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JBL Arena Sub 100P

Powered subwoofer

15 Reviews

Item # 109A100P

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Was: $299.99

Sale: -$75.00

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Our take on the JBL Arena Sub 100P

Are you looking to add some extra bass excitement to your system? Then check out JBL's Arena Sub 100P. This powered subwoofer is guaranteed to dish out low, loud, and lifelike bass whenever your music and movies demand it. The Sub 100P's 10" high-output woofer cone is designed to pump out quick, controlled bass, and it's backed by 100 watts of continuous built-in amplification. 

JBL Arena Sub 100P powered subwoofer

Bring the bass

Are you looking to add some extra bass excitement to your system? Then check out JBL's Arena Sub 100P. This powered subwoofer is guaranteed to dish out low, loud, and lifelike bass whenever your music and movies demand it. The Sub 100P's 10" high-output woofer cone is designed to pump out quick, controlled bass, and it's backed by 100 watts of continuous built-in amplification. 

Build a JBL Arena sound system

The Sub 100P is a perfect complement to JBL's Arena series speakers. You can build an entire full-range stereo music system by combining this subwoofer with JBL's  Arena 120 or 130 bookshelf, or Arena 170 or 180 floor-standing speakers. Add the Arena 125C center channel speaker for crisp, clear dialogue and enhanced home theater sound.

Product Highlights:

  • frequency response: 41-150 Hz
  • built-in Class D amplifier delivers 100 watts of continuous power, 200 watts dynamic power
  • 10" high-output polycellulose woofer
  • bass reflex (ported) cabinet design
  • rear-mounted level, crossover, phase, and power controls
  • continuously variable low-pass 50-150 Hz crossover
  • phase switch (0/180°)
  • power mode: on or auto on/off
  • separate power on/off switch
  • line-level/LFE RCA input
  • four removable metal carpet spikes included
  • black woodgrain vinyl finish
  • 14-1/2"W x 14-5/16"H x 16"D
  • weight: 24 lbs.
  • warranty: 5 years speaker, 1 year amplifier
  • Our 60-day money-back guarantee

What's in the Box:

  • Powered subwoofer
  • 6' AC power cord
  • 4 Spike feet
  • Owner's Manual
  • Important Safety Instructions

This sub works fine for what it is. Won't rattle the house off the foundation, but delivers what I expected. Nice fit with 4 JBL Arena 81 8" in ceiling speakers. Picture is deceptive. Not a rectangular box but a tapered box. Narrower towards the back. Functions just fine.

Anonymous, Golden Valley, MN


JBL Arena Sub 100P Reviews

Average Customer Review(s):

(15 Reviews)

Decent sound for the price

Ren from Branford, FL on 5/29/2018

Crutchfield Customer Review (What's this?)

I was looking for an inexpensive replacement for an old JBL powered subwoofer that just gave up. I didn't think it was worth getting it repaired given its age and the cost of a new one. Maybe that was a mistake. This unit is adequate for my requirements in my current house, (I no longer have a man-cave) but it doesn't have that old jBL bass I've been accustomed to over the many years I've used their speakers. Maybe because it's made in China. However, for the price, it works really well in my TV viewing room-I share with my wife.

Pros: Inexpensive Easy to correct phasing No obvious distortion

Cons: I wish the main power switch was in front because sometimes I want to turn it completely off-and I have to go fishing in the back of the unit. (Common problem with most.)

JBL Arena Sub 100P

Anonymous from Golden Valley, MN on 5/28/2018

Crutchfield Customer Review (What's this?)

This sub works fine for what it is. Won't rattle the house off the foundation, but delivers what I expected. Nice fit with 4 JBL Arena 81 8" in ceiling speakers. Picture is deceptive. Not a rectangular box but a tapered box. Narrower towards the back. Functions just fine.



JBL Arena Sub 100P

Anonymous from Topeka, KS on 12/21/2017

Crutchfield Customer Review (What's this?)

So far So good It added a lot more base than periods subwoofer which finally give out after 20 years. t was also a JBL. I hope this lasts that long. My speakers are JBL and are also 20 years old and still clear crisp sound.. would highly recommend Crutchfield for all your electronic needs.



Great speaker

Derek from Suffolk VA on 9/22/2017

Crutchfield Customer Review (What's this?)

Great sounding speaker. Music and movies sound good.

Pros: Good tight bass

Cons: None yet

JBL Arena Sub 100P

GENE from STOCKBRIDGE, GA. on 8/11/2017

Crutchfield Customer Review (What's this?)

JBL is a very Impressive subwoofer for the money.

Pros: Great JBL subwoofer, replacement for a blown Polk Audio Sub.

Cons: none

Nice Sub

Jeffrey from Alexandria, LA on 7/25/2017

Crutchfield Customer Review (What's this?)

Impressive little sub. For this price point it's hard to beat. If you're looking to "rattle the walls", sure it will work, but if you're like me ans just want to compliment your towers at a reasonable cost, this is the sub. Corner placement is where it really shows off.

Pros: Build quality, deep bass from a 10. Buy with confidence.

Cons: None worth mentioning for a sub under $500

JBL Arena Sub 100P

Darryl B from Chapel Hill NC on 7/16/2017

Crutchfield Customer Review (What's this?)

Always loved JBL It's a 10

Pros: None

Cons: Only comes in balck

Great Purchase

Rob from Bonita Springs, FL on 6/17/2017

Crutchfield Customer Review (What's this?)

Top notch! I purchased this unit to replace a another JBL subwoofer after 16 years of use. Personally, I love their products. They are solid and perform outstanding for my music listening needs.

Pros: Easy setup, auto on / shutoff, solid construction & reputable name.


JBL!! Rules

Keith from Honolulu, Hawaii on 4/1/2017

Crutchfield Customer Review (What's this?)

I bought JBL 100P sub as a replacement for a blown Klipsch. So far the JBL quality has not disappointed!!!



Great Bass

Richard from Mount Holly, NC on 3/23/2017

Crutchfield Customer Review (What's this?)

Great Product Awesome Deep Bass in my movies and my TV shows

Pros: Great Bass Good Power

Cons: Did not find anything

JBL Arena Sub 100P

Ken from Broomall, PA on 3/22/2017

Crutchfield Customer Review (What's this?)

When I first hooked it up I was a little disappointed at the sound. After it "Broke In" and I adjusted it to my liking I am very pleased with this subs performance

Pros: Great value, smooth and powerful bass

Cons: None so far

JBL Arena Sub 100P

Anonymous from Elkhorn, Waterford on 1/21/2017

Crutchfield Customer Review (What's this?)

Adds the sounds that you feel as much as you hear . I have floor standing front speakers with substantial bass response and this sub compliments them nicely. Volume adjustment on the sub and speaker placement make big differences in fittting the sound to the room .



Great Speaker

Anonymous from Hialeah, FL on 10/10/2016

Crutchfield Customer Review (What's this?)

Could not have picked a better sub for the money.

Pros: Sounds wonderful, price was excellent for a quality product.

Cons: Haven't found any so far.

Great Combination

Stan from Tulsa on 7/27/2016

I purchased the complete Arena series set up. Went with the Arena 180's over the 170's for more performance. Bought two of the Arena subwoofers for a medium sized room and was pleasantly surprised that one would have been plenty. Was a bit concerned at first hookup, as the sound seemed a bit muffled but soon discovered after about 30 hours of break in time came a beautiful sounding sub that had amazing amounts of clear bass for music or cinema. In comparing price I thought this to be a bit expensive for a 10 inch sub. I soon discovered the class "D" built in amp was well worth the price. This attractive sub won't disappoint. Can be set to mild or wild bass with amazing clarity.

Pros: Clear furniture shaking bass on demand. Dual rear ports are perfectly tuned.

Cons: After two months of use haven't discovered any cons.

Are sub woofers worth it?

steve from Kansas City, MO on 6/18/2016

Crutchfield Customer Review (What's this?)

Couldn't justify the additional price when I purchased my surround sound receiver. A month later the JBL Arena was on sale, and I decided "What the Heck" and purchased it. What a difference! in an instant, I was transported from my living room to a theater.

Pros: Lets you feel the sound not just hear it.

Cons: You will might have to trouble shoot for "Nick Nacks" that tend to rattle.


Hands-on research

Features and Specs

Enclosure Bass Reflex
Video Shielded No
Woofer Size (inches) 10
Woofer Composition Polycellulose
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) 100
Frequency Response 41-150 Hz
Height (inches) 14-1/4
Width (inches) 14-1/2
Depth (inches) 17-7/8
Weight 24 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty 1 Year
Amplifier Labor Warranty 1 Year

Product Research


10" Woofer: The JBL Arena Sub 100P features a front-firing 10" high-output polycellulose woofer with rubber surround for powerful low-frequency performance that makes your movie & music soundtracks come alive. 

100 Watt Amp: The 10" woofer is powered by a built-in 100-watt (200-watt dynamic) Class-D amplifier for dynamic and accurate bass performance.

Bass Reflex Cabinet: The 10" woofer is housed in a bass reflex cabinet with dual rear-firing ports which optimize airflow, while minimizing port turbulence and audible distortion in the bass response. The contemporary-styled cabinet features angled side panels and top panels for a sophisticated, modern look. The side panels feature a black wood-grain laminate, while the top panel features a black textured vinyl finish.

Detachable Grille: The included grills is detachable and feature black cloth with silver plastic trim.

Controls: The JBL Arena Sub 100P offers Volume, Crossover, and Phase controls to fine-tune the powered subwoofer to your speaker system and room.

  • Volume: Use this control to adjust the powered subwoofer's volume in relation to the volume level of the rest of your speaker system. Once you have balanced the subwoofer's volume with that of the other speakers in your system, you shouldn't have to change the volume control setting.
  • Crossover: The variable Crossover adjusts the subwoofer's built-in low-pass filter crossover between 50Hz and 150Hz. The higher you set the variable Crossover, the higher in frequency the subwoofer will operate and the more its bass will "overlap" that of the speakers. This adjustment helps achieve a smooth transition of bass frequencies between the subwoofer and the speakers for a variety of different rooms and subwoofer locations
  • Phase: The Phase switch (Normal or Reverse) determines whether the woofer's piston-like action moves in-and-out in phase with the main speakers. If the subwoofer were to play out of phase with the main speakers, the sound waves from the main 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 the listening position and to each other in the room.

LFE/RCA Input: The JBL Arena Sub 100P is fitted with a mono-RCA/LFE input for connecting your home theater or stereo receiver. If your receiver is equipped with a dedicated LFE output, make sure to turn the powered sub's variable crossover fully clockwise to bypass the subwoofer's internal crossover in order to use your receiver's built-in crossover; you will need a mono-subwoofer cable (sold separately). If your receiver is not equipped with dedicated LFE output, but does offer a stereo pre-out, you will need a RCA Y-adapter in addition to a mono-subwoofer cable (both sold separately); in this case you will use the powered sub's built-in variable crossover, which can be set between 50Hz and 150Hz.

Power Modes: In "Auto" mode, the powered sub will automatically turn on when an audio signal is detected and will return to the standby mode when no audio signal is detected after approximately 10 minutes. Setting the Power switch to "On" keeps the subwoofer powered until the Power switch is turned "Off". The subwoofer's LED will glow blue when the subwoofer is on and will glow red when the subwoofer is in standby.

Rubber or Spike Feet: The JBL powered subwoofer features four integrated rubber feet for use on hardwood, tile, and laminate flooring. Four spike feet are also included for rug and carpet flooring. The spikes screw into the bottom of the rubber feet and add approximately 0.25" to the overall height of the subwoofer. The rubber feet are not removable.

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 subwoofer next to a wall generally will increase the amount of bass in the room; placing it in a corner generally will maximize 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.

  • In many rooms, placing the subwoofer along the same plane as the left and right speakers can produce the best integration between the sound of the subwoofer and that of the left and right speakers. In some rooms, the best performance could even result from placing the subwoofer behind the listening position.

  • It is strongly recommend that you experiment with placement before choosing a final location for your subwoofer. One way you can determine the best location for the subwoofer is by temporarily placing it in the listening position and playing music with strong bass content.

JBL Arena Series: The Arena Sub 100P powered subwoofer is part of JBL's Arena series of loudspeakers, which includes floorstanding speakers, bookshelf speakers, a center-channel speaker, a powered sub, as well as in-wall and in-ceiling speakers.

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 verify what’s in the box, 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.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Brand reputation, power, price and input option [ Mario  May 26, 2018 ]
PRICE ON SALE [ RACHEL  Apr 05, 2018 ]
I have a pair of jbl synchros which have excellent bass and Ive been a fan of the jbl brand for 25 years [ Matt  Dec 27, 2017 ]
Love jbl [ Kelly  Dec 18, 2017 ]
same as before [ david  Nov 11, 2017 ]
20 year JBL customer. They earned my loyalty through quality products. [ Robert  May 20, 2017 ]
Love JBL loudspeakers! This is an upgrade for my theater system, replacing the "out of the box theater system" subwoofer that sucks while running thru my new Onkyo theater receiver,. Been a Crutchfield customer for years. Love your company. [ Steve  May 02, 2017 ]
This is a great sub woofer for the price. [ Gaylyn  Apr 08, 2017 ]
JBL brand's reputation. [ Manuel Sanchez  Feb 22, 2017 ]
Initially picked Polk Audio PSW 108. After sending room dimensions to Advisor Wolf he suggested something with a little more power. Decided to stay with JBL. [ Todd  Feb 14, 2017 ]
Need, price and past experience with this brand [ MICHAEL  Feb 05, 2017 ]