The biggest cost are the heatsinks the aluminium is quite cheap.
I use 10mm for the front and 3mm everywhere else.
I will be using 90 degree angle bracket so that the aluminium top plate will sit flush with the heatsinks (ie recessed).
can we count this one in this thread ?
http://www.diyaudio.com/forums/pass-labs/174674-papas-koan-papas-surprise.html#post2320759
http://www.diyaudio.com/forums/pass-labs/174674-papas-koan-papas-surprise.html#post2320759
Hey that looks really neat. I like the symmetry! 🙂
Do the central heat sinks dissipate enough heat mounted that way?
Yes, I use raised power supplies (32V) and increased bias (2,8A) for ~50W
Heatsinks are ~23C above ambient. Note: Also the front and back panel are dissipating as well as the 2 panels that hold the amp modules.
I made the whole thing in such way that I could add another 2 heatsinks in the middle.
I use a 100x50mm Alu tube that is cut in half. This fits neatly between the side panel and the heatsink. A friend of mine created nice slots in the top and bottom to keep the inside of the box cool as well.
I will replace this one by an Aleph-J-X i'm currently building. Recently discovered the advantage of going balanced and now I will replace my Aleph 30 as well.
Will post pics as well when finished.
Will post pics as well when finished.
Mr.Pass Present just arrived...
really don't hope to get such rare and really needed thing
a pair of SJEP120R100 , so locking for something to build on it
really don't hope to get such rare and really needed thing
a pair of SJEP120R100 , so locking for something to build on it
Looking good thanh. Are you getting the aluminium cut on a guillotine and finishing the edges your self or laser cut?
3mm plate is cut on guillotine.
10mm was cut by saw. Any rough edges I sand back if required.
Originally I wanted perfection, but I realised 90% perfection is much quicker. To get the extra 10% it takes a lot of work, which means a lot of time.
I'd rather spend that time building and listening to more amps, hence the reason for building 7 cases (42 is too many). With 7 cases I can compare several designs at any one time, and in the process hopefully learn something.
10mm was cut by saw. Any rough edges I sand back if required.
Originally I wanted perfection, but I realised 90% perfection is much quicker. To get the extra 10% it takes a lot of work, which means a lot of time.
I'd rather spend that time building and listening to more amps, hence the reason for building 7 cases (42 is too many). With 7 cases I can compare several designs at any one time, and in the process hopefully learn something.
Hello everyone,
My first post in this beautiful forum.
Just my little 50kg Aleph J. Black and beautiful. I am thinking of a status LED, but until today I always know when its on by touching it 😀
Right now i am looking for something smaller... the Alph Mini 😀 Seems i am infected by the Papa-Virus
My first post in this beautiful forum.
Just my little 50kg Aleph J. Black and beautiful. I am thinking of a status LED, but until today I always know when its on by touching it 😀
Right now i am looking for something smaller... the Alph Mini 😀 Seems i am infected by the Papa-Virus
