|
No experience with that particular amp. I also don't have a schematic of that amp but a few general remarks. When considering a power tube substitution, the following points should be considered:
- the new power tube should not require substantially more heater current than the stock one (stock EL 34 1.5A, new 6V6 0.45A - check)
- the new power tube should not be operated above the rated maximum plate voltage. Since we don't know what the plate voltage in that amp is, I would only consider the JJ 6V6 as a potential substitute. It can handle up to 500V plate voltage, and it is unlikely that the Stiletto Ace runs that high - this should be checked however.
- the new power tube should not be operated above the maximum power dissipation (EL34 = 25W, 6V6 = 14W. This means that the bias voltage must be checked. This is a bit tricky in an amp like any Mesa Boogie that does not have adjustable bias.
In summary, it could be done if it is done properly by a competent tech.
I have a 100W Marshall which I modified myself. I once tried a quartet of JJ 6V6s in that amp. This worked fine. Sonic difference at volume settings below power amp compression/clipping was less bass compared to the EL34 - is that what you want?
If what you want is power amp compression/clipping at a lower volume, an attentuator would be the better solution.
Cheers Stephan
|
Login
Register
FAQ
Search
