Polk LS-70
Little is documented about the Polk LS-70. No verifiable specifications, production dates, or design details have been traced — the fact sheet for this model is empty, and the Archive's record on it is thin.
The period clippings filed under the LS-70 in the research corpus come with an important caveat: the two audio-magazine reviews they contain actually name the larger Polk LS 90, not the LS-70. Audio (February 1994, p.68) noted that the LS 90s were large and costly, while their wood finish and grille were executed well enough to pass as high-quality furniture. A HiFI-Stereo test report (December 1992, p.60) documented a vented enclosure with a 1-inch dome tweeter and a port near the bottom of the baffle; the same report (p.61) praised the speaker's lateral and vertical spatial imaging in strong terms and found its measured response, free of boundary-reflection effects, comparatively flat — varying only ±4 dB from 100 Hz to 20 kHz. Whether any of this carries over to the LS-70 itself is undocumented. Without LS-70-specific sources, the honest move is to leave this page sparse and point interested readers to the LS-90 coverage.
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