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  1. #1

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    Okay, I saw the tape over the top f-hole on Henry Johnson’s Heritage and just have to ask if others have done this as well.

    1.) How effective is it in reducing feedback?

    2.) Is it safe to use on a nitro finish?

    3.). Any other comments?


    Thanks!

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  3. #2

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    Regardless of how effective it could be, the tape will eat the nitro. Just order some f-hole plugs.
    Jazz isn't dead. It just smells funny. FZ

  4. #3

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    If I'm going to play loud enough that I cannot control feedback by (1) sitting/standing in a useful relationship from the amp, or (2) employing a laminate-body archtop (this usually takes care of things), then I just switch to a Strat or a Tele.

    Almost always, though, (1) or (2) above works for me. I would never use tape on the guitar. I don't imagine that I would plug an f-hole(s), either, with one of the foam doo-dads.

  5. #4

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    Quote Originally Posted by Greentone View Post
    I don't imagine that I would plug an f-hole(s), either, with one of the foam doo-dads.
    I didn't know what to make of them either, but they came with my old Hofner Jazzica and worked perfectly.
    Jazz isn't dead. It just smells funny. FZ

  6. #5

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    Yeah...I've seen them in use from about six feet away. They work great. I just don't like "stuff" on my guitar. For example, I never attach a headstock tuner to any of my guitars. I'm just a nerd.

  7. #6

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    Perhaps a tape with a gentler adhesive might make for a better choice?
    Something like Gaffer's tape or maybe Masking tape for delicate surfaces?

  8. #7

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    Painter's tape might work, but it's not much in the looks department. I use it all the time for marking the bridge location if I change strings or do other work on an archtop. I've never tried it for covering the soundholes, though, just never saw the need. Other solutions work for me.

  9. #8

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    Has anybody tried blowing up ordinary balloons inside the guitar? I've read about this and always wondered if it worked.

  10. #9

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    Thanks for the comments. They tell me what I wanted to know, which is that no one here uses the packing tape method. Don’t like the idea of plugs in the f-holes myself. I’ve got an Eagle with a floating Kent Armstrong PAF. It isn’t a huge problem... just wanted to make sure I wasn’t missing something.

  11. #10

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    Been covered many times here.
    I ordered a pair of Doug Plugs about 12 yrs ago for my old L-5 and they're about the best $50 I ever spent.

    Almost can't tell they're there and they work great.
    I play in a lot of Hammond organ bands w a Twin Reverb right behind me and they do the job.
    When I got the guitar it had old packing tape on the f holes and it left marks in the nitro. I was able to remove the marks but I'd never use that stuff.
    Might be safe on a poly guitar but I never tried it.

  12. #11

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    I am the current conservator for this guitar. This is what duct tape does after about fifty years. Is that cool or what?
    The one and only Tommy Tedesco!
    The Packing Tape Solution-tedescotapedfholes-jpgThe Packing Tape Solution-ycc3b6abr8c2yvggokvxrw-jpg
    Guitar Addicts Anonymous
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  13. #12

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    Ouch! That hurts! Duct tape?!?!

  14. #13

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    Technically gaffer's tape, but generally referred to as duct tape. It is probably what was conveniently at hand at the time he decided to use something.

  15. #14

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    Gaffer’s tape isn’t duct tape. It’s probably safer on a guitar finish, but only for a short time.
    Duct Tape vs Gaffer’s Tape: The Right Tool for the Job | ECHOtape

  16. #15
    Quote Originally Posted by SandChannel View Post
    Regardless of how effective it could be, the tape will eat the nitro. Just order some f-hole plugs.
    I've been using it for years on a '63 kessel, never ate the finish. Paul Bollenback and Benson, Rodney Jones and many others use it and haven't had a finish issue.

  17. #16

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    Is someone out there crazy ???? Tape on a guitar for more than 10 minutes???????

    At work, where fine woodwork is what we do, we are INSTRUCTED to remove any tape as soon as the work is finished. Why??? It will damage a finish. Even painters' tape.

    You wouldn't know it until you try to remove old tape, yes, even painters' tape. If you can remove the aged tape, be prepared to witness an imprint of the tape, and maybe damage to the finish. Double the effect if any moisture is present, or sunlight, or changes in atmosphere. You get the idea.

    And, I don't think that tape is gonna prevent feedback. You have a guitar top that's vibrating.

  18. #17
    Quote Originally Posted by Jimmy Mack View Post
    Is someone out there crazy ???? Tape on a guitar for more than 10 minutes???????

    At work, where fine woodwork is what we do, we are INSTRUCTED to remove any tape as soon as the work is finished. Why??? It will damage a finish. Even painters' tape.

    You wouldn't know it until you try to remove old tape, yes, even painters' tape. If you can remove the aged tape, be prepared to witness an imprint of the tape, and maybe damage to the finish. Double the effect if any moisture is present, or sunlight, or changes in atmosphere. You get the idea.

    And, I don't think that tape is gonna prevent feedback. You have a guitar top that's vibrating.
    Jimmy, I've been using it for years on a 175, 165 and '63 kessel with no issues. Benson, bollenback,jones and many others use it. It definitely eliminates feedback. Works better than plugs too. Not sure why but it does.

  19. #18

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    Quote Originally Posted by jzucker View Post
    Jimmy, I've been using it for years on a 175, 165 and '63 kessel with no issues. Benson, bollenback,jones and many others use it. It definitely eliminates feedback. Works better than plugs too. Not sure why but it does.
    Are you leaving it on for prolonged periods or do you routinely remove and reapply?

  20. #19

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    Mark Farner (Grand Funk Railroad) used a Musikraft Messenger until he wore out the frets. It's a semi hollow body and fed back like hell. He stuffed the F holes with foam rubber and covered them with masking tape. Evidently it worked.



  21. #20

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    I recently had my first feedback problem ever with my 175 through a Henriksen 110ER.
    My quartet was crammed into the corner of a packed room. New experience !!!!
    I had the amp aimed up a little and right behind me. Certain low notes wanted to howl like the wolf.
    I damped those suckers down with spare fingers and soldiered on. Not my best comp tone ever, but my solos were OK.
    Still the whole situation got me thinking. Definitely not a master of louder.

  22. #21

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    I had good luck working a thick piece of foam padding into the F hole and wedging it between the top and the back. It takes patience and you need to be careful about the wiring, but it worked beautifully for me. Obviously it's not something you'd want to do and undo all the time.

  23. #22
    Quote Originally Posted by wintermoon View Post
    Are you leaving it on for prolonged periods or do you routinely remove and reapply?
    take it off the next day.

  24. #23

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    You can always weaken the painter's tape adhesive BEFORE putting it on your instrument by repetidly applying and removing it on some clothes.

  25. #24

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    Quote Originally Posted by rpjazzguitar View Post
    Has anybody tried blowing up ordinary balloons inside the guitar? I've read about this and always wondered if it worked.
    lol that's awesome
    White belt
    My Youtube

  26. #25

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    I have a couple of pieces of furniture foam that I rough cut to shape, and I stick them inside if I know I'm going to face a situation.
    -- Isn't it crazy that "archtop" and "luthier" are spelling errors on this forum?

  27. #26

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    Balloons should work like tape, maybe better, if they're directly under the f holes. But I've never needed to try it, so I can't say from personal experience. I've never used tape, either, just speculating.

  28. #27

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    Quote Originally Posted by wintermoon View Post
    Been covered many times here.
    I ordered a pair of Doug Plugs about 12 yrs ago for my old L-5 and they're about the best $50 I ever spent.

    Almost can't tell they're there and they work great.
    I play in a lot of Hammond organ bands w a Twin Reverb right behind me and they do the job.
    When I got the guitar it had old packing tape on the f holes and it left marks in the nitro. I was able to remove the marks but I'd never use that stuff.
    Might be safe on a poly guitar but I never tried it.
    Doug is a friend of mine and I was in on his early experiments with the plugs. I think it's still the most elegant solution, looks great, works, no harm to the guitar. Balloons or stuffing seems to me would affect the response of the guitar somehow.

    I've also used the bottom of sandals and cut out a shape with a fine saw. Not as elegant as Doug's plugs though.
    - Lawson
    "Whenever you come near the human race, there's layers and layers of nonsense." - Thornton Wilder, Our Town

  29. #28

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    Just fill the git with this... :-)

    The Packing Tape Solution-grat_stuff-jpg
    Regards,

    Gary

  30. #29

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    The interior of my ‘68 GJS was completely stuffed full of furniture style foam rubber when I got it. Pulling it all out through the f holes was not a quick or easy process.

  31. #30
    i've never worried about weakening the adhesive. My son had packing tape on the F-Holes of his '91 Gibson ES-165 for over 6 months. When we took the tape off, it left residue on the finish which wiped clean after wiping off with a cloth with naptha on it. No finish damage.

    Don't be afraid of tape, lol.

    Again, i will say that I've used plugs and they don't work as well as tape for some reason. Bollenback mentioned the same thing to me. He always used packing tape on his nitro-finished guitars. Benson has also always used packing tape and rodney jones uses it as well.

  32. #31

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    Quote Originally Posted by rpjazzguitar View Post
    Has anybody tried blowing up ordinary balloons inside the guitar? I've read about this and always wondered if it worked.
    Don’t leave them in too long or they will affect the finish.

    The Packing Tape Solution-cd97a2f7-6315-4e0e-bc93-7941f06602e8-jpg

  33. #32

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    Quote Originally Posted by Jonathan0996 View Post
    I had good luck working a thick piece of foam padding into the F hole and wedging it between the top and the back. It takes patience and you need to be careful about the wiring, but it worked beautifully for me. Obviously it's not something you'd want to do and undo all the time.
    me too Johnathan
    I suggest for anyone considering this
    just stuffing the upper bout first and try it out on a gig .....
    (one bout was enough for me)
    and you won't be anywhere near the wiring
    Apart from reducing the propensity to feedback to almost nothing
    It also made the guitar less bright and with a shorter decay
    (which I happen to like ....)

    good luck

  34. #33

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  35. #34

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    Not on my L5! Maybe on a Poly finish.
    I have stuffed guitars, had to! A '68 Guild ST 302 that howled like nothing else, and we were playing rock, in large clubs. That did it.

  36. #35

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  37. #36
    Quote Originally Posted by Moonray View Post
    In my group, modern jazz guitar (see signature below) Bruce Forman wrote that Henry Johnson turned him on to cling-wrap tape for the f-holes. Henry switched from packing tape to cling-wrap tape.

  38. #37

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    Taping the holes keeps air from freely moving in and out of the guitar body. The top can still vibrate.

    At some frequencies where the net air volume does not change much (part of the top moves up while another part moves down) the tape does almost nothing.

    At the moaning frequencies that we associate with acoustic feedback, the air volume changes significantly.

    The tape causes the air in the guitar to be compressed and expanded - rather than simply moving in and out through the f-holes. The air somewhat resists this expansion and compression, thus the feedback damping.

    The extent to which plugs will not seal as well as tape will reduce the effectiveness of the plugs in this regard.

    *************

    On the other hand, plugs add more mass than tape, but this can be less effective than sealing the air chamber in terms of damping feedback.

    In my opinion.

  39. #38
    randy johnston uses rubber plugs. He says they work the best. I may try making my own

  40. #39

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    I use heavy vinyl clear tapr on my archtops with heavy Poly finishes . These are working guitars. Guild x-150d Ibanez ag95 Conti, Peerlace monarch .To keep busy sometimes I have to play quite loud in fairly cramped spaces Recently retaped one after changeing a volume pot No damage to finish was visible Mickmac

  41. #40

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    I know John McGlaughlin performed for quite some time with a Johnny Smith. I saw him playing this instrument with Joey DeFrancesco several years ago and this was a high volume performance. I never noticed him struggling w/ feedback. Does anyone know what he used to control feedback?

    Albert
    Last edited by AKA; 08-23-2019 at 09:00 PM. Reason: Add missing text

  42. #41

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    Quote Originally Posted by rpjazzguitar View Post
    Has anybody tried blowing up ordinary balloons inside the guitar? I've read about this and always wondered if it worked.
    I used that method with a Johnny Smith several years ago, wedging a piece of mat black cardboard between a ballon underneath the bass side f-hole. It worked and I only had to change out the balloon
    like once a year. The acoustic dampening effect was minimal and since I used that guitar in an electric band it didn't matter. It's non-invasive and cheap, just give it a try.

  43. #42
    Quote Originally Posted by AKA View Post
    I know he performed for quite some time with a Johnny Smith. I saw him playing this instrument with Joey DeFrancesco several years ago and this was high volume performance. I never noticed him struggling w/ feedback. Does anyone know what he used to control feedback?

    Albert
    who is "he"

  44. #43

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    Quote Originally Posted by jzucker View Post
    randy johnston uses rubber plugs. He says they work the best. I may try making my own
    The sole material from inexpensive "flip-flops" works pretty well.
    - Lawson
    "Whenever you come near the human race, there's layers and layers of nonsense." - Thornton Wilder, Our Town

  45. #44

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    Quote Originally Posted by jzucker View Post
    who is "he"
    Oops! I was referring to John McGlaughlin playing his Johnny Smith at loud levels touring with Joey Defrancesco and others.

    Albert

  46. #45

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    Quote Originally Posted by Easy2grasp View Post
    I am the current conservator for this guitar. This is what duct tape does after about fifty years. Is that cool or what?
    The one and only Tommy Tedesco!
    Tommy used to stubb out cigarettes on his main studio Telecaster. Good for it's shock value. He cared little for the appearance of his guitars. He would do ANYTHING to get thru the gig...Play classical guitar with a pick...tune any instrument like a guitar...nothing was sacred.