Mundorf EVO's in the crossover...

[earwaxxer]

Count me as impressed! I bought a couple of these on a whim from Partsxpress. $50 for the pair delivered for 10uf. I got the aluminum/oils. I pulled the AmpOhm paper/oils and secured them in. It was a little disconcerting at first. The AmpOhms must be 20x the size! Its shocking how compact the EVO's are. I'm listening to them now, after about 10hrs on the clock

I like to put my parts in nude. No burn in. I want to hear it all. Warts and all. They sounded quite good from the get go. A bit rolled off in the highs at first. Very nice mids compared to the AmpOhms! Recognized that right away. I also had the AmpOhms bypassed with a Mundorf silver/oil, that improved the sound by cleaning up the highs and tightening things up a bit. The EVO's, so far, do not benefit from the same bypass. Very interesting. What I liked about the AmpOhms was the large staging. EVO's have all that and more. Nice timber, not harsh. A very good example of an oil IMO.

 

[johnsonad]

Keep us posted as they awake. My Jupiter's are in the burn in machine. 100 hours was not near enough.

 

[earwaxxer]

Curious as to you impression after 100hrs... Please do tell!

 

[johnsonad]

Interesting. Good tone, veiled, didn't image well, not there yet. Enough so I emailed the company. I'm going to treat them like Tefleons and out another 300 hours on them before listening again. They have potential for sure!

 

[earwaxxer]

Interesting! - thanks!

 

[earwaxxer]

That might be the difference between your tube power amp stage and my SS. Just a thought. You might be better with something closer to a teflon or silver/gold/oil. Again, just a thought....

 

[johnsonad]

BeePre we are talking here.  Not sure how to compare it. I don't want anything brighter for sure! Horns can be painful!

 

[earwaxxer]

So, they were a tad on the bright side? Interesting. I got the opposite.

Like you say though, the horns can kick your ass. I had some SpeakerLab horns based speakers that I built in the 70's. Concert level sound for sure if you wanted it. I put them in my dorm room windows on the 15th floor and cranked them with a 200wpc SAE behind them. Serious concert sound. Someone told me they were in town miles away and heard them. Of course I was reprimanded by the campus authorities. Back then you could get away with that stuff... "good old days".

 

[Paul Joppa]

Just a note in this thread - I have seen more often than not caps which sound OK at first, then get worse after some 10 hours of music, then get good again after 30-50 hours.

From a technical perspective, it seems plausible that the speed of break in will depend on the signal level (volts? amps? Something else?) so any attempt at assigning hours to the effect is likely doomed to failure. We already know that the materials have different behavior. So the numbers above are likely meaningless.

 

[johnsonad]

Yes Paul but it gives you a point of reference and that's all I'm aiming for when I put the numbers up there. With the small signal level of the BeePre I expect for the cap to take a little longer than say if it were in a Parafeed position. 

 

[Grainger49]

  .  .  .    I also had the AmpOhms bypassed with a Mundorf silver/oil, that improved the sound by cleaning up the highs and tightening things up a bit.

So to get a 1:1 comparison you need the Silver/Oil bypassing the Al/Oil.

Or are you saying you tried it and didn't like during the "dreaded break-in period?"

And HEY!  Do you guys not know about my patented painless break-in method? 

 

[earwaxxer]

Yep, the S/O bypass had no noticeable affect on the AL/O. Unlike the P/O

 

[Chris]

"I like to put my parts in nude. No burn in. I want to hear it all. Warts and all'...... damn , we love it when you talk dirty.....

 

[Grainger49]

Yep, the S/O bypass had no noticeable affect on the AL/O. Unlike the P/O

Maybe after break-in?

 

[earwaxxer]

That's quite possible Grange - my impression without breakin is that the highs are a bit "rolled off". It's possible that they will open up and the bypass will be more noticeable.