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Kef 105 (105.1)
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SaSi
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PostPosted: Mon Feb 18, 2013 9:37 pm    Post subject: Reply with quote

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
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PostPosted: Mon Feb 25, 2013 11:55 am    Post subject: Reply with quote

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 104abís 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?
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speakerguru
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PostPosted: Mon Feb 25, 2013 5:31 pm    Post subject: Reply with quote

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
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PostPosted: Tue Feb 26, 2013 8:53 pm    Post subject: Reply with quote

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 104abís 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
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PostPosted: Wed Feb 27, 2013 6:23 pm    Post subject: Reply with quote

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
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rx7rotary
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PostPosted: Wed Feb 27, 2013 9:48 pm    Post subject: Reply with quote

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.

Smile
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audiolabtower
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PostPosted: Sat Mar 02, 2013 11:19 pm    Post subject: Reply with quote

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
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PostPosted: Sun Mar 03, 2013 3:36 am    Post subject: Reply with quote

lovely work audiolab

Here is my finished xover:




Mark
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audiolabtower
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PostPosted: Sun Mar 03, 2013 1:05 pm    Post subject: Reply with quote

Hi, now that, like mine, will DEFINITELY not fit back in the original space! Very Happy
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rx7rotary
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PostPosted: Sun Mar 03, 2013 7:46 pm    Post subject: Reply with quote

audiolabtower wrote:
Hi, now that, like mine, will DEFINITELY not fit back in the original space! Very Happy


Hahaha, thats why they are called 105's on steroids Smile

I have more pics here:
http://audiomarkoni.wordpress.com/
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Richie
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PostPosted: Sun Mar 03, 2013 9:10 pm    Post subject: Reply with quote

My goodness, the katie Price's of the capacitor world......

Do you just leave them hanging out the back like that ?

great pics guys Very Happy
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rx7rotary
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PostPosted: Sun Mar 03, 2013 9:47 pm    Post subject: Reply with quote

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 Very Happy


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
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PostPosted: Mon Mar 04, 2013 3:09 pm    Post subject: Reply with quote

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
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PostPosted: Tue Mar 05, 2013 11:26 pm    Post subject: Reply with quote

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
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PostPosted: Wed Mar 06, 2013 2:01 am    Post subject: Reply with quote

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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