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  1. The September 2015 meeting of the Sydney Audio Club sees us once again gather for an afternoon of fine music, great sound and amicable company. Each month, the Sydney Audio Club presents the finest in high end audio systems for our members and guests. It's a bit like a private audio show once a month where you can hear and discuss equipment that you might not otherwise have the chance to audition. And you can bring along your own music to test the capabilities of the system or to just share with like-minded music lovers in a friendly and relaxed atmosphere. This month we will be presenting the Linkwitz Lab LX Mini speakers. These DIY speakers are one of many products from the fertile mind of Siegfried Linkwitz. Siegfried Linkwitz has over 40 years of experience in loudspeaker design, electro-acoustic system design and the perception of sound from loudspeakers in normal rooms. (As well, his name is one half of the infamous Linkwitz-Riley crossover filter). In his own words taken from the Linkwitz website… “The LXmini is a most remarkable loudspeaker. It converts electrical signal voltages into acoustic pressure variations, which are perceived as completely neutral and detailed even in a reverberant environment. With this design I want to give every music lover the opportunity to build and enjoy a reference quality sound system singing in their own living space.†These are unusual and interesting speakers, and although they may appear on the small side, we expect them to be able to drive our room. The pair we’ll have on the day were built by inveterate tinkerer and dedicated Sydney Audio Club member, Graham Allen. Graham will kindly give a talk about the speakers between tracks. Details of the system…. Linkwitz LX Mini speakers – Refer to http://www.linkwitzlab.com/LXmini/Introduction.htm plus http://www.thingiverse.com/thing:748550 and http://www.magiclx521.com/news.html. These speakers utilize a 6.5 inch bass driver and a forward firing full-range driver in each speaker. The drivers are from the SEAS Prestige range. Here is an excerpt taken from the Linkwitz website… “…With directivity controlled in this way the LXmini becomes much less sensitive to room placement, while also gaining in 3D imaging precision. The small, full-range driver on top is superbly smooth and detailed. It blends flawlessly with the pistonic, infinite transmission line woofer for a completely neutral sound in a reverberant room. The speaker stands 40" (1 m) tall. It requires two stereo power amplifiers of 80 W for woofer and full-range drivers. The four input signals to the power amplifiers are generated in a miniDSP 2x4 processor from the left and right outputs of a preamplifier or other device with a volume control.†Btw – Herb Reichert at RMAF 2014 had this to say… “The Linkwitz Lab's LXmini loudspeakers […] produced the most musically enjoyable, naturally balanced, properly toned, correctly detailed, music I experienced in any room on my beat.†Refer to http://www.stereophile.com/content/rmaf-2014-reichert-sunday#7ui6svMXPrp4CCCz.97 The plans to build them can be purchased through the Linkwitz Lab web site (for $105 USD). You can order the kit through Madisound in the US for $398 USD (on sale at the moment). Refer to https://www.madisoundspeakerstore.com/2-way-speaker-kits/lxmini-linkwitz-lab-speaker-kit-pair/ The pair Graham will be demonstrating have been built by him, closely following the Linkwitz plans with some minor cosmetic changes to the mounting of the high frequency driver and using solid granite bases. The finish on the pipe shaped enclosures is a polyurethane water-based varnish system applied over a textured and coloured paper substrate. Subwoofer - 2 x 15inch dipole subwoofer. NAD preamp – the NAD 1700 Monitor Series. NAD Power amps – the NAD 2600 Monitor Series on the bass and the NAD C320BEE for the high frequency. Refer to http://www.thevintageknob.org/nad-2600.html and http://www.stereophile.com/content/listening-7-page-2#GmHHDGot6lhR7XQz.97 Oppo BDP-105 Universal player – Refer to https://www.oppodigital.com/blu-ray-bdp-105/ and http://www.theabsolutesound.com/articles/oppo-bdp-105-universal-blu-ray-player-and-dac/ The second half of the music sessions will be our popular BYO. Members and guests are welcome to offer music to share with us all. So bring along your favourite music on CD/SACD, flash drive or vinyl. All we ask is that the music and recordings be interesting. We'll ask you to tell us a little about the artist/recording before it is played. Tracks over 6 minutes will be faded out, to give everyone a fair go. Whether you are a novice or a seasoned veteran, you will have the opportunity to listen, learn and share your experiences with others of a similar mind. Guests are always welcome – we are a very friendly club so you don't need to know anyone to join us for an afternoon of fine music and sound. We will welcome you at the door. Venue: Epping Creative Centre, Dence Park Address: 26 Stanley St, Epping When: Sunday 13th September 2015 Doors open 1pm Meeting starts at 2pm Best regards, Tom Waters President Sydney Audio Club www.sydneyaudioclub.org.au tomwaters@sydneyaudioclub.org.au
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