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A "Just for the fun of it" project

For no other reason than I've had the buyout woofers sitting around doing nothing for years, the tweeters were only $12 each on sale, and I've got more sheets of MDF and crossover parts than I know what to do with.  I don't expect these to be super revealing or whatever HIFI term might apply, but they should be quite fun!

The Peerless buyout woofers (835004) were originally $10 each and are a simple surface mount installation.  The tweeters (DA25BG08-06) have a standard 4.09" diameter faceplate so they will be flush mounted.  No fancy hardwood baffles on these.  Probably just some black Duratex over MDF.  They won't go super low but they will go super loud - LOL


Drivers just sitting on the baffle board for a photo op.
kennykjr@macThumperTom6thplanetjhollanderSilver1omoBryan@MACD1PP1NS7910dynamoand 1 other.

Comments

  • Post them on Craigslist "Free speakers for whoever can explain the difference between a centrifugal and roots blower"
    PWRRYD
  • 2.5 way?
    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • Back to our roots, love it!
    PWRRYD
    I have a signature.
  • Yeah most likely.  I can't decide that though until after raw in-box measurements and a bunch of xo sims of them as straight 2 ways and 2.5 ways.
    rjj45
  • edited September 11
    jr@mac said:
    Back to our roots, love it!
    I know, right?  No worries about if there are any copper rings in the woofers' motors.  Lobing?  Most likely  B)
  • Remember those cool Bravox blue and silver cone drivers?  What about those strange frame Klipsch 6.5" drivers?  The Max Fidelity paper cone 5.25"?  All those Peerless drivers that Ron E used in so many nice projects?  Man... those were some fun and exciting times on PETT.
    rjj45S7910JasonP
  • Yeah, buyouts have been... Not exciting for a long time now.
    rjj45
    I have a signature.
  • I'd really like to do another buyout build with some TV drivers.  To much life commitments or I'd hit up PE to sponsor something.  I thought the NS6's started life as a buyout
    rjj45
     John H, thanks to JP I did get that email
  • PWRRYD said:
    Remember those cool Bravox blue and silver cone drivers?  What about those strange frame Klipsch 6.5" drivers?  The Max Fidelity paper cone 5.25"?  All those Peerless drivers that Ron E used in so many nice projects?  Man... those were some fun and exciting times on PETT.
    I picked up another 10 of those woofers and hope to have another project to bring to DIY Iowa. I recently finished a pair and shipped them off to a friend in California.



    Ron
    rjj45Turn2S7910PWRRYDJasonP
  • I have enough of the bravox blue cones to make a complete surround system ( sans sub ).
    ............. could you hum a few bars.
  • @Ron_E

    Very pretty!
    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • PWRRYD said:
    Remember those cool Bravox blue and silver cone drivers?  What about those strange frame Klipsch 6.5" drivers?  The Max Fidelity paper cone 5.25"?  All those Peerless drivers that Ron E used in so many nice projects?  Man... those were some fun and exciting times on PETT.
    Bravox blue (aka Dahlquist special)? Don't know what you're talking about... :p


    And that's not all, I think 16 were ordered, about 50% of them had issues with voice coils being off centred by a mile as the cones were squished and were stuck off centre. PE sent some more as freebies, again about 50% failure of those. Luckily we were able to get them to usable state by stuffing some batting behind the cone to push it forward and left like that for a week or two.

    They were the okayest speakers, the Peerless buyouts in the OP are a better speaker IMO.
    PWRRYDkennykJasonP
    My opinions are 100% factual
  • On the subject of lobing; is there some kind of easy-peasy calculator for this?  
  • I have an Excel based graphical spreadsheet that John K created long ago.  All you do is enter the driver's effective radius in inches and it produces three different graphical plots of the beaming.  I like it a lot,  Here's a dropbox link in case anyone is interested.  LINK
  • Thanks Ed. I'd not seen that before.

    Jim
  • I re-read Kornbread's post and realized he was asking about lobing issues, not beaming issues.  In that case I know of two other Excel based spreadsheets produced by the FRD Consortium back in the early 2000's:  Asymmetrical Response Pattern Estimator (ARPE) and ARPE Lite.   Here's an abbreviated description of the programs:

    "The Asymmetrical Response Pattern Estimator is a design estimation tool to predict On and Off-Axis Response and Polar Radiation Patterns, in multiple driver systems, from Driver Size/Shape, Inter Driver Spacing/Tilt and Crossover Influences.  It is used to see complex driver interactions in Horizontal and Vertical Polar Patterns and in a conical projection, Off-Axis Frequency Response.

      ARPE Lite is a slightly simpler version of Asymmetrical Response Pattern Estimator. ARPE Lite produces identical results but is missing buttons to input FRD files, control/display phase, save chart images and is limited to three driver simulations only."

    I wouldn't categorize these as "easy-peasy" to use, but Patrick Bateman over at diyaudio created a thread  on how to use ARPE. LINK.  I would start with ARPE Lite at first.

     I could only find these on the wayback machine, so I put both of them in Dropbox:

    ARPE:  LINK

    ARPE Lite: LINK

    And the wayback link to the ARPE page with full description:  LINK

     You can download the programs directly from the wayback page if you want.  I use Excel 2010 and it complains about about cell labels in formulas not being supported, but says the programs will still work as Excel will use cell references instead.  FWIW.


    rjj45
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