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 Kriesler 11-77
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 Return to top of page · Post #: 76 · Written at 9:46:35 PM on 29 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

Thanks heaps for the help Smile

I am waiting on those .0022 and .0047 caps (for both my Krieslers!) so it is great to know that not only am I finally replacing something I need to but that it could fix this issue too!

Listening to the 11-77 tonight its amazing (crackle aside) that it does sound pretty good with only two 8 inch speakers. The 11-97 has 6 speakers and although it sounds better the difference isn't quite as much as i'd have expected!


 
 Return to top of page · Post #: 77 · Written at 12:03:07 AM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

When you say 6 speakers do you mean six separate drivers or a six inch pair, and you don't mean 6x9s ?
Mine originally had a Rola 6x9 pair, and both voice coils were fine, but both cones were cactus.


 
 Return to top of page · Post #: 78 · Written at 12:04:58 AM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

Ps, if you ever have the chassis out, and it looks like you're going to, would you mind posting a good pic (the side with the knobs and tuning dial)?


 
 Return to top of page · Post #: 79 · Written at 8:32:30 AM on 30 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

Hi Art, yes the 11-97 has two 12 inch speakers, two 6 x 4 inch speakers and two tweeters!! Very well equipped I presume it was a high end model back then! Didn't seem to have heaps of bass as you know so I have added a subby and its a perfect combination now!

Which chassis would you like a pic of? I actually have a few on my phone of both I think although not sure how many capture the whole chassis.


 
 Return to top of page · Post #: 80 · Written at 12:08:04 PM on 30 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

Hi again I have uploaded some photos of both chassis'.

Monochrome are you able to tell me if the silver heat shield stuck on the side of the cabinet you can see in the first pic is asbestos? It doesn't seem to be but I remember you mentioning it could have a sheet of it under the lid somewhere.

11-77

http://s1306.photobucket.com/user/maccaz69/media/photo7_zpsde717a95.jpg.html.

http://s1306.photobucket.com/user/maccaz69/media/photo6_zpsadfcd02c.jpg.html.

11-97

http://s1306.photobucket.com/user/maccaz69/media/photo2_zps62d9fd9f.jpg.html.

One other thing - the cream/tan capacitors to the right of the transformer (.1uF) which appear different to all the electros, do they have to be replaced too? I have replaced all the other grey electros but not these.


 
 Return to top of page · Post #: 81 · Written at 12:49:51 PM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

0.1 μF is likely a wax cap, and they might as well go,
it's not expensive to replace those lower values.
You wouldn't want some imbalance between the two stereo
channels to be caused by some 35 cent cap!

Thanks for the pics, I just wanted to see if they were similar.

You can wrap your image links in IMG tags if you want to dodge sending pics to Brad:

Image Link


 
 Return to top of page · Post #: 82 · Written at 1:18:43 PM on 30 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

Ah cool thanks I didn't know exactly what it was! Is it non polar?

True for 35 cents why wouldn't I change it!

Working on them you can definately see the similarities between them although they are also quite different chassis.

How do you do that with the link?


 
 Return to top of page · Post #: 83 · Written at 1:40:40 PM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

The one that's in there might be polarised, but the one you replace it with won't be, so long as you got that value right you just posted, 0.1 μF, the replacement would be something like a metal film (yellow) axial, and much smaller.
Usually about 630 Volts.

If I type the tags properly, the forum software will qualify it so:

opensquarebracketIMGclosesquarebracketLINKopensquarebracket/IMGclosesquarebracket
it will annoy some people to click on a link, but better than copy/paste to your address bar to see a pic.

So post a pic of the cap if you're uncertain, whenever you get time.


 
 Return to top of page · Post #: 84 · Written at 2:51:32 PM on 30 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

This is the cap....I have replaced all the paper (well nearly) and the electros but didn't know what these were.....I have circled it in red!

Image Link


 
 Return to top of page · Post #: 85 · Written at 3:16:34 PM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

See how components resistors/caps are in pairs around the pair of output valves?
I would try to be sure they are within spec, at least testing
them against each other... since it's not difficult to do while you are working on it.

I don't know what type they are, might be an early polyester or metal film which might be fine, but there are many suitable replacements
Image Link
yours for 0.1μF would have a three digit code 104, and would also be 630 Volt.


 
 Return to top of page · Post #: 86 · Written at 3:17:41 PM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

μF μF UF

Nice trick Brad


 
 Return to top of page · Post #: 87 · Written at 3:35:46 PM on 30 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

Yes basically each output is a mirror of the other!

Cool i'll just replace them I think.

Are these ok for the job do you think?

Image Link


 
 Return to top of page · Post #: 88 · Written at 3:56:39 PM on 30 January 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

Yes, they are dearer than metal film, just that the yellow metal film are axial.. "cylindrical" like the original ones.
Just easier to work with, otherwise fine.
Thos Jaycar ones could be dark brown, or deep green,
beige, or a terracotta colour, but are all the same.
Jaycar fall short when it gets to high voltage electrolytics.


 
 Return to top of page · Post #: 89 · Written at 4:24:38 PM on 30 January 2014.
Monaro's Gravatar
 Location: Brisbane, QLD
 Member since 24 October 2013
 Member #: 1439
 Postcount: 131

Yes they are easier to work with but I work right near a Jaycar shop so its just more convenient to get them there (If I asked a couple of days ago I could have ordered from Evatco where I got my .0022 and .0047 (they sent next day too!).

Jaycar do have quite a limited range too - I had to use a few in parallel to get the required capacitance in some instances.


 
 Return to top of page · Post #: 90 · Written at 5:43:44 PM on 30 January 2014.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

μF μF UF

Nice trick Brad


Yes conversions of some units of measurement are in the site's spellchecker. Others like ohms are expressed when one types as per the following example:-

4.7k[ohm] = 4.7kΩ


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
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