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DIY Speakers and Stands

Planter box Speakers IkeaBjuron speakers ikea

My equipment is under on-going upgrade. I am designing new speakers enclosures and speaker stands. This comes as no surprise because the quest for hi-fi is often incomplete. When finances permit we have a tendency to upgrade components or tweak things. This is truly a high maintenance hobby; we learn to have fun and enjoy the music along the way. The stands I'm building are sand filled columns to support bookshelf speakers. My previous speakers were infinite baffle, which allowed the speakers to rest on the floor and reflect from the back wall. This time I plan to enclose them in a bookshelf sized box. I expect the sound to tight up and sound rich. For years the drivers have been in an infinite baffle setup. The sound was very airy, open, and light. Lets see how things play out.

I built prototype speakers using Bjuron planter boxes from Ikea. One enclosure used sealed chambers for both midrange and midbass. The other enclosure used a dipole configuration for the midbass and a sealed for the midrange. The second configuration sounded best. I am sampling this configuration and continuing the tweaking.

The Qtc is set to 1.24 now, which increases the bass response at 118hz. However I plan to bring this down to 100hz with a Qtc of 1.0. This will lift the lower response without muddying the bass. I plan to keep the midbass in dipole mode to allow more openness between instruments and vocals. The sound is very lush; yet, I'm aligning the drivers and tuning the sound. I find that angling the midrange and tweeter back 20 degrees spreads the sound stage without narrowing the sweet spot.

Butcher Block for speaker stands

As for the speaker stands, I cut 1x6 decking and 4" plumbing to listening height (tweeters at ear level) and filled with sand. The base and top were cut from butcher block. To keep the sand inside I sprayed expanding foam in the top and bottom.

The base has spiked feet

Using foam to seal the top

Filling with sand upside down

Using foam to seal the bottom

Weight added to seal the fill hole

Wait until the foam dries before removal



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