JBL 4307 (1986)
The JBL 4307 is a compact two-way bookshelf monitor from JBL's professional-influenced 4300 series. It was introduced in 1986 as one of the smaller members of that line and succeeded the earlier 4301B. JBL aimed it at home use. It was a smaller sibling to the studio monitors the company was known for, sized for bookshelves and small-to-medium rooms. The sources agree closely on the essentials: a 5-inch doped paper cone woofer and a 1-inch titanium dome tweeter, crossed over at 3 kHz, in a front-ported bass reflex enclosure. Sensitivity is rated at 87 dB (1W/1m), impedance is 8 ohms, and maximum power handling is 100 watts. Frequency response is stated as 50 Hz to 20 kHz (±3 dB). It weighs about 15 lbs and measures roughly 14" H x 10.25" W x 10" D, depending on the source.
What little period press exists is incidental rather than a formal review. Mix magazine (July 1983, p.39) listed JBL 4311s in a studio's monitor chain alongside Westlake and ADS models, and the 4307 itself doesn't appear to have received dedicated coverage in the major hi-fi titles of the day. Studio Sound (August 1997, p.52) discusses multichannel surround monitoring and the conflicting requirements of matrixed and discrete surround channels. The documentation that survives is mostly dealer and catalog material. Audio Heritage notes the 4307 "can do great things with a 30 watt amp." Like other 4300 series monitors, it was voiced for accurate reproduction with a dynamic, clear presentation, and the titanium dome tweeter was the standout feature for high-frequency detail. Original MSRP was $480.00 each.
The record is thin on a few fronts: no production numbers, no documented common failures or parts availability, and no owner impressions beyond marketing descriptions. The dimension discrepancy between sources is minor, fractions of an inch.
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