Those Krummer caps are the same as the ones from Mundorf and Thel
(http://www.thel-audioworld.de/bauteile/elkos/elkos.htm).
I don`t know the prices of the Mundorf caps but Thel takes 69€ for 1!! 47000uF @ 63V.
Those have low inductance(L= 12nH;tan-d = 0, 22;
ESR typ = 0,005Ohm ) and are designed for high ripple current (up to 100A without heatsink) and can be mounted on heatsinks.
The component live also is very long ( +40° = >540.000 h
+85° = >20.000 h).
Diameter is 91mm and hight 70mm!
Seems like the best elko we could get. But Krummer only sells to OEM customers. I think the only way to get affordable prices is to buy these elkos as a company and in very high quantity. Maybe anyone of you Holland folkes has the opportiunity to do this. Maybe i could do it over the company i`m actual working in. I`ll have to ask them.
So check out these elkos. I´m shure you will like them.
illusionxx
(http://www.thel-audioworld.de/bauteile/elkos/elkos.htm).
I don`t know the prices of the Mundorf caps but Thel takes 69€ for 1!! 47000uF @ 63V.
Those have low inductance(L= 12nH;tan-d = 0, 22;
ESR typ = 0,005Ohm ) and are designed for high ripple current (up to 100A without heatsink) and can be mounted on heatsinks.
The component live also is very long ( +40° = >540.000 h
+85° = >20.000 h).
Diameter is 91mm and hight 70mm!
Seems like the best elko we could get. But Krummer only sells to OEM customers. I think the only way to get affordable prices is to buy these elkos as a company and in very high quantity. Maybe anyone of you Holland folkes has the opportiunity to do this. Maybe i could do it over the company i`m actual working in. I`ll have to ask them.
So check out these elkos. I´m shure you will like them.
illusionxx
My father doesn't mind ordering some caps for us.Just made some phone calls, looks like the Mundorf caps are only available in Germany. I still could try herweijerelectronics.nl (after 17:00).
There's only one problem, the price. I need twelve, that's around EUR600.
That's a big no. I thought the Panasonics were expensive.
And we don't no if it's worth it until someone builds an amp with them...
I will continue my search for caps later today.
Good thing, this group purchase initiative!
I found out the same things last night as "illusionxx" did comparing info on the capacitors from the different web-sites.
The specs are impressive and they are sure top-quality products, but the prices are indeed rather steep!
At this moment it would be good to have some idea about the actual interest of people in and quantities of the different parts.
Best would be to setup a WIKI and define some categories.
Category's I found so far:
- Heatsinks
- Transformers
- High capacity electrolitic capacitors
- Power Mosfets
- ??
Per category some global spec's should be defined which could be a base for obtaining price quotations and allow some comparison between different quotes.
I would volunteer to set up the WIKI, but would have to look into the subject as I have no experience with that.
I found out the same things last night as "illusionxx" did comparing info on the capacitors from the different web-sites.
The specs are impressive and they are sure top-quality products, but the prices are indeed rather steep!
At this moment it would be good to have some idea about the actual interest of people in and quantities of the different parts.
Best would be to setup a WIKI and define some categories.
Category's I found so far:
- Heatsinks
- Transformers
- High capacity electrolitic capacitors
- Power Mosfets
- ??
Per category some global spec's should be defined which could be a base for obtaining price quotations and allow some comparison between different quotes.
I would volunteer to set up the WIKI, but would have to look into the subject as I have no experience with that.
TheJudge,
im talking about buying the caps from Krummer (original manufacturer of the Mundorf M-Lytic HC caps and the Thel caps) -> same caps different label.
http://www.krummer-kondensatoren.de/index.html
I think the price would probanly drop to 50% ( estimated 35€ for 47000uF).
You don`t have to be a company to buy for 60€!
I think you calculated with 12*50=600€ (for 12*22000uF)? I think this would be a lot less with my intention.
I`m talking of the Serie 901 elkos.
http://www.krummer-kondensatoren.de/html/schraubanschluss.html
Maby you could ask for a quote at 100 pieces so we would have a price for further considerations.
illusionxx.
im talking about buying the caps from Krummer (original manufacturer of the Mundorf M-Lytic HC caps and the Thel caps) -> same caps different label.
http://www.krummer-kondensatoren.de/index.html
I think the price would probanly drop to 50% ( estimated 35€ for 47000uF).
You don`t have to be a company to buy for 60€!
I think you calculated with 12*50=600€ (for 12*22000uF)? I think this would be a lot less with my intention.
I`m talking of the Serie 901 elkos.
http://www.krummer-kondensatoren.de/html/schraubanschluss.html
Maby you could ask for a quote at 100 pieces so we would have a price for further considerations.
illusionxx.
MOSFET : reichelt IRFP044N for €1.05 a piece irf9610 for €0.45 (both IR not Harris)
Source resistors: digikey panasonic 2W (same as NP uses in commercial XA's ) $0.28 a piece
Caps (nonPSU): If you want to go expensive and use BG's
acoustic dimension do have some time though, the guy is not the quickest, but relative cheap. If they are to expensive use panasonics and order at digikey since you are already placing an order of resistors (and of course cl-60 's for your PSU)
Trafo : Reichelt 800VA for €55.80 (get good comments) use 2 instead of one if VA is not enough
Heatsinking
fisher is beautiful but expensive, seifert less expensive but not straight, deltour expensive and beautiful, US companies not really an option due to shipping weight with +10 pieces (these heatsinksink required are really massive !!)
Ralph
Source resistors: digikey panasonic 2W (same as NP uses in commercial XA's ) $0.28 a piece
Caps (nonPSU): If you want to go expensive and use BG's
acoustic dimension do have some time though, the guy is not the quickest, but relative cheap. If they are to expensive use panasonics and order at digikey since you are already placing an order of resistors
(and of course cl-60 's for your PSU)Trafo : Reichelt 800VA for €55.80 (get good comments) use 2 instead of one if VA is not enough
Heatsinking
fisher is beautiful but expensive, seifert less expensive but not straight, deltour expensive and beautiful, US companies not really an option due to shipping weight with +10 pieces (these heatsinksink required are really massive !!)Ralph
rwagter said:
Digikey has the IRFP240 for $1.49 (100 pieces), that's a little cheaper then Reichelt, maybe nice if allready ordering from Digikey. Don't know which one is better, IRFP044N or IRFP240 for my amp.
The 5% METAL OXIDE ones? I've read low inductive types are preferred. Maybe we could buy some extra to get them matched.
There are not many caps in the Aleph-X, so I think I will go for the BG's. The guy is in The Netherlands, which is an advantage.Caps (nonPSU): If you want to go expensive and use BG's
acoustic dimension do have some time though, the guy is not the quickest, but relative cheap. If they are to expensive use panasonics and order at digikey since you are already placing an order of resistors
These are as big as the Amplimo 1000VA. Interesting.
TheJudge said:Good job.
Looks like you found some real quality parts.
http://www.herweijerelectronics.nl/shop/caps/elco.htm
If those Krummer's sound as good as they look then I want a bunch.
Dealer for Mundorf in The Netherlands:
http://www.remo.nl/
EUR53.82 for a 22,000uF 80V Mundorf cap.
The guy on HTforum quited a price of circa 60 euro for a 47000uF/80V. Somewhere on a German inet shop.
http://www.htforum.nl/yabbse/index.php?topic=21312.60
63V wil probably be a lot cheaper (but I need 80V).
Soundline.nl is also a Mundorf dealer
I found them here:
http://www.plus-elektronik.de/shop/...rf_-_produkte_kondensatoren_m-lytic_hc_80.htm
However I'm not going to buy them with that insane prices. I will call Soundline tomorrow to see what they can do.
-edit-
I also looked at the Keindel caps:
http://www.adexltd.co.uk/kendeil/capacitors.shtml
from Soundline. But the specs don't look very special (compared to Aerovox and Panasonic).
http://www.plus-elektronik.de/shop/...rf_-_produkte_kondensatoren_m-lytic_hc_80.htm
However I'm not going to buy them with that insane prices. I will call Soundline tomorrow to see what they can do.
-edit-
I also looked at the Keindel caps:
http://www.adexltd.co.uk/kendeil/capacitors.shtml
from Soundline. But the specs don't look very special (compared to Aerovox and Panasonic).
illusionxx said:
Would you be so kind to call them for me? Since you speak German.
I would appriciate it a lot.
47,000uF and 100,000uF @50 Volt or 63 Volt. 12 and 100 pieces.
I don't know where others are interested in?
Ripple CRCRC 25VAC Full Bridge:
Krummer 47,000uF 47mV
Krummer 100,000uF 5mv
Panasonic 150,000uF 1,8mv
De Krummers have lower inductance and 5 times higher ripple current...
Unfortunately numbers doesn't say a lot about sonic diffrences.
Maybe I should ask Nelson.
TheJudge,
at Krummer they`ll only give informations if you can name a company you are asking for.
But you could use this form:
http://www.krummer-kondensatoren.de/html/anfrage.html
and make the following entries:
>Bauform: Schraubanschluß
>Befestigung: Gatter Becherboden
>Kapazitaet: 47000
>Betriebsspannung: 63
>Jahresbedarf: 100
>Losgroesse: 100
>Baugleich zu: Serie 901
And the fields under
>Bitte geben Sie nachfolgend Ihre Kontaktdaten ein:
have the following meaning (from top to bottom):
>Name
>First Name
>Company
leave the next two fields blank
>E-Mail
You can post the reply or e-mail it to me and i`ll translate it for you.
Perhaps you should try CLCLC. This will give you ripples of 4mV peak to peak with 44000uF caps and 1.2 mH inductors.
illusionxx
at Krummer they`ll only give informations if you can name a company you are asking for.
But you could use this form:
http://www.krummer-kondensatoren.de/html/anfrage.html
and make the following entries:
>Bauform: Schraubanschluß
>Befestigung: Gatter Becherboden
>Kapazitaet: 47000
>Betriebsspannung: 63
>Jahresbedarf: 100
>Losgroesse: 100
>Baugleich zu: Serie 901
And the fields under
>Bitte geben Sie nachfolgend Ihre Kontaktdaten ein:
have the following meaning (from top to bottom):
>Name
>First Name
>Company
leave the next two fields blank
You can post the reply or e-mail it to me and i`ll translate it for you.
Perhaps you should try CLCLC. This will give you ripples of 4mV peak to peak with 44000uF caps and 1.2 mH inductors.
illusionxx
rwagter said:
I called Clofis about this problem last week. They were suprised to hear the heatsinks were not staight. They said that's not normal. So I ordered new heatsinks for my second Aleph 5 and asked if I could return them if they were not straight. They said that I could return them.
You could take a look at www.svalander.se for PSU caps.
AFAIK the rifa peh169 is among the best, and for the price at svalander, close to unbeatable.
I bought a handfull of the 100.000uF 63V type for my project, I am still to find a cheaper or better solution.
Magura
AFAIK the rifa peh169 is among the best, and for the price at svalander, close to unbeatable.
I bought a handfull of the 100.000uF 63V type for my project, I am still to find a cheaper or better solution.
Magura
Guy's,
I'm running the 800VA toroids in my class-A amp to 60% of the load. They remain cool (~20C above ambient).
I've used these transformers also in other projects and the 800VA have power to spare. If compared by the delta temperature with the 300VA, the 800VA is essentially a 1KVA with higher copper loss. My guess is that BSAB is using a 1KVA core.
BSAB is the supplier for Reichelt and is also delivering custom build toroids for intresting prices.
Also happen to have some 20 heatsinks left with a 10mm base plate measuring 200 (W) x 120 (H, also fin height) X 40 (D) weight: ~1Kg each.
For high capacity heatsinks you could also look at the bonded fin solutions of Thermalloy.
I'm running the 800VA toroids in my class-A amp to 60% of the load. They remain cool (~20C above ambient).
I've used these transformers also in other projects and the 800VA have power to spare. If compared by the delta temperature with the 300VA, the 800VA is essentially a 1KVA with higher copper loss. My guess is that BSAB is using a 1KVA core.
BSAB is the supplier for Reichelt and is also delivering custom build toroids for intresting prices.
Also happen to have some 20 heatsinks left with a 10mm base plate measuring 200 (W) x 120 (H, also fin height) X 40 (D) weight: ~1Kg each.
For high capacity heatsinks you could also look at the bonded fin solutions of Thermalloy.
Hi Sander,
Do you find the heatsink for your Aleph X amplifier? I was organizing a group buy of heatsink Aleph amplifier chassis.
Would you like to use this chassis to reduce heat rate.
Here is the image of the chassis:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=44574&perpage=5&pagenumber=3
If you have interesting our chassis, Please e-mail or through this forum to contact me at sun238@yahoo.com
Thanks,
Sun Cheung
Do you find the heatsink for your Aleph X amplifier? I was organizing a group buy of heatsink Aleph amplifier chassis.
Would you like to use this chassis to reduce heat rate.
Here is the image of the chassis:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=44574&perpage=5&pagenumber=3
If you have interesting our chassis, Please e-mail or through this forum to contact me at sun238@yahoo.com
Thanks,
Sun Cheung
All specs are for 47000 uF @ 63V
BC Serie 154:
ESL 29 nH
ESR 9 mOhm
RIFA PEH169:
ESL 17nH
ESR 5 mOhm
Krummer Serie 901:
ESL 12 nH
ESR 5 mOhm
I could only find BC`s rated at 85°C (the others are also 85°C). Maybe the 105°C types have better specs.
Perhaps kro5998 could post a link to the specsheet.
And here is another label for the Krummer caps:
http://www.winkel-kondensatoren.de/pdf/FTcapSerieGW.pdf
I`m going to ask them for a quote if the one from Krummer isn`t good.
illusionxx
BC Serie 154:
ESL 29 nH
ESR 9 mOhm
RIFA PEH169:
ESL 17nH
ESR 5 mOhm
Krummer Serie 901:
ESL 12 nH
ESR 5 mOhm
I could only find BC`s rated at 85°C (the others are also 85°C). Maybe the 105°C types have better specs.
Perhaps kro5998 could post a link to the specsheet.
And here is another label for the Krummer caps:
http://www.winkel-kondensatoren.de/pdf/FTcapSerieGW.pdf
I`m going to ask them for a quote if the one from Krummer isn`t good.
illusionxx
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