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SB Acoustics monitors build

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  • Steve Lee
    replied
    Just needed an excuse, didn't you?

    :D

    Show-off . . .


    Leave a comment:


  • DeZZar
    replied
    Click image for larger version

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    Both boxes done.

    Because these will be veneered I have laminated 3mm MDF on top and back where there is exposed MDF end grain to avoid any issues with the joints showing through the veneer in the future.
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    Opted for a solid timber baffle so gluing up some Oak boards here which I'll then stain to match the veneer on the rest of the box when it all comes together.
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    Onto the baffle tomorrow...
    Attached Files

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  • DeZZar
    replied
    The answer was yes of course.

    Wanting to keep a similar sized cabinet I ended up pairing the SB29RDC tweeter with the SB17NRX2C35-4 6 inch woofer in a net 15L enclosure tuned to 40hz for an f3 of 45Hz. The woofer will take about 26 watts and will be good for 100db. I think that's more than enough for a couple of monitors.

    Cabinet design is nothing fancy - just well braced and made from 1/2 inch (12mm) MDF sheet with cleats added to all the internal edges to strengthen it up. Front baffle will be 19mm solid wood.
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    I had some precision port flares on hand but I did end up getting creative with the port design and the 3D printer is now hard at work printing up this dual elbow solution.
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    Sheet stock cut and the braces completed.
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    Getting the glue-up under way!
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  • DeZZar
    started a topic SB Acoustics monitors build

    SB Acoustics monitors build

    The other day I was talking to my neighbor and he remarked that he had just gotten some speakers off some lady on Gumtree (sort of the Aussie version of Craig's List) and after getting them they weren't working.

    So I took delivery of said not working speakers on the promise I'd take a look. Well, the fact the poor guy paid money at all for these things is an injustice!

    No idea what time period they are from but one look at them tells me they originally came partnered with one of those all-in-one in multi stack stereo systems. Appear to be a three way.

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    Wait....is that daylight I can see through the 'midrange'....??

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    ..and I didn't even really need to look to know this was the problem!
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    I've seen bigger fridge magnets.....and that's the sum total of the crossover you get!
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    So needless to say my advice to my neighbor was that these should just head straight to the bin.

    Given I have a spare sheet of 1/2 inch MDF, some left over veneer, some SB tweeters in stock and some other parts on hand.....do you want me to just build you a decent set of monitors?
    Last edited by DeZZar; 09-17-2021, 10:30 AM.
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