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jamesfeline 28th January 2013 02:55 PM

Studio 350 construction thread
Hi every one

Please find my build thread of my studio 350 power amplifier; I will post various pics of the build through the stages to final completion.
I have taken feedback from my other builds to include all through holes use grommets and all high voltage areas sleeved and double insulated etc.

the tiger is my motif (jamesfeline) and the eyes light up when the amplifier is on, newer designs will include the option that they change colour when the amplifier gets hot.

The above pic shows my power control module, this contains all the various fuses and the delay antisurge board for the transformer. The pcb is copper claded underneath and earthed etc.

The above pic shows the modded velleman speaker protection module, this area has been modded since this photo, I will upload the new pics tonight

The above pic shows the main power amp pcb being offered into postion, also only showing one main psu cap at the moment, this version of the studio 350 will be a light version as I started to run out of room for every thing. The transformers is 500va .. at a later date I will make a full blown version if I am happy with the sound of this one

I will upload some more photos tonight



rodolfo 28th January 2013 03:03 PM

excellent work ... looks fantastic

jamesfeline 28th January 2013 08:08 PM


Many thanks, had a little more progress tonight so will upload some more photo's when that camera battery has charged.

Has any one else out there made this amp? if so where you pleased with the quality of the sound?



jamesfeline 28th January 2013 08:59 PM


Some more photo's

the above photo shows both res caps fitted and the modded velleman protection module

The below photo shows the rear .. less is more ... I have used a heavey duty Neutrek connectors for power and speaker. I have included a earth lift switch for the Ov rail (dont worry the chassis is earthed) also to note that this is a monobock so one more to make after this.



jamesfeline 28th January 2013 09:01 PM

one more

Once the powersupply is completed the main amp board and heatsink can be dropped into place ...

TANDBERGEREN 28th January 2013 09:02 PM


Do You do the milling Yourself?

jamesfeline 28th January 2013 09:12 PM


The front graphics are laser engraved by a local company, I just provide the artwork etc.



TANDBERGEREN 28th January 2013 09:20 PM


Looks fine anyhow.

I am about to complete an order for an enclosure for my GM-clone.
And have some ideas of how i should "decorate" the frontpanel.
That is, until I saw Your. The Tiger is also my own avatar, given to me by a very good friend some years ago.
But no fear, I will not copy You. I have still some respect for others work.

Must look around now for some alternatives. Norwegian Forest Cat perhaps? :)

dirosoma 27th September 2013 09:12 AM

hi can you sen me the construction details of this amplifier includind setting and adjustments to my email address

burbeck 27th September 2013 01:20 PM

hi Nick
looking very good, exelent start. love the leds in the cat eyes.
where did you get the design from?
also what did you mod on the vellaman speaker protect board?

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