Masha danki Mr. Pass
Many thanks Mr. Pass
This is papiamentu (my native language) from my very soul
V3 is my amp 😀
Best regards,
Audiofanatic 😎
Many thanks Mr. Pass
This is papiamentu (my native language) from my very soul
V3 is my amp 😀
Best regards,
Audiofanatic 😎
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Agh, noooo!!
Taking apprentices perhaps? I'm also old and slow, but with two of us, we'll be ... twice as slow 😛
Thanks Mr. Pass, Papa - off to the article now!
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Why the change away from the IRF9240/240
Just finished a fast read of the article looks very interesting . The change from the IRF to Fairchild devices is this because they sound better, or is something else changed ?
Also I look forward to adding the P3 to my current F5 to see what difference it makes to the sound.
Thanks Nelson for this I look forward to the building process and listening. I will start with the V2 , but the V3 and beyond looks like it will keep me occupied for many months to come.
Geof
Just finished a fast read of the article looks very interesting . The change from the IRF to Fairchild devices is this because they sound better, or is something else changed ?
Also I look forward to adding the P3 to my current F5 to see what difference it makes to the sound.
Thanks Nelson for this I look forward to the building process and listening. I will start with the V2 , but the V3 and beyond looks like it will keep me occupied for many months to come.
Geof
Just one question Nelson,
The original F5 i've built has a sound profile (signature ) that gets visitors to my humble abode drooling...
I remember you saying that if you raise the power you also loose the magic...
My question is; does the character of the amplifier change with this much gain in power ?
I know i'm just being impatient...i need to build one.😎
,The original F5 i've built has a sound profile (signature ) that gets visitors to my humble abode drooling...
I remember you saying that if you raise the power you also loose the magic...
My question is; does the character of the amplifier change with this much gain in power ?
I know i'm just being impatient...i need to build one.😎
Cee
Pa explained that in article - up to 3 output pairs , everything is pretty the same
after that ( with more outputs ) just double inputs
doubling inputs will not have any negative effect , especially when using cascodes on them (because of No Herr Mueller)
Pa explained that in article - up to 3 output pairs , everything is pretty the same
after that ( with more outputs ) just double inputs
doubling inputs will not have any negative effect , especially when using cascodes on them (because of No Herr Mueller)
...thanks for prompt reply ever present mighty ZM....i read the article diagonally ...can´t wait to hear this one singing.
😎
😎
F-5 Turbo: It's not an amp, its a book!
I predict a run on the F-5c boards in the store!
I predict a run on the F-5c boards in the store!
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Bah. Only one supplier 'round here has the P-channel, no one has the N-channel devices 🙁
Any consequences using the 240/9240 instead?
BTW: What a read! Like, the latest thriller novel just released, except you need to build one to see how it ends!
Any consequences using the 240/9240 instead?
BTW: What a read! Like, the latest thriller novel just released, except you need to build one to see how it ends!
I can't tell that entire article is revelation to me ( from several reasons ) , but I can tell that devil is in diode detail ......
so - I'm Happy ZM Camper
😉
Mr. Pass thanks again for sharing your skills and knowledge with the world. I hope to one day share my own expertise with the world in the same way. I just have to build my career first, so I can afford to share a bit more.
I think it's great that you created a paper for all the guys on here who love the F5 but would like more power. Personally, I am using my stock F5 on my 2ohm 96db/watt/meter speakers and love it. I don't need more power but it is nice to see that you listen to what the community wants, even if it is different then the original goal of the amp.
I can't wait to see the size of the v3 amps that I am sure the guys on this site will build.
I think it's great that you created a paper for all the guys on here who love the F5 but would like more power. Personally, I am using my stock F5 on my 2ohm 96db/watt/meter speakers and love it. I don't need more power but it is nice to see that you listen to what the community wants, even if it is different then the original goal of the amp.
I can't wait to see the size of the v3 amps that I am sure the guys on this site will build.
..'course you would have discussed it with Papa in your stay overthere...
No source resistors make me think of those lovely and expensive Japanese amps....🙂
believe me , we didn't ; I'm always trying to have some life outside electronic
, so I bugged Pa with some other things and - when electronic was in question , I had some different questions ; ( did I understood answers or not , that's another issue 
)yup - lovely and expensive ; many of them are just that 😀
The shift to the Fairchilds was to get lower distortion numbers. The IR
parts will work, but the 9240 has more distortion, which has never stopped
me from using it.
😎
I'm sure this has been covered in this gigantic thread before, but how do you calculate the power in class A?
For example, in F5T V1, with +-32V rails, and 1.0 amp per device, with two pairs per channel, giving a bias of 4 amps per channel.
P = I^2 x R = 4^2 x 8 = 128W peak.
From the original F5 manual, average would be 64W and this would be the power in class A. Correct?
For example, in F5T V1, with +-32V rails, and 1.0 amp per device, with two pairs per channel, giving a bias of 4 amps per channel.
P = I^2 x R = 4^2 x 8 = 128W peak.
From the original F5 manual, average would be 64W and this would be the power in class A. Correct?
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