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Review Summary
Extend coverage on pre-owned products after the retailer warranty ends and protect photo & video gear from accidental damage with Adorama Protect.
If we can’t fix it, we’ll replace it at no additional cost.
Coverage for pre-owned gear begins after the retailer warranty ends, plus accidental damage protection for photo/video gear that starts on day one.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for International and U.S. territories purchases. Plans on pre-owned items do not cover pre-existing damages.
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37Hz-24khz
112 dB SPL C-Weighted
+23 dBu
203.2mm (8")
25.4mm (1")
56 W Class D
56 W Class D
+2 dB, 0, -2 dB
+2 dB, 0, -2 dB
1 x XLR, 1 x TRS Balanced
100-240 VAC +/- 10% 50/60 Hz
419.1 x 254.0 x 307.34mm / 16.5 x 10.0 x 12.1"
8.57kg (18.9lbs)
The JBL 8" Two-Way Powered Studio Monitor is a bi-amplified reference monitor with a magnetically-shielded 8" low frequency transducer and 1" soft-dome high frequency transducer. The monitor features JBL's Image Control Waveguide technology for accurate audio reproduction. It also features JBL's Slip Stream port design for improved bass response. The LSR308 is equipped with an LF trim switch and an HF trim switch, as well as dual 56W Class D amplifiers for both drivers. To ensure flexible connectivity, JBL included a balanced XLR input and a balanced 1/4" TRS input, both of which feature dented level control. Other features include JBL's LSR (Linear Spatial Reference) speaker design for accurate audio reproduction and a selectable input sensitivity switch that ensures compatibility with a range of signal sources.
Image Control Waveguide
The Image Control Waveguide was developed for JBL's new flagship M2 Master Reference Monitor and with the introduction of the JBL 3 Series, is now included for the first time in an affordable, compact reference monitor. 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.
JBL Transducers
JBL Transducers are legendary for their performance. The 3 Series long-throw woofer and its damped woven composite Neodymium tweeter are designed from the ground up to reproduce the powerful transients and micro dynamics of your mix. These drivers deliver impressive deep bass and smooth high frequency response beyond the range of human hearing.
JBL's Patented Slip Stream low frequency port design
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.
Big Power, Big Sound
Big Power, Big Sound - 3 Series efficient Class D Amplifiers provide abundant power to deliver the output and dynamic headroom needed for the most demanding production styles.
Professional Balanced Inputs
Balanced XLR and 6 mm TRS inputs give you the options you need to connect your 3 Series to any signal source while maintaining professional signal quality.
Selectable Input Sensitivity
The -10 dB/+4 dB sensitivity switch ensures compatibility with a broad range of signal sources, allowing you to connect the 3 Series to high output professional gear without any danger of input overload.
LF Trim and HF Trim "TRIM" switches
LF Trim and HF Trim "TRIM" switches for both the Low and High Frequencies give you excellent control over the 3 Series sound in "your" room. Use these to fine-tune the amount of bass and treble you hear to compensate for room acoustics, program material and your personal taste.
JBL Professional Reliability
JBL Professional Reliability - Prior to becoming a production-ready design, each 3 Series model is subjected to JBL's tough 100 hour power test, in which the speaker is required to play continually at full output for 100 hours without failure. This demanding test ensures your 3 Series speakers will deliver years of reliable performance.
JBL LSR Design - Your Music Needs a Point of Reference
While most manufacturers take only a single on axis measurement of the speaker's performance, this doesn't tell how it will sound in your room. 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. With LSR design, 3 Series Studio Monitors deliver superior accuracy regardless of the size and shape of your room, so your mixes "hit their mark" when heard on any playback system.
Deep Pedigree
The impressive performance of the 3 Series Reference Monitors is the result of JBL's development of its flagship M2 Master Reference Monitor.