Hi folks,
I have NOS Siemens MKV caps for sale. There are still individually packed in plastic bags.
This are highest quality PP (Polypropylen) in oil caps (NOT to mix up with that paper in oil stuff You can find in old tube gear!). Due to their very high AC voltage rating they are excellently suited for tube amp applications either as signal-coupling or power-supply decoupling caps but should be equally good in SS gear or speaker crossovers.
There are rumours about this kind of parts having outstanding sonic qualities.
Search this board for posts (not from me!) about MKV caps (they are talking about axial leaded series B25839 there). Mine are series B25834 with radial connectors and mounting bolts. From what the specs say, B25834 are higher voltage rated and are otherwiese the same (but more expensive).
I myself cannot comment about the sonics as I still do not have a suitable setup for doing really fair and valuable sound comparisons. Moreover, as judgement about sound always is a very subjective thing (at least in this category), as seller of this parts I better not claim something what another might think is not true and so I better stay out of this.
All I can say is that I have sold some caps already, also to a few members of this forum and others (I have offered them already quite a while ago ).
I got one feedback from somebody (member of this forum if my memory serves me well) that said he tried the caps in speaker crossovers in comparison to his Tin-Foil MKP`s (Mundorf). He said that they performed "essentially better!: more authentic dimensional reproduction, sound coming much easier "off" the speakers".
Regarding that tin-foil caps are considered among the best audio caps, that`s not bad IMHO.
I also did some measurements with a Stanford Research SR715 LCR Digibridge (compensated Kelvin wire leads). For better comparison I picked a 1µF MKV <b>°6.)</b> from the list below and measured it against a Mundorf 1µF KP-SN 250V (Tin-Foil-MKP) I had that value at hand.
result for the 1µF MKV:
The dissipation factor @ 1kHz is 0,00019
The dissipation factor @ 10kHz is 0,00096
result for the 1µF KP-SN:
The dissipation factor @ 1kHz is 0,00014
The dissipation factor @ 10kHz is 0,00021
<b>1.)(***)</b>
14x Siemens MKV 6,8µF B25834-K6685-K009
Un=900V/Ueff=640V D:50mmxL:100mm (11/98)
Euros 26,80 (Euros 5,00)
<b>2.)(**)</b>
6x Siemens MKV 6,8µF B25834-F4685-K001
Un=AC-600V/Ui=AC-530V D:35mmxL:94mm (10/98)
Euros 16,50 (Euros 4,00)
<b>3.)</b>
2x Epcos MKV 4,7µF B25834-F5475-K001
Un=AC-750V/Ui=AC-670V D:35mmxL:94mm (09/98)
Euros 16,30 (Euros 5,50)
<b>4.)(*)</b>
15x Siemens MKV 3,3µF B25834-F6335-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:94mm (01/99)
Euros 15,70 (Euros 4,00)
<b>5.)</b>
22x Siemens MKV 1,5µF B25834-F6155-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
Euros 14,40 (Euros 4,50)
<b>6.)</b>
14x Siemens MKV 1µF B25834-B4105-K001
Un=600V/Ueff=420V D:25mmxL:64mm (03/99)
Euros 11,60 (Euros 4,00)
<b>7.)</b>
55x Siemens MKV 0,47µF B25834-B6474-M001
Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
Euros 10,80 (Euros 3,50)
As said above this caps are NOS but the parts marked with: <b>(*...stars)</b> - may have more or less dents due to storage.
The bigger and therefore heavier parts have more and "bigger" dents
(I could also try to make some more detailled pictures if required).
In detail this means:
<b>(***)</b> = all have quite some dents
<b>(**)</b> = most of them have dents
<b>(*) </b> = some of them have some dents
I do not believe that the dents have influence on the performance.
I have measured the one with the "worst" dents I could find and measured it against one nearly without and I can not see any difference.
From the 4,7µF cap <b>3.)</b> I have only two pieces. If there is some reasonable request
on this type (>20) of caps I might be able to get hold of more of them but I`m not sure.
The 4,7µF`s would be without any dents.
The dimensions (D= diameter; L=length) are taken including the connectors but without the
mounting bolt. Dimensions are only approximately.
For more details I can send datasheets of the Series B25834 (PDF:650kB). Just ask me
(I have also datasheets for the B25835 & B25839 series if somebody is interested for reference).
The numbers in brackets behind the dimensions represent the manufactorer data code.
Example: (03/99) means they are manufactored in March 1999.
Nuts for mounting and locking springs are included.
The prices in the listing above not in brackets are the regular retail prices per piece in Euros which You can find at this site:
http://www.buerklin.com
(search for MKV from the main site and please note that the prices given there are without 16% VAT!)
The price in brackets behind that is what I ask for per piece. The parts marked with any <b>(**)`s </b>are cheaper because of the dents. So my asking price is about 1/3 of the normal retail or less for the parts with dents.
I ship worldwide at actual shipping costs.
I can accept Paypal (credit-card payments also) in Euros (new Paypal feature makes this possible for any PP-user) as long You pay the fees I have for receiving payments (about 4% of the total).
The picture below shows the parts offered from the list:
upper row - beginning from left <b>1.)(***)</b> to right <b>3.)</b>
lower row - beginning from left <b>4.)(*)</b> to right <b>7.)</b>
I have NOS Siemens MKV caps for sale. There are still individually packed in plastic bags.
This are highest quality PP (Polypropylen) in oil caps (NOT to mix up with that paper in oil stuff You can find in old tube gear!). Due to their very high AC voltage rating they are excellently suited for tube amp applications either as signal-coupling or power-supply decoupling caps but should be equally good in SS gear or speaker crossovers.
There are rumours about this kind of parts having outstanding sonic qualities.
Search this board for posts (not from me!) about MKV caps (they are talking about axial leaded series B25839 there). Mine are series B25834 with radial connectors and mounting bolts. From what the specs say, B25834 are higher voltage rated and are otherwiese the same (but more expensive).
I myself cannot comment about the sonics as I still do not have a suitable setup for doing really fair and valuable sound comparisons. Moreover, as judgement about sound always is a very subjective thing (at least in this category), as seller of this parts I better not claim something what another might think is not true and so I better stay out of this.
All I can say is that I have sold some caps already, also to a few members of this forum and others (I have offered them already quite a while ago ).
I got one feedback from somebody (member of this forum if my memory serves me well) that said he tried the caps in speaker crossovers in comparison to his Tin-Foil MKP`s (Mundorf). He said that they performed "essentially better!: more authentic dimensional reproduction, sound coming much easier "off" the speakers".
Regarding that tin-foil caps are considered among the best audio caps, that`s not bad IMHO.
I also did some measurements with a Stanford Research SR715 LCR Digibridge (compensated Kelvin wire leads). For better comparison I picked a 1µF MKV <b>°6.)</b> from the list below and measured it against a Mundorf 1µF KP-SN 250V (Tin-Foil-MKP) I had that value at hand.
result for the 1µF MKV:
The dissipation factor @ 1kHz is 0,00019
The dissipation factor @ 10kHz is 0,00096
result for the 1µF KP-SN:
The dissipation factor @ 1kHz is 0,00014
The dissipation factor @ 10kHz is 0,00021
<b>1.)(***)</b>
14x Siemens MKV 6,8µF B25834-K6685-K009
Un=900V/Ueff=640V D:50mmxL:100mm (11/98)
Euros 26,80 (Euros 5,00)
<b>2.)(**)</b>
6x Siemens MKV 6,8µF B25834-F4685-K001
Un=AC-600V/Ui=AC-530V D:35mmxL:94mm (10/98)
Euros 16,50 (Euros 4,00)
<b>3.)</b>
2x Epcos MKV 4,7µF B25834-F5475-K001
Un=AC-750V/Ui=AC-670V D:35mmxL:94mm (09/98)
Euros 16,30 (Euros 5,50)
<b>4.)(*)</b>
15x Siemens MKV 3,3µF B25834-F6335-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:94mm (01/99)
Euros 15,70 (Euros 4,00)
<b>5.)</b>
22x Siemens MKV 1,5µF B25834-F6155-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
Euros 14,40 (Euros 4,50)
<b>6.)</b>
14x Siemens MKV 1µF B25834-B4105-K001
Un=600V/Ueff=420V D:25mmxL:64mm (03/99)
Euros 11,60 (Euros 4,00)
<b>7.)</b>
55x Siemens MKV 0,47µF B25834-B6474-M001
Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
Euros 10,80 (Euros 3,50)
As said above this caps are NOS but the parts marked with: <b>(*...stars)</b> - may have more or less dents due to storage.
The bigger and therefore heavier parts have more and "bigger" dents
(I could also try to make some more detailled pictures if required).
In detail this means:
<b>(***)</b> = all have quite some dents
<b>(**)</b> = most of them have dents
<b>(*) </b> = some of them have some dents
I do not believe that the dents have influence on the performance.
I have measured the one with the "worst" dents I could find and measured it against one nearly without and I can not see any difference.
From the 4,7µF cap <b>3.)</b> I have only two pieces. If there is some reasonable request
on this type (>20) of caps I might be able to get hold of more of them but I`m not sure.
The 4,7µF`s would be without any dents.
The dimensions (D= diameter; L=length) are taken including the connectors but without the
mounting bolt. Dimensions are only approximately.
For more details I can send datasheets of the Series B25834 (PDF:650kB). Just ask me
(I have also datasheets for the B25835 & B25839 series if somebody is interested for reference).
The numbers in brackets behind the dimensions represent the manufactorer data code.
Example: (03/99) means they are manufactored in March 1999.
Nuts for mounting and locking springs are included.
The prices in the listing above not in brackets are the regular retail prices per piece in Euros which You can find at this site:
http://www.buerklin.com
(search for MKV from the main site and please note that the prices given there are without 16% VAT!)
The price in brackets behind that is what I ask for per piece. The parts marked with any <b>(**)`s </b>are cheaper because of the dents. So my asking price is about 1/3 of the normal retail or less for the parts with dents.
I ship worldwide at actual shipping costs.
I can accept Paypal (credit-card payments also) in Euros (new Paypal feature makes this possible for any PP-user) as long You pay the fees I have for receiving payments (about 4% of the total).
The picture below shows the parts offered from the list:
upper row - beginning from left <b>1.)(***)</b> to right <b>3.)</b>
lower row - beginning from left <b>4.)(*)</b> to right <b>7.)</b>
Attachments
update of ongoing of sales:
I`ll update the MKV sales thread periodically in order that people know what is gone already and what is still avaible.
The following pieces are gone to a well known member of this forum:
<b>3.)</b> 2pcs. 4,7µF
<b>4.)</b> 8pcs. 3,3µF
<b>5.)</b> 8pcs. 1,5µF
<b>6.)</b> 8pcs. 1µF
So the 4,7µF type is not avaible anymore as I only had two of them. But as I said in the previous post, if there is a reasonable minimum request of something about >20pcs, I would try to hunt up some more.
I would therefore suggest that if You want to have some, just post in this thread the amount You would like to have (without obligation) in order that others (and me too) can see how things going on.
I`ll update the MKV sales thread periodically in order that people know what is gone already and what is still avaible.
The following pieces are gone to a well known member of this forum:
<b>3.)</b> 2pcs. 4,7µF
<b>4.)</b> 8pcs. 3,3µF
<b>5.)</b> 8pcs. 1,5µF
<b>6.)</b> 8pcs. 1µF
So the 4,7µF type is not avaible anymore as I only had two of them. But as I said in the previous post, if there is a reasonable minimum request of something about >20pcs, I would try to hunt up some more.
I would therefore suggest that if You want to have some, just post in this thread the amount You would like to have (without obligation) in order that others (and me too) can see how things going on.
Petter,
I hope You read this.
Short time after replying to Your hotmail-email-acount directly (not through this board as You`ve disabled this function) I`ve got a spam email.
That`s the very first spam email ever I got on this account and therefore highly suspect this has something to do with the email I´ve send You.
When You send me an email please send it through diy-Audio.com (my email here is enabled) and please also enable Yours to receive emails through this board in order I can answer You without having to send directly to Your hotmail-address again - I´m not keen having this email account flooded with spam also.
Thank You!
MKV sales update follows
I hope You read this.
Short time after replying to Your hotmail-email-acount directly (not through this board as You`ve disabled this function) I`ve got a spam email.
That`s the very first spam email ever I got on this account and therefore highly suspect this has something to do with the email I´ve send You.
When You send me an email please send it through diy-Audio.com (my email here is enabled) and please also enable Yours to receive emails through this board in order I can answer You without having to send directly to Your hotmail-address again - I´m not keen having this email account flooded with spam also.
Thank You!
MKV sales update follows
revised list
further MKV parts that are gone to (another well known) member of this forum:
<b>1.)(***)</b>
14pcs. 6,8µF
<b>7.)</b>
12pcs. 0,47µF
Here the revised list of what type of caps and amounts are currently still avaiable:
<b>2.)(**)</b>
2x Siemens MKV 6,8µF B25834-F4685-K001
Un=AC-600V/Ui=AC-530V D:35mmxL:94mm (10/98)
Euros 16,50 (Euros 4,00)
<b>4.)(*)</b>
7x Siemens MKV 3,3µF B25834-F6335-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:94mm (01/99)
Euros 15,70 (Euros 4,00)
<b>5.)</b>
14x Siemens MKV 1,5µF B25834-F6155-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
Euros 14,40 (Euros 4,50)
<b>6.)</b>
6x Siemens MKV 1µF B25834-B4105-K001
Un=600V/Ueff=420V D:25mmxL:64mm (03/99)
Euros 11,60 (Euros 4,00)
<b>7.)</b>
43x Siemens MKV 0,47µF B25834-B6474-M001
Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
Euros 10,80 (Euros 3,50)
again: prices in brackets are my asking price per piece, the numbers in front are the normal retail prices per piece.
by the way: unless Paypal, of course I also accept cash (Euros please) in an envelope or for German buyers bank wire transfer.
further MKV parts that are gone to (another well known) member of this forum:
<b>1.)(***)</b>
14pcs. 6,8µF
<b>7.)</b>
12pcs. 0,47µF
Here the revised list of what type of caps and amounts are currently still avaiable:
<b>2.)(**)</b>
2x Siemens MKV 6,8µF B25834-F4685-K001
Un=AC-600V/Ui=AC-530V D:35mmxL:94mm (10/98)
Euros 16,50 (Euros 4,00)
<b>4.)(*)</b>
7x Siemens MKV 3,3µF B25834-F6335-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:94mm (01/99)
Euros 15,70 (Euros 4,00)
<b>5.)</b>
14x Siemens MKV 1,5µF B25834-F6155-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
Euros 14,40 (Euros 4,50)
<b>6.)</b>
6x Siemens MKV 1µF B25834-B4105-K001
Un=600V/Ueff=420V D:25mmxL:64mm (03/99)
Euros 11,60 (Euros 4,00)
<b>7.)</b>
43x Siemens MKV 0,47µF B25834-B6474-M001
Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
Euros 10,80 (Euros 3,50)
again: prices in brackets are my asking price per piece, the numbers in front are the normal retail prices per piece.
by the way: unless Paypal, of course I also accept cash (Euros please) in an envelope or for German buyers bank wire transfer.
latest Siemens MKV sales updates
Many caps are gone and on their way out in various parts of the world.
Others will probably (hopefully) be shipped out this week.
The following caps are still left for sale (found a few more in my parts mess
) :
<b>1.)(*)</b>
1x Siemens MKV 6,8µF B25834-K6685-K009
Un=900V/Ueff=640V D:50mmxL:100mm (11/98)
Euros 26,80 (Euros 5,00)
<b>3.)</b>
1x Epcos MKV 4,7µF B25834-F5475-K001
Un=AC-750V/Ui=AC-670V D:35mmxL:94mm (09/98)
Euros 16,30 (Euros 4,00,)
without mounting screw!
<b>4.)(*)</b>
3x Siemens MKV 3,3µF B25834-F6335-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:94mm (01/99)
Euros 15,70 (Euros 4,00, )
one without mounting screw!
<b>5.)</b>
14x Siemens MKV 1,5µF B25834-F6155-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
Euros 14,40 (Euros 4,50)
<b>6.)</b>
4x Siemens MKV 1µF B25834-B4105-K001
Un=600V/Ueff=420V D:25mmxL:64mm (03/99)
Euros 11,60 (Euros 4,00)
<b>7.)</b>
39x Siemens MKV 0,47µF B25834-B6474-M001
Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
Euros 10,80 (Euros 3,50)
here some international shipping rates from Germany:
small parcel (up to 2kg):
Europe: Euro 8,20
World: Euro 12,30
parcel (up to 5kg / 5-10kg) :
EU: 16,50 / 20,50 (Euros)
rest Europe: 25,00 / 35,00 (Euros)
World (USA/Canada etc.): 29,00 / 39,00 (Euros)
rest World: 35,00 / 50,00 (Euros)
Due to the smaller diameter, small amounts (<500gr.) of the 0,47µF types might be shipped somewhat cheaper than the "small-parcel" rate but with 50mm package height restriction (therefore maybe higher risk in shipping damage).
Many caps are gone and on their way out in various parts of the world.
Others will probably (hopefully) be shipped out this week.
The following caps are still left for sale (found a few more in my parts mess
) :<b>1.)(*)</b>
1x Siemens MKV 6,8µF B25834-K6685-K009
Un=900V/Ueff=640V D:50mmxL:100mm (11/98)
Euros 26,80 (Euros 5,00)
<b>3.)</b>
1x Epcos MKV 4,7µF B25834-F5475-K001
Un=AC-750V/Ui=AC-670V D:35mmxL:94mm (09/98)
Euros 16,30 (Euros 4,00,)
without mounting screw!
<b>4.)(*)</b>
3x Siemens MKV 3,3µF B25834-F6335-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:94mm (01/99)
Euros 15,70 (Euros 4,00, )
one without mounting screw!
<b>5.)</b>
14x Siemens MKV 1,5µF B25834-F6155-K001
Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
Euros 14,40 (Euros 4,50)
<b>6.)</b>
4x Siemens MKV 1µF B25834-B4105-K001
Un=600V/Ueff=420V D:25mmxL:64mm (03/99)
Euros 11,60 (Euros 4,00)
<b>7.)</b>
39x Siemens MKV 0,47µF B25834-B6474-M001
Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
Euros 10,80 (Euros 3,50)
here some international shipping rates from Germany:
small parcel (up to 2kg):
Europe: Euro 8,20
World: Euro 12,30
parcel (up to 5kg / 5-10kg) :
EU: 16,50 / 20,50 (Euros)
rest Europe: 25,00 / 35,00 (Euros)
World (USA/Canada etc.): 29,00 / 39,00 (Euros)
rest World: 35,00 / 50,00 (Euros)
Due to the smaller diameter, small amounts (<500gr.) of the 0,47µF types might be shipped somewhat cheaper than the "small-parcel" rate but with 50mm package height restriction (therefore maybe higher risk in shipping damage).
Glad that everything still has arrived
Very sorry again for the big delay in shipping but it was not my fault.
I do not have a clue why overseas shippings from Germany take that incredible long (almost 8 weeks in Peter`s case) although Deutsche-Post specifies 7-12days.......
Saftladen!! (what`s this in English?)
Hello Tyler,
fine that You like them!
Just curious: how did You measure this and at which frequency?
My measurements of the 3.3µF type showed 0,00052 at 1kHz - pretty coincides I would say
Very sorry again for the big delay in shipping but it was not my fault.
I do not have a clue why overseas shippings from Germany take that incredible long (almost 8 weeks in Peter`s case) although Deutsche-Post specifies 7-12days.......
Saftladen!! (what`s this in English?)
Hello Tyler,
fine that You like them!
Just curious: how did You measure this and at which frequency?
My measurements of the 3.3µF type showed 0,00052
at 1kHz - pretty coincides I would say
kasra said:
I tried them today in my speakers. This is only in a tweeter circuit (as this is the only place where I use caps
). The frequency is around 10K.I've been using 1u Jensen copper foil in parallel with 0.4u MIT RTX in parallel with 0,022u silver foil cap.
I prefer those Siemens caps now in that application. My first impression was much bigger soundstage than with the other caps. Also, the sound is extremally smooth, detailed with nice tonal balance, very neutral. I could compare them to the sound of Vishays, but they are not as mellow as Vishays S102 (actually after using Vishays for some time now, I'm not so sure if they are the best choice. I found out that I prefer Rikens better in some locations). They have pins marked 1 & 2. I preferred when output was on pin 2. Also, they sounded better without 0.022 silver bypass.
So, those Siemens are so good, that I decided to buy more
.
Hi folks,
why don't you use simply that caps that are recommended for audio use?
Mundorf silver in oil caps are especially designed for audio application, not really cheap, but much less expensive than the Jensens (1µ 25 Euro, 10µ 70 Euro). They are polypropylene in oil and have outstanding datas.
MKV types are typically used in motor applications.
why don't you use simply that caps that are recommended for audio use?
Mundorf silver in oil caps are especially designed for audio application, not really cheap, but much less expensive than the Jensens (1µ 25 Euro, 10µ 70 Euro). They are polypropylene in oil and have outstanding datas.
MKV types are typically used in motor applications.
Hi Giorgio,
all what is still left is:
21pcs.
Siemens MKV 0,47µF B25834-B6474-M001 Un=900V/Ueff=640V D:25mmxL:64mm (07/98)
and
10pcs.
Siemens MKV 1,5µF B25834-F6155-K001 Un=AC-900V/Ui=AC-780V D:35mmxL:62mm (03/99)
that`s it! The rest is gone
Hi bocka,
why should we do this and not try other things?
I bet You don`t always do what is "recommended" - or why don`t You use 3-pin voltage regulators as it can be seen in 95% of audio equipment?
MKV`s are polypropylen in oil as well and they are much cheaper than Mundorf silver in oil caps (at least as surplus as the ones I sell). Also capacitor datas are not everything when it comes to how they sound, the datas for MKV`s are outstanding as well - I can send You the data-sheets if You want.
Besides this, from what You can read not only in this thread from people who use them, they are really very, very good and although mainly used in industrial applications they seem to be highly suitable in audio applications too. And it wouldn`t be the first time that motor capacitors are used for audio with excellent results.
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