Vintage

Goodmans rated this 584mm-wide receiver at 2x40W/8ohm and 2x50W/4ohm but the One Ten is actually a little more load-tolerant than this might suggest, delivering closer to 2x63W/4ohm and possessing sufficient headroom to accommodate 83W/4ohm under dynamic conditions. This falls to 51W and 27W into 2 and 1ohm, respectively, or 5.2A current at <1% THD – figures that are still above average for the era [see Graph 1]. The One ten also benefits from a uniform <0.05ohm output impedance and a response (–2dB/20Hz to –1dB/20kHz) that holds true into 8ohm down to 1ohm loads. The various filters are less subtle in impact with 'rumble', for example, accurately rated at –3dB/45Hz and –36dB/10Hz, and proving more than sufficient to quell the 'loosest' of reflex-loaded speakers when fed the most vigorous of arm/cartridge resonances! However, the –3dB/6kHz and –36dB/9kHz specification for its 'scratch' filter is wide of the mark – in practice it attenuates HF to the tune of –3dB/8kHz and –36dB/38kHz – just as the volume-dependent loudness 'contour' offers a gentler +4dB/50Hz and +1.8dB/15kHz at 1W/8ohm.

Distortion increases gradually with output from 0.009/1W to 0.02%/10W, 0.03%/30W and 0.3% at the rated 40W/8ohm, this very closely mirroring Gordon J. King's test results in our original review [HFN Mar '72]. At the time, Goodmans specified 'less than 0.1% at any power up to the quoted maximum'. Versus frequency, distortion is impressively uniform, holding to 0.01-0.03% at 1W and 0.02-0.06% at 10W from 20Hz-20kHz [see Graph 2, below] although the A-wtd S/N ratio is a little below par at 75dB (re. 0dBW). Of course, allowances should always be made for a tuner/amplifier that's past its half-century! PM