JBL L45B (1973)

A 2-way bass reflex floor-standing system with interchangeable unit configurations.

Overview

JBL made the L45B as an improved version of the L45. It is a 2-way, 2-speaker floor-type system with a bass reflex enclosure, produced in 1973. The L45B series has 5 unit variations: L45B, L45B-001, L45B-030, L45B-S1, and L45B-S4.

Specifications

Units	Low band 135A, For Middle Range LE5-3, High pass LE25-1
Network	Dedicated
Impedance	8 Ω
Allowable input	75W
Output sound pressure level (new JIS)	93dB
Crossover frequency	1.2kHz, 7.5kHz
External dimensions	Width 750 x Height 550 x Depth 450 mm
Base	60 mm high
Weight	49kg

Design

The enclosure uses a bass reflex system for low-frequency response. The base part is built independently, so the unit can stand vertically or horizontally.

Context

The L45B is a further step in the L45 series. The system changed the unit configuration from the L45B Flair system, and five distinct patterns of unit configuration are available.

Market

The most common problem with these speakers is rotten, torn, or damaged surrounds. A repair kit exists to re-foam the woofer surround. The original price for the L45B was ¥ 248,000 (1 unit, around 1975).