[[email protected]]

I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

[Don Pearce[_3_]]

On Tue, 11 Feb 2020 10:02:49 -0800 (PST), wrote:

I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Find something of the right mechanical size here. Digikey are a good
supplier

https://www.digikey.co.uk/products/e...=1&pageSize=25

d

[[email protected]]

On Tuesday, February 11, 2020 at 12:08:19 PM UTC-8, Don Pearce wrote:
On Tue, 11 Feb 2020 10:02:49 -0800 (PST), wrote:

I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Find something of the right mechanical size here. Digikey are a good
supplier

https://www.digikey.co.uk/products/e...=1&pageSize=25

d

Thanks Don. I've been playing with the various filtering options and perhaps narrowed it down somewhat. Although I'm not that familiar with the various mounting techniques. How would I narrow the selection to 2 wires that you solder and clip? Mostly I see these snap on type capacitors. Thanks.

[geoff]

On 12/02/2020 2:40 pm, wrote:
On Tuesday, February 11, 2020 at 12:08:19 PM UTC-8, Don Pearce wrote:
On Tue, 11 Feb 2020 10:02:49 -0800 (PST), wrote:

I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Find something of the right mechanical size here. Digikey are a good
supplier

https://www.digikey.co.uk/products/e...=1&pageSize=25

d

Thanks Don. I've been playing with the various filtering options and perhaps narrowed it down somewhat. Although I'm not that familiar with the various mounting techniques. How would I narrow the selection to 2 wires that you solder and clip? Mostly I see these snap on type capacitors. Thanks.


You won't get 'wires' for this size cap. Select "Snap-on" and your other
criteria (capacitance, voltage, and size) and Bob's your uncle.

geoff

[Scott Dorsey]

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

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Don Pearce[_3_]]

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

[geoff]

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

[[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."

[sTeeVee]

On Tuesday, February 11, 2020 at 1:02:53 PM UTC-5, wrote:
I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Almost doesnt matter what the physical config is as long as electrical nd thermal specs are met. If you are having any trouble chasing down the exact mechanical specs you can always afix the cap internally and jumper into the circuit by soldering pieces of insulated wire on all ends. Good luck

[[email protected]]

On Saturday, February 15, 2020 at 6:53:30 AM UTC-8, sTeeVee wrote:
On Tuesday, February 11, 2020 at 1:02:53 PM UTC-5, wrote:
I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Almost doesnt matter what the physical config is as long as electrical nd thermal specs are met. If you are having any trouble chasing down the exact mechanical specs you can always afix the cap internally and jumper into the circuit by soldering pieces of insulated wire on all ends. Good luck

Good advice. I was considerably constrained trying to locate a proper mechanical fit. Some years ago I chased down an annoying vibration inside one these monitors and I wanted a cap to sit securely to the board so I could use silicon adhesive sealant to further secure the mount. It was a difficult chore tracking down the annoying vibration so I wanted to avoid that issue again.

[geoff]

On 16/02/2020 6:02 am, wrote:
On Saturday, February 15, 2020 at 6:53:30 AM UTC-8, sTeeVee wrote:
On Tuesday, February 11, 2020 at 1:02:53 PM UTC-5, wrote:
I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Almost doesnt matter what the physical config is as long as electrical nd thermal specs are met. If you are having any trouble chasing down the exact mechanical specs you can always afix the cap internally and jumper into the circuit by soldering pieces of insulated wire on all ends. Good luck

Good advice. I was considerably constrained trying to locate a proper mechanical fit. Some years ago I chased down an annoying vibration inside one these monitors and I wanted a cap to sit securely to the board so I could use silicon adhesive sealant to further secure the mount. It was a difficult chore tracking down the annoying vibration so I wanted to avoid that issue again.


In an active speaker sound physical mounting is an issue (vibration !),
so if not a proper fit some arrangement is necessary (non-corrosive
silicone best, else hot-melt glue).

In fact even *if* a proper fit such measures are often applied.

geoff

[[email protected]]

On Saturday, February 15, 2020 at 4:19:06 PM UTC-8, geoff wrote:
On 16/02/2020 6:02 am, wrote:
On Saturday, February 15, 2020 at 6:53:30 AM UTC-8, sTeeVee wrote:
On Tuesday, February 11, 2020 at 1:02:53 PM UTC-5, wrote:
I have an original set of Event 20/20 bas self-powered monitors which started making a hum on one side. I removed the amplifier assembly and noticed one 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 from 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 which would be suitable. I wasn't successful using the DigiKey filters to locate a suitable replacement. Any help would be greatly appreciated.

Gary V

Almost doesnt matter what the physical config is as long as electrical nd thermal specs are met. If you are having any trouble chasing down the exact mechanical specs you can always afix the cap internally and jumper into the circuit by soldering pieces of insulated wire on all ends. Good luck

Good advice. I was considerably constrained trying to locate a proper mechanical fit. Some years ago I chased down an annoying vibration inside one these monitors and I wanted a cap to sit securely to the board so I could use silicon adhesive sealant to further secure the mount. It was a difficult chore tracking down the annoying vibration so I wanted to avoid that issue again.


In an active speaker sound physical mounting is an issue (vibration !),
so if not a proper fit some arrangement is necessary (non-corrosive
silicone best, else hot-melt glue).

In fact even *if* a proper fit such measures are often applied.

geoff

Yes, it's a real pain to solve vibration issues in an active speaker. I installed the new capacitors and the hum disappeared. They were a perfect fit; seating nicely against the circuit board. I had some left over silicone adhesive that Scott recommended from a previous project, so I applied it liberally. Interestingly, when I dissected the 2nd speaker it had a different filter capacitor with a slightly lower voltage rating and smaller diameter. Thanks again.

[Phil Allison[_4_]]

wrote:

--------------------------


Yes, it's a real pain to solve vibration issues in an active speaker.


** Not really, just smother everything is "Yellow Glue" and make sure you give purchasers a short warranty.

Works for Alesis and KRK.


...... Phil ;-)

[geoff]

On 17/02/2020 7:41 pm, Phil Allison wrote:
wrote:

--------------------------


Yes, it's a real pain to solve vibration issues in an active speaker.


** Not really, just smother everything is "Yellow Glue" and make sure you give purchasers a short warranty.

Works for Alesis and KRK.


..... Phil ;-)





Much consumer stuff has that 'yellow glue', which goes brown and
conductive after living in heat for a while ;-/

geoff

[T.W. Day]

Much consumer stuff has that 'yellow glue', which goes brown and
conductive after living in heat for a while ;-/

geoff

That hot glue doesn't hold up to high temperatures for long, either. Get hot enough and it softens, stay above 100F for a bunch of hours and it turns to powder. I prefer high temp silicone adhesive for big caps, myself.