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Old 8th October 2006, 08:13 AM   #601
lineup is offline lineup  Sweden
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Quote:
Originally posted by Tyimo
Hi Mads!

Don't you want to make a PCB for the Atlantis MM pre??
I like your PCB design style!

Greets:

Tyimo
Where can I find best info on
Atlantis MM preamp

I guess it is a RIAA phono amplifier, based on Tubes.
Am I right?
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Old 8th October 2006, 06:13 PM   #602
hoktuna is offline hoktuna  Sweden
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Hi mad_k!
I want to buy 6 boards rev.c
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Old 9th October 2006, 04:57 AM   #603
Tyimo is offline Tyimo  Hungary
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Hi Lineup!

Quote:
Where can I find best info on
Atlantis MM preamp

I guess it is a RIAA phono amplifier, based on Tubes.
Am I right?
Mads posted it some "page" before.

No, it is a JFet based RIAA MM pre.

Greets:

Tyimo
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Old 9th October 2006, 05:45 AM   #604
Mad_K is offline Mad_K  Norway
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Quote:
Originally posted by Tyimo
Hi Mads!

Don't you want to make a PCB for the Atlantis MM pre??
I like your PCB design style!

Greets:

Tyimo

I have made countless pcbs for Atlantis. Here's the rev.c layout (2 stereo pcbs):
Attached Files
File Type: pdf atlantisrcx2.pdf (64.6 KB, 283 views)
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Old 9th October 2006, 05:58 AM   #605
Mad_K is offline Mad_K  Norway
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Atlantis Rev.C assembly drawing:
Attached Files
File Type: pdf atlantisrc_a.pdf (67.0 KB, 229 views)
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Old 9th October 2006, 06:00 AM   #606
Mad_K is offline Mad_K  Norway
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Atlantis Rev.C BOM:
Attached Files
File Type: txt atlantisrc.bom.txt (1.2 KB, 120 views)
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Old 9th October 2006, 06:02 AM   #607
Mad_K is offline Mad_K  Norway
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Atlantis Rev.C schematic again:
Attached Files
File Type: pdf atlantisrc.pdf (81.3 KB, 278 views)
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Old 9th October 2006, 07:29 AM   #608
lineup is offline lineup  Sweden
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Quote:
Originally posted by Tyimo
Hi Lineup!
Mads posted it some "page" before.

No, it is a JFet based RIAA MM pre.
Quote:
Originally posted by Mad_K
I have made countless pcbs for Atlantis. Here's the rev.c layout (2 stereo pcbs):
Quote:
Originally posted by Mad_K
Atlantis Rev.C schematic again:
Thanks, Tyimo for info and Mad_K
for full layout-pcb for Atlantis JFET MM Phono RIAA PreAmplifier

JFET amplifiers schematics are always interesting to look at
Thanks

I put it into my Mad_K folder.
In my Tyimo folder I have several other good schematics.


lineup even has got a lineup folder with things contributed by him
not very empty folder!
http://lineup.awardspace.com/
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Old 9th October 2006, 08:02 AM   #609
lineup is offline lineup  Sweden
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Thumbs up Atlantis JFET RIAA phono preamplifier

I have had a closer look at Atlantis RIAA amplifier.

Is it okay to ask questions about it in here
or maybe better I would start a topic in Analogue forum
To explore a bit, this nice and straightforward JFET MM Phono RIAA.

There area couple of things I cant understand how it can really work.
Maybe because I have not designed very much using 2SK170GR JFET.


Regards
lineup will design some RIAA and/or Microphone amplifier project
for his website, later
http://lineup.awardspace.com/
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Old 9th October 2006, 08:12 AM   #610
Mad_K is offline Mad_K  Norway
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The Atlantis is just a cascoded version of a well known standard JFET RIAA design called "The Pacific". There are a lot of variations floating around this forum and on the web

Here's some links:

Ultrasimple mm/mc RIAA preamp 2

http://www.diyaudio.com/forums/showt...ht=#post252211

folded-cascode FET/opamp MC phono

http://www.passdiy.com/projects/pearlono1.htm

etc
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