Thanks Mono, if you have a schematic, would you mind shooting it over?
I never did have, or really need one, but this is my bench amp now, so it would be handy.
Or a link to the site where this one was obtained?

Monaro, that's very nice, I wouldn't have done to that one what I did to mine.
... well maybe, because I'm not into vinyl discs, but you catch my drift ;)

Kev has it.

http://www.kevinchant.com/uploads/7/1/0/8/7108231/11-88.pdf.

Thanks

Just opened up the lid and while I don't think I have the dirty big sheet of asbestos (I have a big sheet of tin) there is a fiborous bit of material stuck to the lid on top of the dial globe which looks very suspect and very frayed.....may have to take lid off and carefully remove it incase.

The speaker transformers are marked k9-5 but don't have any markings on them re impedance. I then looked at my 11-97 and it clearly has the 15 ohm on it......

They don't look too hard to replace - are they the only thing i'm likely to blow with the wrong speakers? Or could they cause the preceeding circuits to draw too much current too if overworked?

I just ran it for 10 minutes with all valves etc still in place and power trans gets warm but not hot so hopefully there was only an intermittent issue but I think it prudent to find a replacement all the same.....I couldn't cope with the risk of it burning down the house if I turned my back for a minute! Also far as I can see there is no fuse on these Krieslers....any recommendations?

Glad you got your schematic Art can't believe you could work it all out without it!

Oh just saw my pics are up too thanks!!!

I only worked out how to strip the radio out, it didn't require fixing,
only recapping, and the phono input works fine for a digital source.

There are better qualified than me to advise about the speaker compatibility,
but at best, I figure it's reduced output.

Maybe the asbestos could be sprayed with something.
It never occurred to me it would have been an ideal material
at the time.
Don't risk messing with that if you can help it, it's more important than the console.

You can fuse the console yourself, before and after the power transformer.. the cheat way.. just use the lowest value fuse that does not regularly blow.

That is on my to do list - an ipod input. My 11-97 has one and its great. I figure I can easily run an input jack to the phono terminals for R & L channels just under the turntable or alternately to their connections on the chassis is this what you did? As far as I can understand the only difference with doing this compared to the 11-97 is that the 11-97 feeds the input to the preamp after passing through a resistor capacitor circuit (1M resistor parallel to a 220pf cap) whereas the phono input is fed in prior to this circuit (don't ask me what this does!)

I didn't even contemplate asbestos being in these either! Its only a small bit I'll be able to scrape it off easily I think - i'll just make sure its wet.

I'll head to jaycar and pickup a fuse I should have done that when I bought the caps but I forgot.

Maybe a previous owner did you a favour and removed the the asbestos under the lid. Though it was nearly 10 years ago when I last saw a 11-77, I remember a fairly large rectangular sheet of asbestos under the lid. Krieslers from the mid 1950's onwards were notorious for using asbestos, especially around the power transformer.

Large HMV table radios had similar asbestos mats glued in. It is not hard like fibro but is the woven type and easily falls apart if disturbed. Safe removal is the best way to sort the issue out.

Remove the chassis and take the cabinet outside. Put a dust mask on as a precaution. Wet the asbestos quite well. Remove it from the cabinet with a paint scraper or similar tool and double bag it, making sure both bags are sealed tight. Make sure there is none of the material left in the cabinet. Take the stuff to a waste station that accepts asbestos and be sure to declare it. It's an offence to dump it in your household waste or 'fly tip' it somewhere.

Ah thats what is is (or was) its the woven type stuck on. I took off the lid, wet it and it scraped off easily so problem gone!

Wow wish I knew this earlier hopefully this post brings some awareness to others

Does anyone know if theres any asbestos elsewhere or on my Kriesler 11-97? I cant see any traces......and the power transformer looks like its just mounted on the chassis on both although I'm not sure exactly what i'm looking for there. Good old asbestos hey!

The little shield protecting the power transformer from the heat of the 6V4 rectifier could quite possibly be asbestos.
I'm going to at least coat mine. I think that is all for my chassis.

I ditched the filter, since the source is digital, anything other than an iPod will have options to achieve the same thing digitally.
I think the iOS device is lacking in the EQ dept. unless that has changed.

Basically, an off the shelf Jaycar DAC that converts optical to RCA analogue,
and powered that from the same AC supply as the Kriesler,
so that the device connected is optically isolated.
But that's probably extremely careful.

The right audio is gold.
Some modern music with some high pitch jingles can roll off
sharply, and that can be heard, but it doesn't really ruin the music.
I know 6M5 is rare, and can be substituted, but I wasn't game
to change anything, it just sounds so nice.

A solid state subwoofer amp is a pretty good compliment,
it will get down lower than the valve amp will.

This is the earliest ad I can find for the 11-77 on Trove.

The Canberra Times, 15/04/1959

http://trove.nla.gov.au/ndp/del/printArticlePdf/128813196/2?print=n.

Oh ripper thanks for that add its a classic

Yes Art I tried connecting a solid state sub to the speaker terminals on the rear but because the amp doesn't output the low notes the sub barely does anything. I need to connect it to the preamp (the sub I have has both low level and high level inputs and its own power source). I reckon that will give it good sound but I have to decipher the schematic a bit more to find where to connect it!

Yes the Kriesler and a separate powered subwoofer amp,
both receiving source from another device is what I meant.
A lot of the powered sub amps already have the low pass filter.

If you have a stereo source without a mono output for the sub amp,
you can create one with a couple of 10K resistors.
Tie two 10 K resistors together, and you have a 20K resistor.
Tie that between the signal of the left and right RCA,
and the middle of the 20K resistor where you tied together,
that is the input for the sub amp without having messed the stereo.

Ah I see what you mean.

I was hoping to use an rca lead to "tap in" to the Kriesler unit itself - was thinking of one of the record player channels (radio doesn't really require the bass).

Do you think that would work or would it be way too low a voltage to operate the sub? I think the output of a ceramic cartridge is around .5volt so it may be way too weak a signal and it could mess up that channel.

If I tapped into one channel after the preamp the bass would already be lost wouldn't it?