JBL L112 Loudspeaker Speaker Review
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The JBL L112 loudspeaker system was released in 1980 as an improved version of the original L-100 Century/4130 control monitor. JBL speaker engineers reexamined and reworked every single aspect of these already exquisite systems with the benefit of years of valuable feedback attained from recording engineers and other audio professionals. By staying attentive to this input and implementing state-of-the-art circuitry and components JBL successfully built upon their strengths while addressing their weaknesses, thus creating an enormously improved system while remaining faithful to the stringent performance standards of the original versions.
The JBL L-112’s are so well designed and constructed they are virtually sonically identical to the JBL monitors used in top recording studios such as Capitol, RCA, Warner Brothers, Vanguard, Elektra and MGM. Even today, with the enormous selection of speaker systems available, many discerning audiophiles prefer the L-112’s. The reason for this is simple. Statistics show that more than likely 70% of your music collection, whether old or new, have been mixed and mastered with a pair of JBL monitors in the 4300 series. Since the L-112’s are sonically similar to these studio monitors, you are hearing exactly what the sound engineers, musicians, and producers heard in the recording studio when they were doing the final mixdown, and you are hearing it precisely the way it was intended to be heard. Other speaker systems –including the high dollar speakers of today-add color or accentuate a particular frequency range that doesn’t reflect the true intent of the recording.
The JBL L112’s reproduce music with stunning accuracy; voice and instrument are utterly natural. The bass is tight, clean, and thoroughly musical; it dips down to freq ranges other speakers can only dream about. The highs are smooth and sweet with extreme clarity divulging even tiny details at low volumes; music sounds balanced and articulate. Distortion levels are extremely low. Frequency response is incredibly smooth and effortless throughout the entire audio spectrum. As the listener, you have the ability to adjust mid range and high range frequency levels according to personal preference, room acoustics or program material.
In all truth, place the JBL L-112’s next to any speaker system, regardless of price range, and very few can perform on the level these can. Some of the many features of the L112’s include:
"Mirror-Imaged" Driver Configuration The L112 is a "mirror-imaged" loudspeaker; the driver configuration of one channel is a mirror image of the other. This provides an exceptionally good stereo image and sense of acoustic space, adding to the realism of the sound.
Superior Low-Frequency Driver Each cabinet contains a 12 in driver with a powerful 10 ¼ lb magnetic assembly. This precisionly crafted woofer provides deep, powerful bass reproduction. The unique SFG (Symmetrical Field Geometry) design reduces second-harmonic distortion to levels far below those found in drivers using conventional magnetic structures. The cone is coated with a precisely controlled amount of a specially formulated material that provides optimum mass as well as better damping, for smooth performance at the upper end of the driver's range. A 3 in edgewound copper voice coil helps produce the high efficiency and remarkable transient response of the driver.
Superior Mid-Range Driver The 5 in midrange loudspeaker, housed within an isolated subchamber to prevent interaction with the low frequency driver, also delivers undistorted reproduction even at extreme volume levels. Its 7/8 in copper voice coil is large for a loudspeaker of this size, yielding exceptional transient response and efficiency. A very stiff cone reduces the possibility of cone breakup at very high power levels.
Superior High-Frequency Driver Designed specifically for the L112, this exquisite 1 in high frequency dome radiator accurately reproduces the highest harmonics, yet cleanly handles the largest musical peaks with authority. The dome is formed of a lightweight phenolic material, coated with aluminum by means of a vapor deposition process. It has the optimum combination of strength, mass, and rigidity; the copper voice coil drives the full circumference for smooth, low-distortion response across its entire operating range.
Superior Frequency Dividing Network The innovative frequency dividing network gives the L112 superior transient response, so that music retains the full clarity and total impact of the original source. This performance was achieved through the creative application of a principle typically found only in active high frequency electronics, a principle that greatly improves the resolution of complex musical waveforms. Additionally, the sophisticated L112 network controls each driver throughout its operating range, so that the output of the individual drivers is smoothly blended with no perceptible shift from one driver to the next. The network is mounted on a heavy-duty printed circuit board to assure reliability. If you have experience with these loudspeakers please Click here to add your review.
If there are any JBL L-112 Loudspeakers for sale they will be listed here :
![]() JBL L112 Speaker Foam Repair Kit Woofer Refoam Kit US $22.50
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![]() JBL L 112 speakers US $500.00
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![]() JBL L 112 High Frequency Dome Radiators Tweeters 25mm Pair US $52.00
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![]() JBL L 112 Midrange Loudspeakers 130mm pair US $42.58
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![]() JBL L 112 Speaker Grills US $51.00
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![]() JBL L 112 Speaker Cabinets w crossovers One Owner US $107.50
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Here are some other vintage JBL loudspeakers for sale :


US $22.50
















I have a pair of JBL-L112’s for sale. Purchased them in Saudi Arabia when in the Air Force in 1982. The woofers have been reconed because they were in storage for three years when I went back overseas. They still BUMP on 400 watts continuous power!! Just remodeled the house and the wife says they have to go. How do I put them on your website for sale?
Thanks,
Glenn “Jetman” Bunn
jetman1@frontiernet.net
THERE WILL BE NO OTHER SPEAKER IN THE WORLD TO BEAT A PAIR OF JBL L-112’s!!!!
Hello, would you kindly post my sale of JBL L112s to your site?
The Item # is 150695282449
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