My "audiophile" LM3886 approach

[AndrewT]

Lukio does not claim it is derived from Mauro's Evo.

But Linux wrote

Dual Howland (2x LM3886) Evo2 (derived from MyRef Rev C/E, 40W into 8 ohms, ~80W into 4 ohms) monoblock board, dimensions 127mm x 100mm (~30% larger than present V1.4).

All sentences with brackets must read and make sense and give the same message with the contents of the bracket removed.

That brings Linux's comment to read
"Dual Howland Evo2 monoblock board, dimensions 127mm x 100mm"
Linux is clearly stating that the PCB is based on Evo2

Your

I'm not sure it's enough to say

cannot be right.

[ClaveFremen]

Originally Posted by AndrewT

Lukio does not claim it is derived from Mauro's Evo.

You're right Andrew but I can't see either where Siva claims that...

On the PCB we can read 'Derived from MyRev RevC'

The unique possible referral is the unhappy choice of the name, isn't it?

Or I've misssed something?

[ClaveFremen]

Originally Posted by AndrewT

That brings Linux's comment to read
"Dual Howland Evo2 monoblock board, dimensions 127mm x 100mm"
Linux is clearly stating that the PCB is based on Evo2

What I understand from that sentence is that Evo2 is the name Siva gave the project.

But I could be wrong, I suppose we should wait Siva's clarification on it.

[linuxguru]

Originally Posted by ClaveFremen

What I understand from that sentence is that Evo2 is the name Siva gave the project.

Yup, this is actually closely derived from the MyRef Rev C, not Mauro's proprietary Evolution design (of which the only publicly available schematic is an incomplete one in an Italian audio magazine, AFAIK). The placement of the large Elcos has a superficial similarity to the those in published pics of the Evolution, but the resemblance ends there - the layout is entirely from scratch, though portions of it are similar to the Twisted Pear V1.2, my V1.3 and V1.4 boards (which were already close to optimal for a single-Howland layout).

I lifted the name Evo2 from a Mercedes-Benz performance car from the '80s, which was derived from a stock 190E baby Benz (one of my favourite cars). Similarly, this dual Howland is simply a hot-rodded version of the stock MyRef Rev C/E, no more. I posted the schematic on the forums last year, but didn't get around to completing the layout and getting it sent for fabrication until this month. A glance at that schematic will confirm that it's really a MyRef derivative.

I can change the name from Evo2 to MyRef2, if that brings more clarity regarding its origins - though it still has the potential to ruffle some feathers, like my previous derivative design, the MiniRef. I'm open to suggestions.

[bcmbob]

I like "MyRef_V.X2" or "MyRef_X2V". Even sounds like a fancy car - or a super fast computer

[bcmbob]

"MyRef_V.X2e" Yea, That's the ticket!

[PreSapian]

hehe V.X looks like an emoticon. does sound good, though.

myref_redux?

otoh, my myref's about to go full exotica with some vcap teflon caps that i'm seriously considering from partsconnexion. oh they also have polystyrene caps in all the values i need. what do you know..

[ClaveFremen]

Originally Posted by linuxguru

I can change the name from Evo2 to MyRef2, if that brings more clarity regarding its origins - though it still has the potential to ruffle some feathers, like my previous derivative design, the MiniRef. I'm open to suggestions.

I suggest you to follow the same guidelines Mauro gave me for the Fremen Edition.

Use a name that makes clear that your amp is not an official My_Ref (or worst MY_Evo) revision.

Something like My_Ref Indian Twins will do

[bcmbob]

What about moving completely away from the reference and start using "LM3886" something or other - maybe LM3886_X2e or the like. That would simplify much of the issue. A possible fork in the road.

[weskoki]

Myref MKII maybe