Scott LK-150 (c. 1961–1963)
Little is documented about the Scott LK-150 in the archive's records. No original price, production figures or service manual have surfaced. The period press does show that it was Scott's high-powered stereo basic amplifier kit. The buyer built the power amplifier himself, and no preamp or control section came in the box.
High Fidelity (September 1963, p.70) tested a kit-built example and found it a reliable performer, capable of 60 clean watts per channel. With input sensitivity set to 2.5 volts and the subsonic roll-off in the LAB position, output measured 49 watts per channel. Earlier, HiFi/Stereo Review (May 1962, p.50) included the LK-150 in its laboratory report on do-it-yourself power amplifiers, alongside the Lafayette LK-550 and the Realistic 210. That puts it in the early-1960s kit boom.
The same HiFi/Stereo Review coverage (May 1962, p.54) describes one design detail. Each input had a switch that rolled off response below 20 cycles. This was the recommended operating mode, meant to keep subsonic transients from damaging speakers. A separate position defeated the filter for laboratory work. Scott's own advertising of mid-1961 was already promoting "new kits," including a "massive 130 watt power amplifier" (HiFi/Stereo Review, June 1961, p.17). It may be this model, though the ad's surviving text doesn't name it outright.
Known facts at a glance:
- Stereo basic amplifier kit (power amp section only)
- 60 clean watts per channel in a bench-tested kit-built sample
- 49 W/ch at 2.5 V sensitivity with the LAB roll-off position
- Switchable subsonic filter (below 20 cps) on each input, with lab bypass
- Reviewed 1962–1963; advertised by Scott from mid-1961
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