JBL 4560 (1971–1983)
A front-load horn floor enclosure designed for high-efficiency speaker systems, released in multiple variants from 1971 to 1983.
Overview
The JBL 4560 is a front-load horn type floor enclosure developed by JBL, first introduced in 1971. It was designed to house high-efficiency drivers in a horn-loaded configuration, optimizing output and control in the lower midrange and bass frequencies. A revised version, the 4560 bka, was released in 1978 with updated compatibility for newer drivers. The system 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. These enclosures were sold individually and were intended for use with specific JBL drivers, reflecting JBL’s modular approach to speaker system design during this era.
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 JBL 4560 and its variants saw price fluctuations over more than a decade of availability, with the 4560 bka increasing in cost from ¥99,000 at launch in 1978 to ¥170,000 by 1983 when offered as a made-to-order unit. The 4560 BKS, marketed for domestic use, was priced at ¥120,000 around 1983. These enclosures were sold without drivers, requiring users to pair them with compatible JBL transducers, which may affect current market value depending on completeness and condition.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.
Related Models
- JBL 4310 (1970)
- JBL 4315 Control Monitor (1977)
- JBL L110A (1975)
- JBL 4311B (1975)
- JBL 4408 (1975)
- Akai AM-2850 (1975)
- Akai AP-206 (1975)
- Nakamichi BX-1 (1985)
- Acoustic Research research-ar-17 (1978)
- Acoustic Research AR-19 (1994)