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My first speaker build: Overnight Sensations

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  • My first speaker build: Overnight Sensations

    I've been rolling through speakers recently and DIY speaker building came across my radar about a week or two ago. I was super impressed with how cheaply you could buy a set of speakers that, by nearly all reports, sounded fantastic. So I decided to give the Overnight Sensations a try.

    I ordered the kit from Parts Express with all the doo-dads I would need otherwise (soldering iron, solder, glue, screws, etc.) and got out the door at less than $250. I'm not much of a wood worker. I'm handy around the house, but not really a builder. I got a D in shop class when I was in Jr. High. I was building a shelf. It wasn't much, but I was determined to try this speaker thing.

    The kit came on Friday of last week. I decided to put the sides and back of the box together first, since I was going to paint the fronts a different color and I thought it would be easier to do that if the front wasn't attached. This would prove to be a mistake, but not a terrible one. Click image for larger version

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    I got to the crossovers on Sunday. I woke up ready and willing to spend all day on them, forgoing all other household duties to get them done. I started at about 10 am with a cup of coffee and all my supplies laid out in front of me. I watched the Parts Express video. Um, it stops halfway through putting together the tweeter crossover and moves at lightning speed through the rest of the crossover build. I tried stopping it in key places to see if I could make out what was happening, but it didn't do a lot of good. So I decided to look online for photos of an assembled crossover. I found a lot of them, but I also discovered that the kit is shipping with a few different parts than it used to, so I had to figure out which was which. And I discovered that there are about a million ways to put these things together, at least in the looks and layout department.

    But I persevered. Why didn't I just look at the wiring diagram? Because I've never read one before, so it didn't make a whole lot of sense. I'm a musician and small time recording engineer, but I've never done much more than wire stuff together with patch cables. The only soldering experience I had came 25 years ago when I was interning in a studio soldiering patch cables. But I looked at the video and other designs online for long enough that the crossover started to make a little sense, enough that I could look at the wiring diagram and make some sense of it. So I did that and finally got the thing loose wired together. I hooked up a speakers and the Lepai amp and tested. It worked! First time out of the gate! Patience proved successful. I never knew I had it in me.
    Click image for larger version

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    After that bit of progress I wired up the second crossover using the first as a template and then I soldered it all together. It was 4:30pm. Only took me about 5 hours of staring at the things to get them together. After that I got a couple coats of paint on the boxes and the baffles and I called it a day.

    Click image for larger version

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    Yesterday I decided I was going to finish, I got the crossovers into the boxes, I wired them up to the binding posts and speakers and tested again. Still worked! So I soldered and set to gluing the baffles on.

    I was using Gorilla Glue, which I knew from doing the boxes would bubble out the sides as it cured, so I got the baffles on and waited. I wiped what came out (I tried using just a little, but I guess not little enough), and went off to left them dry. A couple hours later I came down to the workshop to find that there was more. So here's where things started going a little pear-shaped.

    I used a Rustoleum metallic paint for the baffles and even though it had been more than 24 hours since I finished the paint, the paint still took my fingerprints as I glued the baffles. That plus the glue made it necessary to touch up. The results were not pro quality, but still, they turned out OK. Not bad for my first go. I have them in my office now and they sound decidedly better than the Bose Companion 2s I had been using.



    Now I need to figure out what to build next weekend. I'm leaning toward the Hitmakers, but I'm also thinking about the Amigas. Right now I have a set of JBL LS308 on my mixing desk. Tempting to try the Hitmakers in their place. I have a set of Klipsch RF-82II in the living room. The Amigas are a tempting replacement for them...
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  • #2
    Re: My first speaker build: Overnight Sensations

    Here are pics of the finished products.

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    The paint's botched, but I'm happy.

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    • #3
      Re: My first speaker build: Overnight Sensations

      I'd say they turned out just fine. Painting is a pain in the arse. If anything here are few tips for the next build:

      1. Try to apply finishes after any gluing or fabrication if you can help it. In your case, you probably could have put the baffle on before painting the box (I guess you probably are thinking that now). Then mask off the baffle with some tape and newspaper and paint the box and then reverse the procedure.

      2. Try a different glue. I myself like Titebond (I'm using Titebond III). Like you said, Gorilla Glue expands as it dries which for speaker building, may mean more sanding when you go to finish. Plus, you won't have to babysit them as they dry!

      After all said and done though, its how they sound that matters most, and I bet they sound quite nice as you said.

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      • #4
        Re: My first speaker build: Overnight Sensations

        Originally posted by thejtl View Post
        Here are pics of the finished products.

        [ATTACH=CONFIG]49788[/ATTACH][ATTACH=CONFIG]49789[/ATTACH][ATTACH=CONFIG]49790[/ATTACH]

        The paint's botched, but I'm happy.
        Nice build, Seems like you might have had some trouble with painting the baffle. But it happens to the best of people. Invest in primer and putting on a few coats with sanding in between, and use a spray gun. Gravity guns work fine and you can find them for 20 bucks, makes finishes look top notch. I also like using gorilla glue, within 10 minutes i usually just scrape it off carefully with a chisel. Works fine, All in all great job

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        • #5
          Re: My first speaker build: Overnight Sensations

          That was a fun read. Sounds like you got bitten by the bug!
          Isn't it about time we started answering rhetorical questions?

          Paul Carmody's DIY Audio Projects
          Twitter: @undefinition1

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          • #6
            Re: My first speaker build: Overnight Sensations

            If you do go with the Hitmakers, it would be interesting to hear how they conpare to the LS308's.

            Originally posted by thejtl View Post
            . . .


            Now I need to figure out what to build next weekend. I'm leaning toward the Hitmakers, but I'm also thinking about the Amigas. Right now I have a set of JBL LS308 on my mixing desk. Tempting to try the Hitmakers in their place. I have a set of Klipsch RF-82II in the living room. The Amigas are a tempting replacement for them...
            I was so much older then, I'm younger than that now.
            OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
            Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
            Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
            Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
            LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

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            • #7
              Re: My first speaker build: Overnight Sensations

              THanks for all the supportive comments folks. I try not to be a perfectionist, but it's hard, ya know. But they do sound great. Enjoying them with a little Tom Waits right now.

              I have a set of Hitmakers winging their way to me right now. I'm looking forward to comparing them to the JBLs. I was listening to them this morning and they are really great. They image incredibly well, have a ton of detail but aren't fatiguing. They also are still a ton of fun to listen to. I'm a big fan of a solid center in my sound field and the JBLs have the strongest I've ever heard. And it's wide. You can move around while you're working and not lose the center image.

              The JBLs actually got me to get rid of my set of Dynaudio BM 5As, which were more than double the cost.

              I'm wondering what kind of amp I should use for the hitmakers. I have a Yamaha 100WPC stereo amp of recent vintage that I could use. It's nothing special, but should do the job, right? I figured I'd try that before spending the $$ on an outboard amp.

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