MPP

[Joachim Gerhard]

The legs of my FKP2 are very stiff. I am afraid this is not copper but i will check that.

 

[mad_z]

The legs of my FKP2 are very stiff. I am afraid this is not copper but i will check that.

I hope they are not. That would mean it is either distributor/order dependent or they moved just recently to fecuma alloy or similiar

I have 2011 production which is still copper....

BTW: Zeners are on their way to my home as promised, so you can expect them next week

 

[Joachim Gerhard]

I am just in the process to do some measurements. I have a DIN record with a 1kHz tone at 8cm-sec. I have already measured a 2 x 4 2SK170 2SJ74 phonostgae with this tone and without input signal but Titan i connected. I am now setting up a BJT transimpedance stage that has adjustable DC offset at the input. I will set that to 1mV. Actually in this stage i use another DC offset cancelation method that uses a current mirror with adjustable ground refference. This circuit could also have a servo and then we have automatic DC offset cancelation. There are many ways to skin the cat ...
I will compare the distortion i get with the Fet stage that has zero DC into the cartridge and the BJT stage that has 1mV into the cartridge. This is double the nominal output of the Titan. If there is no diffence we can conclude that 1mV DC into the cartridge does not add distortion.

 

[Joachim Gerhard]

Thanks, Mad.

 

[beetle]

I have talked to Jahre and i got some interesting answers. I wanted to know what the smallest case is with 1% precision for RIAA use. It is case 53.
Here are the dimensions :
6,8nF 125V 12,7 x 12,5 x 3,4 10.2mm between wires Case 53.10
13,6nF 125V 12,7 x 12.5 x 5,3 10.2mm between wires Case 53.20
40,6nF 125V 22 x 12.2 x 10,4 20mm between wires Case 53.50

i get a price quote soon

Looks like custom made.

 

[Joachim Gerhard]

Yes, this is the same package.

 

[beetle]

Just a little sneak preview.

 

[FdW]

The transistors have arrived Frans, many thanks.

Now quick finish your Paradise build

 

[MiiB]

Yes.. finish quick...)

 

[Joachim Gerhard]

I was involved in measuring the effect of DC offset into the cartridge. Yes, 20mV negative into the Titan effect the distortion quite badly !!!!
Where is Hesener ? Lost in Paradise ?

 

[Joachim Gerhard]

Evanescence - "Lost In Paradise" (Snippet) - New Song (MTV News Interview) - YouTube

 

[Joachim Gerhard]

Lost In Paradise

 

[Joachim Gerhard]

......

 

[MiiB]

Phil Collins - Another Day In Paradise - YouTube

http://www.youtube.com/watch?v=ZK-FRac7m58

now we are going at it...

The best is.....

http://www.youtube.com/watch?v=1G4isv_Fylg&ob=av2e

 

[hesener]

I was involved in measuring the effect of DC offset into the cartridge. Yes, 20mV negative into the Titan effect the distortion quite badly !!!!
Where is Hesener ? Lost in Paradise ?

;-))))))

 

[MiiB]

step out...let's hear... I burst with excitement...Is it that good..???

 

[Joachim Gerhard]

Here we go. Red : 20mV negative
Black : 1mV positive
High Alfred ! How do you like the dog barking 30m in the depth direction, slightly on the right ?

 

[Joachim Gerhard]

Here is some more :
Conclusion : best to avoid offset
Hesener : "can not measure offset at the paradise input"

 

[Audiofanatic]

Amused to Death

Joachim,

Are we talking about Roger Waters here

I can not wait to be able to build this one to go to paradise myself

I want to compare it to my tube phono amp and let you guys know how paradise sounds like. I'm making the one that was designed by SY (HMN).
It seems to be a well balanced RIAA amp.

The proof of the pudding is in the eating so I hope to be ready to serve myself within a few weeks

Cheers,


Audiofanatic

 

[MiiB]

that was alo what i simulated....mikrovolts....seems like most is according to simulations...which is good..!!
Would have expected thermal issues to play a role, but it seems to balance itself out quite well

I have that waters album in a rare japaneese 180 g pressing...sounds marvelous