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JBL

From studio monitors to living rooms — the sound professionals trust

JBL Driver & Speaker Cross-Reference →
Which drivers are in any JBL speaker, and which speakers used any given driver — looked up both ways.

History

James B. Lansing Sound, Incorporated (JBL) was founded in Los Angeles, California in 1946 by James Bullough Lansing, the brilliant engineer who had previously founded Lansing Manufacturing Company (later part of Altec Lansing). After a dispute with Altec, Lansing started fresh with his own company. Tragically, James B. Lansing took his own life in 1949, leaving the company in the hands of his partner Bill Thomas. Under Thomas's leadership, JBL continued Lansing's legacy of innovation and quality. The 1950s saw JBL establish itself as a major force in professional audio. The company developed the iconic D130 15" full-range driver and the 075 bullet tweeter. JBL components became standards in movie theaters, recording studios, and concert sound systems. The 1960s brought legendary studio monitors including the 4320, 4310, and 4343. These monitors used compression drivers on horns combined with large woofers to deliver accurate, high-output sound. The L100 Century (1970) brought JBL's professional heritage to consumers, becoming the best-selling speaker of the 1970s. The 1970s and 1980s saw JBL expand its consumer lineup with models like the L65 Jubal, L112, L150, and the ultimate L300 Summit. The company also continued to dominate professional audio with cinema and studio monitors. Today, JBL is part of Harman International (a Samsung company) and remains a leader in both professional and consumer audio.

Key Facts

FactDetail
Founded1946, Los Angeles, California
FounderJames B. Lansing
Professional LegacyHollywood studios, concerts, cinemas
Best SellerL100 Century (best-selling 1970s speaker)
Driver InnovationCompression drivers, titanium tweeters
Current StatusPart of Harman International

Legendary Products

JBL L100 Century (1970)

The best-selling speaker of the 1970s. The L100 used a 12" woofer, 5" midrange, and 1" tweeter in a compact sealed enclosure. The distinctive foam grille (available in black, blue, or orange) became an icon of the era.

JBL 4310 / 4311 (1960s-1970s)

Studio monitors that became the reference standard for recording studios worldwide. These monitors used compression drivers on horns for highs, delivering exceptional detail and dynamics.

JBL 4343 (1970s)

A four-way studio monitor that represented the pinnacle of JBL's monitor design. The 4343 used a 15" woofer, 10" lower midrange, compression driver on horn for upper midrange, and ring radiator tweeter.

JBL L300 Summit (1970s)

The ultimate consumer JBL speaker. The L300 used a 15" woofer, 5" midrange with horn, and bullet tweeter in a massive enclosure. It brought true studio-monitor performance to the home.

Sound Signature

JBL speakers have a character that's instantly recognizable: punchy, dynamic, and alive. The combination of large-format woofers and horn-loaded compression drivers creates a presentation with explosive transient response — kick drums hit with real impact, brass instruments have bite and presence, and the overall sound has an energy that pulls you into the music. There's a reason recording engineers mixed on JBL 4310s and 4311s for decades: these speakers tell you exactly what's happening in a recording, with a forwardness in the upper midrange that reveals detail without becoming fatiguing.

The consumer models carry that same DNA in a more living-room-friendly package. The L100 Century has a warmth and fullness that makes rock and jazz feel visceral — the 12" woofer delivers bass that you feel in your chest, not just hear. The L300 Summit takes this further with a 15" woofer and dedicated horn midrange that can fill a large room effortlessly. JBL's high efficiency (typically 90-95+ dB) means these speakers come alive even with modest amplification, and they absolutely sing with vintage tube gear. If you've only heard modern JBL consumer products, the vintage professional and home speakers are a revelation.

Collecting JBL

The L100 Century is the most iconic vintage speaker in America — the orange foam grille alone is a cultural artifact. Clean pairs with intact original grilles fetch $1,500-3,000, though grille condition is the biggest variable (reproductions are available but originals command a premium). The 4311 studio monitors are the enthusiast's choice at $800-1,800 per pair — they're what the pros actually used, and many collectors prefer their more revealing presentation. At the top, the 4343 four-way monitor is a serious statement piece at $3,000-6,000 per pair, and the L300 Summit is equally coveted.

Individual JBL professional drivers are a world unto themselves. The 2231A 15" woofer, 2420 compression driver, and 2405 slot tweeter are actively sought by builders assembling custom systems or restoring vintage monitors. JBL's foam surrounds on woofers from the 1970s and 1980s will eventually deteriorate — this is expected, not a deal-breaker, and quality refoam kits are widely available. When shopping for any vintage JBL, bring your own music and listen at real volume. These speakers were designed to play loud and that's where they truly shine. Check compression driver diaphragms by listening for any crackling or buzzing on vocals — replacements are available but it's better to buy right the first time.

Competitors & Comparisons

JBL vs Altec: Sister companies; similar heritage JBL vs Klipsch: Both efficient horn designs; JBL more studio focus JBL vs EV: Similar pro audio heritage; JBL more refined
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VINTAGE TECHNOLOGY ARCHIVE / 03-16-2026 / FEEDBACK