Crossover bypass capacitors do really matters ?

diypass · 24th April 2012, 09:15 PM

what are your opinions ?
thank you

dlp4341 · 25th April 2012, 03:00 AM

diypass
The following is from AK

02-12-2012, 02:07 PM
dlp4341
AK Member

Join Date: Jun 2005
Location: CHICAGO Sub.North
Posts: 193
Qwin

I did a test to see if I could hear any difference with or w/out Vershay 0.01 bypass caps. I wanted a fair test , so I used the same speaker and XOver and used relays to add or delete the 0.01 caps. This way I could AB switch the caps in / out and eliminate most of the extraineus variables. We ( an EE and long time HiFi nut, a Musican and I) listened to varous CDs an could NOT hear a difference.
In retrospect the XO we used had all new to one year old caps from PE.
Some were 1% Daytons, others Solons. Most were actually made up two caps to get the desired value. Eg 7.27=6.8+0.47. So is the smaller 0.47 cap acting as a bypass? Or are Daytons and Solons so good they dont need bypassing?

You maybe interested in the time delay issues with coaxiel speakers.

http://web.me.com/donaldpatten

DavidL · 25th April 2012, 03:13 AM

Quote:

Originally Posted by diypass

what are your opinions ?
thank you

Opinions about THAT subject will probably end up covering about 10 to 20 pages of posts on here before it finally fizzles out.
MY opinion is that they aren't needed as long as the capacitor being used meets its specifications as to capacitance, has low enough ESR and is rated at a high enough voltage. Some like electrolytics, others prefer film caps (mylar/polypropelyne) of moderately more price while others only use the very pricey boutique caps.
Being as how film caps are not that pricey and very stable over time and temperature I use those.
If you do feel better using a bypass cap, then by all means do so, making sure the combined caps meet your design goals. It won't hurt anything if you do.

Inductor · 26th April 2012, 12:25 AM

Quote:

Originally Posted by diypass

what are your opinions ?
thank you

My guess is you can do it. Post your results if testing.

JBL - Bypassed Capacitors & Biased capacitors
Bypassed and Biased Capacitors

jcx · 26th April 2012, 01:43 AM

you could try puting some # on the table

capacitor bypassing/cascading......

irext · 28th April 2012, 04:36 AM

I recently built a pair of Joe Rasmussens Elsinore's and used Solen SCR caps for the HF filter series pass element. I listened to them for about 5 months then changed to Jantzen Superior Z caps. The difference was remarkable. Much greater detail and subtlety. I didn't think the difference would be very great or even audible at all but I was somewhat gob smacked. I have always been very sceptical of bold claims made by esoteric manufacturers but in this instance they were right on the money. Well worth the expense. (About $12 Aus ea)

24th April 2012, 09:15 PM	#1
diypass diyAudio Member Join Date: Apr 2012	Crossover bypass capacitors do really matters ? what are your opinions ? thank you

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Bypass capacitors in cd players	210	Digital Source	18	29th January 2011 07:48 PM
Bypass capacitors on diodes?	wwenze	Power Supplies	7	5th December 2008 12:23 AM
bypass capacitors	jitter	Digital Line Level	2	23rd November 2008 08:21 AM
Bypass Capacitors	noodle_snacks	Multi-Way	37	27th October 2006 01:41 AM
bypass capacitors sourcing	omni	Parts	0	16th July 2006 04:52 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

25th April 2012, 03:00 AM	#2
dlp4341 diyAudio Member Join Date: Mar 2010 Location: Chicago suburban	diypass The following is from AK 02-12-2012, 02:07 PM dlp4341 AK Member Join Date: Jun 2005 Location: CHICAGO Sub.North Posts: 193 Qwin I did a test to see if I could hear any difference with or w/out Vershay 0.01 bypass caps. I wanted a fair test , so I used the same speaker and XOver and used relays to add or delete the 0.01 caps. This way I could AB switch the caps in / out and eliminate most of the extraineus variables. We ( an EE and long time HiFi nut, a Musican and I) listened to varous CDs an could NOT hear a difference. In retrospect the XO we used had all new to one year old caps from PE. Some were 1% Daytons, others Solons. Most were actually made up two caps to get the desired value. Eg 7.27=6.8+0.47. So is the smaller 0.47 cap acting as a bypass? Or are Daytons and Solons so good they dont need bypassing? You maybe interested in the time delay issues with coaxiel speakers. http://web.me.com/donaldpatten

26th April 2012, 01:43 AM	#5
jcx diyAudio Member Join Date: Feb 2003 Location: ..	you could try puting some # on the table capacitor bypassing/cascading......

28th April 2012, 04:36 AM	#6
irext diyAudio Member Join Date: Jul 2011 Location: Melbourne	I recently built a pair of Joe Rasmussens Elsinore's and used Solen SCR caps for the HF filter series pass element. I listened to them for about 5 months then changed to Jantzen Superior Z caps. The difference was remarkable. Much greater detail and subtlety. I didn't think the difference would be very great or even audible at all but I was somewhat gob smacked. I have always been very sceptical of bold claims made by esoteric manufacturers but in this instance they were right on the money. Well worth the expense. (About $12 Aus ea)