I have find 2 JBL L300 SUMMIT 75 i must wait for pickup in 2 or 3 weeks
if someone has documents, informations on product or transformation, upgrade or link on JBL L300 SUMMIT I'm interested thank you
Find on the net (by Dan):
JBL has made some incredible speakers in their history, and there is no doubt that the Paragon and the Hartsfield are two of their greatest achievements, and few also would argue that the 4345 has the slight edge on the L300 Summit for audiophile sound quality. But for many reasons the JBL L300 Summit is an icon of not just the JBL product line, but the audio industry altogether. It is something akin to the 1957 Chevy in capturing the essence of an era. In the 1950’s and 1960’s, if you dreamed about a car, it likely was an early model Corvette or the 1957 Chevy Bel Air (probably the convertible!). In the 1970’s, if you dreamed about a set of speakers, it was this pair of JBL L300 Summits. The L300 Summit represents an era of historic greatness, when products that were “Made in America” meant that it was the most innovative design, the best quality materials and components, the absolute best construction and attention to detail, and the best performance possible. In 1975 JBL was at its zenith in terms of Quality Control, Engineering and Design Innovation, and these L300 Summits were State of the Art. Impeccably styled, superb cabinet construction, and absolutely phenomenal driver quality created what was then the astronomically priced statement speaker at $3,000 a pair in 1975 – 33 years ago!
These speakers sound fabulous – no other way to describe it. The combination of finesse and delicacy coupled with the amazing muscle of the 15” JBL 136A woofer create a sound that is just indescribable. The combination of the 136A woofer, the LE85 midrange horn and the incredibly delicious 077 crystal slot tweeter were the culmination of more than 20 years of JBL research and design, and to say that they have withstood the test of time and are still relevant today is a huge understatement. The reason that the demand for these premium speakers is so high is that the drivers out-perform almost everything being made today. This speaker will blow you away with its carefully blended combination of graceful and intimate detail and raw, chest pounding power - it is the quintessential 3-way speaker system.
These Summits were built between 1975-1982 which were arguably JBL’s most innovative and prolific period. These were designed by Greg Timbers, who worked at JBL for over 35 years and is one of the worlds most respected speaker designers.
This is an extremely pure and clean design – a 3-way speaker with extremely high-end components include a massive 15" 136A woofer with 4 inch edge wound voice coil and an optimized alnico motor structure for ultra low distortion. The authoritative bass performance of this classic woofer still rivals the best modern designs. The LE85 midrange features a 1.75 diameter edge wound aluminum voice coil and an alnico motor structure. It fires through a cast aluminum exponential horn and wide dispersion lens assembly. The 077 tweeter features a very efficient ring radiator design with an aluminum diaphragm which has been shown to be one of the most effective ways to achieve flat, extended frequency response beyond 20 kHz. The design of the high frequency driver matches the directivity of midrange horn beautifully which leads to a near-perfect transition between them.
The performance specs are readily available from JBL or the JBL Heritage site. Basic info:
Size = 31.5” x 23” x 23.5”
Unpacked Weight = 145 lbs apiece