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    Late reply, but... For example, 8500 Hz ...

    Late reply, but...

    For example, 8500 Hz

    7,000 Hz divided by 8500 Hz = 0.8235
    0.8235 x 1.5 uF = 1.2352 uF
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    Dow & GE make electronics grade RTV which avoids...

    Dow & GE make electronics grade RTV which avoids the potential damage caused by the acid curing chemicals.
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    I remember reading an article regarding possible...

    I remember reading an article regarding possible formats that were being considered for use in the upcoming manufacture of the "digital compact disc". Under consideration at the time, but...
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    +1 Ken saved my day in 1989

    I was in the Ontario Ca. area one weekend in 1989 for a "screen test" to determine whether a friend's group from the area would want to have me do some session work with them. It was all good until...
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    ODDBALL 4312xxxx VERSION and 035 DERIVATIVE?

    I was looking at some original JBL documents (basic description, data sheets, technical manuals) for the 4312 series of control monitors at this excellent and quite extensive Australian pro sound...
  6. Source for obsolete and newer JBL Pro data sheets, manuals

    Found an unexpected source for JBL Pro products information While doing a bit of recreational web surfing recently,...
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    That is just fabulous wood. What kind is it, and...

    That is just fabulous wood. What kind is it, and where did it come from? I've never seen any loudspeaker that looked so good.
  8. Found an unexpected source for JBL Pro products

    While doing a bit of recreational web surfing recently, I stumbled across a website with many owners' manual, data sheets, and even a few service manuals. I think this company is located somewhere in...
  9. I would start with watching this tutorial on operational amps

    Op amps aren't particularly hard to design with, but you need to start out by leaning the rudiments. This is a good starting point:
    https://www.youtube.com/watch?v=7FYHt5XviKc&t=34s
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    This one is an easy fix. Late post, but...

    Belated Greetings,
    All you would need to do is reverse the pair of wires going to the woofer, since the woofers are the only component that have been changed. I suggest that you listen to the...
  11. Thread: WTF

    by Doctor_Electron
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    4,752

    I suspect the missing mass might well have...

    I suspect the missing mass might well have consisted of some special grade of blue magic smoke (or possibly even magic smoke of some other color, ?), blended with extra virgin snake oil, species not...
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    Drew daniels' snake oil recipes

    While rummaging through some old files I've had squirreled away for ages, I came across this handy cookbook that is still currently online at the Late, Great Drew Daniels' Sound Path Labs website....
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    3107 Inductor DCR

    This is an interesting thread. Much to learn.
    I understand the basics as to how the DCR of an inductor affects the Q of that pole, and how it can be used to manipulate the steepness of its...
  14. Thread: WTF

    by Doctor_Electron
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    4,752

    Fruit of the Loon

    OK, I kind of get how various verbal descriptions of a system's sonic characteristics might describe how it actually sounds, such as neutral, forward, warm, etc. But I am pretty much at a loss as to...
  15. They know what it is you want to know

    Another place, great forum with great people...
    https://antiqueradios.com/forums/index.php
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    You've got a fun project going there. I would...

    You've got a fun project going there.
    I would like to mention a sometimes overlooked electrical value pertaining to the inductors used in "clones" of JBL professional crossover networks.
    The DC...
  17. Quoting markd51: "It was a sound you were drawn...

    Quoting markd51: "It was a sound you were drawn to, and you wanted to hear."

    Yes they were hot and exciting. But there were exceptions...

    There was a guy (back in the Party Till You Puke)...
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    Special Secret diaphram tweak

    I am certain that I read here about a step in the production of ring radiators that one of the experienced assemblers developed a simple adjustment, (with a pencil?) on the diaphragms that allowed...
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    Yes, ha ha ha

    Napoleon XIV, They're Coming to Take Me Away "They're coming to take me away ho ho hee hee ha ha"

    Beatles, I am the Walrus "don't you think the joker laughs at you? Ho ho ho he he he ha ha...
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    As far as technologies, topologies, and power...

    As far as technologies, topologies, and power output ranges go, I think there are great and not so great amplifiers of every type.

    I've had many highly regarded amps, and I can tell you two that...
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    John Jorgensen Howard Roberts Louie...

    John Jorgensen

    Howard Roberts

    Louie Shelton

    Martin Taylor

    And so on...
  22. How to put the kabosh on those popping dialog boxes?

    Hello, I was off the forum for a bit over a year, and don't remember If I these boxes were in place back then
    I'm talking about large text(?) boxes with black background that pop up when my mouse...
  23. Probably mail-ordered cabinets

    Back when those drivers were new, quality empty cabinets were available from outfits such as Allied, Lafayette, Olson, Burnstein-Applebee, and probably others.

    The mounting of the bullet tweeter...
  24. Powerd LSR types - What is the quality and sound of the built in amplifiers?

    Interested...
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    That has been a hard and fast rule in JBL...

    That has been a hard and fast rule in JBL authorized service since "day one".
    To be authorized is not a trivial matter. I worked for an authorized shop 20 years go. The owner had his contract...
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