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Second Skin Audio

Soundqubed HDC3 12" DIY box build


jimdog32526

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I have been going back and forth on sub selection and finally decided on a Soundqubed HDC3. This company, unlike most posts box designs specific for their speakers. So I'm giving this a shot to see how it works out.  I mostly listen to classic rock so a super low tuned cabinet is not required. 

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For wood selection I went with $50 a sheet A/B grade 3/4" 7 core birch plywood.  It's really tough stuff. I took all the dimensions from the SQ website and drew up a cut sheet in CAD and printed it out.

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Then I went to home depot and rented a makita table saw for $50. What an awesome tool! It made quick work of the job. The brand new blade they put on there made the cuts perfect.

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I used my router to cut out the speaker opening. Dropped it in for a test fit.

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Then started gluing and screwing. I'm pre drilling holes for counter sunk 2 1/4" deck screws to hold it all together. Then gluing all joints with gorilla wood glue.

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45's in the corners.

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Port laid in.

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Now for a second front baffle to stiffen things up.

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Then I coated all the seams with lots of epoxy. Then I used spray can Bed liner  (thin) on the inside.

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All sealed up. 

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Test fit.

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For the finishing touch, I'm taking inspiration from my bass rig I used to tour with in the 80's. It will look just like a Mesa Boogie road ready cabinet. I ordered up the ata case parts and they should be here Friday. This will add extra stability to the cabinet seams as well.

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I started covering the box with formica last night but only got 2 sides done. Should be finished tonight.

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I'm using T nuts to mount the speaker and 1/4-20 Allen head screws with loctite.

More to come tonight.

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Tuning lower is actually better for music. Higher tuned boxes have bigger peak around tuning frequency which will muddy the bass. Tune lower to get better response for Rock. 

 

 

Box looks great.

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