Project Scion FR-S: Amplifier and Subwoofer Install

Project Scion FR-S: Amplifier and Subwoofer Install 

Once again, we catch up with Future Shop ConnectPro head installer, Benson John and his team for part two of the audio install on the Scion FR-S project car. Previously, the team upgraded the head unit, component speakers and internal wiring, while JRP Inc. took care of the suspension, air intake and exhaust upgrades. For part two, the ConnectPro guys will install an Infinity Kappa Series 10-inch 100.9 watt subwoofer and Infinity Kappa FIVE Amplifier.

Infinity boasts innovative materials and breakthrough engineering, making it an easy decision for the FR-S upgrade. The 10-inch 100.9 watt subwoofer offers two and four ohms options for the two most popular subwoofer impedances, while the amp offers a 12 dB per octave electronic crossover, allowing you to optimize speaker performance based on type and placement.

Before we classify this install as officially complete, let’s take a look at the process. Thanks again to the ConnectPro crew and all the sponsors who have helped create one of the most impressive project cars of 2012.

Install

Subwoofer
Project Scion FR-S: Amplifier and Subwoofer Install

1.    The trunk is stripped of all necessary wiring for the sub and amplifier, before being reassembled.

Project Scion FR-S: Amplifier and Subwoofer Install
2.    A custom speaker box is built after measuring the right side of the trunk, where the sub will be placed.

Project Scion FR-S: Amplifier and Subwoofer Install
3.    Once the measurements are complete, the box is cut, glued together with industrial wood glue, screwed with wood screws for extra strength, then sealed using silicon. This will prevent air from escaping the box. The box is then covered in carpet to match the trunk interior. Once the box is finished, it is left to cure for two days.

*Quick Tip: When deciding on speaker box dimensions, it comes down to personal sound preference. For more bass, you may want a larger box. Before securing the box to the trunk, make sure it suits your preferred tastes.

Amplifier

Project Scion FR-S: Amplifier and Subwoofer Install
5.    Before attaching the wiring, the amp is fastened to a custom amp board. The board was also carpeted to blend with the trunk interior.

*Quick Tip: When deciding on amp placement, think about how you use your trunk. Would you like to utilize the space? Your best bet may be to fasten the amp to the back of the back seats. There is also a good chance the amp screw holes don’t match any factory ones in your trunk, so a custom board is a good option.

Project Scion FR-S: Amplifier and Subwoofer Install
6.    In this case, the owner did not want to drill into the frame of the vehicle, so the amp is screwed into the factory holes on the trunk ceiling between the two rear speakers.

Project Scion FR-S: Amplifier and Subwoofer Install
7.    Once the amp is fastened, it is connected to the wiring before the wiring is connected to the battery.

*Quick Tip: Your last step should always be attaching the wire to the battery. This will prevent damage to the battery or audio equipment.

Project Scion FR-S: Amplifier and Subwoofer Install
Sources

Johnston Research & Performance
Scion Canada
Future Shop
ConnectPro
Pioneer
Yokohama Tires
KW Suspensions
Cusco USA
Whiteline
Ingalls Engineering
Injen Technology
Magnaflow
NV Auto
Infinity by Harman

Related Articles

Chopping Block: Acura RDX Chopping Block: Acura RDX
Now that we’re well into the new year, it’s time to welcome the first discontinued model announcement of 2026. This one caught us a bit by surprise,...
First BMW M EV confirmed for 2027 First BMW M EV confirmed for 2027
You read that headline right – BMW M will begin its EV transition next year. The Munich-based carmaker will launch its first next gen or Neue Klasse...
TE37 30th Anniversary Release TE37 30th Anniversary Release
RAYS is celebrating a major milestone for one of the most iconic wheels in the performance world: the VOLK RACING TE37 is officially turning 30. Since...
Toyota unveils GR Yaris Morizo RR Special Edition at TAS Toyota unveils GR Yaris Morizo RR Special Edition at TAS
Okay, we’ll get right to it. Yes, the Toyota Yaris (including the GR Yaris) isn’t sold in North America and, as far as we know, there are no plans to...
Nissan reveals Aura Nismo Concept at TAS Nissan reveals Aura Nismo Concept at TAS
The Tokyo Auto Salon (TAS) is a vast collection of hot performance cars and concepts that rarely disappoints, year after year. Come January, it’s a...
KW Automotive Celebrates 30 Years of Coilover Innovation KW Automotive Celebrates 30 Years of Coilover Innovation
KW Automotive marked a huge milestone at the Essen Motor Show 2025, celebrating 30 years of KW coilover suspensions—a product that helped shape the...