Aleph J cascoded three incarnations

[Mikerodrig27]

You are not crazy. My Email for post 51 is in English and the forum was in Italian.

 

[Zen Mod]

now I'm even more confused

#51 is tonimxp's post

 

[Mikerodrig27]

😱 ... 😆

 

[tonimxp]

Hi!
Just for my information...
If 1200r is ok for ac gain 50% @ 8 Ohm
wich is the rispective resistor
value for ac gain 50% @ 4 Ohm?

 

[Zen Mod]

think .................... it'll be the same whatever load is

difference is - what Aleph AC gain you(r brain) prefer with 8R, and what with 4R load, taking in account that with change of AC gain, there is change of THD

 

[gaborbela]

View attachment 1163684

Zen Mod
Is there is a major difference sound wise between (this 60W type) and your high power Babel Fish version?
If not that much could I use your PCB to build this amp?
60W would be more than enough for me.
Please let me know.
Thank you!
Greetings

 

[Zen Mod]

on which "my high power Babel Fish version" you're thinking?

 

[gaborbela]

Thanks for your fast reply!
I will post your PCB layout.
This one with multiple output mosfets..

 

[Zen Mod]

yeah, pretty close

 

[gaborbela]

Thank you Zen.

 

[gsrchrisu]

So Type 2 is basically the same as the DIYaudio store version. Type 1 calls for irfp150 which eliminates the need for matching? Can you use infineon brand or do they need to be vishay?

 

[Zen Mod]

Type 2?

Type 1?

 

[gsrchrisu]

Type 1,2,3 wiring diagram from post 1. Do mosfets need to be Vishay and do they need to be matched?

 

[Zen Mod]

no necessity for Vishays

where you see one pair per channel - no matching

if two pairs per channels, you need matched pairs, one per rail

no need for matched quartet

 

[kentmay]

What is the function of JP1? What is the difference between short circuit and open circuit?
If jp1 is open circuit, can it work well?