Pearl MC Pre-Preamp

[tdschofield]

MC kis still available?

Are kits for the MC pre-pre still avaialble? Are they available with parts kits? Assembled?
Price?
How do I go about ordering?
Tom
USA

 

[LUROTEC]

MC-prepre

Hi Promitheus,

I have finished my pearl with MC-prepre and
it sounds fantastic;
That is what I wanted;
Thanks for all the work, you did for us;

 

[promitheus]

Did everything fir OK on top of the Pearl like I suggested?
A few photos would be cool to see how you made the MC Pre and the Pearl.
It helps others to see the construction involved in the DIY building of Audio preamps etc.

 

[LUROTEC]

Hi Promitheus,

I try to put some pictures of my phonogear in;

 

[masag]

Congratulations, Ludwig!

Looks superb. Where do you get the enclosure, and please show us the front too!

Are there still boards availaible , Promitheus?

Regards

Sam

God loves beergarden too!

 

[Holger Barske]

I hope Ludwig doesn't mind if I post some pics of his work from another forum. Here's the front.

 

[Holger Barske]

Back:

 

[jasonlky]

Hi Promitheus,

I received my boards but I am short one set of MC PCBs. You probably missed it when you packed it up. Please send it along as soon as you can.

Cheers.

ps-sent you an email as well.

 

[Fox]

Output Cap MC-prepre

Folks,

I am busy with starting to assemble the Pearl Phono Package of Promitheus (Nice job Ilias! ). Can anybody enlighten me about the use of the rather large coupling cap in the MC-prepre. As far as I know, this cap was just 10uF in the Ono and became 220uF in the X-Ono.

Regards,

Fox

 

[Fox]

Grounding Pearl

Folks,

Hope this question is easier to answer than my last one 😉. I am a bit puzzled about the correct way to ground the Pearl MM and Ono MC boards and the two power supply boards. For your information, I will use one transformer and the unregulated Power Supply as a whole is separately boxed from the Phono Stage.

I was planning to create one starground in close proximity to the output RCAs. To this starground the grounds from both input and output RCAs will be connected as are both the power supply grounds. From this starground, grounding wires will be connected to the ground points on the several PCBs.

After searching and reading lots of posts, I got the impression that this is not the way to do the grounding. The RCAs should not be connected together groundwise but should be grounded via the PCBs, like in the attached picture of Buhl's Pearl. However, this leaves me with the following question: How and where should I connect the PSU-grounds to each other? If the output RCAs are not connected to a starground between them, it makes little sense to create a starground between the outputs. I have read and re-read Wayne’s Pearl article on this specific subject but somehow I cannot get a clue 😕.

Help me out on this one.

Regards,

Fox

 

[Fox]

Here's the pic.

http://www.diyaudio.com/forums/attachment.php?s=&postid=782578&stamp=1133778710

 

[promitheus]

Did anybody finish the MC pre boards?
A few photos would be interesting.

Many Greetings
Promitheus

 

[intense-tavda]

Hi Prometheus!
Do you have still some boards and parts? Illbe interested! Grtz Teake.

 

[promitheus]

intense-tavda: you got email

 

[henkel]

Promithues , you've got mail.

 

[promitheus]

I just ran out of Pearl PCBs but I still have MC Pre boards for those who already have the Pearl.
If you need Pearl PCBs please check this thread:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=52278&perpage=10&highlight=&pagenumber=29
there will be a new Pearl Group buy if more then 30 Pcbs are ordered.

 

[henkel]

Promitheus, you've got mail.

 

[svblack]

Hello Promitheus,

I would have interest in the MC Pre PCB's where can I these order?

Gruß
Frank

 

[svblack]

Hi Promitheus,

I would have interest on the MC Pre PCB's and Power PCB's where can I these order?

Gruß
Frank

 

[Fox]

Pearl Pictures

Folks,

I finally have made some pictures of my Pearl phono.

Here's the Aleph-Ono MC-stage. I have used Black Gates as coupling caps.