Bottlehead Amplifier Discussion / Comparison Thread: Crack, SEX & Mainline
Nov 11, 2014 at 7:04 PM Post #916 of 2,108
  My only problem is finding a 600V 0.01uF teflon other than the Auri-Teflons which are like buying a whole other set of the SGOs
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Easy
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http://www.ebay.com/itm/0-01uF-1000V-5-AUDIO-teflon-capacitors-K72P-6-Lot-of-1pcs-/261249464197?pt=LH_DefaultDomain_0&hash=item3cd3ae7785
 
Nov 11, 2014 at 7:30 PM Post #918 of 2,108
  For some reason i can't find the right bypass caps value for my CRACK,I tried 0.01uf,0.56uf  and 1uf for the 0.01 and 0.56uf sound very harsh/fatiguing  1uf tho is not bad but still warm to my liking.
 
Nov 11, 2014 at 7:34 PM Post #919 of 2,108
    For some reason i can't find the right bypass caps value for my CRACK,I tried 0.01uf,0.56uf  and 1uf for the 0.01 and 0.56uf sound very harsh/fatiguing  1uf tho is not bad but still warm to my liking.

 
Normal rule is about 1% of the main cap value. What types of caps are you using as the bypass? Teflon, poly, etc?
 
Nov 11, 2014 at 7:42 PM Post #920 of 2,108
 
    For some reason i can't find the right bypass caps value for my CRACK,I tried 0.01uf,0.56uf  and 1uf for the 0.01 and 0.56uf sound very harsh/fatiguing  1uf tho is not bad but still warm to my liking.

 
Normal rule is about 1% of the main cap value. What types of caps are you using as the bypass? Teflon, poly, etc?

I used SOLEN poly to find the value but it's not working for me.I will try 1.5uf to 2.5uf and see(this will be  a bit over 1%).
 
Nov 11, 2014 at 7:50 PM Post #922 of 2,108
 
  I used SOLEN poly to find the value but it's not working for me.I will try 1.5uf to 2.5uf and see(this will be  a bit over 1%).

 
Roughly 10% is fine, but make sure you allow ample time for burn-in of the caps.

OK Thank You!
I usually used them for a week then on to the next caps that is why i give up.
 
Nov 11, 2014 at 7:58 PM Post #924 of 2,108
  OK Thank You!
I usually used them for a week then on to the next caps that is why i give up.

 
If you do a search on the Bottlehead forum there is some discussion about how to make a burn-in rig for your caps so you can pre-burn them. Basically is involves connecting your capacitors to a source along with a load (resistor) and letting it run for a while. Harshness is a common trait of caps before they're burned in
 
Nov 11, 2014 at 8:00 PM Post #925 of 2,108
 
  OK Thank You!
I usually used them for a week then on to the next caps that is why i give up.

 
If you do a search on the Bottlehead forum there is some discussion about how to make a burn-in rig for your caps so you can pre-burn them. Basically is involves connecting your capacitors to a source along with a load (resistor) and letting it run for a while. Harshness is a common trait of caps before they're burned in

Thanks! i will try that.
 
Nov 12, 2014 at 9:26 AM Post #927 of 2,108
Whoo hoo    
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       congrats, I am jealous already. I had better start saving my pennies!   
 
Going to have to satisfy myself on the building front with some speaker enclosures for the Fostex FX120's drivers I picked up earlier in the year . Hopefully I will make a start before the years out as the Sex is proving to be very engaging with my old bookshelf speakers and find the time I spend listening to the Sex via the speakers on the increase. Hopefully the Fostex FX120 full range drivers will make a further improvement.
 
On the Sex front I have added a couple of FT-3 0,1uF teflons in place of the stock caps and am also really pleased with how the Jantzen bypasses are working out however its still very tempting to try something a little more boutique
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Haha!  It's okay, Jamie.  We will always have the Crack together 
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.   Plus, if you had a Mainline, I certainly could not keep up with you!
 
  Once your Mainline is up and running, I'd love some feedback on how the LCD-3 pairs with it vs. with the DNA Stratus.

 
I plan to contrast the Mainline with the Stratus and the Dynahi with HD800's LCD3 and Code-X HE5's.  I don't need a Mainline, but curiosity got the best of me.  I am really interested to see just how good it really is.  I haven't seen many comparisons of it vs other amps.  I know before I went for the Stratus, the Mainline was a big contender: did I make the right decision?  Especially considering the cost (the Stratus with tubes is pushing $4000).  Only time will tell.
 
Nov 12, 2014 at 10:58 AM Post #928 of 2,108
  I plan to contrast the Mainline with the Stratus and the Dynahi with HD800's LCD3 and Code-X HE5's.  I don't need a Mainline, but curiosity got the best of me.  I am really interested to see just how good it really is.  I haven't seen many comparisons of it vs other amps.  I know before I went for the Stratus, the Mainline was a big contender: did I make the right decision?  Especially considering the cost (the Stratus with tubes is pushing $4000).  Only time will tell.

Please share your thoughts on how the Mainline competes with the Dynahi and DNA. It's gonna be an epic comparison! 
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Nov 12, 2014 at 11:08 AM Post #929 of 2,108
    For some reason i can't find the right bypass caps value for my CRACK,I tried 0.01uf,0.56uf  and 1uf for the 0.01 and 0.56uf sound very harsh/fatiguing  1uf tho is not bad but still warm to my liking.

I'm using these caps for bypassing with great result for my Crack. My output caps are the 100uF ERSE Pulse-X caps.
 
http://www.ebay.co.uk/itm/0-056uF-500V-5-AUDIO-teflon-capacitors-K72P-6-Lot-of-2pcs-/261249457353?pt=LH_DefaultDomain_0&hash=item3cd3ae5cc9
 

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