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Old 13th October 2003, 12:32 AM   #1
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Default external trafoos, how?

Hi, I was happely building on my Aleph5 enclosure today. However I get a feeling things get a bit too crowded inside.

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It measures 310 * 300 * 310 mm (inside). The original plan was that the PCBs would be vertically at the left and right side of the "trafo block" (separated by 10 mm of aluminium). There is 80 mm space at each side. It fits, but final soldering and measuring will be a bit difficult. I should have made it 20 mm or so wider

I could keep the trafo's (and rectifiers) in a separate case at the outside. I use the power supply schema of Kristijan
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using two 650 VA Amplimos and 20*22000 uF elcos. There are 3 wires from the rectifiers to the elcos for each channel. These will hardly be longer then if I build eveything inside I think.
Any suggestions for the connections in between?

Maybe Neutrik Powercons?

Ronald
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Old 13th October 2003, 09:53 AM   #2
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I used to use regular Neutrik XLR connectors for external power supply.They are rated at some 15Amp. or so ,accept thick cables and are very well built.
Bartek
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Old 13th October 2003, 09:55 AM   #3
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Old 13th October 2003, 09:57 AM   #4
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And some more
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Old 13th October 2003, 05:37 PM   #5
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Looks tight but short wires could be pretty interesting?

If there is no space at all I think I'd split the PSU after the first 2 caps.

p.s. still think we should meet sometime, have beer talk about DIY pass products
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Old 13th October 2003, 06:58 PM   #6
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Hi Tazzy,

Of course youre welcome to drink a beer after the Alpeh is making music. Probably will take another month or 2. I hope it will be ready before Xmas, then I have completed it in exactly 1 year.

I hope my big fat Lambda speakers and active xover will be finished too by then. Then I can blow off the needles from the xmas tree (playing Goldfrapp's "Train" ).

Btw I also want to mount the mosfets with an U shaped bar (aluminium profiel), only strait onto the heatsink. In that way I hope to avoid using tiny M3 bolts, but M5 instead.
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Old 13th October 2003, 08:28 PM   #7
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Had the same thought for my still unfinished zen amp
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Old 16th October 2003, 05:39 PM   #8
Cr3ator is offline Cr3ator  Netherlands
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Default 22mF Caps

Hi Duck-Twacy,

As I'm also living in The Netherlands (Enschede) and busy building my Aleph 5's, I'm wondering where u bought those 22.000uF caps and the 2.2mH coils?

Erik
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Old 5th January 2004, 10:11 PM   #9
Jaac is offline Jaac  Netherlands
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dear Duck-Twacy

if you plannig to build the power supply seperated from your amp you should consider some good connectors
>> first option i think are those powercons from neutrik.
>>second option is some wieland multi connectors. those their using in the theatre buisness.

this i mean by using good connections !!!!

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first its getting hot en the resistance is getting higher then the temp is olso getting higher and then balm 2 cm of pure copper is burned !!

gr jaac from tuk the netherlands
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Old 6th January 2004, 07:24 AM   #10
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Nasty!
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