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RTJ 18 Subwoofer

Modular Subwoofer

Key Features

  • 1x 18” Sub Module
  • 2400w External Amplifier
  • 10hz-200hz (In Room)
  • 6 amp @ 120 volts (¼ Power)





JTR Speakers brings you the RTJ 18, a premium powered subwoofer. Developed strategically to deliver an incredible home theater experience, the RTJ lineup is fantastic. These outstanding subwoofers are sold individually (as shown) or in quantities of 2 and 4. Also, the 18 series passive subs come with a separate rack mountable amplifier. Also, since these are modular, you can configure the ultimate system. We will help you build your dream setup how you want it!

  • Small and Modular: The floor standing speakers and subs were specifically designed to have the same footprint. So, at 15" they are stackable and also shallow enough to maximize your space.
  • Ultimate Soundscape: This premium powered subwoofer produces monumental and majestic sound.
  • Impressive Construction and Finishing: All cabinets are made to order in the U.S.A constructed in Baltic Birch and finished in a striking non-reflective black textured paint.

Being that this product is Made to Order in the U.S.A, it will require some lead time. Contact us today and we will help you create your very own RTJ Audio system. 

Product Highlights

Dimensions and Warranty

  • 22.5" x 22.5" x 15"
  • Warranty: 5 Year Manufacturer Defect
  • Our 30-day money-back guarantee
  • MFR # 18Sub

Additional information


RTJ Audio

Frequency Response

10hz – 200hz (In Room)

Low Frequency Point


Dimensions (H x L x P)

22.5" x 22.5" x 15"


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