But wouldn't the Zen-Lite be better for growing pot? Lets see
the more bias on the Zen-lite the more light, more light the better the pot will grow, the better the pot grows the better the music will sound.
the more bias on the Zen-lite the more light, more light the better the pot will grow, the better the pot grows the better the music will sound.
Zen Mod said:
............ 'till short circ between headphones .............
Settle in
😀 that could take a while...
7/10
That's good to know. Those Plitrons are $90 a pop.
Nice to keep costs down these days. 😀
...I know, I know. Even if I needed 2, it would be worth it. 😉
Thanks!
V~
bogdan_borko said:
damn that's beautiful. I can't tell if the caps are optional? Am I seeing that correct? It both looks like they are, and they aren't.
-Jared
defect9 said:
C3 and C4 are 470uF power supply caps ( bypassed with 100nF C1 and C2) and of course they`re optional...
Assesears said:
It depends of how many of you are interested and what`s mr.Pass thinks of that idea, it`s his design after all.
I'm sure he prefers everyone to party for months on end with hummer and peaking perf board layouts.
Well, posting this after Borkos superb PCBs 
will make me ridiculous at the face of the whole DIY community... 
As an exercice, I tried to copy - shame on me - Admirable Nelson's FW PCB and I am not very satisfied with the result.
Especially the connection between Q5 and input Jfet seems less than convincing on my layout, but my weeny brain cannot find a better way.
Any Idea ...?
Or should I best give up?
Manu
will make me ridiculous at the face of the whole DIY community... As an exercice, I tried to copy - shame on me - Admirable Nelson's FW PCB and I am not very satisfied with the result.
Especially the connection between Q5 and input Jfet seems less than convincing on my layout, but my weeny brain cannot find a better way.
Any Idea ...?
Or should I best give up?
Manu
bogdan_borko said:
Perhaps we should send someone to Serbia to snatch Jelina ..to be held for ransom...specifically availability of those beautiful PCBs. 😉
NICE JOB!! Such talent!!(and sooo young).
" and what's mr. Pass thinks of that idea".....
Manu said:Well, posting this after Borkos superb PCBs
As an exercice, I tried to copy - shame on me - Admirable Nelson's FW PCB and I am not very satisfied with the result.
Especially the connection between Q5 and input Jfet seems less than convincing on my layout, but my weeny brain cannot find a better way.
Any Idea ...?
Or should I best give up?
Manu
I like them
YGFM
jacco vermeulen said:
Jacco that was very cruel of you
😀 Few days ago I`ve seen one of mine beginner`s post and I`ve blushed 😀
My english is a bit better now, I hope but more important I made a good progress in audio electronics, made my Aleph variation "Krypton": http://www.diyaudio.com/forums/showthread.php?s=&threadid=109097&highlight=
and I`m now deep in developing my low feedback class a hybrid amplifier and I`m happy abou it 😎
Cheers!
Borko.
> but if I need more power , how do I do ?
If you consider the dissipation on each MOSFET, they are at 24V 1.3A bias -> about 30W. I would not advise you to go beyond that. So more power always means more MOSFETs.
The maximum output is designed at about 20V 2.6A, i.e. optimised for 8ohm load.
If you have a high impedance speaker, you need more drive voltage. Probably easiest is to drive 2x F5 as bridged amps feeding one speaker using balanced input. Maximum power is now optimised for 16 ohm load.
If you have a low impedance speaker, you need more current rather than voltage. You can of course start paralleling matched output devices (e.g. using 2 pairs of MOSFETs will give maximum power at 4 ohm). But paralleling MOSFETs will change the frequency dependent characteristics of the amplifier.
Patrick
If you consider the dissipation on each MOSFET, they are at 24V 1.3A bias -> about 30W. I would not advise you to go beyond that. So more power always means more MOSFETs.
The maximum output is designed at about 20V 2.6A, i.e. optimised for 8ohm load.
If you have a high impedance speaker, you need more drive voltage. Probably easiest is to drive 2x F5 as bridged amps feeding one speaker using balanced input. Maximum power is now optimised for 16 ohm load.
If you have a low impedance speaker, you need more current rather than voltage. You can of course start paralleling matched output devices (e.g. using 2 pairs of MOSFETs will give maximum power at 4 ohm). But paralleling MOSFETs will change the frequency dependent characteristics of the amplifier.
Patrick