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    Phase Linear 5100 Digital Tuner

    Lee, The Pioneer PA1001 Ic does indeed look like its become un-obtanium. It appears that US Pioneer no longer has them in stock. Price was around $45-$50 each. This IC was used in a bunch of other Pioneer products (tuners and receivers)...
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    phase linear D 500 right channel LED not working correctly

    I have been working on several Dual 500's lately. The PL-33 pc board was made by "SEIKO AAF". I have never heard of them previously. I did some searching on Google and saw another pc board made by them (for a computer) which said "made in the USA". I will get to my D-500 a little later and see...
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    Phase Linear 5100 Digital Tuner

    Joe, With regard to your issue with the up and down scan buttons, I don't recall ever running into this issue. The "manual" and "auto scan" tuning functions are described on page 15 in the 5100 service manual (see attached pdf). NOTE: The attached pdf is missing scans of the over-sized...
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    New Knobs For Phase Linear Amps

    My friend Mick posted this on Facebook and I had to laugh. "I wanted my amp to be louder. So, I got this new knob. Now it goes to 400 !! It does run a little hot now, but I keep an extinguisher handy. " Another person asked"How does it sound on Broil? Mick responded "depends on how close I...
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    Rare Phase Linear stuff

    McIntosh Clinic Report Brochure. https://web.archive.org/web/20160419073957/https:/www.vintagevacuumaudio.com/schematics-manuals/mcintosh/mcintosh-amplifier-clinic-report-brochure.pdf
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    WTB push button caps

    I have about a dozen or so new old stock black buttons that were used on PRO700's. I also have a dozen or so used (in fair to good condition) silver buttons.
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    phase linear D 500 right channel LED not working correctly

    There are at least (2) versions of the PL33 meter drive board. One each for the Dual 500 and D-500. Likewise, there were (2) different owner's manuals (Dual 500 and D-500). The schematics in the back of these owner's manuals is different. The resolution of the scan is better in the owner's...
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    Phase Linear D-500 LED meter face-plate chemical corrosion damage. Is a fix possible?

    Quickcarl, The sub-front panel from a 700 series II amplifier should work with a D-500. You would have to do some modifications to a 400 series II sub-front panel to get it to work with a D-500. NOTE: The Phase Linear part numbers for a D-500 sub-front panel are not exactly the same as a 700...
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    Phase Linear (Magazine Reviews, Articles, Etc.)

    "Auto-correlation" & the "Phase Linear 4000 Auto-Correlator Preamplifier" (Electronics Today International (UK) November 1975) pgs 17-20 This articles also describes an "A version version of the Auto-correlator which is intended for professional applications...". The "B version is intended...
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    Phase Linear (Magazine Reviews, Articles, Etc.)

    Phase Linear 400 Review (Stereopus Vol 1 No 1 Spring 1975)
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    Paul Klipsch Interview & Magazine Articles

    Room Dimensions for Optimum Listening and the Half-Room Principle by P. Klipsch Room Dimensions for Optimum Listening and the Half-Room Principle by P. Klipsch IRE Transactions on Audio ( Volume: AU-6 , Issue: 1 , January-February 1958 ) Page(s): 14 - 15...
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    Paul Klipsch Interview & Magazine Articles

    Loudspeaker Developments by P. Klipsch Loudspeaker Developments by P. Klipsch Transactions of the IRE Professional Group on Audio ( Volume: AU-1 , Issue: 3 , May-June 1953 ) Page(s): 16 - 22 https://ieeexplore.ieee.org/document/1162286
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    Paul Klipsch Interview & Magazine Articles

    New Notes on Corner Speakers by Paul W. Klipsch (FM and Television Aug 1949) New Notes on Corner Speakers by Paul W. Klipsch (FM and Television Aug 1949) see pages 25, 26 and 28 http://www.itishifi.com/2018/10/new-notes-on-corner-speakers-paul-w.html NOTE: Not yet available on...
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    Paul Klipsch Interview & Magazine Articles

    A High Quality Loudspeaker of Small Dimensions by Paul W. Klipsch A High Quality Loudspeaker of Small Dimensions by Paul W. Klipsch The Journal of the Acoustical Society of America Volume 17 Number 3 January 1946 pgs 254-258 https://asa.scitation.org/doi/10.1121/1.1916326
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    Paul Klipsch Interview & Magazine Articles

    A Note on Acoustic Horns by P.W. Klipsch A Note on Acoustic Horns by P.W. Klipsch Proceedings of the IRE ( Volume: 33 , Issue: 7 , July 1945 ) Page(s): 447 - 449 https://ieeexplore.ieee.org/document/1696884
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    Paul Klipsch Interview & Magazine Articles

    Eight Cardinal Points in Loudspeakers for Sound Reproduction by Paul W. Klipsch Eight Cardinal Points in Loudspeakers for Sound Reproduction by Paul W. Klipsch IRE Transactions on Audio Volume AU-9 No. 6 November-December 1961 http://207.67.68.51/forums/storage/4/1363403/PWK8Cardsml.pdf
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    Paul Klipsch Interview & Magazine Articles

    How To Get Best Results From A Klipschorn by Paul W. Klipsch High Fidelity Summer '51 How To Get Best Results From A Klipschorn by Paul W. Klipsch (High Fidelity Summer 1951) see pages 10-14, 80 https://www.americanradiohistory.com/Archive-High-Fidelity/50s/High-Fidelity-1951-Summer.pdf
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    Paul Klipsch Interview & Magazine Articles

    Design of Audio-Frequency Amplifier Circuits Using Transformers by PW Klipsch Design of Audio-Frequency Amplifier Circuits Using Transformers by PW Klipsch Proceedings of the Institute of Radio Engineers ( Volume: 24 , Issue: 2 , Feb. 1936 ) Page(s): 219 - 232...
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    Paul Klipsch Interview & Magazine Articles

    Suppression of Interlocking in First Detector Circuits by P.W. Klipsch Suppression of Interlocking in First Detector Circuits by P.W. Klipsch Proceedings of the Institute of Radio Engineers ( Volume: 22 , Issue: 6 , June 1934 ) https://ieeexplore.ieee.org/document/1685662
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    Paul Klipsch Interview & Magazine Articles

    Electron Coupled Oscillators by Paul W. Klipsch (December 1933) Thesis Paper Electron Coupled Oscillators by Paul W. Klipsch (December 1933) Thesis Paper https://2d73e25b29782b6d6766-9c8af5cbfef16739445bc76457060528.ssl.cf2.rackcdn.com/331200_PWK_Thesis_-_Stanford_635110475185910000.pdf
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