Hey Clark, I'm still in the Richardson/Plano area. Tomorrow I'm in training at Ericsson and might be done early. Free this weekend too if you want to meet up and I'll show you the design on paper. The softcopy though is back in WA on my desktop.
Massive and looks very very capable to support an A1.2!!
Massive and looks very very capable to support an A1.2!!
50 volt secondaries. It's brother is on the floor behind me. I'm rounding out of the fabrication stage for these. All I have left is the faceplate, top plate, and bottom plate. All quite underated.
My next step is to start fitting pieces and aim for 60v +- on the rails. I will need to calibrate a resistor bank that will hang off the back panel behind an old car amp heatsink that will fit perfectly back there.
C
My next step is to start fitting pieces and aim for 60v +- on the rails. I will need to calibrate a resistor bank that will hang off the back panel behind an old car amp heatsink that will fit perfectly back there.
C
Unfortunately I have already drilled and tapped the fet locations...would be a shame to redrill and tap for your new board. I might also end up having a fet too close to the seam between extrusions. I'm already a little close to the edge on 2.
Here is another picture. This is actually the first one's brother before I drilled for the fets. Damn my elbow is tired!!! My wife just loves how it compliments the colors and appointments in our living room.
C
Blues, I'll see what I have on my plate tomorrow. I'm pretty sure it's a go. Give me a ring.
214 789-9050
Here is another picture. This is actually the first one's brother before I drilled for the fets. Damn my elbow is tired!!! My wife just loves how it compliments the colors and appointments in our living room.
C
Blues, I'll see what I have on my plate tomorrow. I'm pretty sure it's a go. Give me a ring.
214 789-9050
Attachments
Clarkcr said:
Looks to me like the best Aleph candidates reside in Texas, no big surprise.
You're placing the boards in the bottom section, Mr. C.C. ?
I think I'm going to put the board up high as close to the rear of the chassis as I can. This will be spacially the farthest point from that toroid. I'm thinking of building a can around the toroid and filling it with lead buckshot (we can buy this at any corner store here in Texas). I am thinking this would go a long way to deaden any interference from the field of the toroid. Any suggestions in packing the toroid can with something that weighs a little less?
I may also mount the board vertically and parralell with the rear faceplate. I can't remember off had how the board is laid out, but this may allow my leads to and from the board to be as short as possible.
Thanks for the input. I am but a flea in the DIY jar of audio vasalene.
I may also mount the board vertically and parralell with the rear faceplate. I can't remember off had how the board is laid out, but this may allow my leads to and from the board to be as short as possible.
Thanks for the input. I am but a flea in the DIY jar of audio vasalene.
Clarkcr said:
That is likely to create a shorted turn, and you will end up with a pool of molten lead on the floor...
A-number-1-Clark,
i always liked those big metal pans around toroids in Threshold amplifiers.
(and Mark Levinson's, sorry Boss).
Getting my hands on the pans( and the Holden&Fisher's ) Mr Pass used in his amplifiers was impossible overhere. Believe me, i tried.
I put toroids in cheap alloy outdoor cooking pots, filled with thermal epoxy resin.
Some time ago someone on a dutch audio forum gave me the tip to do this twice, a second alloy pan over the first, and fill the gap between them with epoxy resin too to isolate one from the other.
If only the outer makes contact with the chassis humming days should be over.
Sounded logical to me, so i am going to try that on the Aleph's.
Next to the cereal, right?
Yep, buckshot usually deadens any interference !
Personally i see myself as a turd in Nelson Pass's A....
i always liked those big metal pans around toroids in Threshold amplifiers.
(and Mark Levinson's, sorry Boss).
Getting my hands on the pans( and the Holden&Fisher's ) Mr Pass used in his amplifiers was impossible overhere. Believe me, i tried.
I put toroids in cheap alloy outdoor cooking pots, filled with thermal epoxy resin.
Some time ago someone on a dutch audio forum gave me the tip to do this twice, a second alloy pan over the first, and fill the gap between them with epoxy resin too to isolate one from the other.
If only the outer makes contact with the chassis humming days should be over.
Sounded logical to me, so i am going to try that on the Aleph's.
Next to the cereal, right?
Yep, buckshot usually deadens any interference !
Personally i see myself as a turd in Nelson Pass's A....
Hey that's a cool idea!! Thanks. I'll use two bowls, the first filled with epoxy, and the second with buckshot. Nice and heavy. Although, I am thinking buckshot is slight overkill.
Anybody know where to find those aluminum cans in this country?
C
Anybody know where to find those aluminum cans in this country?
C
Overhere they are sold practically everywhere, 3 pans of different sizes with a twist lid on top, can be found for $5 the set:
- diy stores
- warehouses
- outdoor and sport shops
- even seen them on open air markets and gas stations.
Not sure about Texas, my Texas friends find a lot of the stuff we do here peculiar.
- diy stores
- warehouses
- outdoor and sport shops
- even seen them on open air markets and gas stations.
Not sure about Texas, my Texas friends find a lot of the stuff we do here peculiar.
Clarkcr said:
jacco vermeulen said:Overhere they are sold practically everywhere, 3 pans of different sizes with a twist lid on top, can be found for $5 the set:
- diy stores
- warehouses
- outdoor and sport shops
- even seen them on open air markets and gas stations.
Not sure about Texas, my Texas friends find a lot of the stuff we do here peculiar.
Cake tins, try a baking goods store.
Anthony
I was actually referring to the nice heavy variety that the Krells and Mark Levinson's of the world use. I have a camping set that is made of stainless that could be polished to look like chrome.....that might be cool.
C
C
macka2 said:
Ian, you're getting there my friend.
For the bigger is better crowd...0.5W resistors can fit on all 0.25W R positions.
Cant wait for the outcome, Macka.
Now show us some nice ladies again, mate.
Now there is a thought, maybe i could search for the right diameter, and make polished stainless steel toroid pots myself.
I have 4" stainless steel piping in my garage, and bought a secondhand pro polishing device, to make SS sidebars for my Chevy, the SS welding i do myself.
Been using 0.6 watts for years, friend.
Now show us some nice ladies again, mate.
Now there is a thought, maybe i could search for the right diameter, and make polished stainless steel toroid pots myself.
I have 4" stainless steel piping in my garage, and bought a secondhand pro polishing device, to make SS sidebars for my Chevy, the SS welding i do myself.
Been using 0.6 watts for years, friend.
jacco vermeulen said:
All work and no play makes a dull boy.
That said there are'nt to many woman on this forum!
Ian
Some images if it'll fit
Mirror images of Board I showing component lay-out...
Been in contact with boardhouse and they're getting ready for the prototype run.
Mirror images of Board I showing component lay-out...
Been in contact with boardhouse and they're getting ready for the prototype run.
Blues,
Absolute beauty! I hope you are going a group buy. I have some heatsinks and they are screaming Aleph 2 to me. Loud little suckers those hunks of aluminum.😉 😀
Absolute beauty! I hope you are going a group buy. I have some heatsinks and they are screaming Aleph 2 to me. Loud little suckers those hunks of aluminum.😉 😀
- Status
- Not open for further replies.