Originally Posted by mordy
Congrats to your super modded amp! Wish I could make these mods, but unless the adapters were available commercially I doubt that I'll get there since I don't think I could make them myself. Hopefully one of the Chinese adapter makers will pick up on your neat idea of having the heater wires coming out of the adapter socket!
Meanwhile I have gone the other direction re the size of the tubes and now I am using three sub miniature tubes; two as power tubes and one as driver. Surprisingly, this combination works well with a balanced and lively presentation. The treble is excellent and the bass is quite strong and I don't have the feeling that it is running out of steam. These tubes do not have the ultimate grip on the lowest frequencies of a bass drum with the bass control turned up fully, but overall very pleasant and engaging to listen to. Look, for $7 worth of tubes this is a true bargain!
Raytheon Jan 6832 Submini dual Triode
Hi mordy. Thanks. But hey, it's not too difficult to alter the 6Cg7 adapter to take the 6AS7/6080 as power tube. With the MKIV, and no extender necessary once all the brass bits are removed, it just needs pins 4 and 5 cut with enough left to solder the new power supply wires, then covered with tape. I found that worked perfectly (obviously they mustn't project too far out!). If socket extenders are needed (I'm assuming they are available for 8-pin to LD's 9-pin?), the wires could be wedged in atop the extender and its pins 4 and 5 at the LD cut off completely.
Well, so I think anyway, mordy...
Originally Posted by Rossliew
Great ! Looks like another round of fun hunting for tubes
Yo R. That's all part of a tube roller's lot, y'know! And I have to admit I have spent far more than I ever anticipated. But still cheaper than out playing golf (if not so healthy lol!).
Originally Posted by sgbwill2
Thanks I think i will play it safe then and get the c3g's
You will not be disappointed, mon ami. And with the Siemens NOS 'S' versions going for about $70 on ebay, I don't think you will find a better deal...the (20V) C3m seems to have now jumped up in price and certainly is not worth bothering with at current prices.
Happy hunting and rolling...
And finally I know you must all be getting fed up with my ravings, but after a few hours' burn-in of my new adapter, the two 6AS7Gs are forcing me to write that I cannot OVERstate the difference they are making. The shift to another level is at least equal to the C3gS phenomenon... Do I now have a MK9? Hey, even that doesn't have the C3g! This MKIV SE is now a TOTALLY different animal to even a few months ago, when we were a good way on from original stock. All the trials - not to mention tribulations (and expense!) - have been worth the journey. Not to mention the wonderful camaraderie along the way, with some great guys.
So whichever direction you take, mes amis, I can only hope you experience the sense of wonderment and sheer joy I am currently enjoying...way beyond my expectations.
HAPPY ROLLING EVERYONE