Hi Juma,
Thanks a lot for the great bjt cascode version implementation of the PASS BAF2013 LSK preamp.
I came up with an idea and hope that you do not mind my using photoshop to merge several of your schematics of LSK Preamp, F5 meets Buzquito and addition of 2x150R at (R23 & R24) for an integrated with no global NFB. Any comments or suggestions for a build with sk/sj pair at idss about 10ma?
Thanks in advance.
Was this setup ever tested or simulated?
It should be a killer amplifier?
Mosfet buffer output
No negative feedback
Jfet imput gain stage
Maybe slightly low damping factor
Kind of a Ba3 preamp on steroids?
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Not recommended because it doesn't sound nice?
Is there a final version of this Amp with laterals PP buffer?
Perhaps you could consider Cubie2 instead? It is absolutely brilliant little amp.
Hi Juma I need some info about 2 preamps you designed
firs is one of the first BJT version of the LSK pre, as I understood it is a cascode
LSK pre - BAF 2013
the second is a version in preamp ideas for F5 tread post 53
Preamp ideas for F5
it is similar, with negative feedback but output BJTs are not cascoding? they are amplifying? it is more like an F5?
Does the first have lower output impedance?
Which one sounds best?
firs is one of the first BJT version of the LSK pre, as I understood it is a cascode
LSK pre - BAF 2013
the second is a version in preamp ideas for F5 tread post 53
Preamp ideas for F5
it is similar, with negative feedback but output BJTs are not cascoding? they are amplifying? it is more like an F5?
Does the first have lower output impedance?
Which one sounds best?
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I really would like to avoid the complexity of #485 because of various reasons (time, transistor matching etc)
Therefore I would like to stay on the 4 transistor configuration, maybe just adding the LM317 or JFET CCS on the input stage.
Would you then advise to use the first or second topology I just posted?
Therefore I would like to stay on the 4 transistor configuration, maybe just adding the LM317 or JFET CCS on the input stage.
Would you then advise to use the first or second topology I just posted?
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