Loudspeakers

Innovative technology helps the Quadral stand out from the field A mere glance at the Platinum M4 is sufficient to identify it as a Quadral, the bass drivers recessed behind aluminium slats being a clear visual cue, whether the speaker carries the Quadral name or that of its prestige Aurum brand. It isn’t just a cosmetic feature but a part of Quadral’s enhanced form of reflex loading – there’s a large port at the rear of the cabinet – which really does perform differently if the relatively flat impedance curve is anything to judge by. A four-driver three-way, the Platinum M4 matches its twin metal-coned bass drivers to a similar metal-coned midrange unit, above which is not the ‘ribbon’ (actually leaf) tweeter we’re used to seeing in Aurum models but Quadral’s RiCom-M ring tweeter, which is unusual for its annular diaphragm being of titanium. Quadral claims that it produces character-free treble output with broad dispersion.

Danish-based Dantax Radio reinvents a classic: a rework of the Raidho D2.1, now fitted with tantalising drivers

Déjà vu, all over again? Very recently we were playing 'spot the difference' with the Scansonic MB5 B floorstanders [HFN Jun '20], a superficially lookalike but substantially revised version of the old MB5 and one of the latest from Dantax Radio's growing GamuT/Raidho/Scansonic family. This month the focus is back on Raidho itself, with the arrival of a new version of the D2.1 speaker [HFN May '18] where, as with the M5/M5 B, there's quite a bit of visual similarity between old and new.

A beryllium tweeter is the highlight of these new speakers – do they really 'redefine performance expectations'?

They clearly don't believe in sitting on their hands at Revel as the Performa3 M106 and F208 speakers have recently been subject to wholesale revitalisation, creating the PerformaBe range, said to 'redefine performance expectations'. Comprising the £4000 M126Be standmount/bookshelf speaker and the £10,000 F228Be we have here, the new models are available in a choice of high-gloss piano black, white, American walnut or metallic silver and, while the use of ceramic-coated drivers is familiar Harman/Revel fare, the new talking point is a beryllium dome tweeter.

Since its birth, devotees of the LS3/5A have craved more bass – does the answer lie in Rogers' active AB3a sub?

Delayed because of the pandemic, Rogers' AB3a subwoofer is one year off being able to claim it's the 25th anniversary celebration of its passive predecessor, 1995's AB1. Yes, the gap between them has been that long. The postponement doesn't, however, diminish the delight LS3/5A users will show for the arrival of a dedicated active subwoofer for one of the most celebrated small monitors in the history of hi-fi. It's here, and it's a honey.

Like buses, you wait and wait for genuine LS3/5as and then two come along – now Rogers is back with a re-engineered version of the milestone, to our reviewer's delight

Throughout my hi-fi career, I have manifested three fixations: valves, Decca cartridges and BBC LS3/5as, all of which faced sell-by dates 40 years ago. My pessimism was unfounded. Valves have never been stronger, and London maintained the Deccas. But LS3/5as? Aside from occasional facsimiles using non-KEF drivers, the LS3/5a was history. Yet now we have two new proper LS3/5as, a rebirth I never anticipated.

The middle model in Scansonic's trio of M-series loudspeakers is one of the growing breed of 'compact floorstanders'

Take a look at these Scansonic floorstanders, and you'll notice they look big and impressive, especially for speakers selling for a sensible £1499 in very on-trend black or white silk finishes. But don't let our photographs of the M20 fool you for those mid/bass drivers are just 10cm in diameter – or four inches in old money – and the baffle a few cm wider still. Recalibrate your view based on those figures, and you'll realise these speakers are well short of a metre tall – 93.5cm, in fact – and that, if not quite knee-high to a grasshopper, means these aren't what you'd call 'room-dominating'.