Simplistic NJFET RIAA - Page 182

RCruz · 27th May 2009, 10:35 PM

And now the "über yellow riaa"

Salas · 28th May 2009, 12:05 AM

Here is the final circuit in 3 sensitivities, best we know of. CloadX is additional to cable capacitance if needed for MM. See manufacturer specs. A TT normally presents 150-200pF from cart to male RCA.
For MC it is normally omitted, unless there is some recommendation from a cartridge manufacturer. Rload is the load resistor. You can start with the ballpark example values, but better fine tune. See MC cart spec again.

1. MM or High MC. 2-5mV.

Salas · 28th May 2009, 12:06 AM

2. Medium MC 1mV.

Salas · 28th May 2009, 12:07 AM

3. MC 0.25-0.5mV

nicoch58 · 28th May 2009, 08:45 AM

HI Ricardo , mod_man

I read that put the Rload back on head shell (non fixed) sound better ,we can put on arm pod for fixed headshell....

johnm · 28th May 2009, 09:08 AM

Hi Salas.

Is circuit number 3 suitable for a Denon 103-R cartridge? I haven't managed to start building yet due to an illness, but still gathering parts. Last circuit I had is the attached.

Cheers,

- John

Salas · 28th May 2009, 04:19 PM

What is the type and sensitivity of your speakers? What amp and preamp you have? Do you know their gain in dB? How can you characterize the sound of your system right now? Heavy, thin, or neutral?

Because I know the DL103 and the cascode or not I am trying to give you the best advice. Let me know about the questions.

massimo · 28th May 2009, 06:35 PM

Quote:

Originally posted by Salas
Here is the final circuit in 3 sensitivities, best we know of.

Very good, Salas, well done.
Now, next step, a small BOM with suggested caps (model/brand) and final shunt schematics for the different ps voltages
Am I asking too much?

P.S. do you need something from Italy? I'm flying to Greece next weekend

Salas · 28th May 2009, 06:42 PM

Like you knew it, I am in contact with USA member psgr and we create a resume thread pdf, with BOM's, parts suggestions etc.

Can I have a desmo bike from Bologna please?

Nice for summer.

massimo · 28th May 2009, 06:48 PM

My girl friend (who's coming with me) is from Bologna..... and Borgo Panigale isn't far....
If only I could pack one of those bike in my suitcase

I'm flying low cost, max allowance 20 kg. Sorry!

P.S. the PDF is a great idea!

28th May 2009, 08:45 AM	#1815
nicoch58 diyAudio Member Join Date: Oct 2004	HI Ricardo , mod_man I read that put the Rload back on head shell (non fixed) sound better ,we can put on arm pod for fixed headshell.... __________________ Sic58

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th May 2009, 04:19 PM	#1817
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	What is the type and sensitivity of your speakers? What amp and preamp you have? Do you know their gain in dB? How can you characterize the sound of your system right now? Heavy, thin, or neutral? Because I know the DL103 and the cascode or not I am trying to give you the best advice. Let me know about the questions.

28th May 2009, 06:42 PM	#1819
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Like you knew it, I am in contact with USA member psgr and we create a resume thread pdf, with BOM's, parts suggestions etc. Can I have a desmo bike from Bologna please? Nice for summer.

28th May 2009, 06:48 PM	#1820
massimo diyAudio Member Join Date: Dec 2002 Location: Milan, Italy	My girl friend (who's coming with me) is from Bologna..... and Borgo Panigale isn't far.... If only I could pack one of those bike in my suitcase I'm flying low cost, max allowance 20 kg. Sorry! P.S. the PDF is a great idea!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)