EPI LS-70
Documentation on the EPI LS-70 is thin. What survives comes almost entirely from period advertising, which presents it as a car speaker modeled after the company's home EPI 70. HI-Fi-Stereo-Buyers (September 1978, p.27) and HiFI-Stereo (August 1978, p.65) both ran full-page ads calling the LS-70 a speaker that "sounds like a home speaker" and can handle over 60 watts per channel. That claim was likely aimed at the aftermarket car-audio crowd. The same ads list a frequency response of 70-20 kHz, a crossover at 1800 Hz, and what they call "nearly hemispherical" dispersion in the musical range.
Past the marketing, hard specifications are scarce and they don't agree. One source, possibly from a High-Fidelity component listing, gives dimensions of 7¼″ H × 5″ W × 3″ D, a 5¼″ woofer and 2″ tweeter in a 3-way configuration, 4-ohm impedance, and a continuous power rating of 30 watts. Another reference suggests a larger 6″ × 9″ × 4″ footprint with a response down to 40 Hz. It is unclear whether these describe separate production runs or are simply errors in period cataloging. The tweeter is consistently identified across advertisements as a 1″ "air spring" type.
The LS-70 was a car speaker built to bring EPI's home-speaker reputation into the dashboard. The record is too fragmentary to confirm production years or total sales volume.
- Type: Car speaker (advertised as 3-way)
- Woofer: 5¼″ (one source); 6″ long-travel (ad copy)
- Tweeter: 1″ air spring
- Crossover: 1800 Hz
- Impedance: 4 ohms
- Power handling: 30 watts continuous (one source); "over 60 watts" (ad copy)
- Claimed response: 70–20 kHz (ad copy); 40 Hz–30 kHz (alternate listing)
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