From Scratch Amp Building Chronicle - 6/13/10 UPDATED!!

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sah5150
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Re: From Scratch Amp Building Chronicle - 5/25/10 UPDATED!!

Post by sah5150 » Wed May 26, 2010 10:16 am

Doug H wrote:Cool, keep it coming
Will do!

Steve
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Re: From Scratch Amp Building Chronicle - 5/25/10 UPDATED!!

Post by jerrydyer » Wed May 26, 2010 12:27 pm

awesome.....ive been doing some additional reading and experimenting with the PI output caps. With the PPIMV the orange drops seem to have a special top needed to bring back a little of what lost oin the presence. food for thought. I know Im one of the dudes who sold you on Solen I really like those caps.
vids.
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by sah5150 » Fri May 28, 2010 5:27 pm

Finished.... Now the troubleshooting begins...

Click for finished amp image 1 - too large for board
Click for finished amp image 2 - too large for board
Click for finished amp image 3 - too large for board
Click for finished amp image 4 - too large for board
Click for finished amp image 5 - too large for board
Click for finished amp image 6 - too large for board

Steve
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by erigm » Fri May 28, 2010 6:24 pm

Oh crap, what happened?
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by erigm » Fri May 28, 2010 6:36 pm

Steve,

What shielded wire did you use, and where did you get it, and what is the part number, and have you had good luck with it, and is it a braided shield or foil with a drain wire? :D :lol: :oops:

I know that's a lot of questions, but I need to find a good shielded wire. Thanks for any help!
erigm
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by sah5150 » Fri May 28, 2010 7:40 pm

erigm wrote:Steve,

What shielded wire did you use, and where did you get it, and what is the part number, and have you had good luck with it, and is it a braided shield or foil with a drain wire? :D :lol: :oops:

I know that's a lot of questions, but I need to find a good shielded wire. Thanks for any help!
It is 22 AWG 1 conductor shielded PTFE from Apex JR,. It is braided shielded. No part number, just look on the linked page. Good stuff - stiff, but easy to use, I found...

Steve
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by sah5150 » Fri May 28, 2010 7:43 pm

Whaddaya mean? :)

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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by erigm » Fri May 28, 2010 10:38 pm

Oh, you said "troubleshooting". Troubleshooting to me means something isn't working right, so I figured you got it all together, tried it out, and something wasn't right. Did you fire it up yet? How did it sound?
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by erigm » Fri May 28, 2010 10:39 pm

sah5150 wrote:
erigm wrote:Steve,

What shielded wire did you use, and where did you get it, and what is the part number, and have you had good luck with it, and is it a braided shield or foil with a drain wire? :D :lol: :oops:

I know that's a lot of questions, but I need to find a good shielded wire. Thanks for any help!
It is 22 AWG 1 conductor shielded PTFE from Apex JR,. It is braided shielded. No part number, just look on the linked page. Good stuff - stiff, but easy to use, I found...

Steve
Very cool, thanks man!!! :D
erigm
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sah5150
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by sah5150 » Fri May 28, 2010 11:54 pm

erigm wrote:
sah5150 wrote:
erigm wrote: Oh crap, what happened?
Whaddaya mean? :)

Steve
Oh, you said "troubleshooting". Troubleshooting to me means something isn't working right, so I figured you got it all together, tried it out, and something wasn't right. Did you fire it up yet? How did it sound?
No, I haven't even plugged it in yet - I forgot to order tubes so I have to wait for a set and I was just too tired to start measuring stuff anyway... I'll save that for when the tubes arrive next week...

Steve
Last edited by sah5150 on Fri May 28, 2010 11:55 pm, edited 1 time in total.
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sah5150
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by sah5150 » Fri May 28, 2010 11:54 pm

erigm wrote:
sah5150 wrote:
erigm wrote:Steve,

What shielded wire did you use, and where did you get it, and what is the part number, and have you had good luck with it, and is it a braided shield or foil with a drain wire? :D :lol: :oops:

I know that's a lot of questions, but I need to find a good shielded wire. Thanks for any help!
It is 22 AWG 1 conductor shielded PTFE from Apex JR,. It is braided shielded. No part number, just look on the linked page. Good stuff - stiff, but easy to use, I found...

Steve
Very cool, thanks man!!! :D
No problem!

Steve
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by jerrydyer » Tue Jun 01, 2010 2:20 pm

you got that "im about to flip the switch " anxiety? I dont have a variac so for me its always a big rush.
vids.
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
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sah5150
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by sah5150 » Tue Jun 01, 2010 10:45 pm

jerrydyer wrote:you got that "im about to flip the switch " anxiety? I dont have a variac so for me its always a big rush.
I've got a variac plugged into an isolation transfomer! I'm ready for anything! :lol:

I've got some tubes coming in and I'll begin testing as soon as they get here...

Did you notice I put the Zeners for the Jose Master on a A1M DPDT push/pull pot like you suggested? 8)

Steve
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by jerrydyer » Wed Jun 02, 2010 1:20 pm

I didnt see, but thats a really cool option. last night I added a 15v zener and a 1n4007 to a non cathode following MV. it has 4 gain stages, regular MV with that diode config on a switch.. sounded really good really open and clear.
vids.
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
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Re: From Scratch Amp Building Chronicle - 5/28/10 UPDATED!!

Post by erigm » Wed Jun 02, 2010 2:41 pm

jerrydyer wrote:I didnt see, but thats a really cool option. last night I added a 15v zener and a 1n4007 to a non cathode following MV. it has 4 gain stages, regular MV with that diode config on a switch.. sounded really good really open and clear.
Does the clipping still occur before the tone stack?
erigm
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