Roy Cox
Roy Cox
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Tube Amp Maintenance For Beginners
In this video I’m showing you how to do basic tube amp maintenance which includes biasing the power tubes, cleaning tube sockets, tightening jack nuts, lubricating potentiometers and basic visual inspections. Necessary tools are highlighted and discussed to make maintaining your tube amp affordable, safe and easy!
Tools used in video:
DeOxit 5 - www.amazon.com/Hosa-D5S-6-DeoxIT-Contact-Cleaner/dp/B00006LVEU/ref=sr_1_2?crid=383EV4D1UHT3V&dib=eyJ2IjoiMSJ9.WWYV76T4o0F4opwdowjH08YCOcsYf27fbtxw9kF7FMCID_Bcox8XA99c0j0aqksKrpuitKyPtqhIHnNlOId90BQQa0iSuLpcwVsIF6d7CEU0Uk3VnShCkC555hd-PExoj0HHCBkXbv1f0bH540P4cVU_BKn9j_t01C8UvbwdXd_6ADajAV5nhBRNjgjIu8sFX3pXZ6skXi3EHbHA3r7wDYMgRF5prtai6S9MtjdzvTnSrtjfzFZS4wrwNvfR1KbXh-5_njzCYcQOMEiJwHQHfrv1uHuKB8KgOea5i8tAM4c.CB90WkGZUl7HNSg1fV9tmhjOmg9FWJ-NPotOjaOY6lg&dib_tag=se&keywords=De%2Boxit&qid=1712354283&sprefix=de%2Boxit%2Caps%2C113&sr=8-2&th=1
Snufferstick - www.stewmac.com/luthier-tools-and-supplies/tools-by-job/tools-for-electronics/amplifier-tools/snufferstick-high-voltage-discharge-stick/
Electricians Micro Screwdriver Set - www.harborfreight.com/6-piece-electricians-micro-screwdriver-set-96075.html
Electricians Regular Screwdriver Set - www.harborfreight.com/electricians-screwdriver-set-7-piece-69075.html
Astro AI Digital Multimeter - www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwiI0O6YjKyFAxXwXEcBHQH5BaQYABAyGgJxdQ&ae=2&gclid=EAIaIQobChMIiNDumIyshQMV8FxHAR0B-QWkEAAYASAAEgJwHfD_BwE&ohost=www.google.com&cid=CAASJuRoQgosNoP6jPgesoL_wXXVyUJ0QrUzeln7UeE_04FXDHGkmOL1&sig=AOD64_3q_ZIA_MYJiLqHa0aPNFFQJKlHYQ&q&adurl&ved=2ahUKEwjqtOeYjKyFAxVAE1kFHWd0Aq8Q0Qx6BAgHEAE
SRS Dual Bias Probe - reverb.com/item/24983689-dual-bias-probe-tool-tester-for-biasing-tube-amp-amplifier-srs-made-in-the-usa?
Dills Pipe Cleaners - www.amazon.com/Dills-Daily-Tobacco-Pipe-Cleaner/dp/B00BI3FLWA
Music Nomad Amp & Case Cleaner - www.sweetwater.com/store/detail/MN107--musicnomad-amp-and-case-cleaner-and-conditioner
Best place to buy amp tubes! - www.thetubestore.com
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Komentáře

  • @paulrimmer5632
    @paulrimmer5632 Před 3 dny

    Excellent video, just what I was looking for. Thank you

    • @roycox4415
      @roycox4415 Před 3 dny

      @@paulrimmer5632 thanks so much! So glad it was helpful!

  • @sadman4life
    @sadman4life Před 4 dny

    Hello, your video so far has been very helpful although I do have one question. After I looked at a diagram it showed a long wire that is on the side of the 3 pots in your demonstration there is no such wire. My question is whether or not I still have to connect this wire on my own

  • @terrellovett4940
    @terrellovett4940 Před 6 dny

    Very helpful, thanks a lot.

  • @jamescassidy4045
    @jamescassidy4045 Před 7 dny

    So I'm confused. Can I ask two things? So, Isnt there a way to set the Bias of an Amp with just the Multimeter, without having to use bias probes? Like with just using your regular multimeter probes? Because when I tried biasing my 900 for the first time, I had some help, and I just remember having to have the black probe on the chassis, and touching the red probe to a leg of a certain resistor, or the bias test point, and then setting the bias until I got a certain reading on the MM. Like within the recommended bias number as per Marshall, and then I made small tweaks while playing to decide where I wanted it. Second, so is using bias probes just a more in depth elaborate way to bias the amp, or a way to get a better average if tubes are not matched or something? So the process is, If your using those Bias Probes, are you just getting the plate voltage first(with the normal MM probes), then sticking the bias probe in one of the Sockets with the tube in the bias probe, doing the math, and then setting the bias trim pot, while that same tube is in the bias probe, and then thats it? That's what I don't get, because it seems odd to me that you only need to use the Bias Probe with one tube, but then if you do for some reason use it with every tube, and each tube reads different, or is unmatched, then how do you set it since theres only one trim pot? You just take an average of all the tube bias readings first? Like what I mean is say you set the bias to 44 with the first tube, and then go to the second tube and it's not 44, how can you set it to 44, without the other one drifting? Also, don't you need to get the plate voltages for all the different tube sockets? I guess so I'm not confusing you by babbling, Im just confused, because in the video it looks like you are getting the PV off one socket, putting the probe in one socket, getting a Bias reading, doing the math, and then setting the Bias while the bias probe is in that same socket/tube, and thats all there is to it.

  • @CalTN
    @CalTN Před 10 dny

    Im not anywhere near tracking live drums. If I'm wanting to go DIY pre/eq and just record vocals/DI where do you recommend i start?

    • @roycox4415
      @roycox4415 Před 6 dny

      Do you mean diy as in tracking the vocals yourself or diy pre/EQ as in building the pre/end yourself and then tracking vocals?

    • @CalTN
      @CalTN Před 6 dny

      @@roycox4415 DIY building modules

  • @BeesWaxMinder
    @BeesWaxMinder Před 15 dny

    'Hope ya do this for Snares

  • @consciousfunk
    @consciousfunk Před 15 dny

    Got so much to find this video and HIM! So humble! So knowledgeable 😊 🙏🏼

  • @jonunderscore
    @jonunderscore Před 18 dny

    What's that song in the intro?

  • @chateautemp
    @chateautemp Před 20 dny

    A true Leicaman. Brilliant.

  • @LuLeBe
    @LuLeBe Před 20 dny

    Loved the video, even though I can't take some of the preamp talk seriously with the "controlled low end" etc. Especially after watching some great interface reviews that show that almost all modern, even cheap, preamps and ADCs are super linear with extremely low distortion.

    • @roycox4415
      @roycox4415 Před 20 dny

      i absolutely found the same thing and thought there were absolutely no differences in any preamps, etc. Then i added a set of the capi vp25 preamps and the difference in the fullness of the kick drum outside microphone was vastly different between the capi and the presonus built in preamps i was using at the time. There are a lot of preamps where i cant tell the difference, some preamps i cant tell the difference unless its compiled with a bunch of tracks together like with an entire kit recorded with the audient preamps and then the the capi. Again a big difference in tone to me. Then there are preamps where i absolutely couldn't tell the difference at all. There is definitely a reason that foo fighters track through the old neve board rather than off the shelf interface preamps. The difference is that the interfaces nowadays all track really well so in many cases there isnt a huge need to have higher end preamps unless those minor differences matter to you.

  • @frankkaiser2354
    @frankkaiser2354 Před 28 dny

    Huge compliment. I watched this video with excitement and I have to admit. I don't know of any comparable video that explains things so helpfully. In Germany, this still seems to be a huge problem. Thank you very much. I finally dare to tackle electronics. Greetings from little Germany

  • @MikeMakesUK
    @MikeMakesUK Před 29 dny

    A very informative guide. But, we have the trem wired to the screw inside the body. So where does it ground to after that? Because as far as I can see, though the trem is connected to that screw, collectively they're not grounded to anything. 🤔 Did I miss something?

    • @roycox4415
      @roycox4415 Před 6 dny

      It’s connected to the ground wiring that goes from pot to pot in the electronics and the final point is to the top of the volume pot.

    • @MikeMakesUK
      @MikeMakesUK Před 5 dny

      @@roycox4415Wonderful. Thank you. 😁

  • @rolandjgutierrez7737
    @rolandjgutierrez7737 Před měsícem

    if no shielding wier from claw to where is the scrrw o ground the shield where woukd I connect from.claw ground to thst my didconect the wier is souderd to claw.?

  • @Freshk1ne
    @Freshk1ne Před měsícem

    🔥🔥🔥Great video ✊🏾🎵🎵

  • @curtisliptak3099
    @curtisliptak3099 Před měsícem

    Sorry - You forgot to include a ground wire to connect to the Stratocaster spring claw. Big mistake bro.

    • @roycox4415
      @roycox4415 Před měsícem

      I didn’t. Read the description. It talks about it in the video also.

  • @psmith7781
    @psmith7781 Před měsícem

    Just as you wire leads to an outlet, going over the top of the screw with your hook, allows the wire to be pulled into the turn of the screw, so it does not back out.

  • @samanthacerbakova5451
    @samanthacerbakova5451 Před měsícem

    BIG HELP !!! thank youuu

  • @MichaelP-lk6zk
    @MichaelP-lk6zk Před měsícem

    Which bias probe do you use? Does it matter if it measures the plate current or the cathode current?

  • @TBD3.0
    @TBD3.0 Před měsícem

    👍

  • @AndreiAguilar-vt3zw
    @AndreiAguilar-vt3zw Před měsícem

    is there an android alternative for pixela?

  • @JayAwakene
    @JayAwakene Před měsícem

    I did this from looking at a guitar wiring diagram, I needed a video to explain better because my guitar was buzzing when I don't touch it and buzzes louder when I touch it.... I guess I missed the grounding from the input jack to the volume, I mixed the ground wire for the other one

    • @JayAwakene
      @JayAwakene Před měsícem

      I'm yet to test it but I've just swapped the ground wire to be where it is meant to be

  • @SixStringJoy
    @SixStringJoy Před 2 měsíci

    @roycox4415 Thanks SO much for your video. I have two issues: one is that for the umptheenth time my middle tone pot somehow is a volume and sometimes the volume is constant on. Now this didn’t just happen once but it’s a recurring mistake. I followed the video step by step. Could you please tell me how my tone pot could falsely become a volume pot for neck and middle instead of tone? I have soldered middle tab of tone pot to first tab plastic side of switch and third tab tone pot grounded to top of very pot sharing the leg for the capacitor (that goes to the bridge tone pot; bridge tone works!). I also jumped tab 1-2 on the switch like you say in the video - how could the middle tone pot suddenly be a volume? Pickups work, volume works, bridge tone works but the middle tone pot is now a volume for neck and middle pups… any help is greatly appreciated

    • @SixStringJoy
      @SixStringJoy Před 2 měsíci

      So the problem is with the capacitor connection from first to second tone pot somehow idk why. In my world logic would dictate that if I connect the same tab of a tone pot to the respective pickup it would be a tone pot - that works for the bridge just fine. But once the tone pot is added to that equation all kinds of weird things happen. I took out the capacitor and now I have no tone pot for some reason but everything else works…. Idk 🤦‍♂️

  • @johnhowardnardine6815
    @johnhowardnardine6815 Před 2 měsíci

    Wow. And just like that I went from not knowing a single thing about what goes on inside the electronics of a Strat, to thinking I might be able to wire one up. Very clear and methodical explanation!!! My only question is what is the function of the capacitor. Thank you so much for sharing this knowledge with us.

  • @Frank00064
    @Frank00064 Před 2 měsíci

    The API 312 doesn't use the 150K resistor in the input, CAPI use this resitor . Anyone tried the CAPI VP312 without the 150K resistor?

  • @SixStringJoy
    @SixStringJoy Před 2 měsíci

    Thanks for this video. I can’t figure out why the vol pot is constant on. I did what you show in this video and I can’t figure it out. It’s just constant on. It’s just three connections far as I know the tab of the vol pot to the first tab of the switch jumped to last tab metal side of switch but I just can’t figure it out

  • @SixStringJoy
    @SixStringJoy Před 2 měsíci

    13:00 prep/tin the legs switch 18:00 capacitor 21:57: Bridge Tone 25:50: neck/middle tone jumper 23:27 neck tone 27:50 Volume Pot 30:30 pickups 34:00 rest of connections

  • @HermanRebuar
    @HermanRebuar Před 2 měsíci

    THANKS!!! How do i do it on pc

  • @majorvibes1225
    @majorvibes1225 Před 2 měsíci

    Squirrelling

  • @richbruns3465
    @richbruns3465 Před 2 měsíci

    Very helpful tutorial exactly what I needed for wiring up my input jack on my stratocaster. Thanks very much!

  • @gwbenites
    @gwbenites Před 2 měsíci

    I don't know if you were referring to Rene Martinez (Stevie Ray Vaughan's tech) or not, but it's funny because his first tech was a guy named Cesar Diaz who was both famous and infamous at the same time. He has since passed, but he did some great things such as making and modding amps, making pedals and such, but he was known to do some things that drew a lot of criticism also. Things such as using WD-40 on pots, which most techs consider a no-no, and being pretty outspoken about doing things that are now considered blasphemous.

    • @roycox4415
      @roycox4415 Před 6 dny

      That’s exactly who I was referring to. He must have been quite good at what he did but I think he had a lot of weird habits that are now seen as “do not dos”. You’re right!

  • @philf4086
    @philf4086 Před 2 měsíci

    Will these amps only discharge when plugged in? There must be good continuity with a ground correct?

  • @philf4086
    @philf4086 Před 2 měsíci

    Super helpful video Roy, many thanks from this newbie! Could you talk briefly about input power conditioning if you do any of that? Thanks!

    • @roycox4415
      @roycox4415 Před 6 dny

      There are two main power conditioner units in the rack. Both are 8 input furmans. The best thing about these is the stable power levels they help keep but also making it much easier to turn on and off a bunch of the rack mounted pieces by only turning on those two units. I really believe that power conditioners are essential.

  • @mikesenko1
    @mikesenko1 Před 2 měsíci

    thanks for a clear explanation on the switch it realy helped

  • @amackclassic6737
    @amackclassic6737 Před 2 měsíci

    I'm so glad you mentioned API as your favorite pre. I remember being in a B room somewhere in LA with The Box and I was blown away by my sound. I listened to that beat in the car for hours after the session, pre mix and I was amazed at the clarity of a raw mix. I'd heard vintage Neve and SSL 9K also but the API made an impression I'll never forget.

    • @roycox4415
      @roycox4415 Před 2 měsíci

      There’s just something about the tone that gets me every time, especially if you are stacking track after track using the api. Delicious, saturated tone

  • @olenfersoi8887
    @olenfersoi8887 Před 2 měsíci

    While the effect may be the same for what capacitors do...affect the ratio of high to low tones that get output...your explanation is backwards. "Caps" act as high pass filters. The high frequencies passed do not vary with different value caps. What changes is the low frequency cutoff level...thus, the amount of low & mid range frequencies that are cut off. In other words, the output varies, with different value caps, from a wide mix of frequencies, to mostly high frequencies (smaller value cap). Thus, the higher value cap (as large as close to .1 will cut out the least mid & bass range frequencies...whereas the lowest value cap (say, .001) will allow only the highest frequencies to pass. The most common values used are : .015, .022, .033, .047, .065 but higher are lower values are available. (...values in "micro farads")

  • @VELVET462
    @VELVET462 Před 2 měsíci

    The Sonarworks Plugin with the Fixed Curve Profile has always to be running in the background, if i quit Sonarworks i get the normal "untreated" sound again, right? I have the Sonarworks reference with the Mic here, but still kinda figure things out and also building more absorbers, Basstraps etc to get the most out of it. Thanks for the Video, very interesting suggestions! Just filling the Studio Desk Rack holes at the moment and after that i will go with a cranborne 500 ADAT modul, you should check that too, its a great Modul with very new possibilities! :)

    • @roycox4415
      @roycox4415 Před 2 měsíci

      yes. so in my case the sonorworks plugin is always in the listen buss section of studio one pro. About once a year ill recalibrate and make an updated profile but yes its always on when mixing or tracking. You bypass the plugin when mixing down or outputting your session so its not burned into the mix. Its a fantastic program that makes a huge difference.

    • @VELVET462
      @VELVET462 Před 2 měsíci

      @@roycox4415 wait like you talk about it, its more like a VST version? i remember a few years back i just installed a normal windows software? Do i miss something?

    • @roycox4415
      @roycox4415 Před 2 měsíci

      @@VELVET462 yes im using a plugin version of sonorworks. I use the standalone main program to create the profiles and then the plugin within my daw to run the profile

    • @VELVET462
      @VELVET462 Před 2 měsíci

      @@roycox4415 thanks, it makes more sense now!

  • @drewgraysonxoxopanda
    @drewgraysonxoxopanda Před 2 měsíci

    I'm surprised you're not tinning your connection points and wires before soldering your connections. Excellent video.

    • @roycox4415
      @roycox4415 Před 2 měsíci

      they were pre tinned. i had done it beforehand

  • @t.henricus9971
    @t.henricus9971 Před 2 měsíci

    Great video, thank you!

  • @kdubatx1
    @kdubatx1 Před 2 měsíci

    Thanks for this

  • @raymondruiz1843
    @raymondruiz1843 Před 2 měsíci

    Hi there! How many volts does that capacitor have? Thanks 😊

  • @SixStringJoy
    @SixStringJoy Před 3 měsíci

    For once the input jack wires are long enough. I fail to understand why usually they’re so short you can barely access the underside of the pickguard for working on it. Great video! Thanks

  • @andrewferrara11
    @andrewferrara11 Před 3 měsíci

    Great video! For studio, the Remo Powerstroke 3 Coated will be great, but an impact patch will extend the durability more. If I’m doing a hard rock and metal band gig, (Metallica, Guns N’ Roses, AC/DC), the Remo Pinstripe or Evans EMAD Heavyweight will be perfect. If I’m doing a jazz band gig (Nat King Cole), then maybe the Ambassador Coated or Fiberskyn Ambassador. If it’s a punk rock gig (Green Day, The Ramones), the Remo Powerstroke 4 or Evans EMAD 2 will be great for that. If I’m doing a classic rock gig, (Led Zeppelin, Boston, Queen, Pink Floyd), the Emperor Coated will be great. It all depends on my personal preference, the genres of music and the durability I want

  • @lukesotangkul1589
    @lukesotangkul1589 Před 3 měsíci

    How do you connect the XLR input from the microphone to the patch bay?

    • @roycox4415
      @roycox4415 Před 3 měsíci

      You aren’t connecting your microphone directly to the patch bay, you are connecting it to a preamp first. Some patch bays can actually be xlr patch bays but in most cases you will connect your microphone to a preamp that is wired into your patch bay, not directly to the patch bay itself. In my case I have stage boxes on the floor that are wired to the patch bay. My mics get plugged into whatever preamp I want to use via the floor boxes and then the floor xlr stage boxes are wired to the preamp inputs in my patch bay.

  • @kevinsmithsmusic
    @kevinsmithsmusic Před 3 měsíci

    Really impressed by a simple clear emperor

  • @Wodawic
    @Wodawic Před 3 měsíci

    Great video. Thanks much.

    • @roycox4415
      @roycox4415 Před 3 měsíci

      thanks so much! glad you enjoyed it!

  • @rolandosoto4545
    @rolandosoto4545 Před 3 měsíci

    I’m trying this myself now thanks nice video

  • @catman3953
    @catman3953 Před 3 měsíci

    I just spent an 1.5 hours of my life trying to get this transfer to work on a camera bought four years ago. Canon's website took me to Hell and back and all I got was the opportunity to give up a lot of info so that they could send me stuff:-(

  • @curtiseverett1671
    @curtiseverett1671 Před 3 měsíci

    remember the Barn? I think it was in Towson....

  • @edubatera72
    @edubatera72 Před 3 měsíci

    I only use 18” bass drums so the thickness is very important … heavy weight, emad2 and hydraulic

  • @dekrev
    @dekrev Před 3 měsíci

    Funny - we used to throw charged capacitors at each other when I was in trade school ☝️🧐