Pierce Gates Bronco #BuildBlog Week One

Pierce Gates Bronco Beast Lair


Pierce Gates Bronco #BuildBlog Week One

Cotter Pins in Alternator Chain

Pierce Gates Bronco #BuildBlog Week One: Our first task this week was to pull the front clip and alternators from the Bronco. We expected this to go well and it did. There were only a few items that caught our attention.

When we pulled the clip we found the alternator chain was held together with cotter pins. Due to safety concerns this must go. We will re-engineer the plate to allow enough belt-wrap for a tooth-belt design. We’re considering a hydraulic drive for the alternator belt. It was nice when the chain came right off after pulling the first alternator.

Pierce Gates Bronco Alternator Removal

When we pulled the clip we found the alternator chain was held together with cotter pins. Due to safety concerns this must go. We will re-engineer the plate to allow enough belt-wrap for a tooth-belt design. We’re considering a hydraulic drive for the alternator belt. It was nice when the chain came right off after pulling the first alternator.

Once the chain was off we started removing the rest of the alternators working from the outside-in. It didn’t take long. Thinking of new ones we have lined up from Excessive Amperage made it go even faster. It was getting hot in the lair, so we took a cold-beverage break, then finished up in good time.

Seeing the front-end and plate with the alternators fully removed was nice. We’ll be sending the plate itself and all associated brackets to Dog House Powder Coating for a fresh coat. We’re undecided on what colors we’ll be doing yet but we have some ideas.

Pierce Gates Alternator Plate


Pierce Gates Bronco Plate Removed

Next we had wiring to sort and measure for replacement. The battery rack on the Pierce Gates Bronco is located under the rear of the vehicle. This is where we’ll add eight NorthStar Group 31 AGM batteries. The defunct XS batteries were previously removed but the wiring and bars were still installed. Removing the wire and bars went quick. We took the measurements and put in our order what we needed. All the old 1/0 Tsunami and XS power wire is being replaced with new 2/0 GP Wire.

Pierce Gates Bronco Battery Rack


Pierce Gates Bronco Battery Rack Side View


Back to the Lair…

Pierce Audio Inc. is super-excited for our next adventure up the mountain after Thanksgiving. Stay tuned. It’s going to be a busy Winter as we prepare to release this beast by Spring 2018. Look out for the next #BuildBlog update soon. Also keep an eye on Facebook, Instagram, YouTube and other social media channels for more.

Team Gates Bronco: The Legacy Continues

Before we kick off the Team Gates Bronco rebuild, it’s important to remremember who started it all:

Alma Gates: 1935-2013

Alma Gates

Via Slamology:

“Alma Gates and Team Vision SPL burst onto the car audio scene in 1995 at the IASCA/db drag world finals. The team changed their name to Team Gates in 1997. Her bronco(s) dominated the competition crushing all previous world records, forever changing the way competitors think about creating high end pressure levels and rewriting how sanctioning bodies would measure it.

Alma was an ambassador to the car audio industry like none before her, and the example she has set would be hard to follow. After 11 years of building vehicles.., traveling the world and competing, she announced in 2006 she was going to retire after running her latest creation.”

Read the full tribute to Alma Gates here.

The Team Gates Bronco

After 2006 the Bronco changed hands a couple times and managed to hit a few shows before going into storage. Despite it’s hiatus from the competition circuit the hype for this vehicle never faded. It was frequenly featured in magazines, TV and online. In 2014 the Bronco made it’s last public appearance at Slamology:

Rebuilding the Beast…

Earlier this year Pierce Audio acquired the Team Gates Bronco and we have some big plans for this legendary vehicle! In fact, things are really ramping up. We’ve started building new custom subwoofers and speakers already. Next week look for our first “Build Blog”. This will include images, videos and more from the beast’s lair deep within the Olympic Mountains.

The ultimate goal of this project is to do everything we can to ensure Alma Gates legacy continues. She wouldn’t settle for anything but the best and we see it as our duty to the same. Fortunately we are not alone in this mission and are honored to have some great partners who share this vision:

Partners / Sponsors

Excessive Amperage
Excessive Amperage are building 15 custom 300 AMP Hairpin alternators. These things are bad ass! If you haven’t seen their alternators, do yourself a favor and check out there official site and Instagram. We put in a lot of time researching exactly what we wanted and feel they are perfect for this build.


NorthStar Battery
NorthStar Battery is adding 8 Group 31 AGM batteries. This build needs an extensive amount of power and after crunching the numbers, we confirmed NorthStar can absolutely deliver. The batteries are made in the USA and we are stoked to have them on board! Checkout NorthStar Battery on Facebook.

We are in talks with several other partners and sponsors and will announce them once confirmed. This is an exciting project and the momentum is building. Things will start getting a whole lot louder around here soon. Literally.

If you are interested in collaborating on this project in any way be sure to let us know. We see this endeavor as not only a legacy to Alma, but also as an investment in promoting the sport she loved so much. We welcome your constructive input, comments and suggestions along the way.

As we move forward we’ll be documenting everything and post images and details on the blog and social media each week. There may be a few surprises to announce too, so definitely stay tuned. In the meantime here are a few new images from last week as we prepare to Rebuild the Beast!

Team Gates Bronco Passenger Interior

Team Gates Bronco MSD Ignition

Team Gates Bronco Alternators

Team Gates Bronco Demo Deck

Team Gates Bronco Passenger Door

Series 12k 33″ Pre-Test

Series 12k 33″ Pre-Test:

In just a few hours from right now the Pierce Audio Inc. team will test a 33″ Series 12k subwoofer. Over the next week we’ll add some videos, images and data for you to see how it went. We like to push the limits and today is no different. If you are familiar with us you already know:

We Let our Subwoofers Speak for Themselves

Series 12k 33"

Today we’ll hear what the Series 12k 33″ has to say…

In the meantime we’ve put together some related information and links about testing:

Understanding Loudspeaker Data

“The ability to choose the most appropriate loudspeaker for a particular enclosure is directly related to your understanding of the performance data that manufacturers provide with their products. Prior to 1970, there were no easy or affordable methods accepted as standard in the industry for obtaining this data. The recognized methods were expensive and often unrealistic for the thousands of individuals needing loudspeaker performance information.”

Learn More: Eminence: The Art and Science of Sound

Testing a Subwoofer without a Box?

“Is it ok to test a subwoofer when it is not in a box/enclosure? I’m making a custom fiberglass box for it and I want to make sure the sub is working properly before I screw it in there (plus, I’m dying to hear this thing). Thanks.”

See The Answers at Yahoo Answers


If you have any input, questions or requests, let us know. We’re usually on Facebook during business and also you can join our Slack team to chat anytime.

Bassheads Unite! Surf City Shout Out

Bassheads Unite!  Pierce Audio Inc. was stoked to be at Surf City Soundoff 2017! We were even more stoked to see all the Bassheads out to represent the sport! The event included many vendors, manufacturers and reps including Pierce Audio Inc. would like to take a moment to personally thank you all. Fantastic demos and the builds and all around. We were fully impressed!

We appreciate all the Bassheads including:

John Nolte, Sound Digital and Full Throttle Battery

Justin Henke and DC Audio

Sundown Audio

Anyone else we may have missed in this post: Thank you all! Please let us know if you have any pictures, videos or links and we’ll post those too.

We’d also like to thank Chinook Winds Casino Resort. Last but not least: A special thanks goes out to Travis Chin and Scott Macrae for hosting the event.

Here’s to 2018 !!!

Pierce Audio at Surf City Soundoff 2017

Series 12k 33" with JBL Crown
Pierce Audio Inc. was stoked to see everyone out at Surf City Soundoff on the first day of the event.

A few pictures from the Pierce Audio booth from yesterday and today. We’re justJBL Crown and Pierce Audio Tshirt getting setup again now for day 2 and have a ton of our products on display. The PAP team is here to answer your questions and provide any information all day today.

Come check out the booth today and our Series 12k 33″ Series 12k on display with a JBL A6000 GTI amp

Speaker Box Light: Thiele-Small Calculator

Speaker Box LightWe came across a Thiele-Small app the other night called Speaker Box Light and we were fairly pleased with the results.

From the description:

This service is designed for beginners and advanced fans of acoustic system building. The main feature is a calculation of the volume of the subwoofer box, according to his parameters Thiele-Small(FS, VAS, QTS). Calculation available vented and closed enclosures for each of them you can draw graphs of frequency response, phase response and time delays.

Also, the program provides recommendations for choosing of box type, an optimum volume of the box and the tuning frequency of vented box for your speaker. For vented case it is possible to calculate the parameters of the port: radius(if the cross section of the port circumference), width and height(if the cross-section rectangle) and its length.

We didn’t find any Pierce Audio Inc. speakers in the database yet but we may add some soon. Let us know if you are interested or want to collaborate on it. Contact Us here or Facebook to discuss more.

FYI: We tested the Android version. Here is the link to the Iphone version.

WMD Subwoofer Circa 2003

WMD Subwoofer 2003

Pierce Audio Products has an extensive history of engineering and innovating speakers.

Our Woofer of Mass Destruction (WMD) is nearly 15 years old! Back then, we were relatively new to the industry but the quality and performance of our subwoofers were already exceeding expectations.

Our mission: Build the Best Speakers

Our technology has evolved exponentially since then and has been used by many others along the way. Including through white-label, OEM and “other” channels. All of our current subwoofers are hand-built in the USA on top of this experience.

WMD (2003) Excursion

Thank you for your support over the years we appreciate it!

PS: If you are interested, some of our history is documented through forums like Realm of Excursion.

Event: Surf City Soundoff 2017

Pierce Audio Products Surf City Soundoff

This weekend!!! Pierce Audio Products will be in Lincoln City, OR. for Surf City Soundoff 2017!

This year’s event takes place at Chinook Winds Casino Resort.

Surf City Soundoff 2017 Schedule:

Saturday, August 26, 2017 – Sound Quality only 11am

Sunday, August 27, 2017 – All SPL formats

Registration 8am – Judging at 9am

Join the Pierce Audio Slack Team anytime to chat with us before, during and after the event. If you have any comments or questions, our Slack team is great way to keep in touch. See you at the show!