Real Time 9860A (c. 1972–1973)
Little is documented about the Real Time 9860A. What survives comes from a trade advertisement Real Time ran in the early 1970s under the banner "New Tools for Professional Monitoring" — the same spread that presented the 8050A Real Time Analyzer and the 771B Biampilifier. A Real Time ad in DB Magazine (November 1972, p.13) described the 9860A as an active equalizer whose phase and amplitude transfer characteristics were identical to the Altec passive equalizer, permitting detailed equalization from 40 Hz to 12.5 kHz. The ad also credited it with high- and low-pass functions, though the surviving copy cuts off before the full details. The same ad block appeared in DB Magazine issues from May 1972 through February 1973, so that window marks its known commercial presence.
Known from period ads:
- Active equalizer
- 40 Hz–12.5 kHz equalization range
- Phase/amplitude transfer matching the Altec passive equalizer
- High- and low-pass functions (details cut off in the surviving record)
Beyond those trade ads, no specifications, pricing, or production history are currently documented.
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