[bg4533]

Quote:

Originally Posted by Juergen I hadn't realized the US buffers were available. I have been watching for a Mall-Fi ad. How many do you have left?

~40 sets.

 

[steinchen]

Quote:

Originally Posted by ppl Holy Mollie I don’t know how 50 mA was the recommended Bias for the PPA V2 The PPA is a portable amp and the V2 Buffers are intended for low bias current operation. The useable Bias range is 10-30 mA above 30 mA you are over biasing the output stage of the V2 MY recommended Bias is 15-25 mA.

sorry, I messed some things up, I'm afraid. Measured voltage drop across R24/R34 (2.2 Ohms) and it reads 66mV and hits your 30mA recommendation.

Got the 110mV from a piece of paper on my desk, must have been for M³, time for cleaning up my desk I guess

btw, neither on Morsel's site http://www.elvencraft.com/ppav2/ nor on tangent's site http://www.tangentsoft.net/audio/ppa/amp2/ I can find infos or recommendations concerning setting up the bias. Adding one or two lines would probably appreciated by future builders.

 

[ppl]

Quote:

Originally Posted by steinchen sorry, I messed some things up, I'm afraid. Measured voltage drop across R24/R34 (2.2 Ohms) and it reads 66mV and hits your 30mA recommendation. Got the 110mV from a piece of paper on my desk, must have been for M³, time for cleaning up my desk I guess btw, neither on Morsel's site http://www.elvencraft.com/ppav2/ nor on tangent's site http://www.tangentsoft.net/audio/ppa/amp2/ I can find infos or recommendations concerning setting up the bias. Adding one or two lines would probably appreciated by future builders.

Yes i just noticed this i sent tangent a pdf on this and the advantages of the current mirrors so maybe he has not had time to compile it yet. maybe ill host these on another site if this info don"t pop up elcewhare

 

[Glassman]

has anybody else received and assembled the buffers yet? I only heard from a few of you..

 

[MisterX]

Can you please post a schematic of the new buffer?
Or of you wish to keep it "under wraps" can you please send it to me via PM?

 

[Jeroen]

Quote:

Originally Posted by Glassman has anybody else received and assembled the buffers yet? I only heard from a few of you..

Mine were in the mail yesterday. Very nice looking little boards.

Before I start building them (which I don't think will take very long) I'll have to get around to building my PPA first...

Thanks Glassman!

 

[dviswa]

I did. Assembled the buffers but have no PPA

Still waiting to get my C1s.

Quote:

Originally Posted by MisterX Can you please post a schematic of the new buffer? Or of you wish to keep it "under wraps" can you please send it to me via PM?

 

[morsel]

Not publishing schematics of the Glassman buffer gives the impression that it is a commercial, proprietary product, or has something to hide. This secrecy is not in the spirit of the PPA project or the DIY community. Someone could examine his buffer and figure out the schematic if they were so inclined, but it would be far better if Glassman posted the schematic instead of teasing the community with vague claims. Is this DIY, or is this a commercial product?

 

[bg4533]

Quote:

Originally Posted by Glassman has anybody else received and assembled the buffers yet? I only heard from a few of you..

I of course have my buffers. The only buffers I have to compare are the old Intersil 5002s. So far I am pretty impressed. They sound much more transparent than the Intersils and instrument placement seems to have improved. I am satisfied.

 

[Sovkiller]

Glassman your PM is full, clean it up please!!!

 

[dviswa]

Glassman,

Those 4 pins included in the kit, what are they called? and where can I buy them? Planning on using them for various component rolling situations.

 

[BrokenEnglish]

Quote:

Originally Posted by dviswa Glassman, Those 4 pins included in the kit, what are they called? and where can I buy them? Planning on using them for various component rolling situations.

you could get them cutting the plastic off of an ic-socket...

 

[dviswa]

Broken English,

I guess I can. Hoping for a simpler/cheaper solution

 

[steinchen]

you won't get it cheaper, 8 pins cost about 0.45 EUR = $0.60
http://www.schuro.de/preisl-smd-adp.htm

or get something like "AW 122/20" or "SL 1X36G 2,54" ( http://www.reichelt.de )

 

[BrokenEnglish]

these are easier to cut:

20 pcs. for €0.26... not bad..