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5687 Line Board Coupling Capacitor Value?

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Hi All,
Is there anyone out there may have experimented with different values of 5687 line board coupling caps (C5, C6) in L3-Pre-Amp? If so, I would be grateful if you could share your experience and what value you have ended up with.
I am wondering if increasing the value (to say .15uF or .22) could improve bass response? If so, are there any trade off that could be expected?
Thanks,
Ike

Edits: 10/06/12

Follow Ups:

RE: 5687 Line Board Coupling Capacitor Value? - GTCharlie 02:02:35 10/09/12 (2)
the larger the capacitance of a coupling cap, the better the bass response. AT THE SAME TIME, the greater the "smear" What is the value of the grid resistor in the following stage?

a "convenient" formula is 1,600,000 divided by the product of the grid resistor and the lowest frequency you'd wish to have.

and then listen. the ears remain the best judge.
- RE: 5687 Line Board Coupling Capacitor Value? - IkeH 14:07:23 10/09/12 (1)
  Thanks GTCharlie,
  
  Grid Resistor is 1M so, 0.1uF (value specified by the Kit) should be enough to go down lower than 20Hz...
  
  I have a fairly large speaker with 95db efficiency (driven by Kit One) so I am not sure why bass lacks authority.
  
  Ike
  - RE: 5687 Line Board Coupling Capacitor Value? - GTCharlie 16:04:04 10/09/12 (0)
    "tuning" an amp takes some study, and a few weekends. heheheh
    
    you might want to post schema of your DAC and amp at the tube diy or SET fora. the guys there are very handy with soldering irons, scopes and dmms
RE: 5687 Line Board Coupling Capacitor Value? - horny 03:24:02 10/07/12 (7)
hello Ike
I try AN copper and AN silver 0,1 uf
and i am very happy with the silver one's
i think these are the best caps on the world!
i have one pair AN silver laying around here from another project
if someone is interested ?
- RE: 5687 Line Board Coupling Capacitor Value? - Vincin 09:57:08 10/22/12 (0)
  Hi, I'm interested in the caps. Are they still available. Pls send me email. Vi
- RE: 5687 Line Board Coupling Capacitor Value? - Nounours18200 12:56:21 10/07/12 (5)
  I have replaced the original AN copper foil caps by the Aura-Teflon 0.1uF 600V.
  They are the best investment that I have done !! That's true.
  - RE: 5687 Line Board Coupling Capacitor Value? - horny 10:14:49 10/08/12 (4)
    i dont now the aura caps
    but i tried Vcaps teflon and the sound was unmusicaly and not in balance
    also with the russian teflon caps i think i dont like teflon.
    - RE: 5687 Line Board Coupling Capacitor Value? - Mark V. 15:00:00 10/18/12 (1)
      Horny said: but i tried Vcaps teflon and the sound was unmusicaly and not in balance
      
      This is exactly what I have experienced with the V-Cap CuTF! Unmusical! I let them play for LONG time, but didn't like them at all as coupling caps in the 5687 line stage. After that I tried the Duelund VSF-Cu DC caps and I couldn't be happier. As detailed as the V-Caps, but I got the "musicality" back. As good as it gets in my opinion. I didn't try silver, but I tend to don't like silver anywhere in the signal path...
      
      Edits: 10/18/12
      - RE: 5687 Line Board Coupling Capacitor Value? - IkeH 05:00:28 10/21/12 (0)
        
        In Reply to: RE: 5687 Line Board Coupling Capacitor Value? posted by Mark V. on October 18, 2012 at 15:00:00
        
        Thank you everyone for your input. So far, I've tried AN Ag, VCap CuTF in my L3 pre. I have also tried An Cu and Sonicap Platinum on the 5687 board of DAC 3.1 Sig.
        
        So far, I like CuTF but there are times I find the sound to be "too neutral" like distilled water as opposed to good mineral water. I guess, I might as well go all the way, bite the bullet and try Duelund VSF Cu DC ;)
        
        Ike
    - RE: 5687 Line Board Coupling Capacitor Value? - Nounours18200 11:01:28 10/08/12 (1)
      The Russian Teflon caps do not have a good reputation, so I understand this.
      The V-cap do require a long burn-in period: it is mandatory and the sound is not balanced when not burned in.
      Be also aware that different models of V-cap exist and do not sound the same: the original (i.e the first model) is the best in my opinion.
      The Aura-T (be aware that Aura also manufactures non teflon caps) are the best in my opinion.
      The teflon caps must not be used in every place of a circuuit: they have a sonic signature (like every cap) and too many teflon caps can be too much...
      
      If you do not like teflon caps, a frien of mine has installed the audionote Silver caps and his feedback is more than very positive...
      All the best,
      - RE: 5687 Line Board Coupling Capacitor Value? - horny 22:34:46 10/08/12 (0)
        
        In Reply to: RE: 5687 Line Board Coupling Capacitor Value? posted by Nounours18200 on October 08, 2012 at 11:01:28
        
        Yes AN silver caps that are the caps i like and that is what i use now.

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