Welcome To the Hoffman Amplifiers Forum

September 08, 2025, 05:09:49 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: I cant get my speaker out ga-20  (Read 5117 times)

0 Members and 1 Guest are viewing this topic.

Offline john_t

  • Level 2
  • **
  • Posts: 186
  • I love tube amps
Hoffman Amps Forum image
I cant get my speaker out ga-20
« on: November 03, 2010, 04:35:26 pm »
I have what I believe to be a 1950 Gibson ga-20. The leatherette covering runs from the top of the cabinet onto the back cover. (All one piece. Same on bottom)The out put transformer is bolted to the speaker frame. Not a issue.  A Jensen p12r. The chassis will swing out but there does not seem to be room to remove the speaker with the top or bottom back covers in place. I dont want to hack up the cabinet and covering. I cant believe the speaker was installed prior to covering the cabinet.

HELP.

John

Offline rafe

  • Level 3
  • ***
  • Posts: 1094
  • I have tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #1 on: November 03, 2010, 06:50:25 pm »
Can you take out the baffle from the front with speaker attached ? I don't think they would tolex it after speaker was in ....but without seeing it I can only guess
Rafe

Offline john_t

  • Level 2
  • **
  • Posts: 186
  • I love tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #2 on: November 03, 2010, 07:58:30 pm »
Rafe, you might be onto something. There is a weird kinda of straw type grill cloth with a wire under the cloth. With the grill cloth out of the way I might be able to work the speaker out of the cabinet.  Just had the amp recapped and I love this amp. I am afraid if I continue to play and drive the amp hard Il toast the speaker. It is a bit microfonic, not sure if its the speaker or not so I thought I would get it re coned.

Offline john_t

  • Level 2
  • **
  • Posts: 186
  • I love tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #3 on: November 04, 2010, 11:16:10 am »
Rafe, you were right on. It's a bit of a pain but you have to pull the speaker baffle out then there is just enough room to slip the speaker out the back.

thanks much
john t

Offline rafe

  • Level 3
  • ***
  • Posts: 1094
  • I have tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #4 on: November 04, 2010, 01:39:27 pm »
Great news on your amp ....I am waiting on two 8" alnico jensens which are being reconed.....I would try another speaker first to see if the microphonics go away (or tap your tubes one at a time with speaker attached)
I would not redo a speaker unless absolutely necessary. It's like the pet cemetary they come back ...but never the same....which doesn't mean they are bad....if your speaker is OK and you like it, my advice is use it ...that's what I do , however some people take them out and put them away to protect them.
Two different schools of thought personal reward or resale.....Me, I'll enjoy the sound of the original if possible
Rafe

Offline john_t

  • Level 2
  • **
  • Posts: 186
  • I love tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #5 on: November 04, 2010, 04:09:18 pm »
Rafe I have a Weber sig 12S I purchased a few years back. Weber had a buy 2 for less deal going at the time. I do like the speaker in the amp. I am not planning on selling the amp. I am also not big on the idea of pulling the speaker out so someone else can enjoy it when Iam gone. I was concerned I could damage the speaker beyond repair if I cranked the amp much. Not that i am playing heavy metal with the amp. More R & B type stuff.  Is that not a concern.

Offline rafe

  • Level 3
  • ***
  • Posts: 1094
  • I have tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #6 on: November 04, 2010, 04:44:11 pm »
That speaker was most likely rated to take all the watts that amp could throw at it. I(I is the key word) don't think it would be a problem......I have a 65 supro thunderbolt with a 15 inch jensen in it. I dime it and play and have had it a few years no problem. It's really going to be a judgement call for you. However you said you were going to have it reconed. Sooooooo you may as well use and enjoy it, because when it's reconed they are going to replace everything( you won't ruin it in that regard) .....so you can't really lose. Hopefully other will chime in here so I don't mislead you ....these are only my opinions and my take on it regards R
Rafe

Offline john_t

  • Level 2
  • **
  • Posts: 186
  • I love tube amps
Hoffman Amps Forum image
Re: I cant get my speaker out ga-20
« Reply #7 on: November 04, 2010, 07:11:18 pm »
OK, I think i am going to just play the stock speaker for a while and enjoy it. I think your right. I guess as long as it sounds ok. Dont fix what aint broken.

Thanks again for the help.

john t

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program