900W Class H PRO Power Amplifier.
Hi all!
This is not my first amp, but it's a first two-rail amp in my series called "Nataly".
Specs:
Nominal power - more that 900W, 4Ohms
THD on all frequency response - less 0,03%
THD on 1kHz - less 0,005%
This amplifier was made and discussed on Russian forum: V.2013 Äâóõýòàæíûé PRO-óñèëèòåëü â êëàññå Í
Project homepage (in Russian language) - ????????? ???????? Nataly - ????? ?? ????????????????
With respect from Russia
Vadim Mogilniy.
My nick on Russian Sound forums - Waso.
Hi all!
This is not my first amp, but it's a first two-rail amp in my series called "Nataly".
Specs:
Nominal power - more that 900W, 4Ohms
THD on all frequency response - less 0,03%
THD on 1kHz - less 0,005%
This amplifier was made and discussed on Russian forum: V.2013 Äâóõýòàæíûé PRO-óñèëèòåëü â êëàññå Í
Project homepage (in Russian language) - ????????? ???????? Nataly - ????? ?? ????????????????
With respect from Russia
Vadim Mogilniy.
My nick on Russian Sound forums - Waso.
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More photos...
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That isn't truth,from my point of view it's a very interesting project!
If you want to share all files like pcb, construction details e.t.c, i'm sure it is useful to some guys.🙂
Ok.
Last edited versions of files. PCBs are made for single-sided material.
Russian opto-pair AOP124 may be changed with VTL5C2, VTL5C3 with difference of pins. Russian transistor KT815 may be changed with BD139, 2SA1837, ets...
Last edited versions of files. PCBs are made for single-sided material.
Russian opto-pair AOP124 may be changed with VTL5C2, VTL5C3 with difference of pins. Russian transistor KT815 may be changed with BD139, 2SA1837, ets...
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Andrew hi!
You interested about full limiter as soon as or limiter as amplifier part?
I have some ideas about it, with LM13700, prototype PCB is in my hands 🙂 But now I finish a third dual-level amplifier in H-class. It is more important.
PS. Is there any progress with the your construction of the my Yamaha-D7000 clone amplifier?
PPS. G-class amplifier was tested too, it has a nicely sound as H-class, because class G is free from power switching interferences. Both devices leave no chances of many similar devices on the sound. If you choose OpAmp OPA2132\2134 instead NE5532, sound will be even better. Same thing for replacement OPA134UA to the OPA827, OPA1641, OPA132.
You interested about full limiter as soon as or limiter as amplifier part?
I have some ideas about it, with LM13700, prototype PCB is in my hands 🙂 But now I finish a third dual-level amplifier in H-class. It is more important.
PS. Is there any progress with the your construction of the my Yamaha-D7000 clone amplifier?
PPS. G-class amplifier was tested too, it has a nicely sound as H-class, because class G is free from power switching interferences. Both devices leave no chances of many similar devices on the sound. If you choose OpAmp OPA2132\2134 instead NE5532, sound will be even better. Same thing for replacement OPA134UA to the OPA827, OPA1641, OPA132.
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Hi Waso
greetings thanks for replying LM13700 is ok i need to keep input signal to about 1 volt rms i could try it Yamaha d7000 i have not tried as most of my time goes teaching
my daughter mathematics this is her board examination year
warm regards
Andrew
greetings thanks for replying LM13700 is ok i need to keep input signal to about 1 volt rms i could try it Yamaha d7000 i have not tried as most of my time goes teaching
my daughter mathematics this is her board examination year
warm regards
Andrew
If you need a stable RMS level, you need a limiter based on true-RMS detector, for example, http://www.thatcorp.com/datashts/2252data.pdf Main part in compressor is a level detector, my scheme is a peak-level compressor.
I think that quite without SMD unrealistic. Surely in online stores are not sold? There is nothing deficient. I brazed components 0805 and SOIC8 manually, without using of special devices such as hot air gun.
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not a problem in the installation , but the electronic components of the SMD type is not sold in my place .