Free shipping to 48 States. Ships same day if ordered before 2pm CST. See details...

Harmony Audio HA-C154 Competition Dual 15 Sub 2800W Slot Ported Sub Box

Was $909.99 Save: $424.00 (47%)
In Stock FREE delivery
Invalid Selection!
Harmony Audio HA-C154 Competition Dual 15" Sub 2800W Slot Ported Sub Box
Harmony Audio HA-C154 Competition Dual 15" Sub 2800W Slot Ported Sub Box

This Package Includes the Following Items:

  • 1 x CustomCar Audio Dual 15" Slot Ported Sub Box
  • 2 x Harmony Audio HA-C154 Car Stereo Competition Carbon 15" Sub 2800W Dual 4 Ohm Subwoofer New

CustomCar Audio Dual 15" Slot Ported Sub Box:

  • Dual 15" Vented Sub Box
    • Mounting Depth: 16"
    • Air Space: 3.60 Cubic Feet Per Sub
    • Vented Enclosure
    • Dimensions: Width 42-1/4" x Height 19" x Depth 22"
  • Vented design allows for maximum output
  • Constructed with High Quality MDF
  • High Quality Binding Terminal Cup (Accepts Banana Terminal Plugs OR Bare Wire 'up to 10GA')
  • High Quality Gray Carpet

Harmony Audio HA-C154 Car Stereo Competition Carbon 15" Sub 2800W Dual 4 Ohm Subwoofer New:


  • 15" Carbon Series Car Subwoofer
  • Power Handling:
    • Peak: 2800 watts
    • RMS: 1400 watts
  • Sensitivity: 88.7dB
  • Frequency Response: 39Hz-300Hz
  • Mounting Depth: 8-1/4"
  • Mounting Cutout Diameter: 13-13/16"
  • Min Sealed Box Volume (Cubic Feet): 1.76
  • Max Sealed Box Volume (Cubic Feet): 3.35
  • Min Vented Box Volume (Cubic Feet): 3.88
  • Max Vented Box Volume (Cubic Feet): 6.36
  • Magnet Weight: 202 Ounces
  • 2.5" Copper Voice Coil
  • Dual 4 Ohm


  • Fiber Lightweight Cone
  • Stitched High Roll Foam Surround
  • Tinsel Leads Woven into Spider
  • Die-Cast Aluminum Basket
  • High Flux Ferrite Magnet

Detailed Specifications:

  • Voice Coil Diameter: 65.5mm
  • Voice Coil Height: 50mm
  • HE Magnetic Gap Height: 15mm
  • Voice Coil Bobbin: Black Aluminum
  • Xmax: 17.5mm
  • Magnet Layers: 4
  • Cms (Suspension Compliance): 0.073
  • Qms (Mechanical Q Factor): 4.12
  • Qes (Electrical Q Factor): 0.46
  • Qts (Total Q Factor): 0.41
  • Mms (Moving Mass): 349.3
  • Vas (Equivalent Volume of Compliance): 52.3 L
  • Rs (Resonant Frequency): 39 Hz
  • SD (Effective Piston Area): 829.5 cm2

This item is New
HiFiSoundConnection Warranty: 1-Year
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

There are no reviews yet.
Let others know what you think and be the first to write a review.

Questions & Answers

This product has no questions yet.

Login to post a question

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 14-Days for a refund, minus a 20% restocking fee, and minus any shipping charges we paid to get the item to you.