DIY Moving Coil phonostage

[jls001]

Hi Sachin, have you started dispatching the kits?

At least mine's winging its way to Mumbai

 

[sachu888]

Hi Sachin, have you started dispatching the kits?

Yes Capt,
I have sent few boards to Hypnotoad of AK,same day I have shipped few boards to Shaizada.I just sent BOM on your mail.

Regards,
Sachin

 

[malvai]

Yes Capt,
I have sent few boards to Hypnotoad of AK,same day I have shipped few boards to Shaizada.I just sent BOM on your mail.

Regards,
Sachin

sachin, can you do 2 diy's for me? completely?

i was looking at 1 MM and 1 MC phono? PM me!

 

[shaizada]

SUCCESS!!

I JUST fired it up and it is working. I will post impressions later on once it has settled in and run for a while. 1st thoughts...everyone should build one. The treble is a somewhat exaggerated right now and the bass is quite reduced. I suspect, this will all balance out when all those caps are burned in.

This time though, I got some nice cuts and bruises while drilling holes for the casework...but it's all worth it

EDIT: Treble energy already reduced a bit after playing 3 songs. Didn't think it would be so quick and obvious!

SACHIN, THANK YOU SO MUCH ONCE AGAIN FOR THE BOARDS. Tusi Chaa Gaye!

 

[Tanoj]

Hi Sachin

what are the green colour blocks in the circuit board, ( the pics which you posted ) which have screws on them on the top ?


Regards

Tanoj

 

[sachu888]

Hi Sachin

what are the green colour blocks in the circuit board, ( the pics which you posted ) which have screws on them on the top ?


Regards

Tanoj

They are PCb terminals for swapping resisters quickly.You need to change R1/R2/R3/R4 resisters for different MC carts,this will help you easy swapping of resisters without soldering.

Regards,
Sachin

 

[Tanoj]

Hello Sachin

Connected the phono stage, and i should tell you its awesome,

what a great sound stage, and everything is absolutely superb

you should hear it to believe it

great bass, treable, iam loving the tabla sound, listing to jodha akbar LP

WOW .... Aweeesome , Iam loving it :yahoo:

 

[jls001]

Hello Sachin

Connected the phono stage, and i should tell you its awesome,

what a great sound stage, and everything is absolutely superb

you should hear it to believe it

great bass, treable, iam loving the tabla sound, listing to jodha akbar LP

WOW .... Aweeesome , Iam loving it :yahoo:

That's great to hear, Tanoj.

You seem to have similar experience to whoever has made and listened to this DIY MC phono. So I can only look forward to completing my build and buying a proper MC cart.


@Capt: I see that you've opted too for this DIY. Moving to the dark side soon, are we?

 

[sachu888]

Hello Sachin

Connected the phono stage, and i should tell you its awesome,

what a great sound stage, and everything is absolutely superb

you should hear it to believe it

great bass, treable, iam loving the tabla sound, listing to jodha akbar LP

WOW .... Aweeesome , Iam loving it :yahoo:

Hi Tanoj,
I am glad you liked it.Please write some more detail.

Regards,
Sachin

 

[malvai]

i'm eagerly waiting for mine!!!!! sachuuuuuuuuuuuuuu!!!!!!

 

[sachu888]

i'm eagerly waiting for mine!!!!! sachuuuuuuuuuuuuuu!!!!!!

Your PS is ready Manav,see pic.
[URL=http://imageshack.us/photo/my-images/827/dsc04960gw.jpg/] Uploaded with ImageShack.us[/URL]

Regards,
Sachin

 

[captrajesh]

@Capt: I see that you've opted too for this DIY. Moving to the dark side soon, are we?

Hey Joshua, I've already made the MM phono stage before. Wanted to make this as well and put both in a box to make a discrete phono stage.

 

[dillihifi]

I am interested in making a DIY MM /MC phonostage could anybody here guide me please.

 

[stevieboy]

Looks superb Sachu!!! Finally got a breather today, will be transferring the coins for my board yuhoooo! Then to order the parts...

Thanks again a ton

 

[malvai]

looking super sachu!!!!

i guess i'll have to order the boxes soon!

 

[stevieboy]

Sachin,

Could you post a picture of the other side of the board so I see how its soldered?

Thanks!
Steve

 

[captrajesh]

Hey Sachu, since the resistor values would depend on the cartridge being used, can't we have a selector with multiple resistors, (stepped attenuator) rather than fixing the resistors onto the PCB?

 

[sachu888]

Hey Sachu, since the resistor values would depend on the cartridge being used, can't we have a selector with multiple resistors, (stepped attenuator) rather than fixing the resistors onto the PCB?

Its not practical with MC carts coz resisters depend upon two things internal impedance of cart and its output,and almost every MC cart resistance is different.

Regards,
Sachin

 

[sachu888]

I am going to order parts for myself,please let me know if anyone wants me to order parts for this pre.

Regards,
Sachin

 

[stevieboy]

I haven't ordered parts yet. Would be great if you did so for me too! Do let me know the additional cost. The wires would be included in the parts? Or is there some spec for this and one can pick it up at an electrical store?

Cart: Ortofon SPU classic,
Output voltage at 1000 Hz, 5cm/sec. 200 V
Internal impedance, DC resistance 6 Ohm
Recommended load impedance > 10 Ohm

Are the specs enough for the resistors needed?

Regards
Steve