Next-Level Speaker Systems 

Custom Car Audio Upgrades in Schererville, Indiana

Upgrade your driving experience with custom-tuned audio that delivers cleaner sound, tighter bass, and better clarity on every mile.

Immersive Audio

We’ll Make Your Sound System an Experience

Car audio upgrades are the difference between just hearing your music and actually feeling it. When you replace factory speakers with real quality components, you get cleaner highs, tighter bass, and clarity that makes every song hit harder. We dial in each system so it sounds balanced and full, not boomy or distorted. 


Whether you want subtle improvement or a full system that turns your car into a rolling concert, we build it to match your style and your ear. If you want music that actually sounds like music, this is where you get it done right. 

Car Teks

Why Invest in PPF?

4 Reasons to Choose Car Teks for Audio Upgrades

Three stars above tiered steps.

The Best Brands

We hand pick audio brands that actually perform, not just look good on a box. Every product we carry is chosen for value, reliability, and sound quality at each price point. Whether you want a simple $100 radio or a $2000 amplifier for a full blown system, we match you with the best gear for your goals. They deliver serious results. 

Two speakers emitting sound waves.

The Best Installs

We never settle for just getting it working. Our team was trained directly by ownership and industry leaders, so every install is clean, secure, and dialed in correctly. Wiring is hidden. Panels are reassembled the right way. Everything is done with purpose and care. When the job is finished, it looks like it belongs there. 

Speaker, outlined in black on a white background.

Custom Work When You Want More

We have years of hands-on experience building the stuff most shops won’t even attempt. Subwoofer enclosures, fiberglass dash pieces, custom speaker pods, you name it. Custom fabrication is not a side service here. It’s something we excel at and truly enjoy. If you want 1-of-a-kind work that sounds incredible, this is the shop you can trust. 

Two people with neckties.

A Staff That Actually Knows Their Stuff

We are not here to rush you in and out. We take the time to explain what you are buying, why it matters, and how it will sound when it is installed. Our team loves audio, and it shows in how we treat customers and how we approach every build. When you choose us, you get passion, real knowledge, and people who genuinely want to help you get the sound you’re after. 

Customer FAQs 

Have Custom Audio Upgrade Questions?

  • Do I need to replace all my speakers to hear a difference?

    Not always. Even replacing just the front speakers or adding a quality amplifier can make a huge improvement in clarity and volume. Most factory systems are underpowered and tuned very safe, so even a small upgrade can change the entire feel of your music. We’ll help you choose the pieces that make the biggest difference for your budget. 

  • Will a subwoofer make my system sound “too bass heavy”?

    A properly tuned subwoofer doesn’t just add bass, it rounds out your entire frequency range. It takes the heavy lifting away from your door speakers so they can play cleaner and clearer. The bass doesn’t have to be loud or boomy unless you want it to be. A sub can actually make the system sound more balanced and way more enjoyable even at low volume. 

  • Can I keep my factory radio and still upgrade the system?

    Absolutely. We work with factory head units all the time and can feed a clean signal into amps and speakers behind the scenes. You don’t have to replace your touchscreen or lose any vehicle features to get better sound. We can build around what you already have and still deliver a real upgrade. 

  • How long does an audio upgrade take?

    Time depends on what we’re installing. A speaker replacement might be done in a few hours, while a full system with amps, wiring, and a custom enclosure can take a full day or 2. We always give a realistic timeline upfront so you’re not guessing. We’d rather do it right than do it fast. 

  • Is Car Teks really that different from other shops?

    Yes. We don’t just slap parts in and send you out the door. We tune the system, hide the wiring, secure every connection, and build the package to sound the way you want it to sound. You’re not buying parts, you’re buying the experience and craftsmanship that makes those parts actually perform. 

Car Teks

Ready to Upgrade Your Sound?

Don’t settle for factory audio that’s just okay. If you’re serious about music, this is where your system finally gets built the right way—tuned, balanced, and dialed to your ear. From simple speaker upgrades to full, custom-built systems, we’ll help you get the exact sound you’re after. All you need to do is take the first step. 

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