Maddog's Lamington Jr Amplifier build diary

For something to do while waiting for Dingotone to dry I recently bought a bunch of pedal kits and a couple of Lamington Amp Kits

So in this thread I will be building a Lamington Jr 2w valve amplifier

This kit is billed as ideal for beginners as it uses a 12v plugpack rather than 240v mains

You can purchase these as a kit or the instructions on their own. One thing I have noticed with the kits is that the parts supplied don't always match up with the parts list in the manual, mainly the caps not quite matching up (there were a couple I couldn't identify as well) and the pots supplied being 1M linear instead of the 500k Audio listed.

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The chassis as supplied

Attachment 19295
one of the holes was missing as well the grommets (the other kit has them) so I bought some grommets from clark rubber and drilled the missing hole and enlarged the other one to fit the grommets. Drilling the thin sheet metal proved to be a challenge and while the end result wasn't pretty, the mess was covered by the grommets.

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Hardware installed and the first wire started. I need to get an underside shot which I'll do tonight.
I decided to stick with the supplied pots as getting the 500k pots with the same hole mount size was a pita.

awesome project Maddog, the amp chassis looks like a shallow cake tin haha

good idea to pass time while the DT cures. You have proven this is another option to buying another guitar kit !

Can you please post the link to these amp kits ? I'd love to have a crack at building one

cheers

Quote:

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Originally Posted by wokkaboy

awesome project Maddog, the amp chassis looks like a shallow cake tin haha

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It is. That's why they're called Lamington amps

you can buy them from www.valveheaven.com

cheers Maddog they have some cool looking amp kits!

Seriously thinking of having a go at building a Lamington Amp this year.

Same here doc. Thanks for doing this for us Maddogm

Here's an underside shot having installed the hardware and just getting started on wiring the power circuit:
Attachment 19347

looks good Maddog. Are the instructions pretty easy to follow ?

Quote:

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Originally Posted by wokkaboy

looks good Maddog. Are the instructions pretty easy to follow ?

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Yeah, so far. The main issue I've had was when they referred to the missing grommets. They do require reading ahead a bit so you have an idea of what a current step interacts with. It includes testing as part of the process as well as schematics and wiring diagrams which help you visualise what the steps are describing.

Jaycar Electronics stock rubber grommets, so if you buy a Lamington Amp kit and you find that the grommets are missing you can buy them from your local Jaycar Electronics store.


Rather than buy a kit, I might try and see if I can source all the parts myself and build my Lamington Amp on a diecast Aluminium box from Jaycar Electronics, needless to say, I'll need to buy a construction manual first though.

Incidentally, I've watched a few Lamington Amp demo videos on youtube and have been quite impressed by how good they sound, kind of Marshall-like, but I could be wrong, nice clean tones.