GUNMANSA

JBL Stadium 122SSI 12-Inch High Performance Switchable Subwoofer - 500W RMS

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R 3,959
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R 5,080
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Description

The JBL Stadium 122SSI puts you in control of your bass. With 500W RMS (1,500W peak) power handling, this 12-inch subwoofer delivers deep, clean, and powerful bass for any car audio system. In addition, its Selectable Smart Impedance (SSI™) lets you choose either 2 or 4 ohms, allowing for multiple system configurations. This flexibility ensures you can easily integrate it into both single and multi-subwoofer setups.


Innovative Design for Reliability


Aero-Cooled Voice Coil: The subwoofer features a unique aero-cooling system that channels air past the voice coil. This keeps the coil cool, even at high output levels, improving reliability and long-term performance.


Oversized 2-Inch Voice Coil: Despite its compact size, the 2-inch (50mm) voice coil handles more power than conventional coils while remaining lighter than larger 4-inch coils. This ensures a perfect balance between thermal power handling and low mass, delivering responsive, distortion-free bass.


Premium Push Terminals: The integrated terminals accommodate 8 AWG wire for low-resistance, low-loss power transfer, even over long wire runs. This ensures your subwoofer receives consistent power for optimum performance.


 


Technical Specifications













































Specification Detail
Type 12″ (300mm) High-Performance Car Audio Subwoofer
Power Handling 500W RMS / 1,500W Peak
Sensitivity (@2.83V) 92dB
Frequency Response 25Hz – 175Hz
Voice Coil Diameter 2 in. (50mm)
Impedance 2 or 4 ohms
Cutout Diameter 11-1/5″ (285mm)
Mounting Depth 7″ (180mm)







*This Product is a Parallel Import
Warranty

Warranty

Our products are covered by a manufacturer’s warranty ranging from 6 months up to a lifetime, subject to the specific item. For detailed warranty information, kindly enquire with our support team.


Reviews

Reviews

Shipping

South Africa: 1-3 Days

Free Shipping Over R2000

Shipping From R60

International: 2-5 Days

Let customers speak for us

from 982 reviews
SUPER!!! SUPER!!! SUPER!!!

This product smells absolutely divine! My son is going to love it!

The service from Gunmansa is fabulous! From the day of purchase, there was very clear communication regarding the shipping dates. Gunmansa is both professional and friendly.
HIGHLY HIGHLY RECOMMEND

Natalie Dumas
One of the greatest on the market

One of the greatest on the market

Beacannon Topandas
Awesome!

Awesome! Was belaglik vinnig. Thanks julle.

Derek Cilliers
Good product

Good product fits well

Anonymous
That's is a very nice

That's is a very nice product

Anonymous
Good

Good

Anonymous
Good quality suitcase

Good quality suitcase. Great service. What a pleasure dealing with a company like this.

Danielle Espag
I thought all is inclusive as per the picture but now I need the gun at what price?

I thought all is inclusive as per the picture but now I need the gun, what price?

Anonymous
Nice compact and sturdy chassis

Nice compact and sturdy chassis. Build quality is good and cable management room is good as well. Actually already bought a few more from the same place because the price here is good and i havent had any issues with them.

Tabrez Moorad
The correct item I needed to sport my bakkie

The correct item I needed to sport my bakkie. Quality stuff. Thanks

Samuel Kaputa
Excellent service

Thank you for an excellent service and being very accommodating. I appreciate your professionalism and getting a precious gift to my dad earlier than expected. Appreciate it so much.

Anina Loots

I am happy with my order ☺️

Nondwe Hem

The hairdryer we ordered arrived very fast and works like a charm! Happy wife, happy life, as they say. Thank you very much Gun Man SA!

Pieter Sadie
Great Service

Great service and even better products!

Rudi

Great product and excellent customer service and delivery was quick.

Shawn Zenda
ENGINE PARTS

ENGINE PARTS

TURBO, INTAKE & PERFORMANCE

TURBO, INTAKE & PERFORMANCE

FUEL SYSTEM

FUEL SYSTEM

COOLING & HEATING

COOLING & HEATING

EXHAUST SYSTEM

EXHAUST SYSTEM

TRANSMISSION, CLUTCH & DRIVELINE

TRANSMISSION, CLUTCH & DRIVELINE

SUSPENSION

SUSPENSION

STEERING

STEERING

BRAKES

BRAKES

WHEELS, TYRES & HUBS

WHEELS, TYRES & HUBS

ELECTRICAL, IGNITION & CHARGING

ELECTRICAL, IGNITION & CHARGING

LIGHTING & SIGNALLING

LIGHTING & SIGNALLING

AUDIO, ELECTRONICS & COMMUNICATIONS

AUDIO, ELECTRONICS & COMMUNICATIONS

INTERIOR & COCKPIT

INTERIOR & COCKPIT

EXTERIOR, BODY & STYLING

EXTERIOR, BODY & STYLING

SAFETY & SECURITY

SAFETY & SECURITY

4X4, OFF-ROAD & TOWING

4X4, OFF-ROAD & TOWING

FILTERS, BELTS, HOSES & SERVICE PARTS

FILTERS, BELTS, HOSES & SERVICE PARTS

WORKSHOP TOOLS & EQUIPMENT

WORKSHOP TOOLS & EQUIPMENT

OTHER AUTOMOTIVE PARTS & ACCESSORIES

OTHER AUTOMOTIVE PARTS & ACCESSORIES

OILS, FLUIDS & CHEMICALS

OILS, FLUIDS & CHEMICALS

CAR CARE & ACCESSORIES

CAR CARE & ACCESSORIES

FORMULA RACING COLLECTION

Engineered for speed, designed for champions

Performance

Precision-engineered components built for maximum performance on and off the track.

Technology

Advanced materials and cutting-edge design inspired by Formula One innovation.

Excellence

Championship-level quality that delivers results when it matters most.

SOUTH AFRICA'S MODERN TACTICAL & TECH STORE

Welcome to GUNMANSA — where tactical culture, modern tech, self-defense gear, electronics, and premium lifestyle products come together in one powerful shopping experience.

WHY CUSTOMERS CHOOSE US

  • Premium curated products
  • Fast nationwide South African delivery
  • Secure online checkout
  • Trend-focused tactical & tech collections
  • Reliable customer support
  • Constantly updated product range
  • Trusted by thousands of customers nationwide

FAST SOUTH AFRICA-WIDE DELIVERY

We work hard to ensure your order arrives quickly, securely, and professionally packaged

DELIVERY INFORMATION

  • Nationwide shipping available
  • Tracking provided on dispatched orders
  • Secure packaging for sensitive products
  • Delivery times vary by region
  • Major cities usually deliver faster

DISCREET PACKAGING

Many products are shipped in discreet packaging for added privacy and professionalism.

CUSTOMER SUPPORT THAT HAS YOUR BACK

Your experience matters to us. We aim to provide reliable support before and after your purchase.

RETURNS

Returns may be accepted based on product condition, packaging condition, time since delivery, and product category restrictions.

NEED HELP?

Our support team can assist with product guidance, order updates, compatibility questions, technical support, and returns & exchanges.

IMPORTANT PRODUCT SAFETY INFORMATION

Certain products sold by GUNMANSA require responsible handling and adult supervision where applicable.

RESPONSIBLE USAGE

  • Understanding local laws
  • Safe handling practices
  • Proper storage
  • Responsible usage
  • Using products only for lawful purposes

KNOW BEFORE YOU BUY

Some products may require setup or accessories, have age-related restrictions, need batteries/gas/ammunition/accessories, or require maintenance.

SAFE. SECURE. VERIFIED.

Shop confidently knowing your information and payments are protected.

PAYMENT OPTIONS

  • Secure card payments
  • EFT payments
  • Online payment gateways
  • Mobile-friendly checkout options

SECURITY FEATURES

  • Encrypted checkout systems
  • Secure payment processing
  • Fraud protection measures
  • Trusted payment providers

QUICK ANSWERS

Q: How long does delivery take?

Delivery times vary depending on your location and product availability.

Q: Will I receive tracking?

Yes — tracking details are typically provided once orders are dispatched.

Q: Can I return a product?

Eligible returns may be accepted according to our returns policy.

Q: Do products come with warranty?

Some items include supplier/manufacturer warranty coverage.

Q: Do you offer nationwide shipping?

Yes — we ship across South Africa.

Ultimate Buyer's Guide

Everything you need to know before upgrading your vehicle

Choosing the Right Performance Parts

Help customers find the perfect upgrade for their vehicle.

  • Identify your vehicle make, model and year
  • OEM vs aftermarket parts
  • Daily driving vs track use
  • Street legal vs race-only components
  • Compatibility checks
  • Budget vs premium upgrades
  • Performance goals (power, handling, braking, aesthetics)

Vehicle Compatibility Guide

Everything customers need to know before purchasing.

  • VIN compatibility
  • Engine code matching
  • Wheel offset and PCD
  • Tyre sizing
  • Brake fitment
  • Suspension compatibility
  • Turbo and ECU compatibility
  • Manufacturer part numbers
  • Installation requirements

Motorsport Buying Guide

Guide customers through every major category.

Performance Exhausts

  • Best for: Increased power and aggressive sound
  • Benefits: Improved exhaust flow, weight reduction
  • Typical lifespan: 5-10 years
  • Maintenance: Inspect for leaks and corrosion annually
  • Beginner: Cat-back systems
  • Professional: Full turbo-back systems

Turbochargers

  • Best for: Maximum power gains
  • Benefits: Significant horsepower increase
  • Typical lifespan: 100,000-150,000 km
  • Maintenance: Regular oil changes, boost leak checks
  • Beginner: Bolt-on upgrades
  • Professional: Custom turbo kits

Suspension Kits & Coilovers

  • Best for: Improved handling and stance
  • Benefits: Adjustable ride height, better cornering
  • Typical lifespan: 50,000-100,000 km
  • Maintenance: Check for leaks, alignment every 10,000 km
  • Beginner: Lowering springs
  • Professional: Fully adjustable coilovers

Brake Upgrades

  • Best for: Improved stopping power
  • Benefits: Shorter stopping distances, fade resistance
  • Typical lifespan: Pads 30,000-70,000 km, Rotors 50,000-100,000 km
  • Maintenance: Inspect pads and rotors every service
  • Beginner: Performance pads and rotors
  • Professional: Big brake kits

Wheels & Tyres

  • Best for: Aesthetics and performance
  • Benefits: Weight reduction, improved grip
  • Typical lifespan: Wheels lifetime, Tyres 40,000-80,000 km
  • Maintenance: Check pressure weekly, rotate every 10,000 km
  • Beginner: Alloy wheels with performance tyres
  • Professional: Forged wheels with track tyres

ECU Tuning

  • Best for: Unlocking hidden power
  • Benefits: Optimized fuel maps, increased performance
  • Typical lifespan: Permanent (software)
  • Maintenance: Update maps as needed
  • Beginner: Stage 1 tunes
  • Professional: Custom dyno tuning

Intake Systems

  • Best for: Improved airflow and sound
  • Benefits: Better throttle response
  • Typical lifespan: 100,000+ km
  • Maintenance: Clean filter every 20,000 km
  • Beginner: Drop-in filters
  • Professional: Cold air intake systems

Racing Seats & Safety Gear

  • Best for: Track safety and support
  • Benefits: Better lateral support, safety compliance
  • Typical lifespan: Seats 10+ years, Helmets 5 years
  • Maintenance: Inspect harnesses and helmet regularly
  • Beginner: Sport seats
  • Professional: FIA-approved racing seats and harnesses

Installation & Maintenance

Prepare customers before and after purchase.

  • DIY vs professional installation
  • Required tools
  • Break-in procedures
  • Torque specifications
  • Alignment recommendations
  • Routine maintenance
  • Cleaning tips
  • Inspection intervals
  • Common mistakes to avoid
  • Warranty considerations

Shipping, Returns & Warranty

Build customer confidence before checkout.

  • Delivery estimates
  • Order processing times
  • International shipping
  • Tracking information
  • Returns process
  • Warranty coverage
  • Manufacturer warranties
  • Damaged shipment procedure
  • Missing items
  • Exchange policy

Frequently Asked Questions

General

How do I know if a part fits my vehicle?
Check the product compatibility section on each listing. You can also contact our team with your VIN number for confirmation.
Can I install these parts myself?
Many parts can be installed by experienced DIY enthusiasts. However, we recommend professional installation for complex components like turbochargers and suspension systems.
Are aftermarket parts reliable?
We only stock reputable brands with proven track records. Many aftermarket parts offer superior performance and durability compared to OEM components.
Do performance parts affect my warranty?
Modifications may affect your manufacturer warranty. Check with your dealer before installation. Our parts come with their own manufacturer warranties.

Performance

Will this increase horsepower?
Power gains vary by part and vehicle. Check individual product descriptions for estimated performance improvements.
Do I need ECU tuning?
Major modifications like turbo upgrades typically require ECU tuning to maximize performance and ensure reliability.
Which upgrade gives the biggest performance gain?
ECU tuning and turbo upgrades typically provide the most significant power increases. However, a balanced approach with supporting mods is recommended.
Can I mix different performance brands?
Yes, but ensure compatibility. Some systems work best when components are from the same manufacturer.

Wheels & Suspension

What wheel size should I choose?
Consider your vehicle's specifications, intended use, and local regulations. Larger wheels improve aesthetics but may affect ride quality.
Will lowering affect ride quality?
Lowering typically results in a firmer ride. Quality coilovers offer adjustability to balance comfort and performance.
Are coilovers better than lowering springs?
Coilovers offer more adjustability and better performance but cost more. Lowering springs are a budget-friendly option for stance improvement.
How often should suspension be serviced?
Inspect suspension components every 20,000 km or annually. Coilovers may need rebuilding every 50,000-100,000 km depending on use.

Brakes

When should brake pads be replaced?
Replace pads when they reach 3mm thickness or if you hear squealing. Performance pads may wear faster but offer better stopping power.
Are drilled or slotted rotors better?
Slotted rotors are better for track use. Drilled rotors look great and work well for street driving. Drilled and slotted offer both benefits.
Do performance brakes require bedding in?
Yes, proper bedding-in is essential for optimal performance. Follow the manufacturer's break-in procedure carefully.

Shipping

How long does delivery take?
Domestic orders typically arrive within 3-7 business days. International shipping times vary by destination.
Can I track my order?
Yes, you'll receive a tracking number via email once your order ships. Track your package through our website or the courier's site.
Do you ship internationally?
Yes, we ship to select international markets. Shipping costs and delivery times vary by location. Contact us for specific details.

Returns

Can I return a part if it doesn't fit?
Yes, unused parts in original packaging can be returned within 30 days. Some items may be subject to a restocking fee.
What if my item arrives damaged?
Contact us immediately with photos of the damage. We'll arrange a replacement or refund at no cost to you.
How do warranty claims work?
Contact us with your order number and issue description. We'll coordinate with the manufacturer to process your warranty claim.