Polk Audio 5jr (1988)
The Polk Audio 5jr is a compact two-way bookshelf loudspeaker from 1988. Documentation is thin, but the sources that exist agree on the basics. It was rated for 100 watts, presented a 6-ohm load, and covered 49 Hz to 28 kHz. It measured roughly 345 mm high by 210 mm wide by 195 mm deep, which makes it a small monitor.
The driver lineup is two-way: a 1" tweeter over the woofer, with the crossover handled internally. One quirk: some listings give the weight as 44 lbs. That conflicts sharply with the stated dimensions for a bookshelf speaker this size. The figure may refer to a pair in shipping cartons, or it may be an error copied from database to database. The dimension-derived weight estimate is the better one to trust.
The few owner accounts that surface are positive. One forum post called the 5jr "very good" with mids that are "really good." That fits Polk's house sound of the era, which leaned toward a lively, forward midrange.
HiFI-Stereo (June 1991, p.92) listed the 5JR+SII among products dealers were told to "call for" pricing on — an indicator that the model lingered in retail channels into the early 1990s, though the archive's copy of that listing is fragmentary.
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