Waveform Unhinged: Episode 2, Pt. 1
feat. Nick Apicella of ResoNix
Nick sites down with host Miguel Rios to talk about sound deadening and its undersold importance in high performing car audio systems.
Listen on Youtube
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Member Installation Spotlight
A finished project from the community, picked each month.
SEPTEMBER 2026 · PETROS FLOROS
2021 Tesla Model S Plaid
- Deadening
- Mega CLD, Fiber Mat, Guardian, CCF, Butyl Rope
- Front Speaker
- Accuton C30AM / C100AM, Helix Ci5-200
- Processing
- Helix V8 Ultimate
- Amplification
- Helix V8 Ultimate + Helix V Two
- Subwoofers
- ResoNix GUS-12 (GUS-10 in progress)
- Installed By
- JK Automotive Designs, Stoneham, MA
- Tuned By
- Brayden Cooper and Nick Apicella
“We fit a GUS-12 entirely hidden in the side panel, in a 0.45 cubic foot enclosure that plays flat to 10 Hz.”
Our customer Petros Floros wanted to have the best sound possible, but not be able to see anything. we started off by 3D scanning the entire rear of the car, as well as the dash and pillars. from there, we designed a custom enclosure, amp rack, midrange mounts, tweeter waveguide, and fuse solutions for the vehicle. using in house laser cutters, 3d printers, and cnc machines, we manufactured all components for the installation.
We wanted the best possible environment for our speakers so we used the ResoNix suite of products. i am a big believer in spending dollars on treatment before spending pennie’s on equipment in most cars. this became especially true in this system, because our friend petros started off with a more modest system, suing Helix Ci7 midranges the tweeters. he later upgraded to the Accuton midranges and tweeters. then, in another large jump, we are now replacing his helix ci5 midbasses with Accuton’s, and adding a new ResoNix GUS 10 front subwoofer. throughout these upgrades, one thing didn’t change, the treatment. we did it right the first time, so even the most detailed and lowest distortion speakers in the world are very happy in this environment.
One large priority of ours is serviceability. every component in this vehicle uses quality connectors, and is designed to be easily returned to stock, even without our help. the amplifier rack and be unplugged and removed from the vehicle in 15 minutes. even less with the subwoofer enclosure on the other side of the trunk.
One massive challenge on this install was the rear subwoofer installation. Petros did not want anything intruding into his truck space, but also did not want anything going under the floor. our only option was to cram a subwoofer in the side panel in a small box. in the past, we would be limited to a slim low power 10 inch subwoofer with mediocre performance. this is where the ResoNix GUS subwoofers change everything. we fit a GUS-12 entirely hidden in the side panel, in a previously unheard of small 0.45 cubic foot enclosure. this enclosure was cnc cut to fit around the large crash structure that seppartes the under floor areas and the side cubby. this enclosure is just barely larger than the basket of the subwoofer. the result? a subwoofer that plate FLAT TO 10HZ, with authority throughout the entire passband, with incredibly low distortion, great linearity, and zero motor noise!!!
We designed a 3d printed hideaway Helix Conductor Pro mount in the center console, as well as easily removable panels in the rear to see both the amplifiers and the subwoofer without restriction. The system is completely oem integrated using high level inputs, and runs via usb perfect stream to a phone.
We are very excited to see what the new GUS-10 front subwoofer and Accuton midbass drivers will do to the system. a quick preliminary listen to the Accuton midbass drivers shows immediate improvements to transient response and upper lower midrange frequencies..
Member Installation Submissions
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Watch & learn
From YouTube
Install walkthroughs, tuning breakdowns, and product testing from the ResoNix channel.
ResoNix Sound Solutions
8.81k Subscribers · 146 Videos
Competitor Spotlight Series
On-site interviews with competitors at finals and regionals around the country.
ResoNix Competitor Spotlight - 2026 Steel Valley Regionals: Mike Buononato
ResoNix Sound Solutions
ResoNix Competitor Spotlight - 2026 Hudson Valley Regionals, NY: Carson Steigerwalt
ResoNix Sound Solutions
ResoNix Competitor Spotlight - 2026 Hudson Valley Regionals, NY: Luke Ouellet
ResoNix Sound Solutions
Tune in
Featured Podcasts
ResoNix is the proud sponsor of the SQOLOGY Car Audio Podcast - here are a few episodes worth a listen.
Sqology Podcast: Episode 54
feat. Nick Apicella of ResoNix
Nick sits down with hosts Michael Myers and Kiffon Keplinger to discuss his start in car audio, forming Apicella Auto Sound, and eventually the formation of ResoNix Sound Solutions.
Listen on Spotify
Waveform Unhinged: Episode 2, Pt. 2
feat. Nick Apicella of ResoNix
Nick sits down with host Miguel Rios to discuss ResoNix’s upcoming subwoofers, the engineering behind them, and his approach to performance and product design.
Listen on Youtube
SQology Podcast: Episode 81
feat. Nick Apicella of ResoNix
Nick sits down with hosts Michael Myers and Kiffon Keplinger to talk this year's Car Audio Championship and the state of the competition scene.
Listen on Spotify
Waveform Unhinged: Episode 2, Pt. 3
feat. Nick Apicella of ResoNix
Nick sits down with host Miguel Rios to discuss car audio tuning, measurement methods, system optimization, equipment choices, and the realities of sound quality competition.
Listen on Youtube
SoundQ Garage Podcast
feat. Nick Apicella of ResoNix
Nick explains why Xmax claims often fail, how BL, suspension, and inductance symmetry create audible clarity, and why linearity is the single most important metric for deep extension that still feels present.
Listen on SpotifyIn the community
Events
From regional competitions to local get-togethers, ResoNix is proud to show up, participate, and support the car audio community in person.
Events We Recommend
June
12
2027
We're excited to be back for the 2027 event. Stop by, check out some incredible builds, and say hello!
Event detailsEvents We've Been Part Of
Regionals and meetups ResoNix has sponsored, attended, or both.
Sponsor
Attendee
Hudson Valley Regionals
2024 · 2025 · 2026
Sponsored and attended all three years, alongside Carson Steigerwalt.
Sponsor
Attendee
Steel Valley Regionals
Attending ~7 years · Sponsored 2023–2025
A long-running one for us — attending for about seven years, with Carson joining for the past few, and sponsoring 2023 through 2025.
Attendee
NESQ - Midcoast SQ Rally - IASCA 3X + MASQ
2025
Luke's informal New England meetup — we've been out to these as well to enjoy SQ cars and a bit of competition fun.
Giving Back
Community Support
ResoNix looks out for its own. A few of the fundraisers our community has rallied behind.
Help Matt Recover After House Fire
When our friend and incoming ResoNix warehouse manager, Matt, lost his home, belongings, and beloved cat Odin in a devastating house fire, the ResoNix community came together to help. A fundraiser was organized to support Matt and his family with immediate expenses, veterinary care, temporary housing, and the difficult process of rebuilding after the loss.
Fundraiser note: The GoFundMe was temporarily paused after the page mentioned an offer to provide ResoNix customers with 2x store credit for their donations, which was not permitted under GoFundMe’s rules. The offer was removed from the GoFundMe page so the fundraiser could be reactivated, but it remained actively shared and promoted through ResoNix Facebook groups and community forums.
Raised
$26,716 of $30,000
Help Ian Brandon Battle Advanced Liver Disease
When Ian Brandon was diagnosed with advanced liver damage caused by a rare and aggressive form of Hepatitis C, he faced an urgent treatment plan with significant medication costs, medical expenses, and unpaid time away from work.
ResoNix rallied behind Ian by running a fundraiser sale, donating 7% of purchases when customers used a 7% discount code or 15% when customers chose to waive their discount, with proceeds going toward Ian’s treatment and GoFundMe campaign.
Raised
$42,597 of $45,000
Jon Koch Giveaway
When longtime friend and elementary-school teacher Jon Koch competed in the 2025 America’s Favorite Teacher competition, the ResoNix community rallied behind him in a big way. Customers donated roughly $50,000, with ResoNix offering $2 in store credit for every $1 donated and matching those donations with another roughly $50,000, bringing the community’s total contribution to around $100,000 and helping Jon ultimately win the national competition.
Jon himself is an elementary-school teacher in Newark, NJ. Winning got him $25,000, a trip to Hawaii, a Reader’s Digest feature, and a school assembly for the teachers and students with Bill Nye. The campaign also supported The Planetary Society’s work in science and space education while bringing additional attention to Hoods to Woods, which helps underserved youth experience snowboarding and the outdoors.
Raised
$100,000 of $100,000
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