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Trying to get A 6KM8 valve which is a sharp cut off triple anode tetrode used for audio frequency division and possibly audio mixing, cannot find if there is a UK ot European equivalent.

Found a recipe in old late 1800's publication a while back and decided to give it a try as my  contribution to my family Christmas get together. The original article read To make wine jellies such as claret, sherry or port wine use 1oz gelatine to one bottle of cheap wine and three quarter lb...

This is an enquiry to see if any forum members have made use of this very useful valve in either normal single ended pentode or wired as a triode. Same size as the EL84 but with different pinouts and anode dissipation of 8W.compared to the EL84 which is 12W. A pair of them will put out just over...

Looking at present day valve technology as such it would not be at its perfection today without help along with the way in some instances without assistance from the semiconductor industry. Just think of silicon diodes compared with what we had to put up with in the days of the large cumbersome...

I have just been donated a Panasonic SA-PM08 DVD home theatre system setup and told it is not working no other details provided as to what the problem is. The remote and manual not provided but has the front left, right and centre speakers that I have checked out as OK. My first thoughts are...

Hi,this is directed mainly to valve enthusiasts here who have those pristine amplifiers and equipment to listen to and enjoy. How many of you some eye candy displays of some of those fantastic valves of the 20's and 30's to add to the overall appearance,  be working valves or just defunct items...

Are there out on the forum any members who have built, planning to build or have knowledge of an output transformerless valve audio power amplifier using those big power double triodes such as the 6336. I believe Julius Futterman designed such an amplifier some years back but have been unable to...

Something that has puzzled me for a long time is the trend these days to have valve amplifiers all polished up in full view. Does it affect the quality of the sound at all? Can anyone with Golden Ears hear any difference? Yes it can affect the valve operation when the valves are exposed to the...

Not sure if this potential problem has appeared on the forum previously, it can be more prevalent on toroidal transformers which seem to becoming a bit more popular these days with the massive big amplifiers and the transformers almost the size of an Austin Mini tyre. Depending on the severity...

I have just been donated some items that have been retired by the previous owner and were in working condition when last used, they  are:- Two Technics SL-PG3 compact disc players. Philips DVD player model DVP3310K AIM  DVD player ADVD3A All four of them were used for audio only, I realise some...

Colloidal Silver as a natural antibiotic, I  know  this is a controversial subject as the drug companies are dead against it as they cannot patent a natural occurring substance and screw the public with their exorbitant prices. The health shops do sell it also at very high prices for a half...

Not sure if this is the correct place to post this, does anyone know if any recordings are available in South Africa of the Australian Mezzo-soprano Helen Shermam?  ( married name Dodd) If so, who has them for sale?

So the stupid policy of the Swedish government to permit rubbish into the country as "refugees" has now ended with a [mod: refugee] mowing down innocent people in the street with a vehicle. My condolences to the families of the murdered victims and a speedy recovery of the injured.

Have forum members ever given thought of what effect the presence di-Hydrogen Monoxide contamination has on the quality of sound produced by audio equipment and if some of the forum members can hear the difference when it is present?  (do not confuse this chemical with Hydrogen Peroxide which in...

So nice to see this category opened up, when I joined the forum last year I noted there was a dearth in anything relating to recording. My interest in sound recording predates my knowledge that tape recording even existed. Saw a wire recorder belonging to a friends father when I was about 10...

I am sure all of us receive phone calls and SMS's trying to sell us some item or so called service, such as "approved bank loans" from a Mr Hares Trousers, insurance, music to download of someone I have never heard of, sort of one man one note type of music and what have your,  sometimes  even...

I hope someone has an answer to a problem with my Samsung 10.1 that comes up from time to time,  mainly involving photos in have taken with this device. Shortly after taking a photo and  other times days afterwards when calling up the picture I find it has disappeared only a blank black...

I don't know if this particular subject has been raised before, if it has I apologise for any repetition For those of us who started messing about with valves and radios etc before sand came into the entire field of electronics will not have a problem. For newcomers into valve technology and...

How collectable are the old 12 inch single sided records dating from about the time of WW 1 and for that matter also the records whose speed were 80 rpm instead of the 78 rpm standard. Anyone got any idea what year or years the 80 rpm records were marketed?

Ever since WorldSpace went belly up, and all the various channels disappeared one by one the receiver which previously was never switched off, has now been gathering dust for too long. Has anyone out there come up with any ideas as to put it into some use. Those folks who own models that also...