[Fosi Co-Creation Challenge]DIY Modding Group | DIY, Your Way

[Fosi Audio Team]

Welcome to the Fosi Audio 8th Anniversary Co-Creation Challenge: DIY Modding Group!
This is your chance to show off your creativity, maker spirit, and love for HiFi. We’re calling on all users to share how you’ve customized your Fosi gear and inspire the next generation of innovation.

What’s the goal?
We want to make HiFi more personal and user-driven. Every mod, every tweak you make—helps shape the future of Fosi Audio products.

How to participate:
Reply to this post and include:
-Photos or videos of your modded Fosi gear
-A short description of your modifications (e.g. paint, shell customization, component swaps, circuit tweaks, lighting, control features)
-The inspiration behind your mod (optional)

Prizes:
Most Commercial Potential Award: $5,000 (1 winner)
Most Creative Award: $2,000 (1 winner)
Participation Prize: 20% OFF coupon

Timeline:
Submission Deadline: September 30, 2025
Winners Announced: October 30, 2025

How winners will be selected: Entries will be evaluated based on the following weighted criteria
Fosi Official Jury: 50%
Guest Judges (HiFi influencers): 30%
Community Likes & Comments: 20%

Let’s build the future of HiFi on your ways. Submit now!

 

[OliveAMMH]

Based on a rowing boat that was broken, I made a cabinet with a 8” sub + 2 focal speakers and a Fosi BT30D
Now this speaker is on my rowing club

 

[OliveAMMH]

Another one with another broken rowing boat. Same speakers but this time with a Fosi BT30 D pro

 

[OliveAMMH]

One more full wood cabinet with 10” sub focal speakers and still the Fosi BT 30D Pro

 

[JANGER]

My mods:
- added radiator on the top of V3 monoblock, mostly it is for visual because V3 is not becoming hot too much
- built audio spectrum analyzer in size compare to V3, it's simple well known Arduino with 1206 display in red version, the size of display limited the size of box, and I printed 3d both front and rear panel
- finally each V3 monoblock got powered from separated power supply by separated DC filter, and each got own mini table

 

[nickellback60]

- The SuperNova by LynnAudio - I have personally designed, hand-crafted & sold numerous SuperNovas to customers around the world! The SuperNova is a 50 watt ×2 (stereo) portable bluetooth speaker with a stereo-separated + dual passive radiator design.

This HiFi system runs off your guy's FosiAudio BT10A amplifier. With the FosiAudio amplifier & gold plated connections, the SuperNova delivers an immersive, efficient, & dynamic response despite its compact size. Perfect for all audiophiles alike - Providing audiophile-level tuning (adjustable bass, treble & master volume) & true stereo-separation, you can expect a real HiFi experience. The SuperNova isn't just loud - It's precise, delivering loud, studio-quality audio with undistorted deep bass that truly defies its size.

Construction & Tuning:
Constructed with 1/2" MDF & stereo separated (physical left/right enclosures). Sound treated internally with 1/8" closed cell foam & polyfill. Finished with speaker cabinet carpeting (doubles as exterior deadening). Each driver + passive has its own airspace of .04cbft - 7.3 grams of added weight to both passive radiators resulting in a tuning of 50hz.

Components:
●Fosiaudio BT10A Amplifier
●DaytonAudio 3.5" Full-Range drivers + passive radiators
● DaytonAudio 21v 10amp battery board + premium rechargeable 18650 lithium cells ×5
●Solderless 24k Gold plated Banana plugs ×4
●16AWG High-Strand copper wiring

Specs:
●Wide Frequency Range (50hz-18,000hz)
●Bluetooth 5.0 + 3.5mm Aux Input
●24+ hours of HiFi playback
●Universal 5v-24v charging input
●Adjustable Bass, Treble & Master volume

Dimensions:
13" Long × 6" Wide × 6.5" Tall

(I was inspired by other big name brands - I have purchased a few bluetooth speakers in my life & they never seem to fulfill my needs. In one way or another they always seem to fall short in some category, so I set out to design & craft my own bluetooth speaker to check all my "HiFi" boxes & I personally think I did a killer job!)

@Lynnaudio_ on TikTok for more!

 

[TrevorMcW]

Oh this is brilliant, I used to Row for Southsea Club (Portsmouth) back in the 1980's and then helped setup Milton Keynes in the late 1990's. When I retired from the club I was given one of the old clinker built coxed fours which stayed in my garage loft for years. I eventually renovated the stern in an obelisk form as a reminder of my rowing days, its complete with refurbished rudder gear, control lines (piano wire), and copper headed pins. Sadly the rest of the boat had to be disposed of due to space and time to create something else - your ideas here have made me long for my time with that old hull again. Well done.

Here is the stern of my boat, along side my main sound setup (the Fosi setup is in our new Kitchen diner) I'm gonna document what I have done there too, this is more of a technical upgrade than creative.

Coxed 4 Stern

 

[Martin Roscos]

Never have enough orange!
I particularly like the orange pattern glass board the system sits on!
Some orange rubber bands modify the feet and some orange caps cover the RCA terminals at the back.

 

[Audio Orbit]

Welcome to the Fosi Audio 8th Anniversary Co-Creation Challenge: DIY Modding Group!
This is your chance to show off your creativity, maker spirit, and love for HiFi. We’re calling on all users to share how you’ve customized your Fosi gear and inspire the next generation of innovation.

What’s the goal?
We want to make HiFi more personal and user-driven. Every mod, every tweak you make—helps shape the future of Fosi Audio products.

How to participate:
Reply to this post and include:
-Photos or videos of your modded Fosi gear
-A short description of your modifications (e.g. paint, shell customization, component swaps, circuit tweaks, lighting, control features)
-The inspiration behind your mod (optional)

Prizes:
Most Commercial Potential Award: $5,000 (1 winner)
Most Creative Award: $2,000 (1 winner)
Participation Prize: 20% OFF coupon

Timeline:
Submission Deadline: September 30, 2025
Winners Announced: October 30, 2025

How winners will be selected: Entries will be evaluated based on the following weighted criteria
Fosi Official Jury: 50%
Guest Judges (HiFi influencers): 30%
Community Likes & Comments: 20%

Let’s build the future of HiFi on your ways. Submit now!

Potfolia speaker + Herblissimo amp

The Potfolia is a DIY speaker featuring Chinese herbal medicine clay pot as enclosure, installed with Visaton B80 full range driver. The Herblissimo DIY Bluetooth amp is based on Fosi Audio ZK-1002 module, elegantly housed in an antique wooden box.

Note: The Potfolia ad shown below is just a prank. The speakers are not commercially available.

Demo videos
https://www.youtube.com/playlist?list=PL8G85l39cu5qBRhx8BG2LAhv63WOPQjId

 

[Audio Orbit]

“Colorama” audio system

The Fosi Audio ZK-1002T stereo (100W x 2) amplifier module based on TPA3116D2 chip and Bluetooth 5.0 receiver is a hidden gem! It’s perfect for my DIY amp and speaker system. The slim and compact Fosi module fits snugly into a transparent acrylic jewel box, which still has plenty of room for all the wiring and connectors. To pair with the transparent amp, I have a pair of cookie jars for the speakers. I could have stopped there. But then I thought I already created two pair of glass speakers, there’s no point in repeating myself a third time. What about adding some colours? How about Minions? Eventually I decided to ‘draw’ inspiration from my own painting. I duplicated a miniature for the acrylic box. Then I extracted two design patterns from the painting and hand painted the cookie jars. At last, a “Colorama” audio system that subtly, yet artistically, blends in with the décor.

Demo videos:
https://studio.youtube.com/playlist/PL8G85l39cu5qIuXErsY2tRiTOPp2QAGSN/videos