[Datun Walnut]

thank you triod750

I will also look for Metz... I hope they will be reasonably cheap like this damn LD2 is costing me a lot of money because of the "tube rolling crazyness"...

Tell me about it. This is just a bit of my collection of tubes for the little dot. - not counting my selection of 6SN7GTs both modern and old and the tubes for my other amps, DAC and CD player. It's been fascinating playing with them and hearing the difference and I've modified the amp now so that I can change from Ef95 to ef91 types without taking the case apart. My current favourites are Old CV1988 back line with NOS Mullard EF95 front end. The Metz will have to wait this month.

 

[TrollDragon]

@MIKELAP and I were just reminiscing about a member of this group and his LD amp he modified for better cooling.

bbmiller... I wonder what ever happened to him or if he burnt his house down by running his amp 24/7 because it sounded better when left on.

 

[Datun Walnut]

@MIKELAP and I were just reminiscing about a member of this group and his LD amp he modified for better cooling.

bbmiller... I wonder what ever happened to him or if he burnt his house down by running his amp 24/7 because it sounded better when left on.

Jeeze. Classy bit of work that.
To be fair I have thought about recasing mine. It would allow more room for Mundorf caps and a bigger transformer.

 

[triod750]

You are a true enthusiast when you go all in like that but maybe Mordy's fans were wiser. I don't remember what tubes he used but heat hasn't been a problem for me, so far.

 

[TrollDragon]

Jeeze. Classy bit of work that.
To be fair I have thought about recasing mine. It would allow more room for Mundorf caps and a bigger transformer.

Yes he was an odd duck for sure.
There have been a few in the group that have used bigger cases.

 

[Datun Walnut]

You are a true enthusiast when you go all in like that but maybe Mordy's fans were wiser. I don't remember what tubes he used but heat hasn't been a problem for me, so far.

No, can't say I've had a problem. If I can find a cheap 'spares or repair' one on ebay, I might have a go.

 

[TrollDragon]

You are a true enthusiast when you go all in like that but maybe Mordy's fans were wiser. I don't remember what tubes he used but heat hasn't been a problem for me, so far.

He ran stock tubes.

 

[Datun Walnut]

He ran stock tubes.

I wonder what the rest of his system was like?

 

[TrollDragon]

I wonder what the rest of his system was like?

I forget, but he was a little hard on the head. You can search his old posts, bbmiller was his username.

 

[triod750]

He ran stock tubes.

Stock tubes make the amp hotter than 5687, 6SN7 or 6H12C do. The adapters isolate a lot of the heat from the chassis.

 

[MIKELAP]

@MIKELAP and I were just reminiscing about a member of this group and his LD amp he modified for better cooling.

bbmiller... I wonder what ever happened to him or if he burnt his house down by running his amp 24/7 because it sounded better when left on.

Man what a waste .Better off buying a better Amp .Extreme modding that's for sure

 

[TrollDragon]

Stock tubes make the amp hotter than 5687, 6SN7 or 6H12C do. The adapters isolate a lot of the heat from the chassis.

The problem was he wanted to run his LD 24/7 and we advised him against that. I would never leave a tube amp running unattended.

 

[Datun Walnut]

The problem was he wanted to run his LD 24/7 and we advised him against that. I would never leave a tube amp running unattended.

No. Not a clever thing to do.

 

[lupoal]

...and I've modified the amp now so that I can change from Ef95 to ef91 types without taking the case apart. ...

interesting!
could you post details/picture about this mod? did you also change the capacitors at the output?
... I was thinking to remove the transformer, maybe replacing it with something more audio-grade and more powerful, and put it in an external housing to avoid vibration transmission to the valves, then between the transformer and the mechanics of the LD a cable with a female MIL connector (the green ones) and a male MIL connector on a small plate to close the hole in the housing of the LD... but it is just another crazy thought (well... not so crazy, it is a solution you can find in many high quality dac and ampli, for example Estro Armonico https://www.ilgazeboaudiofilo.com/t27363-ampli-estroarmonico-otl-signature )

 

[Datun Walnut]

interesting!
could you post details/picture about this mod? did you also change the capacitors at the output?
... I was thinking to remove the transformer, maybe replacing it with something more audio-grade and more powerful, and put it in an external housing to avoid vibration transmission to the valves, then between the transformer and the mechanics of the LD a cable with a female MIL connector (the green ones) and a male MIL connector on a small plate to close the hole in the housing of the LD... but it is just another crazy thought (well... not so crazy, it is a solution you can find in many high quality dac and ampli, for example Estro Armonico https://www.ilgazeboaudiofilo.com/t27363-ampli-estroarmonico-otl-signature )

No, it's not crazy. The LDs are great amps and would respond well to modding. I didn't want to drill the case at all on my mod. So I removed one of the audio out RCAs and fitted a dpdt switch (locking type to avoid dusting accidents) in its place. I then ran wires with little push fit connectors back to the jumper positions on the PCB. Some people have experienced hum doing this but my machine is silent. I'd like to change the caps to better but space is an issue. My favourite budget caps are Russian PIOs bypassed with a low value polystyrene. I've used them on my CD mod and highs sparkle. Sadly, I'd never find space for them in an LD.