely the strap button on the output jack is preventing the ring terminal on the jack from fully engaging the ring terminal on the cable. Remove the strap button, insert the stereo cable and test again. If the 2Mic works fine without the strap button, the stop nut on the inside of the end pin output jack needs to be adjusted so that more of the jack will be exposed outside of the guitar. This will permit the stereo plug to fully engage the stereo end pin output jack of the 2Mic.

Q29. My sound from the 2Mic is very "boomy", with too much bass. What can I do to correct this?
A29. This is a common problem for some guitars with internal mics which can be solved in three possible ways:
#1. Try repositioning the mics to reduce the bass response. For end pin mounted models, this usually means re-positioning the mic on the short gooseneck - so that it is further away from, or not pointing directly towards, the soundboard. Try placing this mic in the center of the soundbox and pointing towards one of the sides (ribs).
#2. Add equalization from the mixer, amp, with a DI box, or some other separate Equalization device.
#3. Exchange your mic for a Model 3 or Model 5, which has greater pre-equalization to reduce the bass response.

Q30. Will using a soundhole cover help to reduce feedback, and will it affect the tone quality from the 2Mic?
A30. Yes, many guitarists have reported that using soundhole covers, such as the "Feedback Buster" do help to reduce problems with feedback in difficult performing environments, and that there is no change for the tone quality of the 2mic.

Q31. I am playing with my band in a small club (bar) and while the tone quality is great, there are feedback problems from the 2mic when we perform. How can I correct this?
A31. Small rooms, and particularly those with lots of ambient noise are the most difficult environment for feedback control with any mic, including the 2Mic. Using a soundhole cover (Feedback Buster) may help, but the best solution may be to use the Model 4 with a separate pickup, and particularly with a magnetic pickup, such as the Model 4DM. Magnetic pickups do not produce a great acoustic tone, but are feedback proof. Using a magnetic pickup to produce the bulk of the volume, with a bit of 2mic mixed in to help give your sound "some air" - is the best solution for dealing small noisy rooms like bars.

Q32. I have a very valuable guitar that I want to amplify, but I do not want to make even the least modification. Is there a 2Mic model that will do this?
A32. Yes, the Model 3 is designed specifically for historical and valuable instruments that cannot be changed in any way. You should also ask for the optional clamp attachment to avoid having to use the small piece of self adhesive Velcro that normally attaches to the heel cap of the guitar.

Q33. I have an older single mic MiniFlex model. Can this be converted into a 2Mic?
A33. No, but we do offer a discount for anyone trading in an older single mic MiniFlex for a new 2Mic model. Please contact our office for details - email:, or tel: 530.284.1689.

Q34: What is best positioning of the MinifFlex Model 1 mics?
A34: Install the mic on the long gooseneck in the sound hole, and as close to the strings as possible - with the mic pointing slightly back into the soundhole anywhere on the 90o arc that goes approximately from the center of the bridge to the middle of the waist. The white dot on windscreen indicates the active face of the mic.

When adjusting the mic position, be careful to handle the gooseneck - approximately 2 inches, or 50cm, below the windscreen. The gooseneck is strong, but the mic is lightly attached to the gooseneck to provide shock mounting.  Also note the "bump" on the gooseneck just below the windscreen. This is helpful for using "feel" in determining the direction of the active face of the mic on the end of the short gooseneck while the Model 1 is installed within the guitar.  

We recommend placing the mic on the short gooseneck approximately 3/4", or 20cm, below the soundboard within the vicinity of the bridge, and pointed at an angle towards the soundboard.

When our customers have reported "improved results" by re-positioning the mics, they have typically moved the mic on the short gooseneck away from the center of the soundboard,  and towards the treble side, and with the mic pointing more towards the side - rib. This is usually done to decrease the strength of the lower frequencies - that is, to reduce bass response.

Top of Page