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Old 21st October 2009, 03:58 AM   #1441
Salas is offline Salas  Greece
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And you are going to spread 3 to 5 detuned subs? Your mains in the pic are full open?
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Old 21st October 2009, 03:59 AM   #1442
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Quote:
Originally Posted by HiFiNutNut View Post
Ikoflexer,
The Farnell parts from the U.S. have just arrived. So as soon as the 2sk170 from HongKong arrives I can spend a day to build v2.
Can I apply the same to v2? I mean adding some resistance between g and s of the Vref NJFECT, and use a film cap there.
I've tested something like this.
Click the image to open in full size.
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Old 21st October 2009, 04:03 AM   #1443
Salas is offline Salas  Greece
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This one should be technically superior hands down. Interesting to know how it will be perceived for tone. HiFiNutNut is doing much interesting evaluation work in a really big system. Fortunate that is.
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Old 21st October 2009, 04:10 AM   #1444
iko is offline iko  Canada
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Originally Posted by Salas View Post
This one should be technically superior hands down. Interesting to know how it will be perceived for tone. HiFiNutNut is doing much interesting evaluation work in a really big system. Fortunate that is.
Who knows, so many times all those performance numbers mean nothing and the sound is bad. HiFiNutNut may tell us soon. Luckily, we have established v1 and v1.1 to go back to!
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Old 21st October 2009, 04:12 AM   #1445
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Thanks Ikoflexer and Salas.

I have just finished work and am heading home now (no work assignments now thanks to the economic crisis so I do anything I want just stay in the office for 7-8 hours). It has been nice chatting with you guys today. Will chat tonight or tomorrow.

Regards,
Bill
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Old 21st October 2009, 04:14 AM   #1446
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Just before I go, Iko, could you please simulate with that bypass capacitor 1uF instead of 220uF? You don't need such a big cap for 80k.
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Old 21st October 2009, 04:16 AM   #1447
iko is offline iko  Canada
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Yeah, you have a nice evening. Time for me to turn in too, it's getting late.
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Old 21st October 2009, 04:16 AM   #1448
Salas is offline Salas  Greece
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Everytime the performance is better by 6dB in audio, in any aspect, I can feel the signal coming better to the fore. I tend to think that it is not about bettering the actually non perceivable thresholds under a more than enough point, but the real meaning is that overal linearilty is bettered. So for all things equal I expect V2 to rightfully shine in a very demanding system. Interesting procedure non the less.
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Old 21st October 2009, 04:19 AM   #1449
Salas is offline Salas  Greece
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Goodnight guys.
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File Type: jpg waltons.jpg (94.1 KB, 437 views)
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Old 21st October 2009, 04:19 AM   #1450
iko is offline iko  Canada
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Quote:
Originally Posted by HiFiNutNut View Post
Just before I go, Iko, could you please simulate with that bypass capacitor 1uF instead of 220uF? You don't need such a big cap for 80k.
As I said before, the values of all passive parts are yours to tweak.

I've simulated a small cap there, and also tested (measured) the noise. About this cap, I think you should trust your ears more.
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