Marshall 1931 1x12 cab - buzz

Make it loud here.
Post Reply
User avatar
Guitarman555
PAT. # 2.972.923
PAT. # 2.972.923
Posts: 265
Joined: Sun Jan 14, 2018 2:36 pm

Marshall 1931 1x12 cab - buzz

Post by Guitarman555 » Fri Mar 03, 2023 2:55 am

Hi, my 2 cabs (1x12) have buzz when I put them through Marshall PA 20. Both are equipped with 1xG12 H - T 1217 from 1972.
The cabs are
Marshall 1931 A - original cab in good condition, from cca 1990
Marshall 1931 copy

Both of them buzz when the volume on Marshall PA 20 is around half way and higher. Anybody has an idea how to solve it? Or can it be the speaker (speakers looks in great condition for their age, almost intact)....?
Note:
Sound si perfect, buzz is not loud, but you can hear them when the long notes are dying out (especially empty strings or power chords on the bottom). it is definetely not a big issue, but if I could reduce the vibrations just a bit, woud be cool.
When I play under half way volume, there are no vibrations. But I wanna play even louder! :)
Last edited by Guitarman555 on Fri Mar 03, 2023 6:00 am, edited 3 times in total.

User avatar
sal paradise
PAT. # 2.972.923
PAT. # 2.972.923
Posts: 3596
Joined: Thu May 27, 2021 12:41 am

Re: Marshall 1931 1x12 cab - vibrations

Post by sal paradise » Fri Mar 03, 2023 2:57 am

Sound works through vibrations… can you be more specific?
I have nothing to offer anybody, except my own confusion?

User avatar
Guitarman555
PAT. # 2.972.923
PAT. # 2.972.923
Posts: 265
Joined: Sun Jan 14, 2018 2:36 pm

Re: Marshall 1931 1x12 cab - vibrations

Post by Guitarman555 » Fri Mar 03, 2023 3:00 am

Sound si perfect, vibrations of cabinets are not loud, but you can hear them when the long notes are dying out (especially empty strings or power chords on the bottom). it is definetely not a big issue, but if I could reduce the vibrations just a bit, woud be cool.
When I play under half way volume, there are no vibrations.

User avatar
fisonic
PAT. # 2.972.923
PAT. # 2.972.923
Posts: 1518
Joined: Mon Apr 04, 2011 2:09 am
Location: Sydney Australia

Re: Marshall 1931 1x12 cab - buzz

Post by fisonic » Mon Mar 06, 2023 10:51 pm

You might have a microphonic valve picking up acoustic vibrations.

User avatar
JSett
PAT. # 2.972.923
PAT. # 2.972.923
Posts: 8803
Joined: Mon Jun 01, 2009 1:33 pm
Location: Old Hampshire, Old England

Re: Marshall 1931 1x12 cab - buzz

Post by JSett » Mon Mar 06, 2023 11:39 pm

fisonic wrote:
Mon Mar 06, 2023 10:51 pm
You might have a microphonic valve picking up acoustic vibrations.
Possibly. Try with the amp off the cab to the side, maybe pop it on a soft cushion, and see if it does the same thing.
Silly Rabbit, don't you know scooped mids are for kids?

Post Reply