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JBL LSR310S 10-inch Powered Studio Subwoofer Certified Open Box , $422.10 each - Add to Cart Skip to Product Information

JBL LSR310S 10-inch Powered Studio Subwoofer Certified Open Box

200W, 10" Down-firing Subwoofer with Balanced XLR Inputs and Outputs, TRS Input, Selectable Crossover, XLF Extended Low Frequency Setting, and Level Control
Item ID: LSR310Sd2
JBL LSR310S 10-inch Powered Studio Subwoofer

Certified Open Box Savings!

Save $46.90 What is Certified Open Box?

The price below reflects your savings.

Savings: $46.90 New for $469.00
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JBL LSR310S 10-inch Powered Studio Subwoofer Certified Open Box

Certified Open Box Savings!

Save $46.90 What is Certified Open Box?

The price below reflects your savings.

Savings: $46.90 New for $469.00

The Perfect Subwoofer for Your LSR Monitors!

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Our Product Research Team

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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

What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.