Hi fellas
could anyone tell me that is there any difference in these two amps???
between this 400W amp:
and this 250W amp:
http://www.free-circuit.com/300-watt-mosfet-real-hi-fi-power-amplifier/
is there noticeable difference between the power of these two amp because I already built that 250W amp and I like to build the 400W amp because I want more power and more windows shaking (this amp as sub amp)
my sub RMS power is 400W and maximum power is 1200W
could anyone tell me that is there any difference in these two amps???
between this 400W amp:
An externally hosted image should be here but it was not working when we last tested it.
and this 250W amp:
http://www.free-circuit.com/300-watt-mosfet-real-hi-fi-power-amplifier/
is there noticeable difference between the power of these two amp because I already built that 250W amp and I like to build the 400W amp because I want more power and more windows shaking (this amp as sub amp)
my sub RMS power is 400W and maximum power is 1200W
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That's a nice amp but far, far away from 250W. With PS of +/-55V and only 2 pairs of k1058/j162 you can have about 100W RMS at 8Ohms speaker and a bit more at 4 Ohms.
OTOH, HV23 by Apex will do what is says.
)
While correct, it's very misleading when discussing ( music) practical use. The 400 watt amp will have better dynamics and control ( all parameters being equal). Typically he will be using between 20-40 watts RMS for standard Din, the bigger amp will allow double the volume ( 10dB ) right up to 40 watts rms, much better dynamically with no compression vs the 250 watter, representing more than a 2 db difference when playing music.
Regards,
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Hi badcompany2all,
The RAS300 is my design published around 1989 on my bulletin board at the time (before internet) and later on my web site. The schematic is based on the Hitachi app note at the time when L-MOSFETs became popular. That particular circuit and PCB layout was hi-jacked from my site some years ago. The the 300 is a number which means nothing, I give numbers to my designs, what you read into it is your business.
It is a very nice sounding amp and my later RAS-ELD and some other commercial amps that actually licensed it is based on that circuit with some refinements. Yeah, Goldmund could be a close clone, maybe they also hi-jacked the circuit.
It is good for about 250 watt peak into 8 ohms with 55VDC rails and and 300 watt peak into 4 Ohms with 42 watt rails. Even the text was badly copied on that site.
If you like the rest of the information e-mail me and I will send it to you.
Regards
Nico
The RAS300 is my design published around 1989 on my bulletin board at the time (before internet) and later on my web site. The schematic is based on the Hitachi app note at the time when L-MOSFETs became popular. That particular circuit and PCB layout was hi-jacked from my site some years ago. The the 300 is a number which means nothing, I give numbers to my designs, what you read into it is your business.
It is a very nice sounding amp and my later RAS-ELD and some other commercial amps that actually licensed it is based on that circuit with some refinements. Yeah, Goldmund could be a close clone, maybe they also hi-jacked the circuit.
It is good for about 250 watt peak into 8 ohms with 55VDC rails and and 300 watt peak into 4 Ohms with 42 watt rails. Even the text was badly copied on that site.
If you like the rest of the information e-mail me and I will send it to you.
Regards
Nico
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