MiniA & BoZ integrated amp

Stabist · 11th March 2004, 11:27 AM

Hi!

Like Grey said - after buying all parts for "the big projects" there are always some "leftovers" - and so was in mine case - so I've decided to build integrated amp - consisting out of MiniA and BoZ - well - actually it is still in production - so I can't comment on the sound yet

Stabist · 11th March 2004, 11:31 AM

I still have some problems with the arragnement - it's quite small chassis - actually this housing was originally meant to be used for my Zen v4 - but it was never finished - untill now

Stabist · 11th March 2004, 11:39 AM

3

Stabist · 11th March 2004, 11:40 AM

4

stappvargen · 11th March 2004, 12:47 PM

With leftovers as good as this, I wonder what the original meal looks like!
Great job!

/Niclas

Stabist · 11th March 2004, 01:10 PM

Hehe Niclas

Well - because you've allready asked

- this is the original meal:

Penultimate Zen - finished - photos

Stabist · 11th March 2004, 02:14 PM

OK to add some additional infos:

- front panel is made out of plexi glass (265 * 165 * 3)mm - it cost me 6Eur - quite expencive infact - compared to other costs
- heatsinks were free of charge

- all ather Al parts cost me around 11Eur
- MiniA PCB are really made out of leftovers - after ordering parts for A3, A5, AL, BoZ and Zen v4 - there was quite a lot resistors, caps, etc left ...
- very similar story is hidden behind BoZ - after modifying my BoZ - there was a bunch of caps, etc laying around - first I intend to build it with those parts - sfterwards I've decided to use MKP caps instead of MKS ones - so it cost me cca 16Eur to make it ... Otherwise it woulb be more than half cheaper ...
- PSU caps are waiting in my "storage room" for couple years to be used (Sprague 36D - 46.000uF/20V each)
- first I intended to use 4 psc od irfp240 that were left from matching the ones for A5 - but then again - I have 8 of them left - and they are matched - so I can build whether A3 or even AX with them - so I decided to buy another fets - irfp250 - a local store just happened to have last 5pcs - for 2Eur/each - so I took all of them ...
- and the most expencive part - a transformer - first I intend to use 2 small (around 60-80VA) EI ones I had - but they are too noisy - so I ordered this "baby" - and because I also decided to make an integrated amp - I orderd it with 2x12V/5A and 2x25V/0,8A rails - maybe 120VA seems a little bit underpowered for MiniA - but I must say that this trannies are very well build - and can easilly work on "full" power for ages without any harm.

ASo after other small detailes - the whole costs for it are around 100Eur. I think it's still reasonable.

More about it after finishing it!

Stabist · 11th March 2004, 11:33 PM

I've just finished rear panel - so I couldn't resist not to send a picture or two here

Stabist · 11th March 2004, 11:38 PM

Another ...

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11th March 2004, 12:47 PM	#5
stappvargen diyAudio Member Join Date: Sep 2002 Location: Göteborg	With leftovers as good as this, I wonder what the original meal looks like! Great job! /Niclas

11th March 2004, 01:10 PM	#6
Stabist diyAudio Member Join Date: Sep 2002 Location: Slovenia	Hehe Niclas Well - because you've allready asked - this is the original meal: Penultimate Zen - finished - photos

11th March 2004, 02:14 PM	#7
Stabist diyAudio Member Join Date: Sep 2002 Location: Slovenia	OK to add some additional infos: - front panel is made out of plexi glass (265 * 165 * 3)mm - it cost me 6Eur - quite expencive infact - compared to other costs - heatsinks were free of charge - all ather Al parts cost me around 11Eur - MiniA PCB are really made out of leftovers - after ordering parts for A3, A5, AL, BoZ and Zen v4 - there was quite a lot resistors, caps, etc left ... - very similar story is hidden behind BoZ - after modifying my BoZ - there was a bunch of caps, etc laying around - first I intend to build it with those parts - sfterwards I've decided to use MKP caps instead of MKS ones - so it cost me cca 16Eur to make it ... Otherwise it woulb be more than half cheaper ... - PSU caps are waiting in my "storage room" for couple years to be used (Sprague 36D - 46.000uF/20V each) - first I intended to use 4 psc od irfp240 that were left from matching the ones for A5 - but then again - I have 8 of them left - and they are matched - so I can build whether A3 or even AX with them - so I decided to buy another fets - irfp250 - a local store just happened to have last 5pcs - for 2Eur/each - so I took all of them ... - and the most expencive part - a transformer - first I intend to use 2 small (around 60-80VA) EI ones I had - but they are too noisy - so I ordered this "baby" - and because I also decided to make an integrated amp - I orderd it with 2x12V/5A and 2x25V/0,8A rails - maybe 120VA seems a little bit underpowered for MiniA - but I must say that this trannies are very well build - and can easilly work on "full" power for ages without any harm. ASo after other small detailes - the whole costs for it are around 100Eur. I think it's still reasonable. More about it after finishing it!

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