EPI 601
Almost nothing is documented about the EPI 601. It does not show up in any of the surviving EPI literature or dealer materials in the typical collector databases. No period advertisements identifying it by this model number have surfaced yet. The Archive has not been able to confirm the years of production, the original price, or even the basic configuration (bookshelf or floor-standing, two-way or three-way).
What little exists is a single passing mention in Audio (January 1973, p.58). It listed a speaker under the EPI name with three 1-inch cone tweeters, two 8-inch bass drivers, and one 6-inch bass driver. That is an unusual five-driver complement, and it suggests an acoustic-suspension design with a total magnet weight of three pounds per speaker, requiring at least 35 watts of amplifier power. Whether this specification belongs to the model called 601, or to a different EPI model of the same era, is not certain from the surviving record. No other magazine review or catalog entry has been found that confirms the 601 designation.
If you own an EPI 601 or have seen one in person, the Archive would welcome any information - a photograph, a serial number, a manual, or even a memory of what it looked like.
- Possible drivers (from Audio, Jan 1973): 3 × 1" cone tweeters, 2 × 8" woofers, 1 × 6" woofer
- Possible system type: Acoustic suspension
- Possible minimum power: 35 watts
- Possible magnet weight: 3 lbs total per speaker
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