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Old 22nd May 2006, 06:38 PM   #1
veteran is offline veteran  Poland
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Cool GC/RIAA (simple) preamplifer

This is development of my simple GC preamplifier that I made some time ago. Now it's two, or even three in one

Preamplifier
Just a simple preamplifer using single op-amp.

RIAA preamplifeir
Basic preamplifer updated with few components working as a RIAA correction. This section is basing on VSPS preamplifier (great work RJM!). When it's made as dual mono - second board can work as another gain stage in this PRE or output buffer. This should bring to live my analog

Supply
Simple supply. Two fixed voltage regulators + CRC filter.

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Old 22nd May 2006, 06:49 PM   #2
VT67 is offline VT67  Belgium
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Veteran

You got my attention on this one!!
Keep us posted on the further development.

Regards
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Old 23rd May 2006, 02:34 PM   #3
veteran is offline veteran  Poland
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Preamplifier is working. No hum or any other 'special effects'. Picture below show this board in standard, stereo configuration.

documentation

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Old 23rd May 2006, 04:12 PM   #4
es44 is offline es44  Denmark
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Now we only need to know where to get boards

Nice layout, looks handy.

best regards
Ebbe
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Old 23rd May 2006, 06:40 PM   #5
veteran is offline veteran  Poland
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PCB is quite small and locating another channel like a sandwich makes it even smaller

I have got about 5 gold plated sets that I don't need, so if You are interested...
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Old 23rd May 2006, 06:47 PM   #6
VT67 is offline VT67  Belgium
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Yes please!!

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Old 23rd May 2006, 07:24 PM   #7
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Hi

Those look great!

RIAA preamp boards too .. ?

I'm taking a stereo set then please!

grzz,
Thijs Schrama
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Old 23rd May 2006, 08:32 PM   #8
es44 is offline es44  Denmark
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I would be very happy for a set too. Looks like the perfect companion for my GC and record player
Will send PM
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Old 23rd May 2006, 11:06 PM   #9
matjans is offline matjans  Netherlands
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hey guys,

Looks very nice! If you have any boards left, i'd very much like a stereo set! My implementation of the vsps is somewhat buggy (a little humm and some hiss).

No wonder, I hacked it together pretty quickly on veroboard with a psu i had lying around.

I'll send you an email.
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Old 24th May 2006, 04:23 AM   #10
JesseG is offline JesseG  Canada
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Quote:
I have got about 5 gold plated sets that I don't need, so if You are interested...
I would very much like to obtain a set as well (hope I'm not too late).

Jess
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