The square wave and how Q8-10 + Q28 affects it

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sash
 
Posts: 61
Joined: Fri Mar 10, 2006 8:25 pm

Re:

Post by sash »

Sokkan wrote:
The second tests I did was with full resonance because phono asked for them:

http://www.bahnhof.se/wb447909/phono/x0 ... xTest2.zip
Your square wave sounds so nice with J201 :P

Can you tell exactly which J201 do you use ? 2SJ201 / J201-D27Z / J201-D74Z ???

I have the 2SK30A0. Is it the original component of the TB-303 ? Better than J201 ?

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altitude
 
Posts: 995
Joined: Wed May 11, 2005 5:17 pm

Re: The square wave and how Q8-10 + Q28 affects it

Post by altitude »

J201 is still produced and actually replaces the original part in the TM3030 clone. I have some left over from my 3030 build, maybe I should try them..

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donfuego
 
Posts: 41
Joined: Fri May 27, 2011 11:51 am

Re: The square wave and how Q8-10 + Q28 affects it

Post by donfuego »

Are these sound files still hosted somewhere? The links don't work anymore.
Would like to hear the differences as well...

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antto
 
Posts: 1636
Joined: Thu Apr 15, 2010 3:21 pm

Re: The square wave and how Q8-10 + Q28 affects it

Post by antto »

meanwhile maybe also check this - 9 different transistors for Q8, same pattern, here's a quick mp3 version of the results: http://www.box.net/shared/06funkl2ubytt83ut3ba

Sokkan
 
Posts: 240
Joined: Sat Sep 01, 2007 12:56 pm

Re: The square wave and how Q8-10 + Q28 affects it

Post by Sokkan »

I found the old files, I'll just upload the resonance files directly here until I have time to put them somewhere else:
(Admin: If this is totally bad, just remove them.)
HighORes1.wav.zip
(788.29 KiB) Downloaded 230 times
HighJ201Res1.wav.zip
(783.63 KiB) Downloaded 242 times
HighGRRes1.wav.zip
(797.02 KiB) Downloaded 238 times
Ah, maximum three attachments per post...

Sokkan
 
Posts: 240
Joined: Sat Sep 01, 2007 12:56 pm

Re: The square wave and how Q8-10 + Q28 affects it

Post by Sokkan »

... three more:
HighYRes1.wav.zip
(795.48 KiB) Downloaded 235 times
LowORes1.wav.zip
(798.91 KiB) Downloaded 255 times
LowJ201Res1.wav.zip
(809.71 KiB) Downloaded 247 times

Sokkan
 
Posts: 240
Joined: Sat Sep 01, 2007 12:56 pm

Re: The square wave and how Q8-10 + Q28 affects it

Post by Sokkan »

... and the last two:
LowGRRes1.wav.zip
(793.51 KiB) Downloaded 235 times
LowYRes1.wav.zip
(807.12 KiB) Downloaded 223 times
Just unzip, drag into your DAW, loop and solo one at a time.

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donfuego
 
Posts: 41
Joined: Fri May 27, 2011 11:51 am

Re: The square wave and how Q8-10 + Q28 affects it

Post by donfuego »

This is very interesting! I can't hear any difference between J201 and the -O. The -Y and -GR just sound horrible!

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