JBL L20T (1985-1987)
A 2-way, 2-driver bookshelf speaker system from the mid-1980s.
Overview
The JBL L20T is a compact bookshelf speaker. JBL built it between 1985 and 1987. It is a 2-way, 2-driver system.
Forum discussion says the L20T is the consumer version of the 4406 studio monitor. Listings call it "monitors" or "speakers." One contributor noted that it "kick[s] major butt!"
Specifications
| Sensitivity | 87dB (2.83V input, 1m) |
| Power Capacity | 100W (continuous program) |
| High Frequency Driver | O35Ti 25mm (1″) Titanium Dome |
| Low Frequency Driver | 115H-1 165mm (6.5″) Polypropylene Cone |
| Crossover Frequencies | 3,000 Hz |
| Dimensions (WHD) | 9.38 x 14.75 x 8.25 inch / 238 x 375 x 210 mm |
Design
The crossover frequency is 3,000 Hz. The low-frequency driver is a 6.5″ Polypropylene Cone. The high-frequency driver is a 1″ Titanium Dome.
Context
Reviewers found the sound "Thin and relatively cold sounding" with "Good attack for the size." Another blog post mentioned that refurbished L20T units were paired with a T-amp to great effect.
Market
Vintage listings have asked anywhere from $125.00 to $250 ONO. One Reddit user asked $150 for a unit. Restoration threads suggest thrift-store finds often need light restoration.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.
Related Models
- JBL 075
- JBL 077
- JBL 120Ti
- JBL 124A
- JBL 124H
- Braun AUDIO-1 (1965)
- Braun AUDIO-250 (1965)
- Magnavox Component Systems (1972)
- Acoustic Research AR (1967-1976)
- Acoustic Research 11