Search:

Type: Posts; User: jack_bouska; Keyword(s):

Page 1 of 4 1 2 3 4

Search: Search took 0.12 seconds.

  1. when did jbl merge with selenium? see www.jblselenium.com

    Has anyone heard of JBL or Harman merging with (or buying) the Brazilian Selenium loudspeaker company.
    I visited my local JBL Pro-sound distributor to discuss purchasing some raw drivers, and he...
  2. TnV1N34P1

    manage attachements not working for me at the moment, please stand by
  3. JBL Tech Note Vol 1 No 34 Differential Drive for VerTec Subwoofer Applications.

    I found a PDF version of this JBL tech note (Vol 1, No 34) while searching the web. It is not available on the JBL pro website, so I thought it might be of interest to other forum readers if I post...
  4. Replies
    12
    Views
    5,566

    Early passing of a Mentor, Inventor and consummate Communicator

    I learned of Drew's early demise only today, when I visited his website and saw the announcement of his unexpected death.

    Drew Daniels was, and will remain, the single greatest influence on my...
  5. Replies
    368
    Views
    217,362

    To see the latest version of my six way volume...

    To see the latest version of my six way volume control, go to post numbers #31 and #34 of the "big blue" thread (link below):
    ...
  6. Replies
    230
    Views
    186,753

    Mcintosh & Jbl Everest room By: subsoniq, posted on microsoft photosynth

    ok - back to the links with pictures of horns, this time some JBL to drool over

    http://photosynth.net/view.aspx?cid=65e2671d-3f3d-401d-9da1-d5ee78fe573b

    3D view of dealer showroom...
  7. Replies
    368
    Views
    217,362

    twofer

    I use a rs485 network cable to daisy-chain the two dcx's so that I can simultaneously control them both from my laptop.
    Unfortunately, I cannot individually address the dcx's to vary the setup on...
  8. Replies
    368
    Views
    217,362

    dcx2496 remote

    I have been using DCX-Remote software, with a null modem cable, to control two DCX2496's in five-way crossover configuration for several years now.
    The music does not get transmitted, only some of...
  9. Replies
    82
    Views
    38,382

    Same time next year

    I was recently privileged to be selected as the 2009 distinguished lecturer by the Society of Exploration Geophysicists, and I spent the first half of this year visiting a few dozen cities spread...
  10. Replies
    23
    Views
    12,637

    Foaming at the mouth

    Bad news, It turns out I'm in the market for a refoam kit as well.
    After two years of baking in the heat in their new home in Muscat, Oman (where the outside temperature can top 50degree C), the...
  11. Replies
    230
    Views
    186,753

    Technique for turning waveguides or circular...

    Technique for turning waveguides or circular axially symmetric horns on a lathe is the same for any type of template driven wood turning.
    1) mount stock and shape to circular
    2) rough out outside...
  12. Construction of the "Impact Stack" post 2 of 2

    Post number two (of two)
    The pictures are numbered and captioned, and should be mostly self explanatory. If you have specific questions, or want more info related to some aspect of the process, you...
  13. Construction of the "Impact Stack" post 1 of 2

    Thanks for the feedback, I hope my comments on system philosophy and horn design will be of some use to you in your speaker building projects.

    Also, apologies to the Lansing heritage membership...
  14. Replies
    42
    Views
    16,955

    measurments

    The difference in spectral tilt could be caused by one or more of:
    1) nearfield vs. farfield differences, the smith horn mouth is a diffraction slot in the vertical dimension, and you may need to...
  15. Thread: Big Blue

    by jack_bouska
    Replies
    55
    Views
    38,493

    What's the vertical & horizontal scales on the...

    What's the vertical & horizontal scales on the green RTA display? (Hz and dB/div)

    On axis?
    how far from the boxes?
    how do the curves look off axis?

    as mentioned in an earlier post, the...
  16. Thread: Big Blue

    by jack_bouska
    Replies
    55
    Views
    38,493

    volume control options

    I dug out a sample of one of the dual gang pots that I am using, and had a look at the manufacturers name, they are listed as NMEG (see photo below).

    These are fairly expensive, see maplins...
  17. Thread: Big Blue

    by jack_bouska
    Replies
    55
    Views
    38,493

    I built up a 12 gang log pot by dismantling 12...

    I built up a 12 gang log pot by dismantling 12 dual potentiometers and re-assembling the pieces so that they all connect together to form a single very long multi-ganged potentiometer. Tracking is...
  18. Replies
    91
    Views
    88,161

    Link to Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides thread

    I have completed my long reply to the questions from Ian Mackenzie and Rob H, and have placed these in a new thread called:
    Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides...
  19. Construction details and flare contour graphs for...

    Construction details and flare contour graphs for 1" and 2" axially symmetric oblate spheroid waveguides are available on my thread: DIY Axially symmetric oblate spheroid CD waveguides, in solid Oak...
  20. Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides (Part #9 of 9)

    (This is the last post in this 9 part series, if you jumped to this thread here at the end, please go to the top and read all 9 parts in series, for continuity.)

    What about CD above 10 kHz:...
  21. Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides (Part #8 of 9)

    Diffraction aperture dimensions:
    Rapid throat flare rate is a necessary, but not a sufficient condition for wide angle, high frequency diffraction, as the diffraction aperture must also be...
  22. Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides (Part #7 of 9)

    Horn wall shape:
    Straight sided waveguides are fundamentally different from traditional flared horn contours. Imagine the layers (skins) of an onion represent the isophase acoustic wave fronts...
  23. Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides (Part #6 of 9)

    Why CD?
    My original interest in smooth power response was motivated by a series of articles which appeared over a number of years during the 1980’s, in an obscure Canadian magazine called Audio...
  24. Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides (Part #5 of 9)

    Mouth termination in commercial horns and waveguides:
    Commercial horns and waveguides may also suffer from physical constraints associated with the need to be economical in terms of front baffle...
  25. Factors Affecting Sonic Quality of Mid & HF Horns & Waveguides (Part #4 of 9)

    Horn-Honk measurements and calibration:
    To help entice everyone to give this a try, I have decided to do the experiment for you, (just this once), in such a way that I can measure, and graphically...
Results 1 to 25 of 83
Page 1 of 4 1 2 3 4