Do It Yourself - DIY

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  • How To: Export Impulse Response from REW for use in VituixCAD (prior to 2.0.98.6)

    • Created by: Reet
    • Published: 25 December 2022, 17:11 Sunday
    • 685 views
    • 5 comments

    How To: Export Impulse Response from REW for use in VituixCAD (prior to 2.0.98.6)

    Update: Since VituixCAD 2.0.98.6, exporting IR using windowing as described here is no longer required. the impulse response can be exported directly, make sure to uncheck "normalize" on export. VituixCAD will automatically set "skip samples" to 1m (2.907ms) prior to the start time of the exported impulse response to maintain correct timing on import.

    REW can export the measured impulse response directly as MLSSA formatted text file, which can be used within the...
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    Last edited by Reet; 14 January 2023, 16:06 Saturday.

  • Noobster build with Piano Black How To

    • Created by: kevinm
    • Published: 22 July 2016, 08:07 Friday
    • 2178 views
    • 31 comments

    Noobster build with Piano Black How To

    For the piano black finish.....get ready. This is quite a bit of work. Made MUCH easier with the right tools...but is a bit of bear regardless. Total time took over a month for me including all my orders/lessons learned/and actual finishing. With a second go-round, I bet I could do it over 3-4 weeks only working on weekends. Biggest part is drying time. Figure a day for final sanding/polishing/installing components for the pair.

    I tried to do it the poor man's way, but it was exhausting...
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    Last edited by theSven; 29 April 2023, 05:51 Saturday. Reason: Update image location
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  • Breaking with modern conventions - a highly musical 2-way system using an 8" woofer
    by theSven
    By Jon Hancock

    This article will describe the fruits of my efforts to build a moderate sized speaker which might be moderately above average in performance for a basic two-way system. I desired a speaker like this both for my own use in secondary systems, and to fill a need for some friends, who desired fairly full range response (i.e., “it’s gotta have good bass”). Also, though I have access to a good wood shop, many potential DIY enthusiasts may not, so I hoped to use a modified...
    31 December 2024, 17:31 Tuesday
  • Cult of the Infinitely Baffled
    by theSven
    IB- F.A.Q.
    1)What's an IB?
    For purposes of this forum, an Infinite Baffle is a alignment where the drivers are free-air mounted, in a space adjacent the listening room. They fire into the listening area through a common opening between the two areas. This can be the attic, basement, or any room with shares a common wall with the listening area.

    2)Which space is best?
    Any space that provides a mounting location for the baffle, offers adequate volume for the IB, and    ...
    15 December 2024, 12:17 Sunday
  • How to: Measure with REW for Room EQ
    by Reet
    REW is a powerful tool, as is EQ, but getting it right can be challenging. The first step to achieving a good EQ profile for your space is to take in-room measurements. This document will detail an easy method to achieve quick and reliable results.

    For room EQ, a single measurement at your listening location will not produce a good depiction of the overall room response. An average of many measurements around the listening area should be completed to create a room response for equalization...
    12 April 2023, 10:42 Wednesday
  • Minimum Phase and Accurate Crossover Simulation
    by Reet
    Minimum phase for a speaker can be described of the phase of the frequency response of the speaker at it’s acoustic centre, or the phase without any excess phase or “time of flight” included. It can be calculated from the speaker’s frequency response using Hilbert-bode transform, or HBT. When comparing multiple minimum phase responses, we can say that the responses occur at the same point in space, ie. there is no physical distance between them. When measuring speakers and processing the...
    26 December 2022, 14:27 Monday
  • How To: VituixCAD Extended Impedance Model For Any Driver
    by Reet
    Loudspeaker T/S often includes only a single Le value for inductance, however driver motors are usually much more complex than a single coil of wire, so Le on its own is not a very good description of the driver characteristics. An extended impedance model, or “semi-inductance” model can provide additional characterization of the impedance curve for greater accuracy.

    Many Scan-Speak drivers include this data in the “advanced parameters” section of their datasheets, however the...
    26 December 2022, 14:07 Monday
  • How To: Measuring impedance and T/S with ARTA/LIMP
    by Reet
    With a simple jig, loudspeaker impedance and T/S parameters can be easily measured with LIMP. The same jig may also be used to measure component value for resistors, capacitors, and inductors, as well as measure transfer functions of passive and active filters.

    The setup is quite simple, the following diagram is taken from the LIMP manual:
    https://artalabs.hr/download/LIMP-user-manual.pdf
    Measurement Jig ​


    This instruction is following what is in...
    26 December 2022, 14:02 Monday
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