Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Walter78 on January 06, 2015, 12:04:34 pm

Title: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Walter78 on January 06, 2015, 12:04:34 pm
Hi, I'd like to restore my ampeg reverberocket 2. I need the complete circuit board, can you help me?
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: EL34 on January 06, 2015, 12:13:39 pm
Yes, if you give me a layout diagram


See the top post up above on what I need to create an eyelet board
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Walter78 on January 06, 2015, 12:40:12 pm
Here's the problem, I haven't any layout diagram and I don't know where to find it.
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Walter78 on January 06, 2015, 12:55:46 pm
I had a picture from google maybe it can help (sorry for my english I hope you understand).
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Jack_Hester on January 06, 2015, 02:00:54 pm
Doug -

I have a layout of my R-12-R that I made a year or so ago, for troubleshooting.  I don't know if it is the same model as Walter's, but it's in AutoCAD.  I'll look at it this evening.  Mine is drawn to scale, but I'll have to see how I have it layered.  I may be able to send you a DXF file with just the board, eyelet positions, and mounting holes. 

Everything has dimensions shown, but it's kinda busy with all the layers turned on.  I've attached a PDF of it. 

Jack
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: sluckey on January 06, 2015, 02:47:17 pm
Hi, I'd like to restore my ampeg reverberocket 2. I need the complete circuit board, can you help me?
What's wrong with your board?
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Jack_Hester on January 06, 2015, 06:12:07 pm
Walter78 -

What model is your Reverberocket?  And, the year?

The layout that I posted for mine is for a 1962 Model R-12-R. 

Jack
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: EL34 on January 06, 2015, 06:53:38 pm
Hey Jack, Your layout will work for my purposes


Just have to find out if that is the same as Walters amp
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Walter78 on January 07, 2015, 03:25:20 am
Hello to everyone, as you can see from the picture named "my-gs12r" it seams the amp had a restoration in the 90s. what I want to do is  to give to my amp the 60s look that it deserves. The picture named "gs12r" shown the circuit and if you look down side right it seams to be a date (2 66). Thanks for your interest.
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Walter78 on January 07, 2015, 03:26:48 am
Here's the other photo.
Title: Re: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Jack_Hester on January 07, 2015, 04:43:45 am
Hey Jack, Your layout will work for my purposes


Just have to find out if that is the same as Walters amp

Probably won't work.  His is much newer, and a circuit board.  Unless he want's to rebuild with a tagboard.  I suppose that he needs to start another topic for his repair needs/help, as this is getting off from your intent.

Jack
Title: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: EL34 on January 07, 2015, 06:09:38 am
Walter, I need something drawn up like the image below


You don't have to draw the parts, just the eyelet holes

It would be a huge amount of labor for me to do that at $60 an hour

You will have to draw it up or someone else will have to
Maybe you can find something out on the web?




Title: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Jack_Hester on January 07, 2015, 11:26:41 am
But, as SLuckey asked in the original post, what's wrong with your amp?  It may be something that can be resolved by the group.

Jack
Title: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: terminalgs on January 07, 2015, 01:52:18 pm



A local studio has several great 60's Ampegs. some are eyelet board, some are PCB boards.   It is impossible to notice a distinction in performance of tone between the two.

a Feb 1966 PCB Ampeg is a early example. The first was a B15N in 1965.

If you have a broken board, or a flood victim, that's one thing, but if you are just dissatisfied with the appearance or labor under the notion that PCBs aren't  'sixties enough', you should sell it and buy a earlier one.   you'll save lots of time, lots of money, and maintain the originality (value) of the one you want to gut and rebuild.


RE 'sixties enough': PCBs were used on the Apollo mission rocket systems.  I don't know what is more sixties than the Apollo missions.

Title: Re: Hoffman Eyelet Boards - Create your own custom Eyelet board
Post by: Walter78 on January 09, 2015, 05:27:14 am
Thank you terminalgs you made me think about the problem and I found out it was just in my mind. My amp sounds great who cares if it doesn't look like 60s.