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    https://el34world.com/Forum/index.php?topic=14511....

    https://el34world.com/Forum/index.php?topic=14511.0
    Haynes Jazz King II

    https://el34world.com/Forum/index.php?topic=15230
    Haynes Jazz King II Output Board / Update Success!
    ...
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    13,353

    Sticky: Acoustic 117, 118 schematic

    https://www.eserviceinfo.com/downloadsm/69430/Acoustic_117,%20118.html
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    552

    Your other Ampegs from that era, do they have +...

    Your other Ampegs from that era, do they have + HV rectifier with tube or solid state.
    Recommendation for + HV rectifier with tube


    The assumption is that in your '69 Ampeg B15NF output tubes...
  4. https://music-electronics-forum.com/showthread.php...

    https://music-electronics-forum.com/showthread.php?t=50811
    Zeppelin ZDL Percolator 2W
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    1
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    176

    https://www.youtube.com/watch?v=cQSz1kjnzlo...

    https://www.youtube.com/watch?v=cQSz1kjnzlo
    The Percolator DIY Amplifier Instructional Video - Part 1(Electronics)

    https://www.youtube.com/watch?v=WcsOB8xGQKg
    The Percolator DIY Amplifier...
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    1
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    176

    Zeppelin ZDL Percolator 2W

    Schematic "ZDL Percolator 2W" is drawn on basis of various photos from internet type Look "Under the Hood"
    Based on my 35 years engineering experience, I tried on basis of photos to find common...
  7. Replies
    93
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    54,643

    Sticky: Fender Fuzz-wah 2 (1970)

    https://www.scribd.com/doc/273872269/Fender-Fuzz-wah-2-1970-Schematic
    You must log in or sign up
  8. https://www.zeppelindesignlabs.com/wp-content/uplo...

    https://www.zeppelindesignlabs.com/wp-content/uploads/docs/Zeppelin_Perc_ASSEMBLY%20INSTRUCTIONS.pdf
    Percolator 2 Watt Tube Amp
    ...
  9. https://www.tube-town.de/ttforum/index.php?topic=2...

    https://www.tube-town.de/ttforum/index.php?topic=20207.0

    https://www.tube-town.de/ttforum/index.php/topic,20207.msg206992.html#msg206992
    You must log in or sign up
  10. https://www.instructables.com/id/The-Percolator-2W...

    https://www.instructables.com/id/The-Percolator-2W-Guitar-Harmonica-Tube-Amp/

    https://www.youtube.com/watch?v=cQSz1kjnzlo
    The Percolator DIY Amplifier Instructional Video - Part 1(Electronics)
    ...
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    10
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    239

    You're bad luck with your Sunn...

    You're bad luck with your Sunn
    https://music-electronics-forum.com/showthread.php?t=45400

    Disconnect red and black cable from reverb tank.
    1. Check that connectors on cables and reverb tank. If...
  12. https://music-electronics-forum.com/showthread.php...

    https://music-electronics-forum.com/showthread.php?t=44736
    Vox Essex Bass Grounding Question
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    8
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    297

    If compare schematic for 5b6 and 5e6, you can see...

    If compare schematic for 5b6 and 5e6, you can see that is error when drawing layout for 5b6.

    https://el34world.com/charts/Schematics/files/Fender/Fender_bassman_5b6_schem.pdf...
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    93
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    54,643

    Sticky: Fender - Fuzz Wah ( 1st edition )

    https://freestompboxes.org/viewtopic.php?f=19&t=11078

    https://freestompboxes.org/download/file.php?id=13391
    Schematics

    https://freestompboxes.org/viewtopic.php?f=19&t=11078&start=20#p192395...
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    367

    Irritating distortion can produce old, weakened...

    Irritating distortion can produce old, weakened power tubes 6973. If you are able replace them first.
    Before checking value passive components, first check tube dc voltage readings (pin1-3; pin6-8).
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    367

    http://www.verntisdale.com/schemami.html...

    http://www.verntisdale.com/schemami.html

    http://www.carlhaines.com/jukebox/manuals/#ami

    http://arcarc.xmission.com/PDF_Jukebox/Rowe_AMI/
    ...
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    295

    https://jedistar.com/prince-amplifier/...

    https://jedistar.com/prince-amplifier/
    Prince Amplifier Tsushinkogyo, Nagoya Japan

    http://audiotools.com/en_mi_dead_p.html
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    410

    Yes. F/B (feedback) when Boost is on, resistor...

    Yes.
    F/B (feedback) when Boost is on, resistor R15 (2k7) is connected in parallel with resistor R14 (2k7)
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    8
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    410

    Yellow wire from S103 to power amp PCB 170079 ...

    Yellow wire from S103 to power amp PCB 170079
    Black/white wire from S103 to gnd of power input jack

    57301

    1) correction

    57303
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    8
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    410

    https://music-electronics-forum.com/showthread.php...

    https://music-electronics-forum.com/showthread.php?t=40939

    http://www.ampix.org/albums/userpics/10075/Acoustic_220_service_manual.pdf
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    257

    https://supportloudtech.netx.net/loud-public/#cate...

    https://supportloudtech.netx.net/loud-public/#category/11317

    https://supportloudtech.netx.net/loud-public/#category/11321

    https://elektrotanya.com/showresult?what=mackie
    ...
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    265

    About Ampeg PF500

    https://music-electronics-forum.com/showthread.php?t=40836

    https://music-electronics-forum.com/showthread.php?t=30152

    https://music-electronics-forum.com/showthread.php?t=39943
    ...
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    4
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    242

    https://www.uploadarchief.net/files/download/hk%20...

    https://www.uploadarchief.net/files/download/hk%20vs250.jpg
    https://www.circuitsonline.net/forum/view/97576
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    5
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    197

    http://chiclassiccomp.org/docs/content/other/Radio...

    http://chiclassiccomp.org/docs/content/other/RadioShack/42-2930_SolidStateStereoPreAmp.pdf

    https://audiokarma.org/forums/index.php?threads/inexpensive-phono-pre-amps.829937/page-2

    57281...
  25. Troubleshooting musical instrument amplifiers

    57248
  26. Power amp Crate BX50 works in bridge schematic, ...

    Power amp Crate BX50 works in bridge schematic, jacks J3 (ext spkr) and J4 (phones) MUST be isolated, ie they must not have any direct contact with the chassis.
    Check switch contacts on J3 and J4...
  27. https://music-electronics-forum.com/showthread.php...

    https://music-electronics-forum.com/showthread.php?t=48629
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    126,582

    Sticky: Vox AC30S1

    https://www.manualslib.com/download/1568461/Vox-Amplification-Ltd-Ac30s1.html
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