Ohm LS-10X
Little is documented about an "Ohm LS-10X," and the brand attribution on this page is not supported by the surviving record. What the period sources show is an LS-10X made by UTC (United Transformer Company) as part of its Linear Standard series of high-fidelity transformers.
The LS-10X was advertised as a shielded input transformer. Audio (June 1956, p.2) lists it as accepting multiple line impedances - 50, 200, 250, 500/600 ohms, and similar - into a 50,000-ohm secondary, with multiple shielding. UTC's advertising put the Linear Standard series at the top of its line. It claimed uniform frequency response, low waveform distortion, thorough shielding, and dependability (High Fidelity, December 1954, p.141). Earlier UTC ads for the series also cited true hum-balancing coil structure and semi-toroidal, multiple-coil windings meant to minimize distributed capacitance and leakage reactance (Audio, July 1951, p.44).
That is all the record holds. No dedicated review, full specification sheet, date of introduction, or price for the LS-10X has surfaced, and nothing connects it to the Ohm brand in the sources this archive uses.
- Type: shielded input transformer (UTC Linear Standard series)
- Primary: multiple line impedances (50, 200, 250, 500/600 ohms, etc.)
- Secondary: 50,000 ohms
- Construction: multiple shielding; hum-balancing coil structure
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