FAQ - SonoFlex Instrument Microphone

FAQ - SonoFlex Instrument Microphone
Getting Connected
Q1. Wired or wireless — which setup do I need?

SonoFlex works in two setups. Choose based on how you plan to perform:

  • Wired: Connect directly to a mixer, audio interface, or preamp via the CLV29 XLR adapter. Requires 48V phantom power (IEC 61938).
  • Wireless: Connect to a wireless bodypack transmitter using the correct adapter cable. Refer to Q5 for cable and switch mode selection.
SonoFlex requires a power source — it cannot be plugged directly into a portable speaker that does not supply phantom power. Speakers such as the Bose S1 Pro Plus and Roland Cube Street have XLR inputs but do not provide phantom power. SonoFlex will not function in this configuration.
Q2. How do I set up SonoFlex in wired mode?

Use the CLV29 XLR adapter to connect SonoFlex to any 48V phantom power source compliant with IEC 61938 standards.

Compatible Power Sources

  • Audio interfaces with phantom power
  • Mixing consoles
  • Microphone preamps
  • Specialised speakers with 48V phantom power support
Important: The CLV29 adapter is designed exclusively for SonoFlex. Do not use it with other microphones or devices.
CLV29 XLR adapter for SonoFlex wired setup

CLV29 XLR adapter — required for all wired connections with SonoFlex.

Mounting & Installation
Q3. Which mount fits my instrument?

Use the table below to find the correct mount for your instrument. If your instrument is not listed, contact support with a photo and model name — we can evaluate existing options, mounts under development, or feasible modifications.

SonoFlex mount lineup

SonoFlex mounting options: CM01 through CM08.

Part Code Mount Name Aperture Weight Application
CM01 Bell-mount mic clip 4 mm 18 g Saxophone, Trumpet
CM02 Violin / Viola mic clip 35–71 mm 31 g Violin, Viola, Mandolin
CM03 Guitar mic clip 70–126 mm — Nylon / steel string guitar
CM06 Elastic mic strap 250–650 mm 14 g Oboe, Clarinet, Bassoon, Flute
CM07 Universal mic clip 5 mm 20 g Music stand, Bell part of winds
CM08 Suction mount N/A 9 g Polished surfaces

* CM03 must be used with a space reducer to switch between aperture ranges.

Q4. How do I adjust and lock the microphone angle?

There is no fixed angle limitation — adjust freely based on your needs. Align the groove on the base with the cross-shaped mount, then rotate clockwise until you hear a "click" to secure it.

Available Gooseneck Positions

  • 12 o'clock
  • 3 o'clock
  • 6 o'clock
  • 9 o'clock

This makes it easy to fine-tune microphone placement for any instrument's sound projection angle.

Wireless Cable & Switch Mode
Q5. Which cable and switch mode do I need for my wireless system?

The correct cable and switch mode depend on your wireless transmitter's connector type and circuit design. Use both tables below to confirm your setup.

Adapter Cable Options

SonoFlex wireless adapter cable lineup

SonoFlex adapter cables for wireless transmitters: CW02, CW03A, CW041A, CW041B.

Part Code Adapter Type Compatible Brand Wiring Mode Pin Definition
CW02 Microdot (m) → 3.5mm DPA 2-wire View detail →
CW03A 3.5mm → 3.5mm Sennheiser 2-wire View detail →
CW041A TA4F → 3.5mm Shure 3-wire View detail →
CW041B TA4F → 3.5mm Mipro 3-wire View detail →

System Compatibility Overview

Wireless Bodypack Connector Type SonoFlex Cable Switch Mode Additional Adaptor
Sennheiser / EverSync SP-10 3.5mm CW03A 2 —
DPA Microdot 2 pin CW02 2 —
Shure TA4F 4 pin CW041A 3 —
Mipro TA4F 4 pin CW041B 3 —
AKG TA3F 3 pin CW03A 2 Purchase adaptor →
Audio-Technica Hirose 4 pin CW03A 3 Purchase adaptor →

Some transmitter models have multiple connector options. Always verify against your specific transmitter's spec sheet and pin definitions before purchasing.

Q6. What does the 2 / 3 switch on the base do?

The 2 / 3 switch selects the wiring mode — either 2-wire or 3-wire — to match your wireless transmitter's power supply and signal circuit. Setting the correct mode ensures SonoFlex is properly powered and delivers stable, clean audio.

What Each Mode Does

  • Ensures the wireless transmitter can properly power SonoFlex
  • Maintains stable operation and optimal sound quality
Using the wrong mode may cause abnormal volume levels, unstable signal, or no audio. Confirm the correct mode using the compatibility table in Q5 before use, and avoid switching during a performance.
Troubleshooting
Q7. The signal is too loud or distorted with my wireless system — what should I check?

Overload, excessive noise, or distortion when using SonoFlex with a wireless system (such as Sennheiser AVX via CW03A) is usually caused by a gain mismatch. Work through these steps in order:

Step 1 — Lower transmitter input gain

  1. In the transmitter menu, find Input Sensitivity or Gain
  2. Enable any Attenuation / Pad option if available
  3. Most users need to set this to the lowest level for a correct signal range

Step 2 — Check receiver output level

  1. Confirm your mixer or speaker input is set to Line Level, not Mic Level
  2. A Mic Level input will amplify the signal a second time, causing overload

If the issue persists, contact support with your mixer model and a screenshot of your settings.

Q8. How do I stop feedback during a performance?

Feedback happens when the microphone picks up speaker output, which is re-amplified and loops back — producing a sharp, piercing tone. The following adjustments can help:

How to Reduce Feedback

  • Reposition the microphone so it does not face the speaker directly — angle it away or keep it behind the speaker line
  • Reduce amplifier or speaker volume
  • Use EQ to cut feedback-prone frequencies — typically 2 kHz–6 kHz
  • Increase the distance between microphone and speakers
  • Consider a microphone with a cardioid polar pattern for better off-axis rejection