2-way powered studio monitor with 8" woofer and 1" tweeter
Our take on the JBL LSR308 by Crutchfield's Eric Angevine
History meets innovation
JBL approached the design of the LSR308 with new ears, but they built the monitors on solid, proven technology. Each speaker matches an 8" long-throw woofer with a 1" damped woven composite Neodymium tweeter to reproduce powerful transients and microdynamics in your mix. JBL's LSR Linear Spatial Reference design criteria requires seventy-two measurements yielding more than 1,200 times more data, enabling JBL to engineer a speaker that ‘sounds right' in any working space. The patented Slip Stream™ bass port uses a double-flared shape for greater low-frequency extension and less internal turbulence. That's crucial when you need to hear accurate low tones from the 8" woofer.
JBL's 8" 2-way LSR308 powered monitor provides big-time sound in a compact design.
Built to deliver accurate sound — and to last
Separate 56-watt Class D amplifiers drive the woofer and tweeter, so highs, mids and lows are delivered with dynamic accuracy for even the most demanding production styles. Durable balanced XLR and 1/4" TRS connectors ensure that pure, high-quality signal flows from the source to your ears. Just using quality materials and sturdy craftsmanship isn't enough for the engineers at JBL. Before each speaker leaves the factory it must pass a torture test: playing at full output for 100 hours without failure. And each is backed by a five-year warranty. Rest assured: your LSR308 monitors will deliver years of reliable, responsive performance.
A high-tech pedigree
JBL has been building speakers for over 65 years, and they continue to push boundaries in pursuit of great sound. Their Linear Spatial Reference (LSR) design process measures output in a field 360 degrees around the speaker and engineers the entire system to ensure accurate off-axis response. They also adapted the Image Control Waveguide from JBL's flagship M2 Master Reference Monitor to the compact design of the LSR308. That means you're getting the best mix, and the truest sound possible, no matter where you're sitting.
You're in charge of what you hear
In your studio, you're the boss. The LSR308 allows you to fine-tune the sound to fit your room's acoustics and your personal preferences. Boost or cut frequency response as needed with separate three-position low- and high-frequency trim switches. A -10 dB/+4 dB sensitivity switch ensures compatibility with a broad range of signal sources, allowing you to connect high output professional gear without any danger of input overload.
It's your mix. JBL has gone to great lengths to make sure you hear what you need to hear when you're sitting in the sweet spot.
- separate 56-watt Class D amps power woofer and tweeter in bi-amped design (112 watts total)
- frequency response: 37-24,000 Hz
- peak SPL: 112 dB
- 8" long-throw woofer in bass reflex enclosure
- 1" soft dome damped woven composite Neodymium tweeter
- -10 dB/+4 dB sensitivity switch ensures compatibility with a broad range of signal sources
- low frequency trim switch (+2 dB, 0, -2 dB)
- high frequency trim switch (+2 dB, 0, -2 dB)
- balanced XLR and 1/4" TRS inputs
- JBL's patented Slip Stream™ low frequency port design
- 10"W x 16-1/2"H x 12"D
- weight: 22 lbs.
- warranty: 5 years parts and labor
- Our 60-day money-back guarantee
What's in the Box:
- Powered studio monitor speaker
- AC power cord
- Owner's Manual
These speakers sound incredible. I am using them in a surround system, they are the front left and right and center. The rears are lsr305' which are astounding as well. These are replacing some older JBL monitors. I am driving them with a Marantz peamp /processor in balanced mode.
John, Pittsford, NY
JBL LSR308 Reviews
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Features and Specs
|Woofer Size (inches)||8|
|Tweeter Size (inches)||1|
|Midrange Size (inches)||0|
|Full range Driver size||0|
|Enclosure type||Bass Reflex|
|Built in amplifier||Y|
|RMS Power rating||112|
|Peak Power rating||Not given|
|Inputs||XLR, 1/4" TRS|
|Parts warranty||5 Years|
|Labor warranty||5 Years|
|Maximum Peak SPL||112|
Two-Way Design: The JBL LSR305 powered studio monitor employs a two-way driver design with an 8" long-throw woofer and a 1" soft-dome Neodymium tweeter. These drivers deliver impressive deep bass and smooth high frequency response beyond the range of human hearing.
Image Control Waveguide: The studio monitor's 1" soft-dome tweeter is coupled to JBL's Image Control Wave Guide. The patent-pending design of the Image Control Waveguide precisely controls the sound emanating from the speaker in the vertical and horizontal planes ensuring the presentation at the listening position is neutral and accurate.
Slip Stream Port Design: The LSR305 features a bass reflex enclosure with a unique rear-firing port. JBL's Patented Slip Stream low frequency port design works in concert with the woofer to produce deep bass response at all playback levels. The double-flared shape of the port is precisely engineered for greater low-frequency extension and reduced turbulence.
Class D Amplification: Two efficient 56W Class D Amplifiers (one for the lows, the other for the highs) provide abundant power to deliver the output and dynamic headroom needed for the most demanding production styles.
Balanced Inputs: Balanced XLR and 1/4" TRS inputs give you the options you need to connect the powered studio monitor to any signal source while maintaining professional signal quality.
Select Input Sensitivity: The -10 dB/+4 dB sensitivity switch ensures compatibility with a broad range of signal sources, allowing you to connect the LSR305 to high output professional gear without any danger of input overload.
LF (Low Frequency)/HF (High Frequency) Trim: Trim switches for both the Low and High Frequencies give you excellent control over the studio monitor speaker's sound in your type of application and room environment. Use these switches fine-tune the amount of bass and treble you hear to compensate for room acoustics, program material, and your personal taste.
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Why did you buy this?
Best combination of size/weight and performance for a high quality portable music recording studio. [ David Aug 30, 2017 ]
Needed a pair of Studio Monitors. [ E Soren Oct 06, 2016 ]
My friend is an audio engineer. Listening to the nearfield monitors at his work nearly caused a brain-explosion. Everything was *SO* articulate and clean, the stereo image and soundstage was amazing. I told him I wished my home computer setup sounded half as good. He told me to just go get some studio monitors. The speakers are self-amplified, and a good USB DAC with TRS/XLR outputs can be had fairly cheaply. SO I DID! I demo'd these at a local pro-audio shop first. (YOU SHOULD TOO!) [ Brent Jun 01, 2016 ]
1 question already asked
I can't say absolutely not because I haven't tried connecting them to a home stereo receiver. The 308s are Powered speakers, they each have their own amplifier. Think of them as a kind of guitar amplifier, they each have a TRS 1/4" audio input jack (and XLR connector) for an audio source from a mixing console or preamp. They do not have bare-wire connectors like home stereo speakers and stereo receivers like your Sony have. I don't believe an audio cable exists with a 1/4" male jack on one end bare wires on the other, but that is what you'd need to connect the Sony to the JBLs. [ James Apr 06, 2017 ]
You don't need powered monitors with a receiver [ Stephen Apr 05, 2017 ]