|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
74.36.227.224
In Reply to: RE: Anyone with direct experience with Angstrom Research from Italy? posted by morricab on April 16, 2015 at 03:54:56
Interesting PS. These images were from an eBay ad.
E
T
Follow Ups:
Wow, I've never seen protoboard in a finished high end product!
Point to point wiring , whats wrong .......? I'm more concerned about the tubes lying sideways...
Regards..
Edits: 04/16/15
That's not point-to-point wiring at all. That's protoboard. Protoboard is for prototyping, proof of concepts, etc.
"That's not point-to-point wiring at all. That's protoboard. Protoboard is for prototyping, proof of concepts, etc."
Exactly! That unit is a prototype. How many fully engineered products have a piece of electrical tape preventing capacitors from shorting to another component? The construction techniques may look like a piece of consumer gear to those who have never been in electronic manufacturing, but to the DIY builder this looks very familiar.
Proto board or not it's a Point to Point technique , no? It's actually way more time consuming than regular PtP and looks "cleaner" I would prefer the tube sockets to be attached with screw/nut to the board but I don't think it's a big concern. Looking at the PSU not many DIY guys build that way and non of the manufacturers I'm familiar with. I wouldn't mind buying that amp.
Looking at other gear from them, protoboard seems to be pretty common. I would be very nervous having octal sockets soldered to protoboard, as there isn't a lot of meat to solder to, and pulling a tube out of one of those sockets may rip the socket right off the board.
At least there is no electical tape covering the caps. I would be willing to accept that these are hand made units built in very limited quantities that preclude the use of PC boards. They still look like prototypes though; just like something engineering would hand off to manufacturing.
Prototype with full silk screen , i doubt it ,
Full silk screen isn't necessary, but if you want to put tube sockets on a PC board, you'll want through plated holes.
"Prototype with full silk screen , i doubt it , "
Well, your skepticism is well founded if this is a small outfit e.g., a few guys in a garage. But if this is a real company engineering, marketing and manufacturing all have to sign off on the front panel, so it needs to be established early on in the design process. Engineering will design the functionality, marketing will ensure it complies with the company aesthetic, and manufacturing will find a supplier and get engineering samples. The prototype will be built to look like a finished product as far as possible so that marketing can produce the promotional materials and it can be shown to the sales guys who talk it up with the distributors. That's how a real company operates. Again, if this is two guys in a garage, that may not be the case.
Why? Nothing wrong with that...military style :)
Sideways tubes are a big concern with some directly heated tubes, as the filaments can sag and hit the grid.
Often times the datasheet will specify how the tube is to be oriented if operated horizontally. The KT-88 sheet says pins 4 and 8 must be in the vertical plane.
Wondered if it stressed pins. Pic linked.
You'll have to see what the datasheets say.
Interesting design, Tubes in the wrong section thou ... :)
yes, the stuff is amazingly well made and uses tons of tubes...particularly for the power supply. Wild indeed...
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: