Author Topic: duelund caps issues  (Read 15419 times)

Offline kajak12

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duelund caps issues
« on: October 11, 2010, 07:32:33 PM »
i know of 3 caps failing in killer dacs caps will be replaced seems their is a quality control issue with the caps or a manufacturing fault.
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline Jehuty

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Re: duelund caps issues
« Reply #1 on: October 11, 2010, 08:00:08 PM »
Yes, it happened to me once too. Any word from the manufacturer Mario?

Cheers,
William
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Offline kajak12

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Re: duelund caps issues
« Reply #2 on: October 11, 2010, 08:06:17 PM »
Yes, it happened to me once too. Any word from the manufacturer Mario?

Cheers,
William

mike lenehan is taking care of it he sent a email off today we have to wait until its sorted out.i wish i didnt duelund caps but their is nothing else that does the magic. : :'( :'( :'(
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline Jehuty

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Re: duelund caps issues
« Reply #3 on: October 11, 2010, 08:15:12 PM »
Sorry to hear that Mario, I hope things work out well then... I've been lucky with my Duelund caps so far (Steven replaced it with a new one before I bought my killerDAC). How did your caps fail? How long have you been running them?
« Last Edit: October 11, 2010, 08:18:21 PM by Jehuty »
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Offline kajak12

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Re: duelund caps issues
« Reply #4 on: October 11, 2010, 08:27:58 PM »
Sorry to hear that Mario, I hope things work out well then... I've been lucky with my Duelund caps so far (Steven replaced it with a new one before I bought my killerDAC). How did your caps fail? How long have you been running them?
i was setting :' up my mates system with some ml1+R and  a sub it all started well then we started to hear a distortion in the midrange.
the volume would only work at the lower end of the scale.i thought his volume pot packed it,so i changed it and still we had no sound at louder levels.by swapping interconnects from left to right channel i worked out that its the dac.so i took it home got my multimeter out and tested for dc voltage on the output.left channel 0.00  right channel 51v dc.took the cap out and put in a auricap no more dc voltage on the channel.

my right channel is stuffed aswell but i have a input cap on my amp so i can still listen to music.

caps have  18 months usage  :'(  not to worry the main thing is it can be fixed thank god i know that dac inside and out ;D
still discovering the link between electronics and audio reproduction.so much to learn and so little time

crazikid

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Re: duelund caps issues
« Reply #5 on: October 11, 2010, 08:38:55 PM »
mate.. thats sh!t.

Offline mcb

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Re: duelund caps issues
« Reply #6 on: October 11, 2010, 08:50:44 PM »
Hmm,

That is not good.  Hopefully the ones being used for cross-overs don't have the same issues.  Just a tad harder to change them out.

Offline ozmillsy

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Re: duelund caps issues
« Reply #7 on: October 11, 2010, 09:06:24 PM »
it's a pain,  but is a small price to pay, for these pieces of pure gold.

the bigger worry is if duelund goes out of business (single person operation, with health issues). 

they'll become priceless.   

It's all about the music,, not the equipment.

Offline Jehuty

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Re: duelund caps issues
« Reply #8 on: October 11, 2010, 09:23:35 PM »
It's time to collect all Duelund caps we can get then  ;)
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Offline kajak12

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Re: duelund caps issues
« Reply #9 on: October 11, 2010, 09:26:02 PM »
it's a pain,  but is a small price to pay, for these pieces of pure gold.

the bigger worry is if duelund goes out of business (single person operation, with health issues). 

they'll become priceless.   


i am sure somebody will take over oz its like making your own gold
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline kajak12

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Re: duelund caps issues
« Reply #10 on: October 11, 2010, 09:28:00 PM »
Hmm,

That is not good.  Hopefully the ones being used for cross-overs don't have the same issues.  Just a tad harder to change them out.
murray the good news is that they come with a 5 year warranty for us,not so good for mike
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline ozmillsy

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Re: duelund caps issues
« Reply #11 on: October 11, 2010, 09:32:06 PM »
i am sure somebody will take over oz its like making your own gold

Mario,  you need to find a way to get over to Denmark,  and learn all the secrets.   8)    I'm serious !  :o  ;D
It's all about the music,, not the equipment.

crazikid

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Re: duelund caps issues
« Reply #12 on: October 11, 2010, 09:39:39 PM »
i believe mr jensen makes mr duelund caps.

Offline kajak12

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Re: duelund caps issues
« Reply #13 on: October 11, 2010, 09:39:54 PM »
i am sure somebody will take over oz its like making your own gold

Mario,  you need to find a way to get over to Denmark,  and learn all the secrets.   8)    I'm serious !  :o  ;D
i am affraid i would not come back until i had 220uf 300v duelunds for my dac instead of jensens,and all duelunds in the digital power supply
(they should make chokes aswell) i cant imagine listening to anyother caps after a duelund in the killer
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline kajak12

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Re: duelund caps issues
« Reply #14 on: October 11, 2010, 09:41:16 PM »
i believe mr jensen makes mr duelund caps.
they get the raw materials from jensen and do their own thing with it.
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline omodo

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Re: duelund caps issues
« Reply #15 on: October 11, 2010, 10:03:16 PM »
http://www.stereotimes.com/commDueland.shtml

looks like theres a few years left in ol' Frederik..

Offline stevenvalve

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Re: duelund caps issues
« Reply #16 on: October 12, 2010, 02:18:05 AM »
i know of 3 caps failing in killer dacs caps will be replaced seems their is a quality control issue with the caps or a manufacturing fault.

The ones we use now, are rated at 100v- 200V, we actually use far less voltage than this. They make 400V versions. It may be wise to put 400v 2.2 uf in now, and use the others for the clock or whatever. If they fail they are wasted. Mine have been going for over two years, but i am going to order 400v versions from now on, they may sound better, who knows usually bigger is better.

Offline omodo

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Re: duelund caps issues
« Reply #17 on: October 12, 2010, 11:19:37 AM »
hmm, you are using 200Vdc rated caps? what's the B+?

avian

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Re: duelund caps issues
« Reply #18 on: October 12, 2010, 11:38:10 AM »
hmm, you are using 200Vdc rated caps? what's the B+?

...and just as relevant, is there a start up timer (or something similar) to stop the full B+ hitting the plate resistor before the output tube has fully warmed? you realise the full B+ is present on the output cap at startup otherwise right?  Perhaps that would invalidate any duelund warranty since they were are being used out of spec?".

Offline fallsaudio

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Re: duelund caps issues
« Reply #19 on: October 12, 2010, 01:59:25 PM »
HI ,
      As mentioned we can add a timer that disconnect the dueland from the circuit and after 60 sec reconnects or the easyest way would put a switch in series with the cap but both these ideas will cause a loud pop.
       I will give this some thought and get back you .
                                                               Paul