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KS212C K Cardioid Subwoofer

Powered by a 3,600 Watt Class D amplifier, processed with the latest DSP technology, and featuring dual 12-inch long excursion drivers each arranged in a 6th order bandpass chamber, these components all combine seamlessly to produce a staggering 15 dB more output at the front of the cabinet than at the rear.

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The Advantage We Bring

Expert Team

Top-Notch Equipment

Custom Solutions

Seamless Execution

Key Features

  • Cardioid Subwoofer Design
Focuses bass energy forward while significantly reducing rearward sound.

  • 3,600W Class D Amplification
Massive power output for deep, high-impact low-frequency performance.

  • Advanced DSP Processing
Latest digital signal processing ensures precise control and optimized output.

  • Dual 12″ Long-Excursion Drivers
High-performance drivers engineered for powerful, extended low end.

  • 6th-Order Bandpass Chamber Design
Maximizes efficiency, punch, and directional control.

  • 15 dB Front-to-Rear Rejection
Produces dramatically more output at the front of the cabinet than the rear.

  • Precision Low-Frequency Control
Ideal for stages, venues, and events requiring tight bass management.

  • Professional Touring Performance
Designed for demanding live sound, rental, and production environments.

Delivery & Installatin

Professional Delivery Across the Greater Boston Area

We provide reliable delivery of professional AV equipment across Boston, Cambridge, Worcester, and surrounding cities. Our team coordinates directly with your venue to schedule precise delivery times, ensuring smooth access, efficient unloading, and a stress-free start to your event setup.

Full On-Site Setup & System Testing

Our experienced technicians handle complete installation, including equipment placement, cable management, sound calibration, and lighting configuration. Every system is thoroughly tested before the event begins to ensure flawless performance and professional presentation.

On-Site Technical Support

Need support during your event? Our technicians can remain on-site to monitor audio levels, manage visual systems, and quickly resolve any technical issues. This ensures your event runs smoothly while you focus on your guests and program.

Efficient Breakdown & Equipment Removal

Once your event concludes, our team returns promptly to dismantle equipment, pack components safely, and remove all gear from the venue. We manage the entire breakdown process efficiently so you don’t have to worry about logistics or cleanup.

Areas We Serve

Professional AV Production Across the Region

From corporate conferences and concerts to private celebrations and large-scale productions, Mass AV delivers professional audio, video, and lighting solutions across the Greater Boston region. Our team combines high-end equipment, experienced technicians, and seamless execution to create unforgettable event experiences.

  • Boston
  • Cambridge
  • Quincy
  • Brookline
  • Somerville
  • Newton
  • Waltham
  • Medford
  • Worcester
  • Dedham
  • Framingham
  • Lowell
  • Providence, RI
  • Manchester, NH
  • Nashua, NH

Ideal for

  • Weddings
  • Corporate Events
  • Conference
  • Private Parties
  • Outdoor Events
  • DJs & Live Performences

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Everything You Need to Know

Frequently Asked Questions

Below we have listed the most frequently asked questions and answers. Is your question not listed? Please feel free to contact us!

What types of events do you support?

We work with weddings, corporate events, brand activations, nightclubs, private parties, and large-scale productions.

Yes. All rentals include professional delivery, installation, testing, and post-event breakdown by our team.

Absolutely. We offer custom monograms, full vinyl wraps, lighting patterns, and visual configurations tailored to your event.

We work with weddings, corporate events, brand activations, nightclubs, private parties, and large-scale productions.

Dance floors are modular and scalable. We’ll size the setup based on your venue layout and guest count.

Yes. Our technicians remain available to ensure flawless performance throughout your event.

We recommend booking as early as possible, especially during peak wedding and event seasons.