For Sale: Pair of good quality alnico magnet woofers made in 1972 in the USA, removed from Harvard HPB 5000 three way stereo speakers.
These have inverted textile surrounds. Some minor wear, not bad. The cones are in good shape with no rips, tears, voice coil rub, or holes. They are rated 8 ohm impedance and I got approx. 6.3 ohms each on my meter. The frames are approx. 12.25" in diameter.
CTS also made drivers for Acoustic Research speakers from this era that look pretty much identical so they might be a good less expensive replacement for your ARs.
Additional higher resolution photos are available, contact for more info.
Email me your zip code and city for a shipping estimate- should be between $8.99 and $17.99 if you live in the US (April 2022).