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Old 2nd February 2012, 02:31 AM   #7181
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I had the caps! Paralleled up- ~1400u per channel; Simlic and Muse mix. Listened to a selection of tracks with and without bypass caps connected across R2.

Subjective hat on!

With the caps- a little less bass, as expected. What I also found was a lack of focus. Music was there, but w/o bypass caps I could better tell where instruments/voices were. With the bypass caps, it all seemed to blend together more.

I found with the caps there was little apparent gain in volume than w/o caps. So for now, no caps across R2. Should I give them some time to break in? Would that reduce lack of focus I hear?

I thought I would visit cart loading (R1) again. Up till today, it's been 150R, as I found higher R loads sounded a bit thin in the beginning. Now my Salas RIAA has had ~60 hours of play time to break-in. So I changed R load to 820R.

Sound with 820R is very good, smoother, less shouty vocals (slightly recessed, too). Better space definition of instruments and rhythm. Found myself toe-tapping! It's almost sounding a wee bit analytical. Volume 'seems' about the same.

I will experiment with ~3-500 R load next, in a few weeks. It's loud enough for good listening.

Cheers- Kent
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Old 2nd February 2012, 07:47 AM   #7182
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Cart loading it's very important.
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Old 2nd February 2012, 07:59 AM   #7183
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Quote:
Originally Posted by psgr View Post
Salas,

I see that you added more to the document, I took a quick look at it.

I recommend that you start using a version tracking schema for the riaa circuit, just like you do for the shunt and follow it. Imagine 30, 50 or 100 pages down this thread, if someone would want to reference a riaa circuit, he is going to say : ... the one posted on post so and so.

When I get a chance I will take a closer look at the new document.

Pete
Hi there
I was searcing for the PDF I have a paper copy of it found a while ago but can not find the link and go back to it

As it is realy good I would like to work from it and be nice if I can post the direct link to it so others may find it as helpfull as I have.

I have tried the "Finale" link but it takes me somewhere else
Help please

Also very handy to have.
Salas Simplistic NJFET Riaa Schematics - diyAudio

Tanks Merlin
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Old 2nd February 2012, 08:18 AM   #7184
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PDF link Simplistic NJFET RIAA

Quote:
Originally Posted by Bksabath View Post
Hi there
I was searcing for the PDF I have a paper copy of it found a while ago but can not find the link and go back to it

As it is realy good I would like to work from it and be nice if I can post the direct link to it so others may find it as helpfull as I have.

I have tried the "Finale" link but it takes me somewhere else
Help please

Also very handy to have.
Salas Simplistic NJFET Riaa Schematics - diyAudio

Tanks Merlin
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Old 2nd February 2012, 08:48 AM   #7185
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Hi Merlin
The PDF link you posted take me back to the top of this page same as the links I tried while searcing the forum.

Sometink wrong with what I am doing? or forum problem.

Tanks again.
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Old 2nd February 2012, 10:19 AM   #7186
AndrewT is offline AndrewT  Scotland
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The link at the top of post7184 takes me to post7151

I do wish Members would learn how to show links and post pics and etc.
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Old 2nd February 2012, 12:37 PM   #7187
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Quote:
Originally Posted by Bksabath View Post
Hi Merlin
The PDF link you posted take me back to the top of this page same as the links I tried while searcing the forum.

Sometink wrong with what I am doing? or forum problem.

Tanks again.
In the post is the PDF, but I attached for you here.
Attached Files
File Type: pdf Salas-RIAA-V1102F0.pdf (191.1 KB, 50 views)
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Old 2nd February 2012, 12:38 PM   #7188
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Quote:
Originally Posted by AndrewT View Post
The link at the top of post7184 takes me to post7151

I do wish Members would learn how to show links and post pics and etc.
Is for me your post Andrew?
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Old 2nd February 2012, 01:03 PM   #7189
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Tanks Merlin that is the link I was refering to and the one I used
Just wanted to post the merits where they belong.

I have made a new PCB (the drawing for it as is about 7C in the loft so not going there Today)

Is the almost standard Simplistic board on euro card size.

I have aded same loading for the cart that can be switched off
and few more mosfets at the imput.
Attached Files
File Type: pdf Simplistic almost standard020220.PDF (75.0 KB, 70 views)
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Old 2nd February 2012, 01:06 PM   #7190
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Default Power Supply Per Channel

Is it recommended to build a seperate power supply for each channel?
If building the Pre-pre and MC phono, are 4 power supplies recommended?
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