Happy to know you liked what was the first of the motives behind designing the two amps - better bass. Thanks for sharing the info.
Happy to know you liked what was the first of the motives behind designing the two amps - better bass. Thanks for sharing the info.
Thank you for sharing these great amps!
Hi Shaan !
I'm ready now to start populating my V4H boards (not the V4H Rev1), as I didn't have much time until now to work on this project.
I choose the Exicon option I got from Profusion.
My question is about the Revision 1 Mod option: should I do it or not ? Did you actually hear of people having problems with Exicons ?
Thanks for all
JM
I'm ready now to start populating my V4H boards (not the V4H Rev1), as I didn't have much time until now to work on this project.
I choose the Exicon option I got from Profusion.
My question is about the Revision 1 Mod option: should I do it or not ? Did you actually hear of people having problems with Exicons ?
Thanks for all
JM
Hi JM.
You can install the rev1 mod with exicons without any problem. The drain-gate capacitors will now define the mosfets' Cgd and will be almost equal and constant in both polarities when rev1 mod is installed, resulting into better stability. So go ahead.
You mean just keep the R27 through R30 t 100ohm resistors,
don't add the 6 47pF/500V and I'll be fine ?
No need to fear for unlikely problem ?
JM
Those capacitors do not downgrade the performance in any way how I understood and improves stability of the amp why do you want to avoid them?
You get some silver mica quality caps for a couple of Euros and less headache at startup.
Especially if you are not set up with scope to do some measure if there is any oscillation. Of course, if you have a scope and you can measure it that is a different cup of tea.
I use Exicon mosfets, they are very well matched but I still use those caps recommended by Shaan.
All do I did not power my amp yet, I amp planning to do so the next couple weeks.
Those capacitors do not downgrade the performance in any way how I understood and improves stability of the amp why do you want to avoid them?
You get some silver mica quality caps for a couple of Euros and less headache at startup.
Especially if you are not set up with scope to do some measure if there is any oscillation. Of course, if you have a scope and you can measure it that is a different cup of tea.
I use Exicon mosfets, they are very well matched but I still use those caps recommended by Shaan.
All do I did not power my amp yet, I amp planning to do so the next couple weeks.
OK, I'll do that mod. I do have a good osilloscope, but you never know what could trigger a bad event in the future, better be on the safe side.
Thanks a lot
JM
Will exicons be stable without the mod? Probably.
Will exicons be stable with the mod? Definitely.
Install the whole mod, not part of it.
p.s. the resistors are lower value because the caps were installed. basically, the caps slightly slow down the amp, the resistors slightly speed up the amp. complementary action.
If you have access to de-soldering station, you can take the transformers easily.
In that case I will send you two free transformers with the voltage you need.
You pay shipping.
Hope that helps
Wow that's a generous offer! Thanks!!!
I'll consider that option.
I guess your offer answers my previous question and implies that 61V is too much...
Those are identical without any difference, except the manufacturer.
And they are good to go..
Thought so, but searchin' around different threads confused me mentioning some behavior differences and problems... Thanks!
Thought so, but searchin' around different threads confused me mentioning some behavior differences and problems... Thanks!
Yes, that's true, specially when you are using the chines ones, I think you will not face issues when using the one from ONSEMI
