DIY: Pass F5 turbo v2 initiated

sachu888 · Oct 19, 2012

omishra said:
@kroyin, if I remember correctly then you already had some experience with this. Can you please share it?

Yes I saw it inside Norge amp, even small version 4700uF is used by me in my 40+40W amp. I did not find any issue. But kroyin noticed difference within power cap changes in his previous F5 build.

Swamha caps are not good for this application.You can find bad reviews in bad cap forums.I think they are subsidiary of Samsung group.They are used with most of the LCD/LED monitors and failing rate is very high.
All Samsung LCD TV owners - take note, bad caps saga again!
EEVblog #365 - ESR Meter Bad Cap Monitor Repair - Page 1
You will find bad reviews everywhere.
another one http://www.badcaps.net/forum/showthread.php?t=19186

Regards,
Sachin

kroyin · Oct 19, 2012

Na it was not samwha, it was a Chinese cap and the difference after putting Panasonic was perceptible.In Class A amps PSU caps have a great effect on bass & soundstage.
So get the best based on availability & affordability.

About Samwhas ...they are Korean & the primary cap supplier to Samsung.
They don't have a lot of reviews & I couldn't locate datasheets with ESR ripple etc.
A 10000uF 50v 85C would set you back 80-90 bucks. As things stand now I'll pull the Panasonic from the F5 & put it in F5T, put samwhas in F5

All things considered I'll jump @ CDE'S @ 150.I'll infact get the 15k 50v (again price & participation dependent)

sachu888 · Oct 19, 2012

kroyin said:
Na it was not samwha, it was a Chinese cap and the difference after putting Panasonic was perceptible.In Class A amps PSU caps have a great effect on bass & soundstage.
So get the best based on availability & affordability.

About Samwhas ...they are Korean & the primary cap supplier to Samsung.
They don't have a lot of reviews & I couldn't locate datasheets with ESR ripple etc.
A 10000uF 50v 85C would set you back 80-90 bucks. As things stand now I'll pull the Panasonic from the F5 & put it in F5T, put samwhas in F5

All things considered I'll jump @ CDE'S @ 150.I'll infact get the 15k 50v (again price & participation dependent)

Hi Kroyin,
I could not even find any datasheet for Samwha.

Regards,
Sachin

1MOR · Oct 20, 2012

Received a set of the F5T boards from Sachin, thank you! Very nice

hyeah:

I stuffed one of the PS boards with some tasty Nichicon FG 10000uf 50V caps that came from buzzforb's diyaudio GB

Good luck with your search for a supply of PS caps. Over here, on the other side of the pond, we have access to all the small parts at reasonable prices.

Thanks to Omishra and Sanchin for making these boards available. I built an F5 amplifier and it is a superb piece of equipment and was a lot of fun to put together.

pdhanwada · Oct 20, 2012

sachu888 said:
Hi Quad,
Shipping charges are too high.Custom duty would be around 30%.I have got a quote of rs 150 each for 10000uf caps inclusive of all.I am waiting for a quote for 15000uf caps.

Regards,
Sachin

Me too I am intrested in the group buy for the 15000mf ones. Let me know the price.

Thanks

sachu888 · Oct 20, 2012

pdhanwada said:
Me too I am intrested in the group buy for the 15000mf ones. Let me know the price.

Thanks

I shall receive the final quote today.

Regards,
Sachin

captrajesh · Oct 20, 2012

baswamin said:
If we are getting it from Mouser, we can as well get Panasonic or Nichicon?

sachu888 said:
Panasonic would cost us min 250/cap.

baswamin said:
Then I think it is very good price. I am interested in this cap and hope others to join in to so as to pull off this cost.

I'd be interested too. Count me in for the Panasonics or Nichicons.

sachu888 · Oct 20, 2012

captrajesh said:
I'd be interested too. Count me in for the Panasonics or Nichicons.

Enquired again,Panasonic 10000uf 50v would cost us Rs350/piece.Min quantity would be 250 for this price.I am Ok with cornell dubelliar 10000/15000uf.I have seen DIY Audio members using this brand in F5. We have used them in B1 with good results.

Regards,
Sachin

sachu888 · Oct 20, 2012

1MOR said:
Received a set of the F5T boards from Sachin, thank you! Very nice hyeah:

I stuffed one of the PS boards with some tasty Nichicon FG 10000uf 50V caps that came from buzzforb's diyaudio GB

Good luck with your search for a supply of PS caps. Over here, on the other side of the pond, we have access to all the small parts at reasonable prices.

Thanks to Omishra and Sanchin for making these boards available. I built an F5 amplifier and it is a superb piece of equipment and was a lot of fun to put together.

Hi George,
those Nichicon looks really tasty :licklips:

Regards,
Sachin

captrajesh · Oct 20, 2012

sachu888 said:
Enquired again,Panasonic 10000uf 50v would cost us Rs350/piece.Min quantity would be 250 for this price.I am Ok with cornell dubelliar 10000/15000uf.I have seen DIY Audio members using this brand in F5. We have used them in B1 with good results.

It is cheaper on Digikey. Check this: ECO-S1HP103CA Panasonic Electronic Components | P6939-ND | DigiKey

sachu888 · Oct 20, 2012

captrajesh said:
It is cheaper on Digikey. Check this: ECO-S1HP103CA Panasonic Electronic Components | P6939-ND | DigiKey

Yes but importing is not an option.It will add up atleast 40% in the cost(shipping+customs).
Cornell Dubelliar are inclusive of all.I am getting them through one the authorised channel.

Regards,
Sachin

vktarun · Oct 20, 2012

sachu888 said:
I shall receive the final quote today.

Regards,
Sachin

Any update on Final quotes for 15000 mfd.

Hope you are dealing with Unisem Electronics.

Unisem Electronics Pvt. Ltd.

India Office:

Unisem Electronics Pvt Ltd.,
447-A, 17th G Main,
6th Block, Koramangala,
Bangalore - 560095,
India.
Tele: +91 80 4113 1825
Tele Fax: +91 80 2552 0082
Email: [email protected]

Contact:

Mr. Antony Raajesh
Mobile: +91 99011 34900

Regards,

Vipin

bijinmb · Oct 20, 2012

Today i bought ALCON 22000uF 40V Caps for my Le Monstre Class A amp.

I have attached few images of the caps.

According to me for high current applications P2P connection is the best choice rather than mounting on PCB's, but with PCB we can do that also by double wiring over the pcb's high current flow path.

But i personally feel this is the best way to do since we have freedom to level up the guage of the conductor by our wish and also can neatly place the caps bank exotically.

Anyway these caps are real monsters!

sachu888 · Oct 20, 2012

vktarun said:
Any update on Final quotes for 15000 mfd.

Hope you are dealing with Unisem Electronics.

Unisem Electronics Pvt. Ltd.

India Office:

Unisem Electronics Pvt Ltd.,
447-A, 17th G Main,
6th Block, Koramangala,
Bangalore - 560095,
India.
Tele: +91 80 4113 1825
Tele Fax: +91 80 2552 0082
Email: [email protected]

Contact:

Mr. Antony Raajesh
Mobile: +91 99011 34900

Regards,

Vipin

No Vipin,
I haven't received quotes today.I will take a follow up on Monday.I was negotiating with one the global distributor for big caps.I have also sent a mail to Unisem Electronics today,waiting for their reply.

Regards,
Sachin

sachu888 · Oct 21, 2012

Hi all,
I have received parts for F5 T today.Still waiting for remaining parts and Jfets.

I also visited Alcon factory today.Its half a km from my home.I met Sales Manager Mr Santosh there.He told me Alcon manufacturers only screw type caps.Snep in caps are sourced from outside and relabeled for trading purpose.He has directed me to an authorised distributor for Alcon.I have contacted him for 15000uf 50/63V caps.I shall receive the quotes tomorrow.
I request members to kindly transfer their share as I have made a huge investment.

Regards,
Sachin

omishra · Oct 21, 2012

sachu888 said:
.
I request members to kindly transfer their share as I have made a huge investment.

Me too

. I got 14 sets for connectors and local parts. 15 sets of 3020 diodes, 15 sets of stereo MOSFETs. Total Rs ~70K I will give detail for each of it later time. Please bear with me.

pdhanwada · Oct 21, 2012

Om & Sachin,

Wonderful service from you guys. Not just the knowledge about the subject but also the labour going each and every item purchasing them, maintaining inventory, accounts. One Hell of Job you guys are doing. If not for you guys I would not have taken up F5 v2 build.

Om, sachin,

I am not sure how much more I need to pay. Please let me know.

Also you can put up a list of dues per person in your next post then I guess everybody who is participating in the GB should be paying back.

Thanks

omishra · Oct 21, 2012

Sure Pandu! We already estimated amounts and hope to finish within it except few unforeseen situations like local octri, Custom duties on big parcels (if any). I keep adding to list by preserving receipts.

keith_correa · Oct 22, 2012

bijinmb said:
Today i bought ALCON 22000uF 40V Caps for my Le Monstre Class A amp.

Nice!!! How much did you pay?

kroyin · Oct 22, 2012

My God replacing components on these boards is pure hell :-D
Threw everything at it pump,wick,hotair,toothpick but the holes and the pad are so tiny putting components back in is very difficult for me :-D

After considerable difficulty put the JFETS in (8mA to replace 10mA)
not sure whether I'll able to change a faulty trimpot

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