JBL 4560 (1971–1983)
A front-load horn floor enclosure for high-efficiency speaker systems, released in several variants from 1971 to 1983.
Overview
The JBL 4560 is a front-load horn floor enclosure from JBL, first introduced in 1971. It was built to house high-efficiency drivers in a horn-loaded setup, with the aim of better output and control in the lower midrange and bass. A revised version, the 4560 bka, came out in 1978 with updated compatibility for newer drivers. It was offered in several variants: the 4560 sf in gray finish, the 4560 bk in black, the improved 4560 bka, and the domestic-market 4560 BKS. The enclosures were sold individually and were meant for use with specific JBL drivers, in line with JBL's modular approach to speaker system design at the time.
Specifications
| Manufacturer | JBL |
| Product type | Front load horn type floor enclosure |
| Release year | 1971 for original 4560; 1978 for variant 4560 bka |
| Compatible Speaker (original 4560) | 2205, 2220 |
| Compatible Speaker (4560 bka) | 2225, 2220, E140, E145 |
| Minimum regeneration frequency | 60 Hz (original 4560) |
| Color variants | 4560 sf: gray; 4560 bk: black |
| Original prices (per unit, around specific years) | 4560 sf: ¥114,500 (1973); 4560 bk: ¥94,300 (1973); ¥99,100 (1975, unspecified variant); 4560 bka: ¥99,000 (1978); ¥95,000 (1981); ¥170,000 (1983, made-to-order); 4560 BKS: ¥120,000 (1983) |
Market
The 4560 and its variants saw price changes over more than a decade on the market. The 4560 bka went from ¥99,000 at launch in 1978 to ¥170,000 by 1983, when it was offered as a made-to-order unit. The 4560 BKS, marketed for domestic use, was priced at ¥120,000 around 1983. All of them were sold without drivers, so buyers had to pair them with compatible JBL transducers. That may affect current market value, depending on completeness and condition.
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