[[email protected]]

On Wednesday, February 12, 2020 at 2:53:59 PM UTC-8, geoff wrote:
On 13/02/2020 6:03 am, Don Pearce wrote:
On 12 Feb 2020 12:01:53 -0500, (Scott Dorsey) wrote:

wrote:
I have an original set of Event 20/20 bas self-powered monitors which start=
ed making a hum on one side. I removed the amplifier assembly and noticed o=
ne of the filter capacitors is bulging a bit. I replaced the filter caps on=
a set of self-powered Tannoy's several years ago with excellent advice fro=
m this group so I thought I'd ask again.

The original caps are Rubicon C E 63V 10000 uF (M), unsure what the 'M' is =
for. Perhaps if someone could steer me towards a particular brand/type whic=
h would be suitable. I wasn't successful using the DigiKey filters to locat=
e a suitable replacement. Any help would be greatly appreciated.

Digikey filters are great. Use the pin spacing, and look for something
rated for 105C from Panasonic. Make sure the outside diameter and length
aren't so much larger that it doesn't fit, but nobody can do that for you
without seeing the board. Always specify "in stock" in the search as well.

Initially when Digikey opened up, Panasonic was the only capacitor
manufacturer that they carried, so I just got in the habit of using them
from Digi-Key. Other vendors are fine but I tend to buy Panasonic all other
things being equal.
--scott

I did a long-life stress test on electrolytics a few years back.
Panasonic, Rubycon and Nichicon were the top of the heap, with not
much to choose between them. The 105C rating is a good idea.

d



I only use 105°C in active speakers, or pretty much anywhere else come
to think of it. Have seen so many 85°C dead in places where you would
expect them to be OK.

geoff

The Rubicon is 85°C. Perhaps this is timely upgrade. These Event speakers aren't my main monitors but I use them often enough. I like the convenience of a self-powered speaker. My main monitors are older still...

[[email protected]]

On Wednesday, February 12, 2020 at 5:34:26 PM UTC-8, wrote:
On Wednesday, February 12, 2020 at 2:53:59 PM UTC-8, geoff wrote:
On 13/02/2020 6:03 am, Don Pearce wrote:
On 12 Feb 2020 12:01:53 -0500, (Scott Dorsey) wrote:

wrote:
I have an original set of Event 20/20 bas self-powered monitors which start=
ed making a hum on one side. I removed the amplifier assembly and noticed o=
ne of the filter capacitors is bulging a bit. I replaced the filter caps on=
a set of self-powered Tannoy's several years ago with excellent advice fro=
m this group so I thought I'd ask again.

The original caps are Rubicon C E 63V 10000 uF (M), unsure what the 'M' is =
for. Perhaps if someone could steer me towards a particular brand/type whic=
h would be suitable. I wasn't successful using the DigiKey filters to locat=
e a suitable replacement. Any help would be greatly appreciated.

Digikey filters are great. Use the pin spacing, and look for something
rated for 105C from Panasonic. Make sure the outside diameter and length
aren't so much larger that it doesn't fit, but nobody can do that for you
without seeing the board. Always specify "in stock" in the search as well.

Initially when Digikey opened up, Panasonic was the only capacitor
manufacturer that they carried, so I just got in the habit of using them
from Digi-Key. Other vendors are fine but I tend to buy Panasonic all other
things being equal.
--scott

I did a long-life stress test on electrolytics a few years back.
Panasonic, Rubycon and Nichicon were the top of the heap, with not
much to choose between them. The 105C rating is a good idea.

d



I only use 105°C in active speakers, or pretty much anywhere else come
to think of it. Have seen so many 85°C dead in places where you would
expect them to be OK.

geoff

The Rubicon is 85°C. Perhaps this is timely upgrade. These Event speakers aren't my main monitors but I use them often enough. I like the convenience of a self-powered speaker. My main monitors are older still...

Scott's right about the 'in-stock' search keyword. I wasn't paying attention to this initially, but it certainly made it simpler for somebody looking for merely 4 capacitors. Here is what I ordered:

https://www.digikey.com/products/en?...s=493-13365-ND

Thanks as always. Great group.

[John Hardy]

On 2/13/2020 7:24 PM, wrote:
On Wednesday, February 12, 2020 at 5:34:26 PM UTC-8, wrote:
On Wednesday, February 12, 2020 at 2:53:59 PM UTC-8, geoff wrote:
On 13/02/2020 6:03 am, Don Pearce wrote:
On 12 Feb 2020 12:01:53 -0500, (Scott Dorsey) wrote:

wrote:
I have an original set of Event 20/20 bas self-powered monitors which start=
ed making a hum on one side. I removed the amplifier assembly and noticed o=
ne of the filter capacitors is bulging a bit. I replaced the filter caps on=
a set of self-powered Tannoy's several years ago with excellent advice fro=
m this group so I thought I'd ask again.

The original caps are Rubicon C E 63V 10000 uF (M), unsure what the 'M' is =
for. Perhaps if someone could steer me towards a particular brand/type whic=
h would be suitable. I wasn't successful using the DigiKey filters to locat=
e a suitable replacement. Any help would be greatly appreciated.

Digikey filters are great. Use the pin spacing, and look for something
rated for 105C from Panasonic. Make sure the outside diameter and length
aren't so much larger that it doesn't fit, but nobody can do that for you
without seeing the board. Always specify "in stock" in the search as well.

Initially when Digikey opened up, Panasonic was the only capacitor
manufacturer that they carried, so I just got in the habit of using them
from Digi-Key. Other vendors are fine but I tend to buy Panasonic all other
things being equal.
--scott

I did a long-life stress test on electrolytics a few years back.
Panasonic, Rubycon and Nichicon were the top of the heap, with not
much to choose between them. The 105C rating is a good idea.

d



I only use 105°C in active speakers, or pretty much anywhere else come
to think of it. Have seen so many 85°C dead in places where you would
expect them to be OK.

geoff

The Rubicon is 85°C. Perhaps this is timely upgrade. These Event speakers aren't my main monitors but I use them often enough. I like the convenience of a self-powered speaker. My main monitors are older still...

Scott's right about the 'in-stock' search keyword. I wasn't paying attention to this initially, but it certainly made it simpler for somebody looking for merely 4 capacitors. Here is what I ordered:

https://www.digikey.com/products/en?...s=493-13365-ND

Thanks as always. Great group.


"Lifetime @ Temp.: 1000 Hrs @ 85°C"

That is the shortest life rating at the lowest temperature I've ever seen!

John Hardy

[Scott Dorsey]

John Hardy wrote:

"Lifetime @ Temp.: 1000 Hrs @ 85°C"

That is the shortest life rating at the lowest temperature I've ever seen!

"The warranty is 90 days. If it fails after that, it's not our problem."
-- Engineer at Fisher, 1980 or so
--
"C'est un Nagra. C'est suisse, et tres, tres precis."