Simplistic NJFET RIAA - Page 15

nicoch58 · 29th September 2008, 07:18 PM

this week I order some component upgrade ,for mad_k ant this last Salas riaa , becouse probability my next cartridge are HO....

Salas · 29th September 2008, 08:01 PM

Quote:

Originally posted by nicoch46

my supravox don't do thorsten L. project....

No drooping & beaming HF? Its a rather large bicone fullrange, isn't it?

Anyway, was talking in a general scenario, I don't know more about any system specifics and individual room sound, If I really haven't measured and experienced it. The loading thing is always open to change for best overall match. When you make it, you will find its best balance for your specifics. Never afraid to change parts quality and loading conditions or gain to hit equilibrium. Waiting for your results. Best of luck with new TT, carts, & tweaks!

nicoch58 · 29th September 2008, 08:27 PM

OT another time...sorry

20cm no bicone beaming...

I avoid FR but this one are wonderfull in OB ,my scanspeak 15w-9800 collect dust .....next will be OB 165 supra no bicone fieldcoil +15" never go back... but this is only my personal experience!

Salas · 29th September 2008, 09:27 PM

Surely very natural sounding choices, I just think that the upper harmonics spread that I get with high value resistor loading on the Denon might be complimentary to your speakers, more than mine. So this might explain our different loading choices.

nicoch58 · 29th September 2008, 09:32 PM

no are phono stage ....the vocal jump forward and big ,not little HF deviance

Salas · 29th September 2008, 09:43 PM

I take your experience seriously. I will try again high RL, but after I will play for many hours so everything settles.

nicoch58 · 29th September 2008, 09:55 PM

need try your phono....

with supex 80ohm ,(better cartrige) at 23.5k sound more worm-balanced but the soundstage remember the dl160 at 3k,a little not expanded ..need to try new RL tomorrow

I prefer the dl-160 at 3k for HF balance , but at 23,5k for big soundstage with a little HF evidence

difference :
FR>boxy=vinyl>cd

wrenchone · 30th September 2008, 04:24 AM

Chaeck the thread "JFET SRPP RIAA Preamp" for recent developments. The circuit is not anywhere near as simple as the original, but it works a lot better, at least in simulation.

nicoch58 · 8th October 2008, 08:10 PM

HI Salas I have found nice source component near me (I hope) for your phono.....

as I have 20/24v psu, if I put the bl(no r) in my 24 I have the same gain of your 20v(33r) ?

I hope that koetsu are 0,6mv but I have read real 0,45mv.......

nicoch58 · 8th October 2008, 08:16 PM

PS because I want hear the difference from the cartridge without change my Riaa and caps....

29th September 2008, 07:18 PM	#141
nicoch58 diyAudio Member Join Date: Oct 2004	this week I order some component upgrade ,for mad_k ant this last Salas riaa , becouse probability my next cartridge are HO.... __________________ Sic58

29th September 2008, 08:27 PM	#143
nicoch58 diyAudio Member Join Date: Oct 2004	OT another time...sorry 20cm no bicone beaming... I avoid FR but this one are wonderfull in OB ,my scanspeak 15w-9800 collect dust .....next will be OB 165 supra no bicone fieldcoil +15" never go back... but this is only my personal experience! __________________ Sic58

29th September 2008, 09:32 PM	#145
nicoch58 diyAudio Member Join Date: Oct 2004	no are phono stage ....the vocal jump forward and big ,not little HF deviance __________________ Sic58

29th September 2008, 09:55 PM	#147
nicoch58 diyAudio Member Join Date: Oct 2004	need try your phono.... with supex 80ohm ,(better cartrige) at 23.5k sound more worm-balanced but the soundstage remember the dl160 at 3k,a little not expanded ..need to try new RL tomorrow I prefer the dl-160 at 3k for HF balance , but at 23,5k for big soundstage with a little HF evidence difference : FR>boxy=vinyl>cd __________________ Sic58

8th October 2008, 08:10 PM	#149
nicoch58 diyAudio Member Join Date: Oct 2004	HI Salas I have found nice source component near me (I hope) for your phono..... as I have 20/24v psu, if I put the bl(no r) in my 24 I have the same gain of your 20v(33r) ? I hope that koetsu are 0,6mv but I have read real 0,45mv....... __________________ Sic58


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29th September 2008, 09:27 PM	#144
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Surely very natural sounding choices, I just think that the upper harmonics spread that I get with high value resistor loading on the Denon might be complimentary to your speakers, more than mine. So this might explain our different loading choices.

29th September 2008, 09:43 PM	#146
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	I take your experience seriously. I will try again high RL, but after I will play for many hours so everything settles.

30th September 2008, 04:24 AM	#148
wrenchone diyAudio Member Join Date: Feb 2004 Location: Silicon Valley	Chaeck the thread "JFET SRPP RIAA Preamp" for recent developments. The circuit is not anywhere near as simple as the original, but it works a lot better, at least in simulation.

8th October 2008, 08:16 PM	#150
nicoch58 diyAudio Member Join Date: Oct 2004	PS because I want hear the difference from the cartridge without change my Riaa and caps.... __________________ Sic58

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