Pioneer KP-4500
Documentation on the Pioneer KP-4500 is very thin. The archive's research pass on this model came back almost empty, with no manual, brochure, or production dates surviving in the record. What we do have is a single period listing in HiFI-Stereo (1981, p.234), where the KP-4500 appears in the magazine's car tape machine coverage as a $190 in-dash cassette unit. The entry credits it with a display, separate bass and treble controls, LED stereo and tape indicators, and a tone control. Listed test figures include 2.9 W/ch continuous into 4 ohms from 50-15,000 Hz at 5% THD, FM sensitivity of 19.2 dBf for 50 dB quieting, and FM selectivity of 74 dB. That makes it a cassette/tuner combo, not a bare deck. The same entry shows up again at p.244 of the same magazine. The OCR of both pages is rough, so minor readouts like the exact dashboard dimensions carry some uncertainty. The unit measured roughly 2" high by 7½" wide, with the depth cut off in the scan.
Beyond that listing, nothing else is documented. There is no service manual, no user reception and no collector market data. If you have a KP-4500 with paperwork, this page could use your photos and the manual's spec sheet. All that's confirmed is a 1981 Pioneer car stereo that the period press recorded at $190.
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