Acoustat caps - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Planars & Exotics ESL's, planars, and alternative technologies

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
Thread Tools Search this Thread
Old 16th January 2011, 03:59 PM   #1
diyAudio Member
Join Date: Jan 2011
Default Acoustat caps

I recently got a new amp (class D , Nuforce ia7 v2 ) sounds great with my old acoustat spectra 1100 speakers.
I have one question, to do with replacing the 20 year old filter.

I have found Siemens epcos MKV 100 uF capacitators, (from ebay germany) and have been told this is so much better than the tiny paper based cap in the speakers.

I am about to replace them but there seems to be a bypass next to
the offending article (see picture)
Would it be safe to remove the bypass?, as the new cap must not be bypassed.
  Reply With Quote
Old 16th January 2011, 08:52 PM   #2
diyAudio Member
Join Date: Jan 2011
Location: Burgundy, france
Hi Barmy

If i'm right the 100F capacitor is connected in paralled with the 10F one (the yellow one). Then both are part of the High pass-filter. you can change the chemical 100F against another type (polypropylen...) without any risk. You might have sound advantage in the bass-middle frequency area.

  Reply With Quote
Old 16th January 2011, 09:56 PM   #3
expert in tautology
diyAudio Member
bear's Avatar
Join Date: Apr 2002
Location: New York State USA
Definitely change the electrolytic to polypropylene if you can. Mylar (polyester) is second best.

However, if you are not listening for "sound stage" (the stereo presentation) you will not hear much of a difference, as it does not appear so much as frequency response as it does spatial placement in the very upper mids, lower highs...

There is no reason not to have a bypass cap, unless the bypass cap is lower in quality than the main cap. One of the purposes of using a smaller value bypass cap is that it will improve the way the larger cap works at higher frequencies. For example, if you use some paralleled polypropylene caps to get to the 100ufd value, there could be value in bypassing them with a 1ufd to 10ufd value polypropylene or maybe even a "teflon" cap... otoh I have found the polypropylenes to be a quite substantial improvement to the point that a bypass is not of real value...

_-_-bear -- Btw, I don't actually know anything, FYI -- every once in a while I say something that makes sense... ]
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
changing acoustat 3 Williams Audio Planars & Exotics 2 2nd May 2010 04:18 PM
acoustat X interface. elmir2m Planars & Exotics 1 9th December 2005 08:34 PM
acoustat diaphragm Williams Audio Planars & Exotics 4 4th October 2005 06:54 AM
Acoustat ESLs - What Next? G-Daddy Planars & Exotics 12 11th November 2004 02:52 AM
More Acoustat questions The Peasant Planars & Exotics 12 12th July 2004 06:38 AM

New To Site? Need Help?

All times are GMT. The time now is 08:43 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2