Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: dbishopbliss on February 06, 2016, 09:59:33 am

Title: Yet another Vox AC-15 build
Post by: dbishopbliss on February 06, 2016, 09:59:33 am

I started my build. I was planning on logging my progress on this board, but then I thought it might be better to create an actual blog to document the build. This way, I can post plenty of pictures without worrying about their size. However, I will post progress here as well so people can see how things are going.


I've already wired up the board. I started with the jumpers on the top of the board.

(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/1454766336.png)


Then I wired the jumpers underneath the board. I used push-back cloth covered wire.


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/1454766298.png)

Title: Re: Yet another Vox AC-15 build
Post by: sluckey on February 06, 2016, 11:19:32 am

I was wondering if anyone else was gonna tackle this project. Good start. Looking forward to following along. I think you'll like this amp.

I put a different jump switch mod in my amp last summer. It only has one input jack and one mini 3-position toggle switch. If this is something you may be interested in I can put this circuit in the mods pdf on my website.

Title: Re: Yet another Vox AC-15 build
Post by: dbishopbliss on February 08, 2016, 10:52:25 am

I decided to have a single input with the channels permanently bridged. I will use the volume controls to "switch" channels if I need to.  That is, turn EF86 all the way down if I don't want to hear it.  Turn the 12AX7 down if I don't want to hear that channel. I tend to set and forget, so I don't expect this to be an issue for me.


I started drilling the chassis this weekend.  I have the sockets installed and will start on wiring the heaters this week some time.

Title: Re: Yet another Vox AC-15 build
Post by: dbishopbliss on February 08, 2016, 10:55:13 am

By the way, here are some shots of the board for those who like looking at pictures (like me).


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/338052300_orig.png)


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/266799826_orig.png)

Title: Started drilling the chassis
Post by: dbishopbliss on February 09, 2016, 10:20:18 am

I started working on the chassis. Started out by drilling pilot holes then I used step bit to make them the right size.
(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/713587651.png?259) 


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/281378139.png?260)


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/889508892.png?261)
When I got done with the round holes I started on the rectangular hole for the IEC jack.
(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/341272046.png?180)

Title: Re: Yet another Vox AC-15 build
Post by: Willabe on February 09, 2016, 11:21:29 am

Looking good, turret board and chassis!  :icon_biggrin:

How did you cut your IEC hole? You did a great job on that. 

Title: Re: Yet another Vox AC-15 build
Post by: dbishopbliss on February 09, 2016, 06:42:26 pm

Quote from: Willabe on February 09, 2016, 11:21:29 am

How did you cut your IEC hole? You did a great job on that.

I started with a drill, then went to a dremel tool, then I finished with a metal file. It was a pain.


If you click on the link in my signature you can read more details and pictures.

Title: Re: Yet another Vox AC-15 build
Post by: Willabe on February 09, 2016, 07:45:48 pm

Quote from: dbishopbliss on February 09, 2016, 06:42:26 pm

I started with a drill, then went to a dremel tool, then I finished with a metal file. It was a pain.

Ok, that's how I cut mine, except I only dill 4 holes, 1 in each corner.

Thanks.  :icon_biggrin:

Title: Sockets and Standoffs Installed
Post by: dbishopbliss on February 10, 2016, 08:04:40 am

Not much progress, but a little bit at a time... I got the sockets and standoffs installed last night.


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/287045361.png?402)


(http://blissamps.weebly.com/uploads/7/2/4/8/72487915/110215984.png?381)

Title: Re: Yet another Vox AC-15 build
Post by: Ed_Chambley on February 10, 2016, 11:44:20 am

Coming along nicely.  You are gonna like it. :icon_biggrin:

Title: Re: Yet another Vox AC-15 build
Post by: dbishopbliss on February 13, 2016, 03:57:45 pm

Quote from: Ed_Chambley on February 10, 2016, 11:44:20 am

Coming along nicely.  You are gonna like it. :icon_biggrin:

i had a freak mac n cheese accident today and now i have 3 stitches in the tendon of the middle finger on my right hand. No amp building for 6 weeks. :-(

Title: Re: Yet another Vox AC-15 build
Post by: Willabe on February 13, 2016, 05:54:40 pm

Very sorry to hear that. Listen to the doctors, you want that tendon to heal fully.