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  1. JBL Energizers etc

    Hi Teun,

    You have asked a LOT of questions. I will try to address at least some of them.
    The Energizers without an "S" suffix were earlier amps that used germanium transistors, sounded...
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    T-Circuit patent

    Couldn't let the quip about 'apparently didn't convince the patent office' in post#20 go. Bart Locanthi was awarded U.S. Patent # 3428908A in 1969 for the circuit widely known as the "JBL...
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    21,080

    I was aware when I posted that it was an old...

    I was aware when I posted that it was an old thread. Couldn't help myself, I just hate it when the last post on a topic is as ridiculous as that one was.
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    The comment about 'the reggae guys' is...

    The comment about 'the reggae guys' is ridiculous. First off only a couple hundred were built from '68 to '71. Nothing that rare can be "as common as a DC300" by definition. Also it's unlikely he...
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    The name is The Mastering Lab, not Master Lab and...

    The name is The Mastering Lab, not Master Lab and they are now located in Ojai California (formerly Hollywood). It might be worth a call, but I don't think they have been involved with speakers...
  6. My friend tried adding an 075 (consumer version...

    My friend tried adding an 075 (consumer version of 2402) to an S7 back in the 60s. I heard the before and after. Problem is an 075 doesn't add much extension over the LE85 (like the 2420). It was...
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    20,848

    I don't know where you get the idea that 16hz is...

    I don't know where you get the idea that 16hz is so impossible to reproduce. I have JBL 2245 18" woofers in my system and they reproduce 16Hz beautifully. Maybe an 8" can't do it at any reasonable...
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    44
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    20,848

    You have to define what "bad" is. A vintage...

    You have to define what "bad" is. A vintage McIntosh or Marantz tube amp measures pretty good and sounds great. Usually around .1 percent distortion until you get up to full power. (And then maybe...
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    correction

    Someone pointed out to me that the second stage is also single ended, only the drivers and output are complementary. My mistake for not checking the schematic before I spoke. It's still a hell of an...
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    OCS does great work. I have used them for...

    OCS does great work. I have used them for recones. But you can just buy the diaphragms for your LE175s from them and put them in yourself. I takes care, but isn't magic. I have been doing it for...
  11. Caps in parallel add. A cap in series REDUCES...

    Caps in parallel add. A cap in series REDUCES the capacitance, which would raise the cut off frequency. -Less bass through the driver. May or may not help the problem. It will reduce the...
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    Forgot to comment...EMTs are making a comeback,...

    Forgot to comment...EMTs are making a comeback, I'm glad to say. I still have an Ecoplate 2 which I love. Plates still sound better to my ear than any digital reverb I have heard. Who cares if...
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    Wow! Thanks for that link, Herki! Such great...

    Wow! Thanks for that link, Herki! Such great history. I glanced at it and will go through it in depth when time permits. I already knew quite a bit about the early Ampex history. I would like to...
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    Very interesting. I have never seen a gold one...

    Very interesting. I have never seen a gold one before. I have a fairly early sa660 and it has the greenish sa600 chassis rather than the later gray
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    Jensens are about the best transformers you can...

    Jensens are about the best transformers you can buy, and outperform active circuitry in many cases. They have better frequency response and lower distortion than most of the transformers out there. ...
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    LE8

    There were several versions of the LE8 used in JBL systems which were unpainted, used solder terminals instead of push terminals and had no serial/ID tag...obviously to save cost. As far as I know...
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    Geeeez guys! The 7 is the preamp, the C is the...

    Geeeez guys!

    The 7 is the preamp, the C is the box. (C for console) Unlike tube cages etc., you either bought a naked 7, or a 7 in console, and they called it a 7C.

    Best,

    Old Timer
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    Ampex model 200?

    I've never heard of a Model 2 and I have "been around the block". Unless you are referring to just the electronics module I think you mean a Model 200. And yes, it ran 30ips, using the unique Ampex...
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    IMHO the SA600 660 and SE400S "T-Circuit amps"...

    IMHO the SA600 660 and SE400S "T-Circuit amps" are among the best sounding low power amps ever. They were designed by Bart Locanthi and were light years ahead of their time. They bare no...
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    about HDCD...

    Hi,

    I have been mastering CDs in the HDCD format for over 10 years. Many are on the Audio Fidelity label. It is not a lie or a scam. The process was developed in part by Keith Johnson of...
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    I didn't start the discussion, Don did. See...

    I didn't start the discussion, Don did. See post#7 below
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    gold records

    In response to HJ James:
    NO! A gold record is issued by the RIAA for certified sales of 500,000 units of all release-formats combined. Platinum is 1,000,000. Anyone involved in the creative process...
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    Big Reds and The Mastering Lab

    Just to clear up one misconception...
    The Mastering Lab did NOT use 604s for mastering monitors. I have seen this repeatedly on the web. They had three-way systems with dual Altec woofers (not sure...
  24. bond theme composer

    The "surf" theme as it was called here is actually credited NOT to John Barry but to Monty Norman. There was some contention between Barry and Norman as to who actually wrote it, but it has been...
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    Must be a very early one. I have never seen one...

    Must be a very early one. I have never seen one with only the LE15 (no PR) and no cut outs for 075 or N7000 or SE408 energizer. The energizer didn't come out 'til 66 so it's obviously before that.
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