Simplistic NJFET RIAA - Page 558

SGregory · 27th December 2010, 02:16 PM

Merlin
After a few days I will be pulling the simplistic to the measurement bench. When I do that, I will hook up the power supply to the v1.0 regs and measure the current.

On the v1.2r, what a difference a night makes. The soundstage has returned and no hints of compression that I originally perceived. Percussion in particular has more drive to it. Still a bit more laid back than the v1.2 was in identical conditions, but pleasantly so. It has a very nice balance to it. yLinda Rondstat is absolutely stunning. Al Hirt and Pete Fountain are in their glory.

SGregory · 27th December 2010, 02:24 PM

Did I mention dynamics? Shame on me ;-)

Salas · 27th December 2010, 02:27 PM

Your last posts rung more familiar to my experience with it. Don't forget that you had tuned your HF cap in the Riaa with the previous TT and cart plus 1.2.

SGregory · 27th December 2010, 02:39 PM

True. I will measure in the next day or so and retune if need be. figure it should stabilize first

Salas · 27th December 2010, 02:45 PM

I cant see 150pF steps reliably on my screen when I measure the riaa filter but I can easily hear them for tonal balance. Maybe because they impact a wide band.

RCruz · 27th December 2010, 06:33 PM

Quote:

Originally Posted by SGregory

On the v1.2r, what a difference a night makes. The soundstage has returned and no hints of compression that I originally perceived. Percussion in particular has more drive to it.

these are also my subjective impressions when comparing v12 and v12r.

All my builds have the same current and the same vref so the differences reside on the output caps and the error amp.

V12 has incredible detail, speed and projects a wide soundstage but in some cases I prefer v12r with the bigger projection of low mids, high lows.

As for V1 ... it adds more weight but looses detail, depending on the EL used.

Salas · 27th December 2010, 06:45 PM

I remind, don't forget to re evaluate cart's load and riaa HF cap with every regulator type. You can strike even more tonal synergy and retain mostly positive characteristics in each one. He, that's really esoteric stuff.

merlin el mago · 27th December 2010, 07:06 PM

Great, fixed the problem (possible a cold joint), now I can say YES I am in the V1.2R Olimpos zone

the best way to finish 2.010, thanks & congrats Salas for very good reg.

P.S. Really it's a esoteric stuff.

merlin el mago · 27th December 2010, 07:07 PM

Quote:

Originally Posted by RCruz

these are also my subjective impressions when comparing v12 and v12r.

All my builds have the same current and the same vref so the differences reside on the output caps and the error amp.

V12 has incredible detail, speed and projects a wide soundstage but in some cases I prefer v12r with the bigger projection of low mids, high lows.

As for V1 ... it adds more weight but looses detail, depending on the EL used.

What's "EL" Ricardo?

SGregory · 27th December 2010, 07:07 PM

The esoteric stuff is what is fun and what keeps it interesting. Always something to fidget with.....

I assume EL is electrolyticCap

27th December 2010, 02:16 PM	#5571
SGregory diyAudio Member Join Date: Apr 2003 Location: Southern Tier NY	Merlin After a few days I will be pulling the simplistic to the measurement bench. When I do that, I will hook up the power supply to the v1.0 regs and measure the current. On the v1.2r, what a difference a night makes. The soundstage has returned and no hints of compression that I originally perceived. Percussion in particular has more drive to it. Still a bit more laid back than the v1.2 was in identical conditions, but pleasantly so. It has a very nice balance to it. yLinda Rondstat is absolutely stunning. Al Hirt and Pete Fountain are in their glory. __________________ Living Life Doing the Waltz in 4/4 meter.

27th December 2010, 02:24 PM	#5572
SGregory diyAudio Member Join Date: Apr 2003 Location: Southern Tier NY	Did I mention dynamics? Shame on me ;-) __________________ Living Life Doing the Waltz in 4/4 meter.

27th December 2010, 02:39 PM	#5574
SGregory diyAudio Member Join Date: Apr 2003 Location: Southern Tier NY	True. I will measure in the next day or so and retune if need be. figure it should stabilize first __________________ Living Life Doing the Waltz in 4/4 meter.

27th December 2010, 07:07 PM	#5580
SGregory diyAudio Member Join Date: Apr 2003 Location: Southern Tier NY	The esoteric stuff is what is fun and what keeps it interesting. Always something to fidget with..... I assume EL is electrolyticCap __________________ Living Life Doing the Waltz in 4/4 meter.

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27th December 2010, 02:27 PM	#5573
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Your last posts rung more familiar to my experience with it. Don't forget that you had tuned your HF cap in the Riaa with the previous TT and cart plus 1.2.

27th December 2010, 02:45 PM	#5575
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	I cant see 150pF steps reliably on my screen when I measure the riaa filter but I can easily hear them for tonal balance. Maybe because they impact a wide band.

27th December 2010, 06:45 PM	#5577
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	I remind, don't forget to re evaluate cart's load and riaa HF cap with every regulator type. You can strike even more tonal synergy and retain mostly positive characteristics in each one. He, that's really esoteric stuff.

27th December 2010, 07:06 PM	#5578
merlin el mago diyAudio Member Join Date: Sep 2009 Location: Catalonia new Europe state	Great, fixed the problem (possible a cold joint), now I can say YES I am in the V1.2R Olimpos zone the best way to finish 2.010, thanks & congrats Salas for very good reg. P.S. Really it's a esoteric stuff.

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