JTR Speakers
JTR Captivator 4000ULF-LP Subwoofer
Pairs well with
In stock! Ships within 1-2 business days.
90-day risk-free trial
2-Year Warranty
Complimentary shipping & returns
JTR Captivator 4000ULF-LP Subwoofer
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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Customer Support
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FAQ’s
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Contact Us
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Overview
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All new drivers, 36mm xmax, 30% lower distortion than previous reference drivers, over a pound of Aluminum within the driver's motor, Less than 1mh inductance
- A 21" driver would need 26mm xmax to equal our 18" driver with 36mm of xmax.
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New: DSP with Auto input select, advanced auto turn on & even lower noise floor
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New: Lower distortion, increased output and additional low-end
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Bass Reflex Design tuned to 10hz
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Huge slot port for minimal turbulence and compression
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Heavily braced cabinet
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Completely front firing for versatility
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Magnetically attached grill
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Built in 4000 watt RMS, up to 95% efficient, DSP optimized, class D amplifier
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International, 240 volt version +$300
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RCA and XLR inputs
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12 volt trigger and auto turn on
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Amplifier warranty increased to 3 years
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“LF Adjust” for a flat response outdoors and in small rooms
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Ambidextrous amplifier (left or right side)
FAQs
Please read our FAQs page to find out more.
Do you price match?
Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.
Do you offer free shipping?
Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.
Where is your showroom?
We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.
Can I buy online without visiting the showroom?
Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.
Do you offer financing?
Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.
Do you install systems as well as sell equipment?
Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.
Do you provide support after installation?
Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.