Home » Sponsored » Pi Speakers » Corner sub and Center projects
Corner sub and Center projects [message #41697] Sun, 22 June 2003 20:03 Go to next message
Chris R. is currently offline  Chris R.
Messages: 82
Registered: May 2009
Viscount
Hi Folks,

I finally finshed my center channel project, and wanted to post
a few pictures of it, plus the corner sub that a couple of months
old. The sub box is way under sized according to specs, but still
works great. The center channel sounds surprizingly nice.
Any questions? Fire away...

  • Center channel is 2 Fostex FE127E's and 1 KSN1038.

  • Center channel.
  • Front view of center sub-woofer.

  • Sub-woofer face.
  • Top view of center sub-woofer.

  • Sub-woofer Top.
  • Business end of sub-woofer. misc. Eminence 15" woofer (eBay special) and PE 250W amp.

  • Business end of sub-woofer .
  • View of part of the system. Two Pi is above sub.

  • Sub-woofer Top.

  • Lookin' good! [message #41699 is a reply to message #41697] Sun, 22 June 2003 22:01 Go to previous messageGo to next message
    Wayne Parham is currently offline  Wayne Parham
    Messages: 18791
    Registered: January 2001
    Illuminati (33rd Degree)

    Thanks for posting the pics. I love to see great looking DIY projects come together.

    Great looking cabinet work [message #41700 is a reply to message #41697] Tue, 24 June 2003 03:17 Go to previous messageGo to next message
    wunhuanglo is currently offline  wunhuanglo
    Messages: 912
    Registered: May 2009
    Illuminati (2nd Degree)
    Are you a pro or just good?
    Re: nice job [message #41701 is a reply to message #41697] Tue, 24 June 2003 05:08 Go to previous messageGo to next message
    Sam P. is currently offline  Sam P.
    Messages: 307
    Registered: May 2009
    Grand Master
    Great looking systems! I like the wood grain and natural finish.
    Don't "sweat" the box parameters too much with a sub facing the wall AND a corner, back in the late 50's EV called the technique "phase loading" and it worked quite well up to about 300Hz., and was supposed to go an octave lower than conventional forward facing direct radiators! I use a single EV 15BWK facing a wall, driven by an LM1875 chip amp, even w/o bass boost stuff rattles all over the room during HT use:)

    Sam

    Re: Great looking cabinet work [message #41702 is a reply to message #41700] Tue, 24 June 2003 07:14 Go to previous messageGo to next message
    Chris R is currently offline  Chris R
    Messages: 133
    Registered: May 2009
    Master
    I'm lucky and good with a photo editor. :^) The beauty of
    lower res digital pictures is you can't see the flaws, but
    thanks! All the plywood is home depot specials, but the
    maple trim was a pricey piece I bought on impulse at the
    wood store. I'm glad I did. All this is a hobby for me.
    My wife thinks I'm nuts with the speakers, tolerates the
    WW tools.

    Chris

    great work ! [message #41705 is a reply to message #41697] Tue, 24 June 2003 15:17 Go to previous messageGo to next message
    jeff g is currently offline  jeff g
    Messages: 23
    Registered: May 2009
    Chancellor
    the sub and centre look great!

    i'm thinking of building an ht system with 2 pi towers. could you please provide some more details on construction and wiring (especiall for the centre channel).

    also, do you think the fostex based centre would match with the 2 pis?
    thanks

    jeff g

    Re: great work ! [message #41706 is a reply to message #41705] Tue, 24 June 2003 15:49 Go to previous message
    Chris R is currently offline  Chris R
    Messages: 133
    Registered: May 2009
    Master
    >i'm thinking of building an ht system with 2 pi towers. could you please provide some more details on construction and wiring (especiall for the centre channel).

    For the sub, I used BoxPlot to get the size. PiAlign requested a 10cu
    ft box. BoxPlot wanted something like 20cu ft. I picked 4cu ft
    because the response didn't get wrecked too badly (higher F3), and it
    fit the space. The box was a little tricky to get the angled cuts
    right. The back and the front aren't the same width, so the two pairs
    of side pieces are different also. Gluing and clamping was also
    interesting because of the angles. I glued one pair of sides at a
    time, not all at once. The center is a plain box. The internal size
    is quite a bit smaller than the outsite would imply. It just has
    a couple of partitions to make it right. Again, I used BoxPlot to
    get the size and ports. The finish on both is layers of oil, and/or
    wipe on poly or shellac, and wax.


    > also, do you think the fostex based centre would match with the 2 pis?

    Playing stereo music in faked surroud mode, the center sounds really
    nice. I do have 2 Pi's for left/right. It all seems to match well.

    I built a pair of speakers for the living room that are also Fostex.
    Those are FE207's in TQWT boxes along with a RS piezo. They sound
    nice too. Those were built first, so that's why I stayed with
    the Fostex.

    Chris

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