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    I'm specifically looking for the Mastering Labs...

    I'm specifically looking for the Mastering Labs Crossover alterations between the Big Reds and Super Reds. The Mastering Labs crossovers I picked up last week have and extra set of leads for a second...
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    Going further down the rabbit hole I'm looking...

    Going further down the rabbit hole I'm looking for any internal pictures of a Crossover for Super Reds. The resistor not in these could easily be omitted with an extra woofer since the HF would not...
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    So I finally came up with a pair of...

    So I finally came up with a pair of Audiotechniques Inc. Mastering Labs crossovers.

    Based on a few measurements and tracing my way through the units I can say pretty certainly the schematic that...
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    One of these days I'm going to spring for a...

    One of these days I'm going to spring for a proper Eames/Herman Miller lounger. Until then the Poang will do. I am due to replace the cushions again... Should probably get leather.

    eso
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    My space is small. It's practically a giant pair...

    My space is small. It's practically a giant pair of headphones. Listening position is approx 12' from the voice coils in the main arrays.

    Here's a picture ot a friend and master craftsman from...
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    All of the Ed Long TA Networks for Urei used all...

    All of the Ed Long TA Networks for Urei used all the chokes and caps...

    These are Urei circuits for:
    811A (604 8K Ferrite)
    original 813 (604 8G + helper Woofer)
    811B (PAS 1580CX + JBL 2425)
    ...
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    I thought I had a DownBeat article with more...

    I thought I had a DownBeat article with more comprehensive test traces, but I can't find it right now.

    In the examples below even though not stated I'd guess the competitors' are a stock 604 and a...
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    Those are one of my projects, currently residing...

    Those are one of my projects, currently residing in one of my son's rooms...

    eso
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    Here's a page from a 1977 Urei catalog showing...

    Here's a page from a 1977 Urei catalog showing pulse and square wave traces...

    I see my super Urei monitors linked again a couple pages back too.

    And I also posted a new pair of 615B drivers...
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    [QUOTE=Ian Mackenzie;446898] Bill is a...

    Bill is a brilliant man.

    When we first started experimenting with the conical horns Bill had cast some of his throats for the Cogent drivers (their throat is a unique size, ~2.7"). But using...
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    [QUOTE=Ian Mackenzie;446889]Hi Rob, Here...

    Being fully adjustable was a primary requirement for the Cogent main arrays.

    Early on Rich and I worked on locating the balance points of each horn/driver assembly and mounting those assemblies...
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    The horns are conical and are based on a design...

    The horns are conical and are based on a design from Bill Woods. Both the mid and midrange horn original designs are the same as used by ΩMA in their system with a Cogent mid range.

    However Rich...
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    Some details on the construction of my room......

    Some details on the construction of my room... The bass horn mouths include irregular surfaces to break up any mid and high frequency reflections. Also, the while it looks like the equipment racks...
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    I'd love to take you up on that some time. I'm in...

    I'd love to take you up on that some time. I'm in Long Beach. Conversely, you could have a listen to my system as well.

    Regarding your comments about processing for time aligning horns I'll...
  15. It's a black urethane resin. Have to pot them in...

    It's a black urethane resin. Have to pot them in several small lifts to keep from creating too much heat. Used mailing tubes for the forms.

    eso
  16. Abbey Road Style monitors: Altec 612 cabinets/615B drivers

    I almost built something without extreme mission creep... Almost.

    The idea was to build a quick pair of 612 cabinets for some 615B drivers (605 with different horn marketed as a ceiling mount)....
  17. Thread: What's Playing Now

    by eso
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    6,840,169

    Molly Tuttle & Golden Highway: City of Gold, Crooked Tree

    I December my wife and I had the privilege of seeing rising star of a new Bluegrass movement in the tiny Troubadour in West Hollywood.

    Molly Tuttle had been building a name as an amazing...
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    Really, I can read... I just now realized that...

    Really, I can read... I just now realized that this is asking for the 811B–830 network...

    Here's a clearer copy:



    eso
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    DOMI and JD Beck

    And these two kids and absolutely stratospheric. You can find videos of here doing recitals of Franz Liszt works when she was only 14. And now working multiple keyboards and a full rack of bass...
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    This video from the Big Ears Festival is great. I...

    This video from the Big Ears Festival is great. I saw them at a small/mid size venue in Los Angeles a couple yers ago and they were great.

    Tenor Sax Shabaka Hutchings is also involved is several...
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    Here's a parts list I did years ago for the 840...

    Here's a parts list I did years ago for the 840 (813B) network.

    In the '00s I did verify this with the former JBL archivist. I think his name was Everett. He was a good guy.


    eso
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    New wave of Jazz from eastside London

    There's a whole scene happening, much coming out of London. My 16 year old son has turned me on to several new artists.

    If you ever have an opportunity to see Sons of Kemet, do so. They are great...
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    I don't believe that is the case. My...

    I don't believe that is the case.

    My understanding is that the Urei monitor cabinets area designed as Aperiodic vents. The cabinets are over stuffed and the vents are primarily sized to silently...
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    Here's the parts matrix for the Urei models, and...

    Here's the parts matrix for the Urei models, and a partially cleaned up schematic for the 840 network for 813B monitors.

    There are significant differences in the time correction between each...
  25. Thread: TAD 2404 Build

    by eso
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    How did I miss this one? I've got the parts and...

    How did I miss this one? I've got the parts and planning to build a pair of 2401/TSM-1 monitors...

    I'll need to come back when I have more time...

    eso
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