PVC bass reflex port extenders.

Posted on by

The current 139 litre volume of the cabinets I’m planning need a two 100mm diameter 24 cm bass reflex ports to tune to my proposed frequency of 33Hz.. Any of the bass reflex tube products cost quite a few bucks to send over to Australia unfortunately. Thanks to the useful suggestions of Stereo.net.au forum members, I got the idea of making my own from PVC water piping, using a heat gun to form the flares. But I’m not so handy with being able to fashion them presentably well, so I went with a combined approach of using some less expensive fixed lenth 200mm long ports (the same kind from Altronics I’ve already used), with some 90mm PVC piping to make short extensions with flaring on the end.

Lucky I still had the offcuts from the ones I had shortened for the Econowave speakers so I could use that to check the dimensions were OK:


Continue reading →

G3D9 – LOST EP [MACH010] Released 24:06:2013

Posted on by

Digital music distribution has reached a pretty good state now, with quality FLAC or WAV online versions of most new music releases being available at the same time as the CD, or even sometimes being the only format smaller releases are using. Since making all these speakers and amps is mostly for the music we play through it, here are some releases of note.. (though maybe not always flac download releases, or even sticking to electronic music). Called “Do Yourself A Favour” as a tribute to Countdown and Molly Meldrum.

First Up:

New release from G3D9 aka Scott Guyver3 as we knew him in the old Clan Analogue days.
Nice meat and potatoes minimal techno, well fitted to the excellent local Melbourne MACHINE label sound.

Bandcamp page to get at the goodies:
http://machinelabel.bandcamp.com/album/lost

Also available at a bunch of other places, but I prefer Bandcamp for the nice crispy flacs:
http://www.beatport.com/label/machine/18275
http://www.junodownload.com/products/g3d9-lost/2221008-02/
https://itunes.apple.com/au/album/lost-ep/id651944783?uo=4
http://www.amazon.com/Lost/dp/B00CXS3QHG

Unfortunately I couldnt make it to the launch party, but there is a live set recording available here:
http://www.mixcloud.com/MachineLabel/machine-08-g3d9-live-machine/

a new waveguide to try: 18Sound XT1464

Posted on by

There aren’t many constant directivity waveguides for 1.4″ compression drivers, but one I had not been aware of until Paul Spencer and SvenR on SNA forums brought it to my attention was the 18sound Xt1464.

After reading up on it I found it online for sale (inc shipping) not too expensive at www.thomann.de. It did take ages to show up though, with very detailed notifications of the first and last 2 days of shipping, and nothing for the 3 weeks inbetween.

Continue reading →