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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Re: To add bypass or to swap out cap in crossover ? posted by SteveLim on December 28, 2004 at 23:13:08:
I understand you want to do it right the first time. However I have bad news. Others can only provide indicative rules of thumbs and general approaches.I've spent many months changing the crossover caps and have learnt one simple rule: Your own ears are the ultimate judge!
As you use better caps, you will come up with new problems (e.g. clipping or harshness in new frequency+sould level combinations). Only you can be the final judge. All rules of thumbs are indicative and not representative of the sonic clues your like, the end-to-end frequency characteristics of your equipment nor the sensitivity and likings of your ears (e.g., some people like clipping in certain high frequencies as "presence")
One specific way is to listen to many different pieces to see if a particular frequency range is always "buzzing" or "bring" or "present". If yes, it has clipping in that particular range and has to be fixed (unless you like it). Fix it with better(faster) caps than you have put in, usually smaller in capacity and higher in voltage, in bypass mode. Don't feel uncomfortable about caps with voltage ratings of 630V or well above (e.g. 1000, 1600, 2000).
Don't doubt the value of putting in anything smaller than 0.01 uf. Try that and ask your own ears !!!
There is a very well established theory in this forum that using more than one caps is ultimately not as good. This might be true if the alternative of having one PERFECT cap is available below heaven. In case you are still a mortal soul, the option of using bypasses will be good. However, if you hear clipping or segmentations (some ranges good, some bad, in between harsh) that means you have to add more good small caps to close the caps in between. When you have PROPERLY filled the obvious gaps, the value of bypassing with MANY caps cannot be underrated. HOWEVER, if you have NOT closed those gaps, the abovementioned theory will be very true because incomplete bypassing will CERTAINLY create incomplete (bad) results. SO it take time and patience and many retries. (For example, I've literally experimented with more than 100 times and still trying / improving)
The good thing about this is that you can "change speakers" a few times every night without even changing their placement !
Good luck
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Follow Ups
- Ask your ears - E 02:40:29 12/29/04 (3)
- You seriously claim it causes "clipping" ?? - clifff 10:17:13 12/29/04 (2)
- You have misread it - E 03:21:23 12/30/04 (1)
- Not misread - just on a different planet to you. - clifff 05:43:07 12/30/04 (0)