JBL 2231A
Little is documented about the JBL 2231A. The model number shows up in period professional audio surveys, but surviving information on this specific transducer is thin. The details are not confirmed in available sources.
Beyond its listing in period equipment directories, almost nothing is recorded about the 2231A. No specifications, production years or original pricing have survived in the documentation we have been able to locate. The 1977 Studio Sound loudspeaker survey (May 1977, p.52) lists a JBL model with a 38 cm diameter driver and 8 ohm impedance, but the entry is fragmentary and cannot be reliably tied to the 2231A designation. The survey documents a 38 cm diameter driver and 8 ohm impedance for a JBL transducer (Studio Sound, May 1977, p.52). A later Studio Sound monitor survey (September 1978, p.60) references JBL professional products with a frequency response of 50Hz to 25kHz and an SPL of 107dB at 1m, without detailing the 2231A specifically. The same September 1978 survey (p.60) also references JBL professional products without detailing the 2231A.
If you own a 2231A or have original literature, the Archive would welcome the details. Until then, this page is a placeholder.
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