Guys
There are possibly 15,000+ posts devoted to the F5 and Turbo, I simply haven't the time to go through them all.
Does anyone have any definitive measurements please ? Especially power into 8 & 4 ohms and pulsed power into 2 & 1 ohms ?
The 2012 pdf says with modification you can get 38A into 0.1 ohm, way more than I need !
But even measurements of a standard F5 would be good. I can't find a copy of the Audio Express either ?
Thanks
Dave
There are possibly 15,000+ posts devoted to the F5 and Turbo, I simply haven't the time to go through them all.
Does anyone have any definitive measurements please ? Especially power into 8 & 4 ohms and pulsed power into 2 & 1 ohms ?
The 2012 pdf says with modification you can get 38A into 0.1 ohm, way more than I need !
But even measurements of a standard F5 would be good. I can't find a copy of the Audio Express either ?
Thanks
Dave
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Thanks, I had seen that but it doesn't answer all my questions. Has anyone here built one and measured it as above ?
Thanks
Dave
Thanks
Dave
The F5t is an infinite range of implementations.
We cannot give you an infinite range of maximum output currents, nor output voltages, nor loads, nor supplies.
We cannot give you an infinite range of maximum output currents, nor output voltages, nor loads, nor supplies.
how about rephrasing the question, and perhaps telling us what your application for the amp may be?
As AndrewT said, you can make the F5T suit many different variations of power requirements, its just a matter of implementation. This is a DIY project, and you can tune the outcome to your liking within restraints.
As AndrewT said, you can make the F5T suit many different variations of power requirements, its just a matter of implementation. This is a DIY project, and you can tune the outcome to your liking within restraints.
One can not exceed the SOA of the output devices.
That's the place to start.
Armed with this information you can determine how many devices of what type using what rail voltages and what bias point are required to produce what power into a given load.
As far as measuring distortion, that is another question.
Perhaps you might ask that one if ur interested.
_-_-bear
That's the place to start.
Armed with this information you can determine how many devices of what type using what rail voltages and what bias point are required to produce what power into a given load.
As far as measuring distortion, that is another question.
Perhaps you might ask that one if ur interested.
_-_-bear
Well chaps, my question is quite short and clear as above.
Am I seriously to believe no one has ever measured this on any F5 amplifier ?
Dave
I would like the answer to my question please ? But if no one can provide it, I'll move on as I can see some friction developing here.
Dave
If you like, when you visit RMAF, you can come to my place and measure it yourself. I don't have a F5T currently built, (That chassis has a BA-3 installed) but I do have a standard F5.
A great offer Jim and thank you. I just can't get a good flight, so unless something changes by Tuesday night UK time, I'm going to be here.
In a few weeks, no hurry, perhaps you could have a look for me please ?
Thanks
Dave
In a few weeks, no hurry, perhaps you could have a look for me please ?
Thanks
Dave
Dave,
There are distortion graphs on p.15 and 16 of the F5 manual:
http://firstwatt.com/pdf/prod_f5_man.pdf
For a standard F5 at 1KHz, it looks about 25W into 8R, 40W into 4R and
50W into 2R.
There are distortion graphs on p.15 and 16 of the F5 manual:
http://firstwatt.com/pdf/prod_f5_man.pdf
For a standard F5 at 1KHz, it looks about 25W into 8R, 40W into 4R and
50W into 2R.
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