Loudspeakers

Given the TuneTot's compact dimensions and its 8ohm nominal impedance, the specified 86dB sensitivity looked ambitious and so it proved: we recorded 83.3dB for 2.83V at 1m on pink noise. Given that this really is an 8ohm design, our measured minimum modulus of 6.7ohm at 174Hz being very close to Wilson's specification, it's surprising that impedance wasn't lowered to assist sensitivity. Impedance figures in the test table are for the foam port bung in place, for two reasons: (1) the minimum EPDR (equivalent peak dissipation resistance) is lower when the TuneTot is operated as a closed-box (3.3ohm at 108Hz compared to 3.7ohm at 134Hz in reflex mode), and (2) the TuneTot has flatter, more extended bass in this configuration.

Forward frequency responses [Graph 1] were taken at 1m on the tweeter axis, a little below the axis recommended by Wilson, with grille removed and driver trim rings in place. The dip at around 3kHz and peak at 18.5kHz might well be reduced on the Wilson axis, improving on the high response errors of ±5.6dB and ±5.9dB (200Hz-20kHz). Pair matching, over the same frequency range, was good at ±0.8dB. Our diffraction-corrected near-field bass measurements show an odd LF behaviour. In reflex mode, bass extension is limited to 73Hz (–6dB re. 200Hz) and follows a whopping peak at 113Hz (+8dB re. 300Hz). By contrast with the port bung in place the extension improves to 55Hz and the upper-bass peaking is less extreme. The cleanest CSD waterfall [Graph 2] was obtained without either the grille or the driver trim ring fitted. There's a low-level resonance at 3kHz and the familiar high-Q 15kHz dome resonance from Wilson's tweeter, but otherwise the plot is pretty clean. KH

Sensitivity (SPL/1m/2.83Vrms – Mean/IEC/Music):84.6dB / 83.3dB / 82.6dB
Impedance modulus min/max (20Hz–20kHz): 6.7ohm @ 174Hz / 66.6ohm @ 68Hz
Impedance phase min/max (20Hz–20kHz): –60° @ 80Hz / 50°@ 56Hz
Pair matching/Response Error (200Hz–20kHz): ±0.8dB/ ±5.6dB/±5.9dB
LF/HF extension (–6dB ref 200Hz/10kHz): 55Hz / >40kHz/>40kHz
THD 100Hz/1kHz/10kHz (for 90dB SPL/1m) :1.1% / 0.7% / 0.3%
Dimensions (HWD) / Weight: 377x219x259mm / 13kg
Price: £10,998