Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Planobilly on December 19, 2016, 08:44:32 am
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Hi Guys,
This was my first attempt at trying to make a case and covering it. I made a few mistakes and learned a good bit about the process. I think I learned enough to do a good job on the next one. Education is never cheep...lol
The amp is basically a Hoffman AB763 with a few mods. The current speakers are two Celestion vintage G12M from the 1980s. I ordered Weber D12 and also Weber NeoMag to experiment with. The NeoMag is Weber's take on a JBL D120F. They should be here is a week or two.
The reverb is still producing more noise when it is turned up than I am happy with. Other than that the amp only starts to produce a very small amount of hum/hiss when the volume is turned up past 90%. I am not sure just how to reduce the reverb noise.
(http://i.imgur.com/yQXA84l.jpg)
Cheers,
Billy
EDIT: The plate is actually not black but a darker brown. I want to get set up to do engraving for face plates but I need a new computer and a high speed 12000 RPM motor for my CNC mill. Most likely around $1500 worth of stuff. May be a while before I can afford it. Never enough money...lol
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Looks great, what glue did you use for the tolex?
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Nice build.
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You won't be disappointed with this amp. My single channel build sounds amazing. I'm positive yours does too.
I like how stuff from the 80's is now seen as "vintage".
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Very nice job on the amp! It looks great. Thanks for sharing the photo.
Best regards, Jeff
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Thanks guys
I used 3m spray glue. I would use a stronger glue on the next build.
Cheers,
Billy
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Hey Billy, Yeah, used that spray stuff and...............
I use gel bond as it is less stringy than normal contact, less messy.
The trick I find is to apply the contact and leave it for at least 5 minutes before putting the tolex on.
I paint only to start of the radii on the edges.
Once I have wrapped the tolex around the four sides I do all the edges.
By doing this the contact softens the tolex enough to make it pliable and a little stretchy, makes the tolex stick to those square corners.
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Nice work!
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Hi Timbo,
Nice looking cabinet.
Covering cabinets is like anything else....it takes a certain amount of skill that takes time to develop. I learned enough on this first attempt to know how to prevent most of the issues I encountered on the next one.
Cheers,
Billy
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Great :thumbsup: