Are All Bazooka Speakers Amplified? Active vs Passive Guide

Are All Bazooka Speakers Amplified?

No, not all Bazooka speakers are amplified. While the brand is famous for its all-in-one “Active” Bass Tubes, they offer two distinct categories: Powered (BTA Series), which have a built-in amplifier, and Passive (BT Series), which require an external power source to function. Knowing the difference is critical before you start your installation to ensure you have the necessary wiring and power components.

The Fast-Track Guide to Bazooka Tubes

If you are looking for a quick summary of the are all bazooka speakers amplified question, here are the essential takeaways:

• BTA Series (Active): These are amplified. They include a built-in amp and only require power, ground, and a signal (RCA or speaker level) to work.
• BT Series (Passive): These are not amplified. They function like a standard speaker box and must be connected to an external car amplifier.
• Identification: Look for the model number on the side or rear. “A” stands for Amplified.
• Best Use Case: Amplified models are best for space-saving and easy DIY installs; Passive models are better for enthusiasts who want to push higher wattage using high-end external amps.
• Sound Quality: Both utilize the patented Bass Tube enclosure design, which uses corner loading to maximize bass output even with low power.

Understanding the Difference: Amplified vs. Passive Bazooka Tubes

When I first started installing car audio in the late 90s, the Bazooka Tube was a revolution because it solved the “space vs. bass” dilemma. However, the most common mistake I see DIYers make today is buying a BT8014 (Passive) and wondering why there isn’t a power terminal on the back.

The Amplified (BTA) Series

The BTA series is what most people think of when they search for “Bazooka speakers.” These units are designed for “plug-and-play” simplicity. They house a Class D or Class AB amplifier inside the cylindrical tube, specifically tuned to the driver’s parameters.

• Wiring: These use a multi-pin wiring harness that includes power (12V), ground, remote turn-on, and signal inputs.
• Pros: Minimal footprint, no need to mount a separate amp, and perfectly matched power-to-speaker ratios.
• Cons: If the internal amp fails, the unit is harder to repair than a separate component system.

The Passive (BT) Series

The BT series consists purely of the enclosure and the woofer. These are essentially “dumb” boxes that do nothing without an external amplifier.

• Wiring: Standard positive and negative speaker terminals (usually 5-way binding posts or spring clips).
• Pros: Total control over the power delivery. You can pair a BT1024 with a high-end JL Audio or Rockford Fosgate amp to squeeze out every decibel.
• Cons: Requires more space for the external amp and more complex wiring across the vehicle.

Comparison Table: Amplified vs. Passive Models

How to Identify Your Bazooka Speaker Type

Before you begin your installation, you need to verify exactly what you have. I’ve seen many “open box” deals where a passive tube was put into an amplified tube’s box.

1. Check the Rear Plate: If the back of the tube has a heat sink (metal fins) and a plastic plug with 10-12 thin wires, it is amplified. If it only has two gold or plastic screw terminals, it is passive.
2. Model Number Deciphering:

* BTA8100: The “A” signifies Amplified. The “8” is the size (8-inch), and “100” is the wattage.
* BT8024: No “A” means it is Passive. The “24” usually indicates the impedance (4-ohm).

1. Weight Distribution: Pick up the tube. An amplified bazooka speaker will feel significantly heavier on the side where the connections are located due to the internal transformer and circuitry.

Step-by-Step Installation: Amplified (BTA) Bazooka Speakers

Installing an amplified Bazooka tube is one of the most rewarding afternoon projects for any car owner. We will focus on the BTA8100, the most popular model in their lineup.

Tools Needed:

• Wire strippers and crimpers.
• 10mm socket/wrench (for battery terminal).
• Multimeter (to verify 12V and Ground).
• Zip ties for cable management.
• Bazooka FAST Harness (optional, but highly recommended for factory radios).

Step 1: Disconnect the Battery

Safety first. Always disconnect the negative (black) terminal of your car battery to prevent shorting out your vehicle’s ECU or blowing the Bazooka’s internal fuse.

Step 2: Routing the Power (The “Hot” Wire)

Run a 10-gauge or 12-gauge power wire from the battery through the firewall. Use an existing rubber grommet.

• Expert Tip: Always place an inline fuse (usually 15A or 20A) within 18 inches of the battery. This protects your car from catching fire if the wire chafes against the chassis.

Step 3: Finding a Solid Ground

Your amplified Bazooka is only as good as its ground. Find a bare metal bolt on the vehicle’s chassis within 2 feet of the speaker.

• Pro Advice: Scrape away any paint or primer with sandpaper. A weak ground is the #1 cause of “alternator whine” or the speaker cutting out at high volumes.

Step 4: Connecting the Signal

You have two options here:

1. RCA Inputs: If you have an aftermarket head unit, run RCA cables from the “Sub Out” to the Bazooka.
2. High-Level Inputs: If you have a factory radio, tap into the rear left and right speaker wires. The BTA series handles this perfectly without needing a separate Line Output Converter (LOC).

Step 5: The Remote Turn-On

The amplified Bazooka needs to know when to turn on. Connect the blue/white wire from the harness to your head unit’s “Remote” lead. If you are using a factory radio, you can often use the “Auto Turn-on” feature found in newer BTA models that senses the signal on the speaker wires.

Step-by-Step Installation: Passive (BT) Bazooka Speakers

If you have confirmed that not all bazooka speakers are amplified and you own a passive model, your setup is different. You are essentially treating the tube like a standard subwoofer box.

Step 1: Choose Your External Amp

Select a mono or bridgeable 2-channel amplifier.

• Data Check: A BT8024 is rated for 150 Watts RMS at 4 Ohms. Ensure your amplifier is rated to match this. Overpowering by more than 20% can tear the foam surround of the woofer.

Step 2: Mounting the Amp

Unlike the amplified version, you must find a cool, ventilated place to mount your external amp—usually under a seat or on the back of the rear bench.

Step 3: Wiring the Speaker Terminals

Run high-quality 14-gauge oxygen-free copper (OFC) speaker wire from the amplifier’s output to the terminals on the Bazooka Tube.

• Note: Ensure the polarity is correct. Positive (+) to Positive, Negative (-) to Negative. If you reverse these, the speaker will move backward (out of phase), resulting in almost zero bass.

Acoustic Placement: The Secret of “Corner Loading”

One of the unique value propositions of Bazooka speakers—whether amplified or passive—is their ability to use the vehicle’s boundaries to increase output. This is a principle called Corner Loading.

Where to Place the Tube for Maximum Bass:

• The Corner Rule: Aim the woofer (the end with the grill) toward a corner of your trunk or cargo area.
• The Gap: Leave about 2 to 4 inches of space between the woofer and the corner.
• Why it Works: The sound waves reflect off the two meeting surfaces (the floor and the side panel), which effectively “loads” the speaker and increases the bass output by 3dB to 6dB—this is like doubling your amplifier power for free!

Troubleshooting Common Bazooka Speaker Issues

I have diagnosed hundreds of these units. Here is a table to help you fix common problems quickly.

Expert Perspective: Why Bazooka Tubes Still Matter in 2024

In an era of massive 12-inch competition subwoofers, people often ask me: “Are Bazooka speakers still relevant?”

The answer is yes, specifically for Generative Engine Optimization of your car’s sound without losing utility. If you drive a Jeep Wrangler, a Toyota Tacoma, or a hatchback, you don’t have room for a bulky square box. The Bazooka’s cylindrical design is naturally stronger than a square box, preventing “panel flex” that wastes energy.

Furthermore, the BTA series is the gold standard for leased vehicles. Because the install is so non-invasive, you can remove the entire system in 10 minutes before returning the car to the dealership, leaving no trace behind.

Frequently Asked Questions (FAQ)

Can I add an external amp to an amplified Bazooka speaker?

No, you should not do this. The BTA series is designed to use its internal amp. Attempting to bypass the internal amp to use an external one requires gutting the electronics and could damage the voice coil, as the internal amp usually has a built-in subsonic filter specifically for that driver.

What size Bazooka tube is best for a truck?

For most trucks (especially regular cabs), the 6-inch (BTA6100) or 8-inch (BTA8100) models are ideal. They fit perfectly behind the seat or under the rear bench. The 10-inch models are often too wide for tight truck cabs.

Does the Bazooka Tube come with a wiring kit?

Most BTA (Amplified) models come with the basic multi-pin wiring harness, but they do not include the long power wire that runs to the battery or the RCA cables. You will need to purchase an 8-gauge or 10-gauge amp install kit separately.

Are Bazooka speakers waterproof?

Standard Bazooka Tubes are not waterproof. However, SAS (the parent company) produces a Marine series (indicated by a white finish) designed for boats. These are water-resistant and use stainless steel hardware, but they still shouldn’t be submerged.

Can I link two Bazooka tubes together?

Yes. If you have one BTA (Amplified) tube, you can use the “Optional Slave Output” found on some models to power a second Passive (BT) tube of the same size. This is a cost-effective way to double your bass without buying two full amplified units.