I build this amplifier
Kind time of day by all!
Apologize for English - composed by the program interpreter.
I am going to build this amplifier and at me to a question me of a column on 6 îì, theoretically this amplifier 300W of target capacity - me can not is necessary so much. I would like to limit to its feed approximately up to 100 face values and 200 peak.
How it is better for making?
Kind time of day by all!
Apologize for English - composed by the program interpreter.
I am going to build this amplifier and at me to a question me of a column on 6 îì, theoretically this amplifier 300W of target capacity - me can not is necessary so much. I would like to limit to its feed approximately up to 100 face values and 200 peak.
How it is better for making?
Hi, Uli,
Nice works you have. But I'm confused. Which design is for me? There is X-amp, XA1-V2, XA1-V3 and your desing in "back engineered" thread. I'm looking for class AB (less heat), but good sounding.
In the XA1-V3, you didnt use CCS for the lower part of 9620 (only using 1k6+910R), like you use in x-amp (IRF620). In the "back engineered " design there are so many pots to adjust.
Is it possible to eliminate the 100R source resistor, replace with 1 CCS (like zen ver 7)? This will give tighter signal coupling like alephx. How to make this idea with minimal number of adjusting pots?
Nice works you have. But I'm confused. Which design is for me? There is X-amp, XA1-V2, XA1-V3 and your desing in "back engineered" thread. I'm looking for class AB (less heat), but good sounding.
In the XA1-V3, you didnt use CCS for the lower part of 9620 (only using 1k6+910R), like you use in x-amp (IRF620). In the "back engineered " design there are so many pots to adjust.
Is it possible to eliminate the 100R source resistor, replace with 1 CCS (like zen ver 7)? This will give tighter signal coupling like alephx. How to make this idea with minimal number of adjusting pots?
Back to civilisation
Hi folks,
I hope I´m back again to the civilized world
Had lots of trouble getting my evening university loving
me again.
So, the X-Amp is the class AB highpower thingy.
PSU: I recommend a toroid of about 2x25 - 2x28 V
and every single Ampère you can get (at least 2x 12A for one
channel) plus CRC 4 times 47mF and 2x0R22.
The drivervoltage you can do by bootstrapping the powerPSU
or with a second tiny supply.
Lastly I am sorry, I cannot supply Gerberfiles.
I own a university full version of Ultiboard without Gerber
Uli
Hi folks,
I hope I´m back again to the civilized world
Had lots of trouble getting my evening university loving
me again.
So, the X-Amp is the class AB highpower thingy.
PSU: I recommend a toroid of about 2x25 - 2x28 V
and every single Ampère you can get (at least 2x 12A for one
channel) plus CRC 4 times 47mF and 2x0R22.
The drivervoltage you can do by bootstrapping the powerPSU
or with a second tiny supply.
Lastly I am sorry, I cannot supply Gerberfiles.
I own a university full version of Ultiboard without Gerber
Uli
I know this thread has been dormant for a while, but I had a question.
The scale reads 24%, which gives me an odd number when I calculate it. It makes more sense if the file board size normalized to 8" x 12", is that right? It seems kind of big, most of the places I have looked at for pre-sensitized boards carry 8" x 10". Where do you get the boards to etch?
Thanks,
Peanut
The scale reads 24%, which gives me an odd number when I calculate it. It makes more sense if the file board size normalized to 8" x 12", is that right? It seems kind of big, most of the places I have looked at for pre-sensitized boards carry 8" x 10". Where do you get the boards to etch?
Thanks,
Peanut
2 flaws
Be careful, the layout in the first postings has 2 design flaws:
1)missing connection betwwen drain of Q21 and the join of
R51 (trimmer - wiper) and R65
2)missing connection between drain of Q7 and +node of C7
These connections can easily be made with normal hookup wire.
I am very sorry for that, but I simply forgot to mention this, as I
did not redesign the pcbs, mine are corrected with wire too!
Uli
Be careful, the layout in the first postings has 2 design flaws:1)
missing connection betwwen drain of Q21 and the join of R51 (trimmer - wiper) and R65
2)
missing connection between drain of Q7 and +node of C7These connections can easily be made with normal hookup wire.
I am very sorry for that, but I simply forgot to mention this, as I
did not redesign the pcbs, mine are corrected with wire too!
Uli
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