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| comment | | "parent_author":"",<br>"parent_permlink":"howto",<br>"author":"drakmin",<br>"permlink":"speaker-building-project",<br>"title":"Speaker building project",<br>"body":"### Worklog of building speakers.\n\nhttp:\/\/i.imgur.com\/Bxjz1tM.jpg\n*Finished speaker in my living room*\n\nThis project is based on Audiovideo.fi instructions *Yksisilm\u00e4iset veljekset* http:\/\/audiovideo.fi\/opas\/kaiutinrakennusohje-yksisilmaiset-veljekset-hifi-pa-kaiuttimet-eminence-beta-8cx-beta-10cx-ja\n\nTranslation of the name into english would be something like *Cyclop brothers*. These are coaxial speakers so the tweeter is placed in the center of the bass driver.\n\n### Let's start!\nI found a promising speaker design on Audiovideo.fi website and decided to order the components required. The design consists of 12\" Eminence CX driver and a horn tweeter placed in the center of the bass driver. All the sound comes from a single point. The original design has different shape for the enclosure. I wanted to make a floor stander so I changed the height and depth but maintained the inner volume. Inner volume needs to be as originally designed as the design uses bass reflex tuned box.\nhttp:\/\/i.imgur.com\/Gi3i2v7.jpg\n*Illustration I made of the new box dimensions in 3dsmax.*\n\n\nhttp:\/\/i.imgur.com\/iM9lAXl.jpg\n*Precut 18mm plywood sheets and my tools on my balcony.*\n\nhttp:\/\/i.imgur.com\/Diw6DeW.jpg\n*Using router to flush mount reflex ports and drivers,<br> a few finished parts on the backround.*\n\nhttp:\/\/i.imgur.com\/98iGAu5.jpg\n*Nice 100mm reflex ports. Each speaker has two so the tuning frequency can be adjusted by blocking one or two ports with socks etc.*\n\nhttp:\/\/i.imgur.com\/qV8abm5.jpg\n*Only front wall missing,<br> notice the inner bracing*\n\nhttp:\/\/i.imgur.com\/2Rqwp1b.jpg\n*36mm front wall with routed flush mount*\n\nhttp:\/\/i.imgur.com\/BqHB5C0.jpg\n*Soldering the crossover*\n\n### Finished speakers\n\nhttp:\/\/i.imgur.com\/Bxjz1tM.jpg\n\nhttp:\/\/i.imgur.com\/9IYgl9a.jpg\n\nhttp:\/\/i.imgur.com\/dW27WF9.jpg\n\nhttp:\/\/i.imgur.com\/BolgzGE.jpg\n\n## Afterthoughts\n\nProject was successful. Cost remained a bit below 700\u20ac for a pair. The *Cyclops* are easy to listen. They have enough bass extension to work even with movies without a subwoofer. (atleast for my taste)\n\nhttp:\/\/i.imgur.com\/pXeGVYq.jpg\n*A simple frequenct response measurement* \nI measured the in room response using Antimode 2.0 and Room Eq Wizard. I believe I made some mistake in the REW for the vertical units. I would say the graph should have -6db where it now has -10db. Anyways the low end seems to reach 30hz and this is easily verified by my hearing :D\n\nA few links:\nhttp:\/\/audiovideo.fi\/opas\/kaiutinrakennusohje-yksisilmaiset-veljekset-hifi-pa-kaiuttimet-eminence-beta-8cx-beta-10cx-ja\n\nhttp:\/\/www.roomeqwizard.com\/\n\nhttp:\/\/www.dspeaker.com\/en\/products\/20-dual-core.shtml\n\nSome images previously released on https:\/\/www.flickr.com\/photos\/drakmin\/ and some speaker building forums.",<br>"json_metadata":" \"tags\":[\"howto\",<br>\"photography\",<br>\"guide\",<br>\"diy\",<br>\"hifi\" ,<br>\"image\":[\"http:\/\/i.imgur.com\/Bxjz1tM.jpg\",<br>\"http:\/\/i.imgur.com\/Gi3i2v7.jpg\",<br>\"http:\/\/i.imgur.com\/iM9lAXl.jpg\",<br>\"http:\/\/i.imgur.com\/Diw6DeW.jpg\",<br>\"http:\/\/i.imgur.com\/98iGAu5.jpg\",<br>\"http:\/\/i.imgur.com\/qV8abm5.jpg\",<br>\"http:\/\/i.imgur.com\/2Rqwp1b.jpg\",<br>\"http:\/\/i.imgur.com\/BqHB5C0.jpg\",<br>\"http:\/\/i.imgur.com\/9IYgl9a.jpg\",<br>\"http:\/\/i.imgur.com\/dW27WF9.jpg\",<br>\"http:\/\/i.imgur.com\/BolgzGE.jpg\",<br>\"http:\/\/i.imgur.com\/pXeGVYq.jpg\" ,<br>\"links\":[\"http:\/\/audiovideo.fi\/opas\/kaiutinrakennusohje-yksisilmaiset-veljekset-hifi-pa-kaiuttimet-eminence-beta-8cx-beta-10cx-ja\",<br>\"http:\/\/www.roomeqwizard.com\/\",<br>\"http:\/\/www.dspeaker.com\/en\/products\/20-dual-core.shtml\",<br>\"https:\/\/www.flickr.com\/photos\/drakmin\/\" " | | vote | "voter":"drakmin",
"author":"drakmin",
"permlink":"speaker-building-project",
"weight":10000 |
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