vt 25 how hot can you run them?

Tube DIY Asylum

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Hi ppl I am playing around with a small stereo amp I have built first with 6b4g .Now with vt25 .I am running them at ~460 on the plate instead of the rated 425.I can not get the B+ lower (with out adding a resister) even better sound then I expected.Enough to tempt me to buy a decent output trans for them and leave them there. No bass with the 10k tap on the hammond 125 ese outputs.But lovely midrange. 2k2 load resister .Maybe a few ma over the 18 recomended.But these are maximum ratings for the early type 10 too. These have larger plates then the globe tens I have and maybe are good for higher ratings..I am using 7f7(6sl7)doubled up for driver.I am all so wondering if changing this may give it more bass too.
Anyone know more about this?
Regards Amnesiac

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Topic - vt 25 how hot can you run them? - amnesiac 08:10:24 07/14/06 (8)

Re: vt 25 how hot can you run them? - drlowmu 15:40:10 07/17/06 (0)

change power supply to choke input? - Ed Sawyer 18:22:56 07/16/06 (0)

Re: vt 25 how hot can you run them? - JimL 15:04:22 07/15/06 (0)

Re: vt 25 how hot can you run them? - arnoldc 19:56:05 07/14/06 (2)

Re: vt 25 how hot can you run them? - amnesiac 00:33:24 07/15/06 (1)

Type 50... - arnoldc 16:22:44 07/16/06 (0)

Re: vt 25 how hot can you run them? - amnesiac 10:58:49 07/14/06 (1)

Re: vt 25 how hot can you run them? - glenz 19:01:39 07/14/06 (0)

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