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Old 9th October 2007, 11:49 AM   #41
KP11520 is offline KP11520  United States
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Hi Dave,

You have good ears and the time you spend putting it to words is not a waste of time. Here is a place that will offer validation!

Have you seen this web-site:
http://www.ecp.cc/cap-notes.html

Were you able to get the Wima samples from Inter-Technical?

Thanks!

Regards//Keith
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Old 9th October 2007, 02:39 PM   #42
KP11520 is offline KP11520  United States
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Hi Michael,

You sent something to Dave to build or use as a "Burn in circuit". Is it easy to build? Are you able to share it with others? If so, I am interested in making one!

Thanks!

Regards//Keith
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Old 9th October 2007, 05:13 PM   #43
Davet is offline Davet  United States
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Quote:
Originally posted by KP11520
Hi Michael,

You sent something to Dave to build or use as a "Burn in circuit". Is it easy to build? Are you able to share it with others? If so, I am interested in making one!

Keith
The circuit is very simple. I use a FM tumer for the signal source. Below is the Mardis burn-in circuit.

Click the image to open in full size.

The Film caps I am testing with the exception of the MKTs will have better than 600 hours burn-in time on them. I noted the MKTs seemed to get better the more I played them. I suspect they will get better with more time.
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Old 9th October 2007, 05:29 PM   #44
KP11520 is offline KP11520  United States
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Hey Dave,

Thank you!

Do you use a 1.5 volt or 9 volt battery or a DC power supply @ how much voltage? How long do batteries last if thats what you use?

Also for the signal, analog RCA output from an FM Tuner?

I guess this is how you "burn in" up to 4 Caps at the same time! That's exactly how many I want to do!

I'll go find a small proto/breadboard so I don't have to solder any of the leads from the Caps!

Great!

Regards//Keith
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Old 9th October 2007, 05:59 PM   #45
Pano is online now Pano  United States
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Well Dave, those EPCOS MKT sound like a great find. Excuse the pun.

From you description, I'd call them "neutral - without loss of detail."

As for the burn-in circuit, it's simple. Put as many caps in it as you like. The idea is to mimic the input circuit of the T-Amps. That's what the battery is for - DC bias. About 3V (2 cells) should be ideal, but as long as it's 2V or more, it shouldn't matter much. The 22uF cap blocks the DC back into the radio.

The radio is just a simple source of line level musical signal. Again, just meant to mimic the input of an amp. I use the earphone jack, but the RCA should do just as well. Don't forget the resistor! Otherwise you'll have an AC short. Any value from 10-50K will work.
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Old 9th October 2007, 11:54 PM   #46
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Default Re: EPCOS MKT Test Result

Quote:
Originally posted by Davet
This capacitor is lacking very little and its strength is its size and cost.
Your description of what the Epcos MKT caps sound like jives with what I've heard as well. Great sound at a fraction of the size and price of boutique caps is what they'll get you. The Auricaps were slightly better to my ears but their price is pretty hard to swallow. After all is said and done you should compare your favorite cap to no cap (DC coupled) and see which you like better. I've already made up my mind
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Old 10th October 2007, 09:54 PM   #47
rajacat is offline rajacat  United States
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Default Re: Re: EPCOS MKT Test Result

Quote:
Originally posted by BWRX


Your description of what the Epcos MKT caps sound like jives with what I've heard as well. Great sound at a fraction of the size and price of boutique caps is what they'll get you. The Auricaps were slightly better to my ears but their price is pretty hard to swallow. After all is said and done you should compare your favorite cap to no cap (DC coupled) and see which you like better. I've already made up my mind
Hi Brian,

Do you have a link to a source for the EPCOS MKT 2.2-MFD capacitors?

Thanks,

Roy
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Old 10th October 2007, 10:21 PM   #48
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Default Re: Re: Re: EPCOS MKT Test Result

Quote:
Originally posted by rajacat

Hi Brian,

Do you have a link to a source for the EPCOS MKT 2.2-MFD capacitors?

Thanks,

Roy

Quote:
These EPCOS MKT 2.2-MFD capacitors were provided to me by BWRX. These were his favorites capacitors after Auricaps. These caps cost $1.27 (USD) from Digikey.com the Part Number: 495-1127-HD. The cost of this cap less shipping is 7% the cost of an Auricap.
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Old 10th October 2007, 10:24 PM   #49
Davet is offline Davet  United States
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Default Re: EPCOS MKT Test Result

Quote:
Originally posted by Davet

These EPCOS MKT 2.2-MFD capacitors were provided to me by BWRX. These were his favorites capacitors after Auricaps. These caps cost $1.27 (USD) from Digikey.com the Part Number: 495-1127-HD. The cost of this cap less shipping is 7% the cost of an Auricap.
See the above the link is DigiKey
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Old 10th October 2007, 10:37 PM   #50
toolkit is offline toolkit  United Kingdom
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This one in the UK?
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