JBL L100 Century vs 4311

One or both models trade too thinly for a reliable current comparison; see each model page for the latest data. Below: specs, values, price history for both, and which one to buy.

Side by side

JBL L100 CenturyJBL 4311
Years produced1970–19781974–1980
Original MSRP$546$600
MSRP in today’s dollars~$4,450~$3,800
Working value today$2,375/pair—
Parts / not working$69.99/pair—

Values are trimmed medians of current eBay asking prices, updated daily. Full data on each model page: JBL L100 Century · JBL 4311.

Price history, head to head

$675$1,590$2,500 2026-08-08 2026-10-06 $2,375 $1,500 JBL L100 Century · 2026-08-08 · $1,650JBL L100 Century · 2026-08-24 · $1,850JBL L100 Century · 2026-08-26 · $1,850JBL L100 Century · 2026-08-28 · $1,850JBL L100 Century · 2026-08-29 · $1,850JBL L100 Century · 2026-08-30 · $1,900JBL L100 Century · 2026-08-31 · $1,900JBL L100 Century · 2026-09-01 · $1,900JBL L100 Century · 2026-09-02 · $1,900JBL L100 Century · 2026-09-03 · $1,850JBL L100 Century · 2026-09-04 · $1,800JBL L100 Century · 2026-09-05 · $1,850JBL L100 Century · 2026-09-06 · $1,850JBL L100 Century · 2026-09-07 · $1,850JBL L100 Century · 2026-09-08 · $1,850JBL L100 Century · 2026-09-09 · $1,850JBL L100 Century · 2026-09-10 · $1,900JBL L100 Century · 2026-09-11 · $1,900JBL L100 Century · 2026-09-12 · $1,850JBL L100 Century · 2026-09-13 · $1,800JBL L100 Century · 2026-09-14 · $1,698JBL L100 Century · 2026-09-15 · $1,595JBL L100 Century · 2026-09-16 · $1,595JBL L100 Century · 2026-09-17 · $1,800JBL L100 Century · 2026-09-18 · $1,600JBL L100 Century · 2026-09-19 · $1,675JBL L100 Century · 2026-09-20 · $1,800JBL L100 Century · 2026-09-21 · $1,675JBL L100 Century · 2026-09-22 · $2,025JBL L100 Century · 2026-09-23 · $2,150JBL L100 Century · 2026-09-24 · $2,250JBL L100 Century · 2026-09-25 · $2,375JBL L100 Century · 2026-09-26 · $2,375JBL L100 Century · 2026-09-27 · $2,375JBL L100 Century · 2026-09-28 · $2,375JBL L100 Century · 2026-09-29 · $2,375JBL L100 Century · 2026-09-30 · $2,375JBL L100 Century · 2026-10-01 · $2,250JBL L100 Century · 2026-10-02 · $2,375JBL L100 Century · 2026-10-03 · $2,375JBL L100 Century · 2026-10-04 · $2,375JBL L100 Century · 2026-10-05 · $2,375JBL L100 Century · 2026-10-06 · $2,375JBL 4311 · 2026-08-08 · $1,500JBL 4311 · 2026-08-24 · $1,850JBL 4311 · 2026-08-26 · $1,850JBL 4311 · 2026-08-28 · $1,850JBL 4311 · 2026-08-30 · $1,850JBL 4311 · 2026-09-01 · $1,850JBL 4311 · 2026-09-03 · $1,850JBL 4311 · 2026-09-05 · $1,850JBL 4311 · 2026-09-07 · $1,850JBL 4311 · 2026-09-09 · $1,100JBL 4311 · 2026-09-11 · $1,500JBL 4311 · 2026-09-13 · $1,500JBL 4311 · 2026-09-15 · $1,500JBL 4311 · 2026-09-17 · $1,194JBL 4311 · 2026-09-19 · $888.24JBL 4311 · 2026-09-21 · $888JBL 4311 · 2026-09-23 · $823JBL 4311 · 2026-09-25 · $823JBL 4311 · 2026-09-27 · $823JBL 4311 · 2026-09-29 · $801.64JBL 4311 · 2026-10-01 · $1,500JBL 4311 · 2026-10-03 · $1,500JBL 4311 · 2026-10-05 · $1,500

Daily asking medians; days without a fresh sync are not plotted.

Which one should you buy?

Same bones, different clothes. The 4311 is the studio version: utility cabinet, front controls, and usually the lower price because it skips the walnut-and-grille glamour. The L100 is the consumer legend, and its value rides heavily on cosmetics, original Quadrex grilles above all. Buyers who want the sound with the smallest outlay should hunt a clean 4311. Buyers who want the icon, and the appreciation that has come with it, want an original L100 pair with the grilles that make it one.

Shop both

JBL L100 Century on eBay → JBL 4311 on eBay →