JBL L77 Lancer (1963)

The JBL L77 Lancer is a 2-way, 2-speaker bookshelf system from the mid-1960s. It uses a passive radiator, which is how JBL got extended bass out of a compact enclosure. The drivers are well documented: a 25cm LE10A cone woofer, a 25cm PR10 passive radiator (sometimes called a drone cone), and an LE20 cone tweeter. The crossover is the LX4-2, which collectors generally regard highly. All of the original drivers use alnico magnets.

The cabinet is finished in walnut. Unusually for the period, it's finished on all four sides, so the speaker can sit horizontally or vertically. The Japanese market documentation lists dimensions of 360 x 570 x 300 mm (WxHxD) and a 1963 release date, with a price of ¥93,500 per unit around 1967. The woofer surrounds are Lansalloy, an early JBL foam/rubber formulation. They deteriorate and need refoaming, and that is the most common issue with surviving examples. Nearly every used listing mentions it.

One period observation, from a YouTube video rather than a print review, described the L77 as having a "rather broad frequency response, particularly at higher frequencies." No full frequency response spec, impedance, sensitivity, or power handling figures have surfaced in the available documentation.

The L77 is highly collectible, with particularly strong demand in Japan. Yahoo!オークション auction results over a 180-day period ranged from ¥2,800 (for a screw set) to ¥192,500, with an average of about ¥53,000 for 27 sold items. A pair in good working condition typically sells in the ¥70,000-150,000 range. A single US listing on HQaudios was priced at $500 for a near-mint, fully restored pair.

Type: 2-way, 2-speaker, passive radiator, bookshelf
Woofer: 25cm LE10A cone (alnico)
Passive radiator: 25cm PR10
Tweeter: LE20 cone (alnico)
Crossover: LX4-2
Dimensions: 360 x 570 x 300 mm (WxHxD)
Released: 1963 · Price (Japan, ~1967): ¥93,500 per unit