JBLBudget tier

monitor subsubsold single

JBL

Reviewed May 20, 2026

JBL LSR310S

Name: JBL LSR310S
Brand: JBL
SKU: jbl-lsr310s

Budget tier · $4.0/5 · editorial

Pairing with 5" or smaller near-fields that roll off above 50 Hz

Studio monitor. Built for accurate near-field reference, not live events. For dance floors, see DJ Speakers.

Where to buy See if it fits your studio

Confirm the live price at the retailer · we earn a commission on qualifying purchases

Practical scores

Editorial 1 to 5

Flat response4/5

Bass extension5/5

Detail / reveal3/5

Build4/5

Value5/5

Editorial 1 to 5 ratings for studio use. Flat response and detail favour mixing accuracy; build reflects warranty + repair-network depth across years of studio service.

See the rubric

Spec sheet

Manufacturer-published

Frequency

27 Hz - 113 Hz

Amp

200 W Class D

Driver

sub

Configuration: 10" down-firing driver, slip-stream port
Weight: 15.7 kg / 34.6 lb
Sold as: single
Room: Minimal treatment
Class: monitor sub
Brand: JBL

From manufacturer spec sheets. Real-world performance varies by room and use. See the glossary for any unfamiliar terms.

Best for

Where this monitor shines

Pairing with 5" or smaller near-fields that roll off above 50 Hz
Bass-heavy genres (hip-hop, EDM, modern pop) on a budget
Bedroom and project studios moving past a desk-only monitor pair

Not the right pick if

When to look elsewhere

Tiny untreated rooms where a sub will smear the low end
Mastering reference - 10" drivers extend deep but lack the linearity of premium subs

Pros

What we like

Best-value studio sub from a known brand
Sub-25 Hz extension at the price point
Defeat footswitch input for quick A/B with sub on/off

Cons

Trade-offs

Down-firing port placement needs a stable floor
Crossover only 80 Hz fixed - no continuous adjustment

Common mistakes to avoid

Where buyers of monitor sub monitors go wrong.

Mistake
Adding a sub to a half-treated room
A sub in a corner of an untreated rectangular room creates a 6–10 dB bass node where you sit. Treat corners first; otherwise the sub makes mixes thinner on consumer systems, not fuller.
Mistake
Crossing over too high
Most main monitors handle down to 50 Hz cleanly. Crossing the sub at 80–100 Hz wastes the mains and muddies the kick. 60–70 Hz is closer to right for most pairs.

One more thing every mix engineer owns

Mixing reference headphones

Sennheiser HD 600

The mastering-studio reference, in a pair you can own.

Open-back, neutral midrange, the headphone many mastering engineers use as a sanity check against their main rig. The honest second opinion when your monitors are wrong.

Where to buy

Affiliate link · opens at a retailer

Also considerBeyerdynamic DT 770 Pro 80 · The closed-back tracking standard.

Where to buy

One email a month. No marketing fluff.

We send three speaker picks and three monitor picks once a month — the same editorial calls we make on the site, packaged so you don't have to come back to check.

One email a month · unsubscribe in one click · no list resale

By subscribing you agree to our Privacy Policy.

More monitor sub monitors

Editorial entry last reviewed May 20, 2026

JBL LSR310S

Budget tier · $4.0/5 · editorial

Pairing with 5" or smaller near-fields that roll off above 50 Hz

Studio monitor. Built for accurate near-field reference, not live events. For dance floors, see DJ Speakers.

Confirm the live price at the retailer · we earn a commission on qualifying purchases

Practical scores

Editorial 1 to 5

Flat response4/5

Bass extension5/5

Detail / reveal3/5

Build4/5

Value5/5

Editorial 1 to 5 ratings for studio use. Flat response and detail favour mixing accuracy; build reflects warranty + repair-network depth across years of studio service.

See the rubric

Spec sheet

Manufacturer-published

Frequency

27 Hz - 113 Hz

Amp

200 W Class D

Driver

sub

Configuration: 10" down-firing driver, slip-stream port
Weight: 15.7 kg / 34.6 lb
Sold as: single
Room: Minimal treatment
Class: monitor sub
Brand: JBL

From manufacturer spec sheets. Real-world performance varies by room and use. See the glossary for any unfamiliar terms.

Where buyers of monitor sub monitors go wrong.

Mistake

Adding a sub to a half-treated room

A sub in a corner of an untreated rectangular room creates a 6–10 dB bass node where you sit. Treat corners first; otherwise the sub makes mixes thinner on consumer systems, not fuller.

Mistake

Crossing over too high

Most main monitors handle down to 50 Hz cleanly. Crossing the sub at 80–100 Hz wastes the mains and muddies the kick. 60–70 Hz is closer to right for most pairs.

One email a month. No marketing fluff.

We send three speaker picks and three monitor picks once a month — the same editorial calls we make on the site, packaged so you don't have to come back to check.

One email a month · unsubscribe in one click · no list resale

By subscribing you agree to our Privacy Policy.

JBL LSR310S

Where this monitor shines

When to look elsewhere

What we like

Trade-offs

Where buyers of monitor sub monitors go wrong.

Adding a sub to a half-treated room

Crossing over too high

Sennheiser HD 600

One email a month. No marketing fluff.

S10.4

Sub8

JBL LSR310S

Where this monitor shines

When to look elsewhere

What we like

Trade-offs

Where buyers of monitor sub monitors go wrong.

Adding a sub to a half-treated room

Crossing over too high

Sennheiser HD 600

One email a month. No marketing fluff.

S10.4

Sub8