Powering up a aleph 5 procedure.

[jleaman]

I’m building my aleph 5 as we all know. I have a question I know that you don’t just plug it in you have to power it up using a varaic I have access to a scope and wave generators. My questions is what voltage should I fire the amp up to (per rail.) and where are the test points that I can test to see if I should go further.

 

[jleaman]

ttt


common need answers people HEHEH

 

[Peter Daniel]

I don't know exactly how your front end board is designed, but you can probably check it first and then the whole amp. I slowly bring the variac up from 0V and look at the scope and current draw. If everything goes well, I go up to full rails.

 

[till]

OK, i did´nt built an aleph until now. But the Zen amps i built i double checked visual the wireing and pluged them in. No problem.

 

[jleaman]

im using kristians boards the aleph 5.

 

[PedroPO]

JUICE it up full power man !!

don't be a pussy!

(when I 1st powered mine, i must confess that I hide besside a chair, you never know if a cap might blow up hehehe)


send the picsture when you have them, mine will be done( well, almost) in a day or two

 

[jleaman]

yeah id love to plug it it but as my dad says to me if i do ill have a free smack comming from his palm because that is not the corect way to power up amplifiers. iv blown up my share of amps thank you LOL..

no more..

j'

 

[PedroPO]

Pussy x 2

I just couldn't wait.

My first plug in was a failiure. no sound @ all..🙁

then corrections were made and there it was - the sound.( I must say that I hide myself again 😀 (just in case )

here is a pic of my amp at his curent condition:

 

[PedroPO]

another one, back side

 

[PedroPO]

last one,

final preview of the final result.

It will not be the final version, but I couldn't wait, so I'll manage with this front panel.

It is still missing a kind of base to permit the air to enter the sinks.

any ideas?

maybe a block of concrete? easy to build and cheap.

 

[jleaman]

does it get warm after a whyle. ? if not dont worrie about it. and i would have used aluminum of the front face plate.

 

[PedroPO]

I only used it with 5cm gap at the bottom. the temperature was about 50ºC after 3hours, so I think some kind of tall feet were nice 😉

I used wood also to try french polish. ITS GREAT!!!

wassup with the www.diyaudio.com ???

 

[jleaman]

i duno what happened it is gone for now though.

oh well..


i wonder how hot my alephs are giong to get with my heat sinks. but then again im puttin a small van in the bottem to move some air the fan will run at 7.8v to move air quietly.

 

[PedroPO]

don't be worried about the temperature too much.

only the two sinks were the boards are attached are that hot.

 

[jleaman]

HUH and in english please..

 

[PedroPO]

see the pics.

I have 3 sinks/ch. the boards with the fets are attached in the middle of two sinks, so the heat doesn't reach the third one.

 

[jleaman]

ohhh now if i were you i would have put 2 fets per sink ehhe : O ) but hey that is me.. probably would have worked a bit better also.

 

[PedroPO]

looks cooler this way.

I took the chance, and since the sinks aren't too hot i'll leave it this way.

 

[jleaman]

coo coo i think my av800 will be a good project also.

: O )

 

[PedroPO]

what is that??