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Thread: Getting a buzzing sound from my new speaker cabinet

  1. #1
    Forum Member Michael Smith's Avatar
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    Getting a buzzing sound from my new speaker cabinet

    I am getting a buzzing sound when playing a few notes around the low "A" on a guitar. Even at a fairly low volume. At first I thought it was voice coil rub, which would not have made me happy. But when I play a note and press against the upper back panel, the buzz goes away. I think I may have drilled the holes in the back panels too large and used too small of screws, but that's what I had on hand. I'm thinking of lining the surface where the back panels meet the cleat with felt, and/or perhaps using some #8 wood screws and some Fender style "dress washers". Hopefully Home Depot will have something similar in stock so I don't have to place an order with Amplified Parts just for the dress washers and pay the shipping which would probably be more than the washers. The rest of the speaker cabinet is rock solid with the finger joints I used and the 1/2 inch baffle board.

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    Re: Getting a buzzing sound from my new speaker cabinet

    I'm interested in knowing what you find out & how you resolve the issue

  3. #3
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    Re: Getting a buzzing sound from my new speaker cabinet

    I've never built an all wood cab, so the tolex dampens any of those problems. Maybe try a strip of felt hidden behind the panel?

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    Forum Member phantomman's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    It might be that the plywood rear cover is delaminating. Examine the edges to ascertain that the adhesive between the plies is still sound.
    "When injustice becomes law then rebellion becomes duty."

  5. #5
    Forum Member Michael Smith's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    I've got some felt glued onto the cleat where the wood on wood contact with the back panels occurs. I don't have the middle back panel installed, so it's a semi-open back cab at the moment, which is how I will probably leave it. I used white household glue and the felt is not sticking very well to the wood, even after curing for a day. I may try some yellow wood glue next.
    "The Mornin' Sun is Rising...It's Kissin' the Day" Journey

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    Forum Member phantomman's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    How about some of that self-adhesive moleskin? You can cut it into strips to fit the cleats.
    "When injustice becomes law then rebellion becomes duty."

  7. #7
    Forum Member Michael Smith's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    That's a good suggestion Phantomman. I think the yellow wood glue is going to work however. I applied some to a test section about an hour ago, and it's already holding the felt in place. I didn't know that felt was made from 100% recycled plastic, at least the sheet I bought at WalMart for 32cents is.
    "The Mornin' Sun is Rising...It's Kissin' the Day" Journey

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    Forum Member phantomman's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    If yellow wood glue doesn't work, Gorilla Glue may be the ticket.
    "When injustice becomes law then rebellion becomes duty."

  9. #9
    Forum Member Michael Smith's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    The yellow wood glue I used is the indoor type, so if I have to start over, I could soak the felt strips in water to get them clean. Or I could spend another 32 cents for a new sheet of felt, lol (plus gasoline to get there and back).
    "The Mornin' Sun is Rising...It's Kissin' the Day" Journey

  10. #10
    Forum Member Michael Smith's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    I'm thinking the yellow Tite Bond glue on the felt will do the trick. Tomorrow I will replace the back upper and lower panels and connect the cabinet to the mighty Fender Deluxe Reverb amp (1977) and see if the buzzing sound is gone. I would still like to get some #8 screws and the Fender decorative washers just for looks.
    "The Mornin' Sun is Rising...It's Kissin' the Day" Journey

  11. #11
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    Re: Getting a buzzing sound from my new speaker cabinet

    I found finish washers at my local Ace here.

  12. #12
    Forum Member phantomman's Avatar
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    Re: Getting a buzzing sound from my new speaker cabinet

    Most big-box hardware stores stock them......about ten bucks for a 100-ct pack.
    "When injustice becomes law then rebellion becomes duty."

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