Capacitor Krell KSA 100

[Alex helge]

Hello
I should like the capacitor to change at the driver-boards my Krell KSA 100.
What can I take for capacitors?
Is the Original capacitor very good or is it a standard norm capacitor.
Must the capacitor over 85C*

 

[Tube_Dude]

Krell capacitor!

Is the Original capacitor very good or is it a standard norm capacitor

Yes its a good capacitor but may be a little old and dry as the KSA100 runs hot...

It is good??..Yes is a german from Ero capacitor!

Must the capacitor over 85C*

If possible it help...

Jorge

 

[Alex helge]

Capacitor KSA 100

Many thank for answer!
Where can I buy in Germany ?
Best regards

 

[Tube_Dude]

Where????

Where can I buy in Germany ?

Sorry...i live in Portugal....i don't know!

But as you live in germany!!

Maybe a good component suplyer shop.

Best regards

Jorge

 

[Alex helge]

capacitor KSA 100

Hi Jorge
Is >not a ERO capacitor!
Is a RDE Capacitor it´s made in the USA or Country
Many thank for your answer.
Alex

 

[Tube_Dude]

To be ...or not to be!

Is >not a ERO capacitor!

To much years looking to tinny electronic components and circuit boards...i must change my glass lenses...

Jorge

PS are you sure that RDE is not a germany capacitor maker???

 

[Christer]

I may be wrong, but I think they are ROE caps, not RDE, and
that ROE are made in Germany.

 

[Tube_Dude]

Now we are two!!

Jorge

 

[rickpt]

Roe means roederstein... a German manufacturer acquired by vishay

I'm absolutely sure that’s a roederstein cap

 

[RobPhill33]

May I ask why you want to change the caps?

 

[jean-paul]

Old electrolytic caps in warm class A amps have a tendency of drying out so replacing them is no useless luxury. Certainly not with this age.

Panasonic FC maybe a good replacement. Check the sizes first and compare them to the original ROE Roederstein caps if they fit on the PCB. Black Gate won't fit on the PCB I guess.

To answer your question: the ROE were standard industrial quality caps that can not be compared with the quality you can obtain today. Using newer types will give good results if choosen with care.

http://www.panasonic.com/industrial/components/pdf/ee080_eeu_fc_dne.pdf

 

[RobPhill33]

I guess it's an easy improvement to make. This amp could be improved quite a bit with some mirrors and CCS, but I suppose that mod would be considerably more complicated.

 

[jean-paul]

And it won't be a KSA 100 anymore.

 

[Tube_Dude]

Wise man!

This amp could be improved quite a bit with some mirrors and CCS, but I suppose that mod would be considerably more complicated.

I 100% agree with you...a topologie mod make much more improvements.....

as you have sugested a mirror can increase the slew rate...and the CCS increase PSRR and open loop gain...but need more home work...

So.... the "vogue" of changing the components !

Jorge

 

[Tube_Dude]

The KSA 100

And it won't be a KSA 100 anymore.

No it wil be a KSA 100 Improved!...or MK1...oe SE...or.......................

Jorge

 

[Alex helge]

capacitor KSA 100

Hello
Thank for answers.
I must the trimmer change on the driver board.
the capacitors are perhaps dry.
the capacitors are 15 years old .


The speaker relays are ROE too.
look picture

 

[jean-paul]

So.... the "vogue" of changing the components !

Changing electrolytics in an amp because they have worn out of age and heat is not a vogue. Wanting to change an original Krell to something undefined is.

I don't like to bring my car to a workshop for changing oil and filters and then get the answer that I should change the engine because it would run better.

Alex, if you just want to service dry caps you can use Panasonic FC with excellent results. Schuro sells them.

http://www.schuro.de/preisl-pana-fc.htm

Check the BG's too as they really are better and if you love the amp and want to keep it in good shape. BG is not available as far as I know in 105 degrees Ceslius variants and they are terribly expensive.

If you want to change the amp alltogether as some advise you to do you really need the skills for designing. Maybe that's not what you want ?

Mit freundlichem Gruss,

Jean-Paul

 

[Tube_Dude]

A wise Man!

I don't like to bring my car to a workshop for changing oil and filters and then get the answer that I should change the engine because it would run better

But if the opinion for changing the engine is not from the owner of the workshop...but from your own knowledge...then we are in business!

Jorge

 

[jean-paul]

OK Jorge, the guy asks something you don't give an answer to. He wants replacement caps for his Krell.

In your infinite wisdom you advise him to change things he didn't ask for and maybe has not the skills nor will for. If he would have wanted that he would have asked that.

 

[Alex helge]

capacitors ksa 100

Many thank for answer
A picture on the Driver Board the KSA 100
Bye Alex