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JBL LSR310S 10-inch Powered Studio Subwoofer

200W, 10" Down-firing Subwoofer with Balanced XLR Inputs and Outputs, TRS Input, Selectable Crossover, XLF Extended Low Frequency Setting, and Level Control
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Item ID: LSR310S
JBL LSR310S 10-inch Powered Studio Subwoofer
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Price:$429 and 00 cents
Instant Savings: $40 and 00 cents. Original price, crossed out: $469 and 00 cents
Special Financing - Ends Aug 2, 2026. $12/month with 36 month financing* 48 month financing available* with $499.00 minimum purchase on one invoice.

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JBL LSR310S 10-inch Powered Studio Subwoofer
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JBL LSR310S 10-inch Powered Studio Subwoofer
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The Perfect Subwoofer for Your LSR Monitors!

Designed as a companion to JBL's LSR active studio monitor series, the LSR310S powered subwoofer takes the low-end load off of your nearfields. A 10" down-firing driver delivers tight and focused bass, so you get truly balanced 3-way sound. Onboard the LSR310S, you'll find a selectable crossover that sports JBL's XLF Extended Low Frequency Setting, giving you plenty of flexibility to get the low-end contour you need. Ask anyone at Sweetwater: adding a subwoofer to your studio, such as the JBL LSR310S, makes is easier to create great-sounding productions. JBL's Slip Stream port ensures that the LSR310S provides tight and focused bass at any volume. A wide selection of inputs and outputs let you integrate this sub into your studio quickly. Hear what you've been missing in your studio with the JBL LSR310S active studio monitor.

Beef up your studio's low-end response

Create the full-range sound you need out of your studio monitors with the JBL LSR310S active subwoofer. The rich and full low end you'll get from the 200-watt Class D power amp and 10" woofer will make it easier than ever to create amazing sounding mixes. When you activate the XLF Extended Low Frequency Setting, you'll get a club-like response that will help you tailor your bass volumes and frequencies to perfection. The JBL LSR310S powered subwoofer delivers deep bass down to 27Hz to round out the sound of your studio.

Ported design means more accuracy at low volume levels

Checking your mix at low volume levels is a great way to check your overall balance, but many speakers will suffer in the bass regions when dealing with low monitoring levels. The JBL LSR310S uses JBL's patented "Slip Stream" low-frequency port for accurate bass response at low playback levels. The double-flared port shape also reduces the turbulence that some ported designs cause, meaning that bass response remains pure when you turn the LSR310S back up.

All the connections you need for your studio

The JBL LSR310S active subwoofer is packed with the professional features such as balanced XLR inputs, balanced 1/4" inputs, selectable crossover settings, and balanced XLR outputs to allow connection of left and right main speakers. A level control allows independent adjustment of the subwoofer output to balance the sound of your studio monitor system.

JBL LSR310S Active Studio Subwoofer Features:

  • Powered Studio Subwoofer designed to provide top-notch low end to modest-sized control rooms
  • Down-firing 10" speaker and Slip Stream port provide tight and focused low end
  • Selectable crossover and volume control lets you tune your system precisely
  • XLF Extended Low Frequency setting lets you get deeper, more resonant bass sound
  • XLR and TRS balanced inputs give you low-noise performance with your studio gear
  • Dual XLR outputs
  • Powered by a highly efficient 200W (RMS) Class D amplifier

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Tech Specs

  • Powered: Yes
  • Speaker Size: 10"
  • Driver Type: High-excursion, down-firing driver
  • Total Power : 200W
  • Crossover Frequency: 80Hz
  • Maximum Peak SPL: 113dB @ 1m
  • Input Types: 2 x XLR, 2 x 1/4"
  • Output Types: 2 x XLR
  • Enclosure Type: Front Ported
  • Enclosure Material: MDF with Black Vinyl Wrap
  • Height: 17.65"
  • Width: 15"
  • Depth: 15.65"
  • Weight: 34.3 lbs.
  • Manufacturer Part Number: LSR310S

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Reviews

Perfect!
Just bought this sub to go a long with my JBL 306 monitors. This thing is a beast! Highly recommended!! A big shout-out to my sales rep Patrick Lantz for the great advice he always provides!
Unbeatable for the price
Pairing these with a stereo pair of the JBL 705P speakers for low end extension with an 80hz crossover. Super clean low end reproduction down to about 28hz. I use a subwoofer 4x the price at my company office vs this one for my home set up and aside from the slight roll off at the super low end these are easily comparable to something far more expensive.

The XLF mode sounds pretty silly but can be good for double checking how things will translate in clubs that bass boost their PAs a bunch.

I attached a before and after of a SoundID measurement of my minimally treated room before and after the subwoofer install and you can see how it really smoothed out the low end and offloads some of that work really nicely from the mains.
Music background: Sound Designer for Video Games
Great sounding speaker when paired with JBL monitors
This sub sounds great with the matching monitors. I get good imaging and they translate well to my cars audio system. Definitely decent for the price point.
Good low volume reference
I wanted to live with the JBL LSR310S 10-inch Powered Studio Subwoofer before I wrote this review. I had a previous version (I can't remember the exact model) but it had a different "feel" than the one I'm now using. It was more boomy and less defined. It was the series that could use the optional microphone setup to tune the speakers to the room. I never liked that tech and I don't think I ever got it to work right. To my ears, the JBL LSR310S is more sharp and defined and much more simpler to setup than my previous gear.
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I like comparing my bass to songs that I love. In operation with my JBL 305P MkII 5-inch Powered Studio Monitors, turning the volume down really helps me balance areas in the entire mix (Highs, Mid and Lows). This is very key for identifying ares of concern. The JBL LSR310S also jams when the volume is needed especially in the CROSSOVER FREQUENCY settings. Changing the XLR (Extended Low Frequency) setting activates a circuit that emulates the bass tuning common in club playback systems. Beware, this setting will shake everything. I really enjoy the JBL LSR310S. I feel that the JBL LSR310S works very well with my JBL 305P MkII 5-inch Powered Studio Monitors and that this setup has greatly helped my mix. I am very satisfied.
Music background: Songsmith.
Best Sub for the price hands down!
JBL LSR310S is such a beast Subwoofer, super accurate and extremely smooth also deep and perfectly separates the Mid-high and Lows from my Kali LP-6's. Listening at low volume is just like listening to it loud. Got mine today I have been missing out for years, don't do the same thing as me, BUY IT. Don't forget to dial down the volume on your monitors if you have them at 0db, lower the volume and dial the bass volume correctly.

P.S: Sweetwater has the best customer service in the industry bar none!
Music background: Producer