Полочная акустика — Vienna Acoustics Waltz Grand

The Waltz Grand is a slim two-way loudspeaker from the Austrian maker Vienna Acoustics, part of its Concert Grand range, intended for wall mounting or for upright or sideways use on a shelf. Its angled enclosure is very shallow, and the maker lists it in Cherry veneer or in gloss black or white piano lacquer.

Key specs that matter

A pair of 6 inch bass and midrange drivers with clear X3P cones flank a 1 inch Vienna Acoustics silk dome tweeter. Vienna Acoustics rates the frequency response at 70 to 22,000 Hz, sensitivity at 91 dB and nominal impedance at 4 ohm, and it recommends amplifiers delivering between 25 and 180 W. The cabinet measures 200 x 480 x 95 mm (width, height, depth), and a pair weighs 7 kg.

Engineering and use context

The enclosure is an acoustic suspension design, so the box is fully closed and has no reflex port to vent air at the rear, a detail that matters for a speaker meant to sit flush against a wall. The two-way crossover combines 6 dB and 12 dB Bessel slopes. Its parts list names MKP capacitors held to 1 percent tolerance, air-core coils only, held to 0.7 percent, and metal film resistors, 1 percent, specified as free of inductance. The bracket and hardware supplied in the box give up to eight different mounting positions, and the cabinet can be oriented either vertically or horizontally, which lets it serve as a front pair beside a screen, as a surround or as a centre speaker under a display. Because the angled cabinet already aims the drivers, it can be fixed flat to the wall without a separate tilting mount. In a living space of around 20 m2 a pair can hang either side of a television or shelf unit without taking any floor space.

Pairing

The low nominal impedance means any amplifier or AV receiver used with it needs a rating for stable operation into such loads, and its power ought to sit within the window Vienna Acoustics recommends. With the high sensitivity figure, a modest integrated amplifier from the lower end of that window is enough to drive a pair. Since the sealed box rolls off below its rated lower limit, a subwoofer can be added for films or for full-range music playback, and the matching finish options make it simple to combine with other Concert Grand models in a multichannel system.

Alternatives

The Haydn SE Signature is the compact stand-mounted design of that same Concert Grand Series from Vienna Acoustics, with a single X3P mid-woofer in a rear-ported QB3 cabinet.