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
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
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
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.
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.
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.
I do wish Members would learn how to show links and post pics and etc.
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.
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.
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?
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?
If building the mc pre-pre two supplies are required. It never hurts to go with more supplies, but you will be the one to judge if it's worth the effort.
Can the Pre-pre work well from a regulator for each channel and a single DC source? It's not the ultimate in seperation, but it might be enough to separate the channels. What do you think?
All schemes will work. How much ultimate separation and how many PSUs is up to anyone's sense of adventure.
As I see it, the pre-pre needs about 15v in for it' s own regulator, or 9v if you use another one. What is your raw DC?
None at the moment. I'm just looking for a game plan on how to proceed.
A 15v-0v-15v-0v transformer for each of the Pre-pre's regulators would cover it.
Would use an approriately higher voltage transformer for the MC phono channels.
I'm not crazy about point to point wiring, because so much can go wrong, then finding the problem becomes more difficult. This is why I posed the question as to how many power supplies is enough. Having everything in mono, down to the power cord would be great, but not always possible or worth it.
thanks,
Vince
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Yes, the post link still takes me to post 7151. There is no pdf in that post.
post7187 downloads a pdf.
I'm sure the link I posted takes me to post 4945 where is the PDF.
If the link at the top of post 7184 not takes you to post 4945, you would learn more how to show links and post pics and etc.
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