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MG 1 Capacitors

68.150.213.26

Posted on October 17, 2015 at 18:23:02
gwestwood
Audiophile

Posts: 7
Location: alberta
Joined: March 16, 2012



Kinda new at this.I'm replacing the capacitors.The mallory is 12mfd 50 v but the Elpac states 2.0+-20 % I assume 2.0 is mfd which I also understand is the same as uf. Any insight would be great.Any suggestions for caps would also be appreciated
thanks

 

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RE: MG 1 Capacitors, posted on October 18, 2015 at 00:43:13
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
Madisound has the Clarity PX line. Budget priced but certainly better than 'stock'.

I HAD a pair of MG-1 and they were wonderful.

I think Magnepan eventually settled on SOLON caps for a number of years. They'd work, too.

Spending wacky amounts for stuff like 'Mundorf Cosmic Unobtanium in Oil' is not indicated for this speaker.

Replace caps in BOTH panels at once.
Too much is never enough

 

RE: MG 1 Capacitors, posted on October 18, 2015 at 06:10:55
neolith
Audiophile

Posts: 4841
Location: Virginia
Joined: February 21, 2002
Contributor
  Since:
December 2, 2004
No advice on a particular brand. Some comments: 1)The voltage rating is not too important as long as it is 50V or higher 2) exactly matching to 14 mfd is not needed so a 12 mfd + 2.2 mfd (sometimes easier to find) is okay as long as both speakers are the same, 3) different combinations such as (12 + 2) or (10 + 3.9) are ok as well. Finally your replacement caps may be considerably larger (physically) than stock so a neat fit may be a problem. My suggestion is to either do not look at the back of the speaker or close your eyes when you listen :).



"Our head is round in order to allow our thoughts to change direction." Francis Picabia

 

RE: MG 1 Capacitors, posted on October 13, 2015 at 16:45:45
kff
Audiophile

Posts: 1028
Location: SE PA
Joined: October 19, 2006
I would determine the depth that would be good to mount the cap and then see if there is some combination that totals 13-14.5µF by putting them in parallel with is additive.

Partsconeexion had the Solen PB caps that are decent and you can buy much more expensive caps if you want. MUG Files show the schematic of the MG-I as a 13µF cap and you have 14 or there abouts so the exact number isn't important.

Measure, get what fits and adds up to what you need and let us know how it sounds.

 

RE: MG 1 Capacitors, posted on October 13, 2015 at 21:37:18
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
You just reminded me of the 'idea' that caps should be near same value so they handle the HF the same and don't introduce 'problems'. (potential, I'd say)
To that end? Needing 14mfd? A PAIR of 6.8 would be close enough and if you MUST use a bypass? A pair of .22 would work.

Also on 2nd thought, I'd try for 5% if possible and within budget. 20%? Only if I could somehow 'match' them.

The combinations which add up to 14 are varied.

A pair of the 6.8 PX Clarity and the .47 will run about 16$ per speaker AND are 5% rated.

And while I generally don't specifically 'recommend' a part or component, I think these are a good value for intended use.
Too much is never enough

 

RE: MG 1 Capacitors, posted on October 21, 2015 at 17:40:31
gwestwood
Audiophile

Posts: 7
Location: alberta
Joined: March 16, 2012
I just soldered in the new caps .The tweeters work but not the bass.Not sure what I've done.Cant see a break in the bass wires.Any ideas would be great

 

RE: MG 1 Capacitors, posted on October 21, 2015 at 18:48:51
The bass drivers can be checked with an ohmmeter.....it should show about five ohms. If you don't have an ohmmeter just use a standard "D" cell battery and connect/disconnect for an audible indication.

If you can't see a break in the bass wires then there's a bad connection somewhere.

Both speakers doing the same thing??

Dave.

 

RE: MG 1 Capacitors, posted on October 21, 2015 at 21:55:24
gwestwood
Audiophile

Posts: 7
Location: alberta
Joined: March 16, 2012
Haven't done the second speaker yet.I will borrow my sons meter and have a look.I will update when I can.Thanks.

 

RE: MG 1 Capacitors, posted on October 24, 2015 at 16:07:28
Satie
Audiophile

Posts: 5426
Joined: July 6, 2002
What caps did you get?

 

RE: MG 1 Capacitors, posted on October 26, 2015 at 20:35:32
gwestwood
Audiophile

Posts: 7
Location: alberta
Joined: March 16, 2012
I am using Clarity caps esa series.I actually have two sets of the mg-1 and recapped the first pair earlier with the same caps with good results

 

RE: MG 1 Capacitors, posted on October 28, 2015 at 15:48:58
gwestwood
Audiophile

Posts: 7
Location: alberta
Joined: March 16, 2012
I am still having trouble getting the bass panel to work.I have changed the caps ,wires and hookups on both speakers One works great the other no bass .When I run a jumper wire from connection board where one side of the caps are hooked up to the other connection where the other side is hooked up I get Bass.With out the wire no bass.I'm thinking I might need to change the connection board or capacitor issue.This is the 2nd pair of mg-1 s Ive recapped I had no issues with the first pair.Any ideas or suggestions would be appreciated

 

RE: MG 1 Capacitors, posted on October 28, 2015 at 20:04:15
Satie
Audiophile

Posts: 5426
Joined: July 6, 2002
can you test al the segments in the entire wiring scheme to locate the disconnect or is it out of reacch? If out of reach then just disconnect the old wires and put in new wires and caps according to the schematic. Obviously your test is showing that the bass panel is functioning fine. In that test you bypassed just the cap(s) with a wire?

 

RE: MG 1 Capacitors, posted on November 24, 2015 at 20:42:22
gwestwood
Audiophile

Posts: 7
Location: alberta
Joined: March 16, 2012
I haven't worked on these for a month .Too much stuff going on till today.I put in a new connection board and I have the same issues.The other speaker works fine after the recap.Could it be possible that the caps I'm using in the trouble some speaker have issues from the factory?

 

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