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The Quarks - M.O.S.D. Computer Speaker

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  • Chris Roemer
    replied
    Funny, I didn't realize it but I've got a pair of those on the bench (apparently they're Dayton DS90-8s). They'll PROBably work OK as a 3" woofer in that box. Same vent. I'll look at the XO later (today maybe). I wouldn't call them the "Quarks" though, maybe the "Charms". (Hope JB doesn't mind).

    Anyone got a schematic or XO description?
    Last edited by Chris Roemer; 08-04-2017, 10:16 PM.

    Leave a comment:


  • Kootskid
    replied
    Thanks for replying Chris. I have already bought the woofers and tweeters, so I am looking for peoples knowledge on whether these components could be used in the Quarks build. I do not have the capability to measure these woofers at the present time. I may have to resort to a build and see effort, but I would like to get some comments from some of the builders here before starting to build.

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  • Chris Roemer
    replied
    JB thinks the FE-85 could be substituted. Why not try that?

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  • Kootskid
    replied
    Hi, I am hoping this thread is alive. My first post, my first build (proposed). Since the F83's are not available, I purchased these woofers PE part# 299-422. I have included the T/S parameters for both the Buyout woofer and the F83 as published. Note: I tried to attach a normal word document with docx extension and would not accept. May be I need to read the forum rules for attachments.

    I am hoping the woofer can be used as a replacement, with just some minor tuning & crossover work. Your answers and comments are greatly appreciated. Thank you for the help.

    Myles

    Buy out Product Specifications
    • Nominal Diameter3"
    • Power Handling (RMS)20 Watts
    • Power Handling (max)40 Watts
    • Impedance 8 ohms
    • Frequency Response80 to 13,000 Hz
    • Sensitivity84.1 dB 2.83V/1m
    • Voice Coil Diameter0.8"
    • Magnet Weight8 oz.
    Thiele-Small ParametersMaterials of Construction
    • Cone MaterialCoated Paper
    • Surround MaterialRubber
    • Voice Coil Wire MaterialCopper
    • Voice Coil FormerAluminum
    • Basket / Frame MaterialSteel
    • Magnet MaterialFerrite
    Mounting Information
    • Overall Outside Diameter3.63"
    • Baffle Cutout Diameter2.76"
    • Depth1.76"
    • Bolt Circle Diameter3.27"
    • # Mounting Holes4
    Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)

    Fountek 83 Product Specifications
    • Nominal Diameter3"
    • Power Handling (RMS)12 Watts
    • Impedance8 ohms
    • Frequency Response100 to 25,000 Hz
    • Sensitivity85.7 dB 1W/1m
    • Voice Coil Diameter0.78"
    Thiele-Small ParametersMaterials of Construction
    • Cone MaterialAluminum
    • Surround MaterialRubber
    • Voice Coil Wire MaterialCCA
    • Voice Coil FormerAluminum
    • Basket / Frame MaterialSteel
    • Magnet MaterialFerrite
    Mounting Information
    • Overall Outside Diameter3.55"
    • Baffle Cutout Diameter2.75"
    • Depth1.7"
    • Bolt Circle Diameter3.25"
    • # Mounting Holes4
    Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)

    Leave a comment:


  • bullittstang
    replied
    I think you would be fine, they are close to the same weight as my laptop, that I know is 3-pounds, so they are probably 4-5 pounds.

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  • Dirk
    replied
    To those who have built a Quark, would you be able to weigh one?

    I'd like to put a captured nut on the back to mount them on the lightweight Monoprice stands. The stands have a 5lb capacity, so I thought it would be good to ask before going further.

    Dual monitors these days leave so little desktop real estate...

    Leave a comment:


  • mikejennens
    replied
    Jeff or someone else that might know... I looked but couldn't find the info; what is the crossover point for the Quarks?
    Thanks!

    Leave a comment:


  • Erich H
    replied
    Originally posted by bscalled View Post
    I have a couple questions. Tucked inside the back vents was a length of sticky foam. Was this intended to seal the back? Or make a seal around the bigger driver? Anyone skip using it?
    It's gasket tape for the back side of the woofer.

    Leave a comment:


  • bscalled
    replied
    Thanks guys, and Jeff F; I thought I'd read that somewhere once but I overlooked it recently; read the first few posts over then skipped to the end. I also appreciated ScenesFromAHat drawing out the crossover, which I used to check mine.

    I guess the tape was something I put in the box myself, I don't know. I just discovered a box with an Overnight Sensation kit in it, which I just barely started then forgot all about. I think I was going to build both small speakers, compare them, and give one pair away. Yikes. It's been an eventful few years and that's the excuse I'm sticking with.

    Leave a comment:


  • Jeff F.
    replied
    Originally posted by bscalled View Post
    Also, is there meant to be any stuffing in the box? If so, a measurable amount, or just a handful?
    See post #8 in this thread. Oh, and your speakers look very nice!

    Leave a comment:


  • Millstonemike
    replied
    Originally posted by bscalled View Post
    I had some nicely beat up white and red oak from pallets I wanted to use, cut offs from a larger project.
    Very nice build. I can't decide between pretty or handsome (or both).

    Don't you just love the wood you can reclaim from pallets. In the 90's, I had access to a full wood shop (planar, jointer cabinet saw), and was able to reclaim red oak from several pallets. I made a scale bridge and 36 count trestle set for the kids G-scale trains running around the tree at Christmas time.

    Leave a comment:


  • bullittstang
    replied
    Very nice bscalled those turned out great, and well worth the time invested. Listening to a pair at my office desk as a type this. FYI, wouldn't have even guessed pallet leftovers if you hadn't said anything.

    Leave a comment:


  • bscalled
    replied
    I have a couple questions. Tucked inside the back vents was a length of sticky foam. Was this intended to seal the back? Or make a seal around the bigger driver? Anyone skip using it? As I type this they sound pretty good.

    Also, is there meant to be any stuffing in the box? If so, a measurable amount, or just a handful?

    And, I have a flat-pack left over I don't need. (Assuming I can find it.) Happy to send it off to whoever for the price of shipping it. I don't think that will be very necessary for anyone as I think all the kits come with the packs, don't they?

    Leave a comment:


  • bscalled
    replied
    Okay seems like years since I started these but I guess given the start date of this discussion the most it could be is a year and a half. I've built maybe a dozen pairs of speakers, more interested in following plans than designing; it's led me into woodworking which is a better fit for for me. Anyway these were meant to be a two birds solution, new desktop speakers, and a way to practice gluing up boards, planing, and cutting dovetails. I had some nicely beat up white and red oak from pallets I wanted to use, cut offs from a larger project. I did most of the work when I got the kit but was disappointed by my many mistakes, so I put them away for a week, which turned into a year and some months. I'll see if I can do some glamour shots.

    Leave a comment:


  • violinbf
    replied
    I used a very sharp Stanley #4 bench plane to smooth out the joints after the glue dried. It was much faster than sanding. Careful of the direction, it's easy to blow out MDF. If you en up splitting any edges (as I did) you can just glue them down again using titebond. Fill any remaining gaps with bondo, sand and paint... you should not see any seams after that.

    Leave a comment:

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