AudioNervosa

Self Medicating => General DIY => Topic started by: BobM on January 16, 2014, 05:48:20 AM

Title: favorite bypass caps
Post by: BobM on January 16, 2014, 05:48:20 AM
I know, I know ... V-Caps or Duelands, any value up to .1uF

But what others have you tried and liked?

Title: Re: favorite bypass caps
Post by: rollo on January 16, 2014, 09:38:44 AM
The Auri T Teflon. Mundorf silver/gold in oil are nice as well.


charles
Title: Re: favorite bypass caps
Post by: DaveC on January 16, 2014, 10:10:04 AM
RelCap PCU sound nice and are affordable for copper foil caps.

In any case I have noticed copper foil caps sound nice, so I'd go with one of them. Jupiter is coming out with new copper foil caps that are supposed to be comparable to Duelund for much less $ so it might be worth calling.

Title: Re: favorite bypass caps
Post by: richidoo on January 16, 2014, 11:25:19 AM
Vishay MKT-1822
Title: Re: favorite bypass caps
Post by: BobM on January 16, 2014, 12:41:11 PM
Do you mean the Vishay MKP1837 Rich?

If not, then what's the diff between them IYO?

Anyone have any info on the Mundorf EVO series vs their Silver + Oil series? The Aluminum + Oil actually seem reasonably priced in small values.
Title: Re: favorite bypass caps
Post by: richidoo on January 16, 2014, 01:49:12 PM
1822 polyester. 1837 PP. I tried 1837 after hype thread on AC. Didn't like it, butit was better than Solen, the worst.
Title: Re: favorite bypass caps
Post by: DaveC on January 16, 2014, 02:59:29 PM
Yeah, I tried Solen MKP just to see how much worse a cheap cap would be and it's way worse than I thought it would be. It did a lot of damage to the sound.

BobM, the Mundorf S/O was pretty good in my amp but the RelCap PCU is quite a bit better, and 2x the price as well.

For less expensive (Mundorf s/o range) options Feastrex was offering a cap... Urushi I think... looked like a PP cap with some damping added. It was very, very good. I won a pair at rmaf 2 years ago and tried them out.

Title: Re: favorite bypass caps
Post by: BobM on January 17, 2014, 06:04:33 AM
I've used the following myself:

- Russian teflons (very nice, open and transparent, but they have some grain and a bit of forwardness to them). Inexpensive.
- Sonicap Gen II - they are smooth but don't quite have the air and transparency of the teflons. Inexpensive
- Relcap RT's - also transparent but more forward sounding than I prefer
- V-Cap teflons - very nice and open and beautify, but terribly expensive
- Dueland Alexandria's - these are the nicest bypass cap's I have heard. They do it all. Unfortunately Partscoinnexion is out of stock and there is no other distributor (yet).
- Sonicap Platinums - I have these as coupling caps in my preamp. They don't need a bypass. More expensive than I want for an added bypass cap.
Title: Re: favorite bypass caps
Post by: richidoo on January 17, 2014, 07:34:11 AM
If there is a big difference in quality bt main and bypass film caps then the two ranges are split and sound different. If the required capacitance allows decent film cap then I would pick something nice that doesn't need a bypass. I like the Jantzen SuperiorZ for good value with nice highs. But if the required capacitance is too large for film cap (>50-100uF) then a bypass around a good electrolytic is a good idea. Ideal ratio of bypass cap to main cap is 1:100.
Title: Re: favorite bypass caps
Post by: rollo on January 17, 2014, 08:17:06 AM
  If money was no object then by all means a Duelund CAST [ copper] with CAST silver bypass.
   If one can change the input cap to a Aura T then use Duelund CAST at output it will give ya complete neutrality in and Duelund flavor out. Our club member Les has done this for two of his components. Excellent results.
   If using a SS amp then the cap used will have a larger influence on sonics. With a tubed component the tube used with cap is the key. Synergy. From my experience the VH audio teflons are great with the RCA 211 [ rich] output on the Consonance Cyber 211. When using the GE 211 [ bright ] the VH is just to much of a good thing. With the Duelund CAST and GE 211 heaven. Same experience with my Loesch & wWeisner preamp. When using a RCA cathode follower the MIT cap was just fine. When tube was changed to a Mullard the Duelund Alexandra was King.
    It is more than the cap that needs to be considered.


charles
Title: Re: favorite bypass caps
Post by: Response Audio on January 26, 2014, 10:22:31 AM
I notice some mention of bypassing caps in amps. I have never had good results in doing this with coupling caps unless there is a large value electrolytic. Cathode bypass is a different story.

Preamps on the other hand provide a lot of options. I do prefer to bypass coupling caps in preamps unless a high quality cap that provides tbe sound you want is already used. Caps such as Duelund or V-Cap Teflon do not require bypassing IMHO.

The Purity Ultra preamp uses a large Duelund copper foil cap with .50uF Silver foil bypass built in. Not a cheap cap by anybody's standards but the best cap I have ever come across.

I have found that the V-Cap TFTF or CUTF is a great bypass capacitor for most any application. I especially like the OIMP with a Teflon bypass.

I would like to hear opinions from anyone who has any experience with the Mundorf EVO oil capacitors or the new Deulund Alexandria.
Title: Re: favorite bypass caps
Post by: BobM on January 26, 2014, 04:13:18 PM
I am using a small Alexandra as a bypass to the transistors in my amp. right on the center pin. they are very natural and just give the amp that extra little sparkle but in a relaxed way.
Title: Re: favorite bypass caps
Post by: rollo on February 12, 2014, 08:22:12 AM
What about for power supply caps ? Bill is it a good thing to bypass power supply caps or just change out the cap ?
    Looking to try some Audience Aura T. Or ?? A Solen is in now. Would the Teflon have any advantage ?


charles
Title: Re: favorite bypass caps
Post by: Response Audio on February 12, 2014, 08:36:08 AM
Quote
What about for power supply caps ? Bill is it a good thing to bypass power supply caps or just change out the cap ?
    Looking to try some Audience Aura T. Or ?? A Solen is in now. Would the Teflon have any advantage ?

The power supply caps are electrolytic, then yes, bypass has many advantages. Some will argue about the use of Teflon caps as bypasses on power supply caps but I have found there to be a beneficial difference over inexpensive poly caps.

Just remember that the power supply is every bit as important as any other part of the circuit.
Title: Re: favorite bypass caps
Post by: rollo on February 12, 2014, 08:46:30 AM
Quote
What about for power supply caps ? Bill is it a good thing to bypass power supply caps or just change out the cap ?
    Looking to try some Audience Aura T. Or ?? A Solen is in now. Would the Teflon have any advantage ?

The power supply caps are electrolytic, then yes, bypass has many advantages. Some will argue about the use of Teflon caps as bypasses on power supply caps but I have found there to be a beneficial difference over inexpensive poly caps.

Just remember that the power supply is every bit as important as any other part of the circuit.


  Thanks Bill. Got that right. The power supply IMO is what we really listen to. The better the power supply the better the sound.



charles
Title: Re: favorite bypass caps
Post by: DaveC on February 12, 2014, 09:03:13 AM
Charles, just use Clarity TC caps in your power supply, massive improvement over electrolytics and even better than Mundorf M-Tube Caps.

Title: Re: favorite bypass caps
Post by: rpf on February 12, 2014, 04:15:17 PM


I would like to hear opinions from anyone who has any experience with the Mundorf EVO oil capacitors or the new Deulund Alexandria.


I replaced the stock coupling caps (inexpensive Mundorfs?) in my Rogue Cronus Magnum with the new Evo Silver/Gold/Oil. It made for a nice improvement; with more resolution, dimensionality, and, above all, refinement - the thing that the amp most lacked.

I don't know how they stack up against other caps in their price range but they definitely produce a high quality sound.
Title: Re: favorite bypass caps
Post by: bhobba on February 12, 2014, 04:42:43 PM
If money was no object then by all means a Duelund CAST [ copper] with CAST silver bypass.

Without doubt.

But of course there is the - gulp - cost.

What the Duelund aficionados out our way have found is that the Jupiter Stacked beeswax is reasonably well up there at a fraction of the cost.

Thanks
Bill
Title: Re: favorite bypass caps
Post by: topround on February 12, 2014, 06:08:02 PM
I use Jupiter Copper foil stacked caps in a preamp.
They are prototype caps, which may or may not be available to the public in the not too distant future.
I LOVE them!! If this is what Deuland does then I know why people love the Deuland CAST caps.

I do not bypass them just use them straight

but bypassing can work in certain areas for sure :thumb:
Title: Re: favorite bypass caps
Post by: rpf on February 12, 2014, 06:26:55 PM
I've used the Jupiter stacked beeswax in a couple of different DACs and they transformed the gear: very impressive at a not ridiculous price.

I've heard about the new Jupiter copper foil caps under development and can't wait to try them.
Title: Re: favorite bypass caps
Post by: topround on February 12, 2014, 06:39:00 PM
I hope chris can make the new copper caps "happen"
they are awesome sounding...everything the aluminum does but"more"
and more of all the good :thumb:
Title: Re: favorite bypass caps
Post by: BobM on February 13, 2014, 04:49:21 AM
I've heard the new Jupiter caps will be ready for sale this month (February), but does anyone know where they can be purchased?

Partsconnexion perhaps?
Title: Re: favorite bypass caps
Post by: Response Audio on February 13, 2014, 07:39:06 AM
What about Dynamicaps? Anyone have experience with these? I find they offer warmth and body of an oil cap with more detail and air.
Title: Re: favorite bypass caps
Post by: Nick77 on February 28, 2015, 06:09:54 AM
I've heard the new Jupiter caps will be ready for sale this month (February), but does anyone know where they can be purchased?

Partsconnexion perhaps?


SoniCraft has the new Jupiter and last day on sale. :)

http://www.soniccraft.com/index.php/jupiter-copper-c-301_38_416