Sumiko Oriole MC cartridge Lab Report

While the Oriole is pitched as a lower output, lower cost sibling to the flagship Starling MC [HFN Mar ’20] – it has an alloy pipe cantilever instead of the latter’s boron rod – both share hallmark qualities in their extended response, superb tracking prowess and distortion profiles. The Oriole certainly has fewer coil turns and a reduced 5.5ohm coil impedance versus 28ohm for the Starling – hence the lower 282μV vs. 580µV output, respectively, (re. 1kHz/5cm/sec). Also, while the Oriole has a slightly ‘looser’ 0.4dB channel balance it does offer a superior 28dB separation through bass and midrange that holds to a full 25dB at 20kHz.

Once again, VTA looks closer to 26° than the claimed 20° while the 10-11cu suspension compliance, combined with the modest 7.3g bodyweight, renders it very compatible with a wide range of medium mass tonearms. Contradicting this relatively low (stiff) compliance, the Oriole remains a very secure tracker at its recommended 2.0g downforce, achieving ~80μm via the left/right channels, respectively, and keeping hold of the highest +18dB groove modulation (re. 315Hz/5cm/sec) at 0.4% THD.

Also seen with earlier Sumikos, there’s some slight generator asymmetry, the right channel possessing a hotter response that lifts to +5.7dB/20kHz vs. +4.3dB/20kHz on the left [dashed trace, Graph 1]. The lateral output [L+R, black trace] is also stronger than the vertical [L-R, red], favouring central/in-phase performers in the soundstage. Do also bear in mind that this extra ‘brilliance’ really only kicks in above 10kHz... Distortion is uniformly high on both channels – up to 12%/12kHz [stereo, –8dB re. 5cm/sec; Graph 2] – not because the Oriole is especially non-linear, but mainly because of this uncommonly extended HF response. PM

ABOVE: Freq. resp. curves (–8dB re. 5cm/sec) lateral (L+R, black) vs. vertical (L–R, red) vs. stereo (dashed)

ABOVE: Lateral (L+R, black), vertical (L–R, red), stereo (dashed) tracing and generator distortion (2nd-4th harms) vs. freq. from 20Hz-20kHz (–8dB re. 5cm/sec)

Hi-Fi News Measured Specifications:

Generator type/weight Moving-Coil / 7.3g
Recommended tracking force 2.0mN (18-22mN)
Sensitivity/balance (re. 5cm/sec) 282μV / 0.4dB
Compliance (vertical/lateral) 11cu / 10cu
Vertical tracking angle 26 degrees
L/R Tracking ability >80μm / 80μm
L/R Distortion (–8dB, 20Hz-20kHz) 1.1-14.7% / 0.6-11.8%
L/R Frequency resp. (20Hz-20kHz) –0.4 to +4.3dB / –03. to +5.7dB
Stereo separation (1kHz / 20kHz) 28dB / 25dB
COMPANY INFO
Pro-Ject Audio Systems
Austria
Supplied by: Henley Audio Ltd, UK
Telephone: 01235 511166
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