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SaSi Senior Contributor 200+
Joined: 24 Aug 2008 Posts: 256
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Posted: Mon Feb 18, 2013 9:37 pm Post subject: |
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Have you checked that you get output from the tweeters? The "boxiness" is sometimes a result of lack of highs and it could be either blown tweeters or drifted caps reducing the highs output. |
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Richie Senior Contributor 100+
Joined: 06 Nov 2010 Posts: 108 Location: Northamptonshire
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Posted: Mon Feb 25, 2013 11:55 am Post subject: |
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As far as I can hear the tweeters seem fine.
Does anybody know if the Clarity caps are a similar size (physically) to the originals?
I put Solens in my 104ab’s and they are fine but I doubt they would fit in the mid box of the 105's....
Also the little rubber grommets on the bolts on the mid boxes, I presume they're there to de-couple but would they not be better removed altogether? _________________ Still learning ...... |
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speakerguru Über Contributor 1000+
Joined: 18 Nov 2005 Posts: 1192 Location: Green Hut, Tovil
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Posted: Mon Feb 25, 2013 5:31 pm Post subject: |
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Richie wrote: | ...Also the little rubber grommets on the bolts on the mid boxes, I presume they're there to de-couple but would they not be better removed altogether? |
Only if you want to maximise the excitation of any remaining box panel resonances. |
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rx7rotary Intermediate Contributor 50+
Joined: 20 Feb 2012 Posts: 59
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Posted: Tue Feb 26, 2013 8:53 pm Post subject: |
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Richie wrote: | As far as I can hear the tweeters seem fine.
Does anybody know if the Clarity caps are a similar size (physically) to the originals?
I put Solens in my 104ab’s and they are fine but I doubt they would fit in the mid box of the 105's....
Also the little rubber grommets on the bolts on the mid boxes, I presume they're there to de-couple but would they not be better removed altogether? |
Just so you get some Idea, these images will be off Clarity Cap esa 250 I am using on my xover:
http://audiomarkoni.wordpress.com/
Cheers
Marko |
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Richie Senior Contributor 100+
Joined: 06 Nov 2010 Posts: 108 Location: Northamptonshire
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Posted: Wed Feb 27, 2013 6:23 pm Post subject: |
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SG those grommets on mine are serioulsy flattened out.....
rx7 did you use a mixture of Elcaps and Clarity's ?
Also I notice you have a single hole on the bass bins (for the shaft ?) was that original as I have two......also another hole in the bottom panel, does yours ?
Thanks _________________ Still learning ...... |
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rx7rotary Intermediate Contributor 50+
Joined: 20 Feb 2012 Posts: 59
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Posted: Wed Feb 27, 2013 9:48 pm Post subject: |
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Richie wrote: | SG those grommets on mine are serioulsy flattened out.....
rx7 did you use a mixture of Elcaps and Clarity's ?
Also I notice you have a single hole on the bass bins (for the shaft ?) was that original as I have two......also another hole in the bottom panel, does yours ?
Thanks |
Hi , yes, I used elcaps only in the bass section, everything else is clarity cap esa 250.
I didnt like the holes in the cabinet so I sealed them off and have only got one shaft where the heads sit, but thats sealed off too.
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audiolabtower VIP Contributor 500+
Joined: 06 Jan 2009 Posts: 686
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Posted: Sat Mar 02, 2013 11:19 pm Post subject: |
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Here is a pic of my Mk 1 crossovers, which I recapped over 30 years ago now. They sit in a heavy wooden box directly underneath the 6 power amp channels connected directly to the drivers. In those days I had access to some pro equipment so I measured the original caps and made up replacements to 0.1% of the (close) mean of the originals between channels. The power resistors in the middle board are set on test to replace the DF of alcaps because of the polyprops used.
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rx7rotary Intermediate Contributor 50+
Joined: 20 Feb 2012 Posts: 59
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Posted: Sun Mar 03, 2013 3:36 am Post subject: |
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lovely work audiolab
Here is my finished xover:
Mark |
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audiolabtower VIP Contributor 500+
Joined: 06 Jan 2009 Posts: 686
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Posted: Sun Mar 03, 2013 1:05 pm Post subject: |
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Hi, now that, like mine, will DEFINITELY not fit back in the original space! |
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rx7rotary Intermediate Contributor 50+
Joined: 20 Feb 2012 Posts: 59
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Posted: Sun Mar 03, 2013 7:46 pm Post subject: |
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audiolabtower wrote: | Hi, now that, like mine, will DEFINITELY not fit back in the original space! |
Hahaha, thats why they are called 105's on steroids
I have more pics here:
http://audiomarkoni.wordpress.com/ |
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Richie Senior Contributor 100+
Joined: 06 Nov 2010 Posts: 108 Location: Northamptonshire
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Posted: Sun Mar 03, 2013 9:10 pm Post subject: |
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My goodness, the katie Price's of the capacitor world......
Do you just leave them hanging out the back like that ?
great pics guys _________________ Still learning ...... |
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rx7rotary Intermediate Contributor 50+
Joined: 20 Feb 2012 Posts: 59
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Posted: Sun Mar 03, 2013 9:47 pm Post subject: |
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Richie wrote: | My goodness, the katie Price's of the capacitor world......
Do you just leave them hanging out the back like that ?
great pics guys |
Yes, they are actually quite well tied with cable ties etc. There will be a custom cover for the back, I just need time to fabricate one.
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speakerguru Über Contributor 1000+
Joined: 18 Nov 2005 Posts: 1192 Location: Green Hut, Tovil
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Posted: Mon Mar 04, 2013 3:09 pm Post subject: |
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There is an old science joke about a drunk who is searching for his car keys under a streetlight. A cop happens along, and after appraising the situation, asks the drunk where he had last seen the keys. The drunk points toward a dark alley.
"Then why aren't you looking over there?" asks the exasperated cop. The drunk looks up and replies, "Because the light is better over here." |
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audiolabtower VIP Contributor 500+
Joined: 06 Jan 2009 Posts: 686
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Posted: Tue Mar 05, 2013 11:26 pm Post subject: |
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Looking at your satin black pics (very nice!) I would comment that the foam layer originally on top of the bass cabinet was there to mop up mid range reflections from the head unit minimising interference with the direct sound. I used a very thin piece of U shaped plywood (just enough to accept a small staple) covered with thick black anti static foam, and bass bin grill material stapled over, to slide into the space at the side and front of the head bracket, flush with the veneered bits of cabinet side and back. |
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rx7rotary Intermediate Contributor 50+
Joined: 20 Feb 2012 Posts: 59
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Posted: Wed Mar 06, 2013 2:01 am Post subject: |
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audiolabtower wrote: | Looking at your satin black pics (very nice!) I would comment that the foam layer originally on top of the bass cabinet was there to mop up mid range reflections from the head unit minimising interference with the direct sound. I used a very thin piece of U shaped plywood (just enough to accept a small staple) covered with thick black anti static foam, and bass bin grill material stapled over, to slide into the space at the side and front of the head bracket, flush with the veneered bits of cabinet side and back. |
Absolutelly brilliant idea... would you mind sharing a couple of photos of this, I am very interested. Thanks kindly! m |
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