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JBL BassPro SL

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General Features:

  • 8" JBL BassPro SL Powered Under-Seat Compact Subwoofer Enclosure
  • Power Output:
    • Peak: 250 Watts
    • RMS: 125 Watts
  • Efficient Class D Amplifier
  • Proprietary, shallow-profile woofer
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • Speaker-level (high-level) inputs with Audio Sense Auto-on
  • Gold-plated Power, Ground and Remote screw-down connections
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Wired Bass Remote Controller Ready, Compatible with JBL RBC (sold separately)
  • Input sensitivity:
    • Low level: 200mV - 2V
    • High level: 2V - 20V
  • Frequency Response: 35 - 120 Hz
  • Variable low-pass filter: 50 - 120 Hz, 12 dB/octave
  • Variable Bass Boost: 0 to +9 dB bass boost at 70 Hz
  • Selectable Phase Switch: 0° - 180°
  • Maximum Current Draw: 12A
  • Quiescent Current Draw: <800mA
  • Fuse Rating: 20 A x 1
  • 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 9-7/8"W x 13-9/16"L x 2-13/16"H
  • Authorized Internet Dealer
  • 90 Day Manufacturer's Warranty

Check out the JBL BassPro SL Owner's Manual


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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1 Star

Average Attribution Rating

Browse 3 questions and 6 answers
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Why did you choose this?
Sonic Electronix Store
Affordable. JBL quality. Perfect for the small space I needed to put it in. Mounted 2 in the rear of a Scion tC. Fit beautifully mounted directly to the back of the rear seat.
ROBERT T on May 30, 2016
Includes both high and low level inputs which makes it easier to interface to OEM standard radio system.
GLEN H on Dec 4, 2015
I have read numerous comments on the high level of quality and performance on the JBL Powered Subwoofer. That's my reason for the purchase.
Dechon G on Feb 24, 2016
limited space
curt i on Oct 29, 2015
Hello Rick, maybe it would be easier if you could tell me what comes with the amp. what's in the box besides the amp ? Is the short harness that actually plugs into the amp in the box ? installation instructions ?,
Marvin H on Aug 2, 2016
Best Answer: Hi Marvin,

Don't forget, these questions are sent to Customers, so I suggest not personalizing them. Luckily I saw your question so I'm able to respond. I simply moderate and chime in when I can; but can't often do so when we're getting hundreds of questions in at a time =] .

To your request. The manual is linked in the description. But, I'm now pretty sure you are referring to the High Level Input - which Does have a harness/plug for it.
Reply · Report · Rick MStaff on Aug 2, 2016
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Does this come with wiring harness?
Marvin H on Aug 1, 2016
Best Answer: Hi Marvin,

Please elaborate. Amplifiers don't typically come with a 'wiring harness', but you may mean something else. A high level input option for the High level in, perhaps? or maybe a wiring kit? let us know.
Reply · Report · Rick MStaff on Aug 1, 2016
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number

BassPro SL



Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JBL BassPro SL