P3 Adjustment for the average Hobbyist

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#123
I tried with a test cd (some old technics one I have with no idea what the tones actually are) tonight as the source, though I could only find 400hz tones on it. If I changed ARTA's generator to 400Hz (but turned it off) then it gave me proper distortion figures. When the generator was set to 1Khz (and turned off) it told me the THD was 100% 😉

So yeah an external source should work but make sure the generator in ARTA is set to the same frequency as the generator 🙂

Tony.
 
#125
wintermute said:
Yes the 2i2 is a proper sound card which is connected via USB. But performs the same basic functions as a PCI or pcie sound card. The main advantage of going with USB is that it is portable and can be used with a laptop.

There are some things I prefer about using a pci card (I find the gain knobs on the 2i2 really finicky to adjust), but the portability and being able to use a laptop running off battery are the main reasons I went with a 2i2.

edit: the main advantage of using a laptop (apart from portability) is that you can completely eliminate the PC as a source of ground loops.

Tony.
Click to expand...

Am I correct in assuming that if I use 212 there is no reason to worry about sound card specs/quality that is in laptop?
Thanks,

Russellc
 
#129
Zen Mod said:
nope

EMU 1212 is way too complicated (12 channels out , same in)

any smaller EMU , less channels .... that's better

if one is happy having only SE in/outs , choice is much easier - buy any 2hand Audigy , for instance ....... and you're good
Click to expand...

Second hand audibly are cheap, tempting, but many here are using focusrite, probably should bite bullet on one of them...path being cleared here.

Russellc
 
#132
Great thread. I've been wondering about adjusting P3 on my F-5 and BA3 (used as a preamp). It seems to me that I should be able to use my newly acquired QuantAsylum QA401. It has a THD option. Should that make it easy to adjust P3? If I understand correctly, I'm not aiming for the lowest THD but rather for either desired 2nd or 3rd harmonics - correct?
 
#138
So I bought a Focusrite 2i2 2nd gen and have started experimenting a bit.

Loopback seemed good similar to what Wintermute posted earlier.

When testing a preamp or a poweramp NP says measure at 1 watt output. Do I need a load and of what R across preamp output? Same question for poweramp.

Thanks.
nash
 
#140
nashbap said:
So I bought a Focusrite 2i2 2nd gen and have started experimenting a bit.

Loopback seemed good similar to what Wintermute posted earlier.

When testing a preamp or a poweramp NP says measure at 1 watt output. Do I need a load and of what R across preamp output? Same question for poweramp.

Thanks.
nash
Click to expand...

Nice I am a little behind. I spent my current play money on one of zenmod's M25 kits, so I am a week or two out from getting my 212. I guess I could put it on a card and pay off in week or two.....

Russellc
 
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