Hi Terry.
I didn't have a chance to hook it to a speaker yet. If they're anything like the rest of the VHex amps they will sound amazing.
Did you want to do a pair of these the easy way? I can send you a couple boards.
I didn't have a chance to hook it to a speaker yet. If they're anything like the rest of the VHex amps they will sound amazing.
Did you want to do a pair of these the easy way? I can send you a couple boards.
Hi Terry, did you have a chance to go through the spectrums post #378? Is it of any help? Or completely useless? 🙄
agree. Thank you Valery
Hi Valery,
I did read through it. I understand some of it. I will keep after it until I it gets clearer. Thanks.
I've done a little more testing on the VHex+CP amp. Great running and great sounding as always! it has a very slight turn on thump, but noise free otherwise. Here's some scope shots.
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Jeff, very cool, including excellent clean clipping. No artifacts.
Looks like the oscilloscope has got some negative DC offset - all the diagrams are below the center line 😉
Looks like the oscilloscope has got some negative DC offset - all the diagrams are below the center line 😉
Can you please drop the final schematic here - as I remember, you have adjusted the resistor in CCS.
Here's the "As Built" schematic. I had to change R10 to 569R in the CCS to lower VAS current and changed the Bias pot to 200R to allow a wider adjustment range.
Hi,
i still follow, stumble behind. 🙂
Thanks for advise Valery- i have tested a bit the many options you have to
create pattern- diptrace is very comfortable, but makes smoking my head to
find something out- if you found its clear- it's fun but needs much time for me,
will go on. 😀
Nice job Jeff- you presenting a finally working Son. 😛
i still follow, stumble behind. 🙂
Thanks for advise Valery- i have tested a bit the many options you have to
create pattern- diptrace is very comfortable, but makes smoking my head to
find something out- if you found its clear- it's fun but needs much time for me,
will go on. 😀
Nice job Jeff- you presenting a finally working Son. 😛
Constant Power approach in the front-end
VHex+CP is an excellent amplifier - simple enough, easy to repeat - with the good parts and no mistakes it will start working from the first power on, minimized memory distortion, low THD / IMD, inexpensive, unconditionally stable, highly reliable, no hum, no hiss - dead silent with no signal, clean soft symmetric clipping. Punchy bass, natural highs.
Many options for input jFETs: 2sk117, 2sk170, 2sk209, 2sk150, BF862.
Initial testing by Thimios, reference build by Jeff, Terry is going to build it as well. Slightly updated front-end from this amp will be used is the high-end ultra-low-distortion monster-monoblocks.
Through-hole and SMD boards available.
If you're looking for an easy-to-build no-problem high-quality amp with around 100W @ 8 ohm power rating - that's the one! 😉
Cheers,
Valery
VHex+CP is an excellent amplifier - simple enough, easy to repeat - with the good parts and no mistakes it will start working from the first power on, minimized memory distortion, low THD / IMD, inexpensive, unconditionally stable, highly reliable, no hum, no hiss - dead silent with no signal, clean soft symmetric clipping. Punchy bass, natural highs.
Many options for input jFETs: 2sk117, 2sk170, 2sk209, 2sk150, BF862.
Initial testing by Thimios, reference build by Jeff, Terry is going to build it as well. Slightly updated front-end from this amp will be used is the high-end ultra-low-distortion monster-monoblocks.
Through-hole and SMD boards available.
If you're looking for an easy-to-build no-problem high-quality amp with around 100W @ 8 ohm power rating - that's the one! 😉
Cheers,
Valery
Hi
My old head is not the fastest....that is problem only i need longer time.
In moment no time- more other things to solve.
My old head is not the fastest....that is problem only i need longer time.
In moment no time- more other things to solve.
That's the reason i will keep on going learn a bit
Does anybody have Multisim models for these transistors?
2SA992
2SC1845
2SA1381
2SC3503
Thank you,
Dan
2SA992
2SC1845
2SA1381
2SC3503
Thank you,
Dan