Powered subwoofer (Black)

  • JBL SUB 550P


  • JBL SUB 550P

    Back (shown in cherry)

  • JBL SUB 550P

    Facing left

  • JBL SUB 550P

    Facing right

  • JBL SUB 550P

    Grille off

  • JBL SUB 550P


  • JBL SUB 550P

    Woofer (close-up)

Item #: 109SB550PB

Review Summary

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Our take on the JBL SUB 550P

by Dave Bar

Why add a powered subwoofer?

A powered subwoofer gives you bass you can feel as well as hear. Our customers love the depth and impact their subs add to music and movies. We hear comments like "it brings out sounds I didn't know existed in discs I've watched a million times." Powered subwoofers aren't just for big bass that rattles your picture frames; they can also deliver tight, accurate lows. If you haven't shopped for a powered sub in a while, you might be surprised at how small they get. Look for an ultra-compact model if you want to tuck your sub away under an end table or in a corner.

Powerful-yet-refined performance

Add tight, accurate bass to your home audio system with this potent powered subwoofer from JBL. The SUB 550P packs 300 watts of amplification and a 10" woofer into a modestly sized cabinet that fits easily into most living rooms. Thanks to speaker technology developed by JBL's professional division, you'll hear powerful, natural lows that put excitement into your music listening and bring your movies to explosive cinematic life.

Airtight design for solid bass

grille off shot

Unlike most subs, the 550P uses an acoustic suspension (sealed) cabinet design. A sealed enclosure more precisely controls the motion of the woofer cone than ported designs to give you smoother, more even response in the deepest frequencies. Included metal carpet spikes help decouple the subwoofer from the floor to improve bass impact while a front-firing driver reduces unwanted "boominess" and allows placement against a wall or in a corner to provide maximum bass output.

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  • 10" front-firing PolyPlas™ cone with cast aluminum frame
  • 300-watt RMS amplifier
  • frequency response 27-150 Hz
  • variable 50-150 Hz crossover
  • removable metal floor spikes for placement on carpeted surfaces
  • phase switch
  • auto on/off
  • line level/LFE (low frequency effects) input
  • 17-1/2"W x 14-15/16"H x 15"D
  • warranty: 5 years woofer, 1 year electronics
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Enclosure Acoustic Suspension
Video Shielded No
Woofer Size (inches) 10
Woofer Composition PolyPlas
Firing Direction Front
Wireless No
Preamp-Level Inputs Yes
Speaker-Level Inputs No
Speaker-Level Outputs No
Low-Pass Crossover Freq 50-150 Hz
High-Pass Crossover Freq None
Phase Switch Yes
Amplifier Output (watts) 300
Frequency Response 27-150 Hz
Height (inches) 17-3/4
Width (inches) 17-7/16
Depth (inches) 17-1/8
Weight 50 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty 1 Year
Amplifier Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • 10" Powered subwoofer
  • Detachable grille (installed)
  • 6' AC Power cord
  • 15' Mono-sub RCA cable
  • 4 Spiked feet
  • Owner's Manual
  • Warranty sheet

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.



Overview: The JBL Studio SUB 550P powered subwoofer incorporates a 10" front-firing woofer and a built-in hi    gh-performance 300-watt RMS amplifier that deliver the powerful, dynamic and accurate low-frequency performance that makes your film soundtracks and music come alive. And with line-level and LFE inputs, adjustable crossover & phase controls, plus automatic turn on/off, the SUB 550P is also simple to connect and set up.

300 Watt Amplifier: The 300 watt (RMS) high-output amplifier generates less heat than conventional amplifiers to play louder with less distortion for more realistic bass.

10" Front-Firing Woofer: The JBL Studio SUB 550P subwoofer features a front-firing 10" PolyPlas cone woofer with a cast-aluminum frame. It can reproduce both lightning-fast transient sounds and sustained low notes for heightened realism and excitement. Placed against a wall or in a corner, the front-firing JBL SUB 550P subwoofer delivers maximum bass impact to heighten your movie-watching experience.

Sealed Enclosure: A sealed (acoustic suspension) enclosure more precisely controls the motion of the woofer cone than ported designs, for smoother, more realistic response in the deepest frequencies.

Metal Floor Spikes: Four metal spikes are supplied for use when you place the subwoofer on a carpeted surface. Using the spikes decouples the subwoofer from the floor and prevents unwanted acoustic damping. The metal spikes add 0.1875" to the height of the powered sub.

Placement: The performance of a subwoofer is directly related to its placement in the listening room and its physical position relative to the other speakers in the system. While it is true that in general our ears do not hear directional sounds at the low frequencies where subwoofers operate, when installing a subwoofer within the limited confines of a room, the reflections, standing waves and absorptions generated within the room will strongly influence the performance of any subwoofer system. As a result, the specific location of the subwoofer in the room does become important to the amount and quality of bass that is produced.

  • Placing the powered sub in a corner generally will maximize the amount of bass in the room. However, corner placement can also increase the destructive effect of standing waves on bass performance. This effect can vary depending on the listening position; some listening positions may yield very good results while others may have far too much (or too little) bass at certain frequencies.

  • Placing the subwoofer along the same plane as the left & right speakers can produce the best integration between the sound of the subwoofer and that of the left & right speakers.

  • In some rooms, the best performance could even result from placing the subwoofer behind the listening position.

Note: We strongly recommend that you experiment with placement before choosing a final location for the JBL power subwoofer.


Input Mode: When this switch is in the "Normal" setting, the input signal from the Line In connectors is active. When this switch is in the "LFE" setting, the input signal from the LFE In connector is active, and the subwoofer's internal crossover is bypassed.

Volume Level: Use this control to adjust the subwoofer's volume relative to your system's speaker volume. Turn the knob clockwise to increase the volume; turn the knob counterclockwise to decrease the volume. Once you have balanced the subwoofer's volume with that of the other speakers in your system, you shouldn't have to change it.

Low-Pass Crossover: The powered subwoofers' low-pass crossover frequency is adjustable (50-150Hz) for optimal performance with a variety of different speaker types. This control determines the highest frequency at which the subwoofer reproduces sounds. The higher you set the Crossover control, the higher in frequency the subwoofer will operate and the more its bass will "overlap" that of your system's other speakers. This adjustment helps achieve a smooth transition of bass frequencies between the subwoofer and the other speakers for a variety of different rooms and subwoofer locations.

Note: The crossover control functions only when the Input Mode switch is in the "Normal" position. When the switch is in the "LFE" position, the subwoofer's built-in crossover and crossover control are bypassed.

Phase Control: The JBL SUB 550P subwoofer has a phase switch (0°/180°) to ensure its driver moves in sync with the loudspeaker drivers in your system for clean, coherent output across all frequencies. This switch determines whether the subwoofer driver's piston-like action moves in and out in phase with your system's other speakers. If the subwoofer were to play out of phase with the other speakers, the sound waves from the other speakers could partially cancel out the sound waves from the subwoofer, reducing bass performance and sonic impact. This phenomenon depends in part on the placement of all the speakers relative to each other in the room.

Power Switch: Set this switch in the "On" position to put the subwoofer in the Standby mode (the On/Standby LED lights red); set this switch in the "Off" position to turn the subwoofer off.

Auto Turn On/Off: The JBL powered subwoofer automatically turn itself on when sensing an audio signal and switches into standby mode after 10 minutes of no signal. An LED indicates whether the subwoofer is in the On or Standby state.

  • When the LED glows green, the subwoofer is turned on.
  • When the LED glows red, the subwoofer is in the Standby mode.
  • When the LED is off, the subwoofer's Power switch is set to "Off".


Line-Level Inputs: The JBL SUB 550P powered subwoofer is fitted with a set of stereo line-level (RCA) inputs. The audio signal from these inputs pass through the subwoofer's internal low-pass crossover. When you're connecting the subwoofer to the preamp or subwoofer outputs of a home theater receiver that does not have its own low-pass crossover network, use both line inputs.

Note: You must set the Input Mode switch in the "Normal" position.

LFE Input: The powered sub's "Left" line-level input can be used as an LFE input. The audio signal from this input bypasses the subwoofer's internal low-pass crossover. When you're connecting the subwoofer to the dedicated subwoofer output of a home theater receiver that has its own low-pass crossover network, use the LFE input.

Note: You must also set the subwoofer's Input Mode switch in the "LFE" position.

Detachable AC Power Cord: The JBL SUB 550P comes with a detachable 6' AC power cord.

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Written By RDPUERTO, Laredo, TX on Monday, July 29, 2013
Crutchfield Customer Review (What's this?)
I replace my old infinity sub, and i'm glad I did it!! too much power!.
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For a more in-depth review and enhanced detailed information on the JBL SUB 550P, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_109SB550PB/JBL-SUB-550P-Black.html ).