I can't vouch for the WD90, but I had a couple of HS1-C.
Utah stuff tends to get widely reviled, but the Heritage HS1-C was a budget entry into high sensitivity that could sound quite acceptable if you binned all the connectors, resistor, capacitor, L-pad, and wiring, and replaced with fresh.
Utah Trivia:
Utah bought Stephens Trusonic in the late 60's (shortening the name to Trusonic), and for a while continued to produce the older premium drivers in California (in green paint!) alongside Trusonic-badged speakers made in Indiana indistinguishable from the Utah line.
Utah were masters of OEM, and you'll find their cabinets labelled Knight, Layfayette, and dozens of house brands. Raw drivers were provided to Lafayette, Seeburg, Fender, Silvertone, and others.
When Utah finally folded, its Huntington manufacturing facilities were put to use by a former employee as the original Pyle company before it was gobbled up by Harman and eventually sent to brand hell under the current ownership.
Utah is remembered as one of the leading former American purveyors of undistinguished, even crappy, budget speakers, on par with, say, Oaktron. Compare to Eminence, CTS, and Jensen's "Special Design" OEM label, which inhabited the same sphere, but don't cause contemporary audiophiles to scrunch their faces up quite as much.