Significant floor noise (hiss / white-noise) issue with FX7.
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Alex
Participant# 1 month agoI recently upgraded from much cheaper X1 Pro intercoms to the FX7 specifically for the 10-rider mesh feature in group rides. Unfortunately, I am extremely disappointed with the audio quality — an area where I expected the FX7 to be clearly superior.
Background hiss / white-noise issue:
All the 5 sets of my FX7 exhibit a clearly audible electronic hiss or white noise as soon as any Bluetooth audio channel becomes active (music, intercom, GPS, or even when no sound is playing but the channel is open).
The hiss is particularly noticeable:
• at low to medium volumes
• in quiet environments
• when audio starts or stops (the hiss abruptly switches on/off with the stream)
By comparison, my X1 Pro units are completely silent in the same conditions — there is zero background noise when no audio is playing. The same persistent hiss is reported by many other FX7 owners on Reddit, Amazon reviews, and your own community forum, which strongly indicates this is a design or firmware limitation rather than defective units.
The marketed “Hi-Fi stereo sound” and “advanced CVC noise cancellation” should not come with an elevated noise floor that is actually worse than far cheaper competitors. During slow, quiet rides on my electric unicycle, this constant hiss is extremely distracting and ruins the overall experience from the intercom.
I would very much like to keep and enjoy the FX7 for its excellent mesh intercom features, but the current background noise simply drives me crazy.. 🙁For any manufacturer aspiring to produce truly high-quality motorcycle or vehicle intercom systems, pristine audio performance must be the absolute top priority. Every other feature – no matter how advanced (mesh networking, group size, music sharing, range, FM or app integration) – is secondary and only becomes relevant once the foundation of clean, fatigue-free sound has been achieved.
Clean sound first – everything else second!
Participant# 6 days, 14 hours agoHi John,
Yes, the easiest way to reduce the noise is to use a 30- or 75-ohm impedance adapter, in a 3.5 jack casing.
In general, a higher impedance value results in less noise. However, please note that higher values also lead to a greater reduction in maximum volume.
If you’re comfortable with soldering, an even better solution is to add 50-ohm resistors in series with the positive terminals of the speakers. This approach doesn’t require any extra space in the helmet, and the resulting volume drop is less.
Traditional impedance adapters (that you can buy in stores) typically use series resistors along with an additional 15-ohm shunt resistor to ground. In our case, that shunt resistor isn’t necessary and would only make the sound quieter. That’s why the DIY version even better.
Happy holidays!
Best Regards,
Alex
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