Arendal Sound announce 1723 Bookshelf S THX speakers

Bigger is not always better

by Andy Bassett Feb 13, 2019 at 10:14 AM

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    Arendal Sound announce 1723 Bookshelf S THX speakers
    Norwegian speaker manufacturer, Arendal Sound, have listened to their customer feedback and have now released the smallest member of their 1723 range of THX certified speakers, the Bookshelf S.
    Noting that speaker fans don’t necessarily always want bigger, more powerful speakers and that sometimes convenience wins out over brute force, Arendal Sound have announced the Bookshelf S, designed for smaller spaces and which can be perfectly matched to any of the existing 1723 speakers.

    The Bookshelf S is a 2-way speaker featuring the same custom made mid-bass drivers and waveguide tweeters found in the rest of the 1723 series.

    The 28mm tweeter utilises a synthetic soft dome with a custom designed matching waveguide. Top end frequencies from tweeters tend to be quite ‘beam-like’ in their dispersion so the waveguide has been modelled to broaden that dispersion pattern. Similarly, the frequencies at the lower end of the tweeter’s range need to be more focused as they can spread out too much. Controlling the way these higher frequencies move into the room means they can be matched to the dispersion pattern of the mid-bass driver, thus simplifying crossover design.

    The 165mm (6.5-inch) woofer is an entirely bespoke design optimised to cover a very wide frequency range from 1500Hz, down to the lowest bass notes, without cone resonance. Construction incorporates CCAW (Copper Clad Aluminium Wire) in the voice coil and an aluminium shorting ring to reduce inductance. The long fibre pulp cones are self-damping and remain pistonic throughout their operating range.

    These drivers are contained within a sealed, High Density Fibreboard (HDF) cabinet which is sonically inert and better damped than MDF. Internal bracing both strengthens the cabinet and reduces panel vibrations. The front grilles are made from perforated metal wrapped in black cloth and magnetically attached to the front of the cabinet. The company makes a specific stand against any plastic components in their products and the Bookshelf S is no different.

    The Bookshelf S’s smaller size inherently leads to a lower output compared to its bigger siblings, but a wide, deep and involving soundstage, courtesy of the waveguide in the tweeter, helps make up for this.

    As with all the other 1723 speakers, the Bookshelf S is THX certified - so what does this mean? All speakers requiring the certification undergo the very strict testing protocol of THX Ultra, where each speaker has to pass a set of 400 measurements in key areas. The 1723 range acquired certification straight from the factory without any correcting tweaks. THX Certification is a guarantee of tight consistency within well-established acoustic parameters and is as much about music as it is for movies.

    The Bookshelf S is finished in matte or gloss and there’s a choice of either black or white. Prices for the matte finish are €1.299 /pair with the gloss finish slightly more at €1.399 /pair.

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