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Harmony Audio HA-FT12 Car Stereo Flatline Loaded 12 Truck 800W Sub Box Enclosure

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Harmony Audio HA-FT12 Car Stereo Flatline Loaded 12 Truck 800W Sub Box Enclosure
Harmony Audio HA-FT12 Car Stereo Flatline Loaded 12 Truck 800W Sub Box Enclosure

Ultimate Sub Enclosures

Harmony Audio loaded enclosures were designed with one thing in mind, big time bass output while being the smallest psychical footprint possible. They also happen to look great while doing it with durable black and gray carpet and Harmony Audio embroidered logo on each model. Common features include high quality MDF wood construction, custom designed port on vented models, spring loaded terminal cup and recessed subwoofers for a clean look.



  • Loaded Single 12" Flatline Series Sealed Sub Box
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Sensitivity: 87.3dB
  • Frequency Response: 26Hz - 300Hz
  • Enclosure Material: 5/8" MDF Wood
  • Enclosure Dimensions: 20-1/2" Width x 13-5/8" Height x 4-1/4" Top Depth x 8-5/8" Bottom Depth
  • 2 Ohm @ Terminal Cup


  • Compact Design Ideal for Truck
  • Recessed Subwoofer Clean Look
  • Durable Black and Gray Carpet
  • Embroidered Harmony Audio Logo
  • Spring Loaded Terminal Cup
This item is New
1 Year Manufacturer's Warranty
Proposition 65 Warning for California Consumers

WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to

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Frequently Asked Questions for this Product:

When will my order ship?
Most orders placed before 3:00 PM CST will ship within 24 hours. If you need a product by a specific time please contact us at 1-877-275-4434 before ordering.
When will I receive my tracking number?
Most tracking numbers are sent out around 5:30 PM CST of the following business day. Please allow 24-business-hours after ordering before requesting tracking information.
How fast will I receive my product?
Depending on your location it may take 3-4 business days for your order to arrive. Your tracking number will tell you the exact day your order will arrive. If you need an order by a specific date we recommend you call us at 1-877-275-4434

Return Policy
You may return this item in its original condition within 30-Days for a refund, minus a 20% restocking fee, and minus any shipping charges we paid to get the item to you.