While most manufacturers take only a single on-axis measurement of the speaker's performance, this very rarely tells the true story of how it will sound in your room. JBL's LSR (Linear Spatial Reference) design criteria requires 72 (seventy-two) measurements yielding more than 1,200 times more data than single-axis measurement, enabling JBL to engineer a speaker that "just sounds right" in virtually any working space. With LSR design, 3 Series Studio Monitors deliver astonishing accuracy regardless of the size and shape of your room, so your mixes really hit their mark when heard on a variety of playback systems.
The Image Control Waveguide is a significant factor in the all-around crystal clarity of the LSR308. It was initially developed for JBL's new flagship M2 Master Reference Monitor, and with the introduction of the JBL 3 Series, it 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 are legendary for their performance. The 3 Series is no exception: the shielded 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 deep, satisfying bass and smooth high frequency response beyond the range of human hearing.
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.
The 3 Series super-efficient Class D amplifiers provide abundant power to deliver the output and dynamic headroom needed for the most demanding production styles, and balanced XLR and 1/4" TRS inputs give you the options you need to connect your 3 Series to any signal source, while maintaining professional signal quality. 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 and HF "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.
Prior to becoming a production-ready design, each 3 Series model is subjected to JBL's grueling 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 LSR308 will deliver years of reliable performance.
Specifications: • Frequency response: 37 Hz - 24 kHz • Output: 112 dB SPL (C-weighted, peak) • Amplification: 56 watts LF; 56 watts HF • Inputs: XLR, 1/4" balanced • Weight: 18.9 lbs. • Dimensions: 16.5" x 10" x 12.1".