Sennheiser 40-NEW
Little is documented about the Sennheiser 40-NEW, and even the model designation is hard to pin down in surviving period material. What the record shows comes mainly from a single spec listing in High Fidelity (1981, p.284). It describes a headphone with 250-ohm impedance, 96 dB SPL sensitivity with a 1 mW input at 1 kHz, and Mylar diaphragms. The design was semi-open - the listing calls it "partial environment isolation" - and maximum input was rated at 200 mW. Weight was given as 9 oz with cords (10 oz net), and the price at $65.
Beyond that listing, almost nothing else has surfaced. There are no production years, no further contemporary reviews, and no circuit or driver details. For a Sennheiser model of this era, the 40-NEW appears to have been a straightforward, mid-priced dynamic headphone, but the archive's record on this one is thin.
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