after alex_dubinsky discovered that using a 945 in Q11 instead of a 536 added a bit more metalic resonance i figured i would do some tests with the 945's that i have here to see what the difference was, must say i was plesantly suprised.
the test files are here
theres both 16bit and 24bit version for those of you who prefer higher qualityhttp://www.bahnhof.se/wb447909/phono/x0 ... -16bit.ziphttp://www.bahnhof.se/wb447909/phono/x0 ... -24bit.zip
i recorded some takes with different betas and cut and pasted them together to make life easier to compare them, each wave has the same knob positions for all betas and the format of them is like so,
first you hear everything stuck together which is
2 loops of a pattern with a 536 (sorry i couldnt get my meter to read its beta since i clipped it out and the legs were too short to work in my meter)
2 loops of a 945 with a beta of 300
2 loops of a 945 with a beta of 287
2 loops of a 945 with a beta of 275
a small pause and then after this i do side by sides
536 vs 945 with a beta of 300 (2 loops of 536 then 2 loops of 945)
536 vs 945 with a beta of 287 (2 loops of 536 then 2 loops of 945)
536 vs 945 with a beta of 275 (2 loops of 536 then 2 loops of 945)
i did quite a few takes but i whittled it down to 3 waves since the difference is sometimes subtle, its very noticable when env/decay is up high, in my ears teh 945 sounds much better than the 536 in this position as alex stated. I'm leaning towards the lower beta (275) 945 but ive not totally decided yet. Lower beta 945s definately sound a little more squelchy in this machine. I should point out that the box im using to test has high gain 733AP in Q8,Q9,Q10 and 733P elsewhere so this may be coming in to play also.
All in all its quite satisfying to use a 945 at this position, well done Alex for discovering it. As most of you probably know the 954's were rumored to be in the later builds of the real 303's how true this is i don't know, but it might well accoutn for some tb's sounding better than others.
The 945's im using are silver faced (nec possbly?) and marked C945P W58
anyway give the wav's a listen and let us know what you think.
Alex's original thread is hereviewtopic.php?f=12&t=11245