From Brian Willoughby Sent Wed, Feb 14th 2018, 08:28
From Brian Willoughby Sent Wed, Feb 14th 2018, 08:28
I guess that explains it, then. If it can=E2=80=99t produce as high a CV = as the TB303, then it can=E2=80=99t sequence the same high notes. I=E2=80=99ll be curious to see whether you find that 5 V is the limit. = This sort of thing is the reason why I=E2=80=99ve passed over many = MIDI-to-CV products that were limited to 5 V. Sure, not every VCO has = more than 5 octaves of range, but those that do deserve to flex their = muscles. My new question is why the software emulations had the same limit. Maybe = there=E2=80=99s a completely separate reason and it=E2=80=99s just a = coincidence. Next time I have a minute, I hope to look over the TB303 schematics to = see how they handle CV generation from the sequencer. Brian On Feb 14, 2018, at 12:14 AM, skkatter <xxxxxxxx@xxxxx.xxx> wrote: > Heya Brian, >=20 > Yes the Avalon does have CV and gate output from its internal > sequencer. I plugged it into one of the SEMs I happened to have lying > around and its CV out also can't output the highest note. I'll be able > to check the actual voltage coming out of it with a multimeter this > evening after work, mine is currently hidden in a box somewhere under > five hundred other boxes as I just moved house. :/ >=20 > -Stephen >=20 > On 14 February 2018 at 01:15, Brian Willoughby = <xxxxxx@xxxxxxxxxxxx.xxx> wrote: >> Does the Avalon have CV output from its internal sequencer? >>=20 >> If so, measure the CV output to see if it matches the TB303 output or = if the Avalon CV generator is limited. You could either use a Volt meter = or just plug it into a known, good VCO (other than the Avalon, which is = clearly suspect). >>=20 >> My untested hunch is that the Avalon VCO is totally analog and can = handle the high CV and reproduce the pitch, but the internal CV = generation can=E2=80=99t actually recreate the same voltages that the = TB303 is generating. Not sure why unless it=E2=80=99s going above 5 V, = which is a typical limit for a DAC without calibrated gain. A VCO = wouldn=E2=80=99t necessarily have a 5 V limit on its 1V/oct CV input, = especially not if it=E2=80=99s running on +/-10 V or higher rails. >>=20 >> Brian >>=20 >> On Feb 13, 2018, at 1:33 PM, skkatter <xxxxxxxx@xxxxx.xxx> wrote: >>> TB303 and TT303 can play the highest C transposed up fine with their >>> internal sequencers, Avalon cannot, however Avalon *can* play the = note >>> when you bypass it's internal sequencer and play it via CV/Gate from >>> the TB303. Can anybody else re-create this behaviour? I recorded a >>> little video to demonstrate: >>>=20 >>> https://youtu.be/0Gbm-U1PZ7A >>>=20 >>> -Stephen >>>=20 >>> On 13 February 2018 at 21:31, DJ Maytag <xxxxxxxx@xxxxxxxx.xxx> = wrote: >>>> Even some software emulations had that limit, and it would = transpose an >>>> attempt at transposing E3 to E4 into C4 (its upper limit) instead. >>>>=20 >>>> On Tue, Feb 13, 2018 at 3:06 PM Computer Controlled = <xxxxxxx@xxxxx.xxx> wrote: >>>>>=20 >>>>> Your past the limits of what it will play. I believe it=E2=80=99s = a 3 octave >>>>> limit. >>>>>=20 >>>>> On Tue, Feb 13, 2018 at 10:12 AM, skkatter <xxxxxxxx@xxxxx.xxx> = wrote: >>>>>> Avalon users! Sorry for the spam, have a quick technical = question. >>>>>>=20 >>>>>> On my Avalon if I program a pattern with the upper C, and have = that >>>>>> upper C up one octave (or lower C up two octaves) it plays fine. >>>>>> However, if I then transpose that pattern up, the upper C cuts = out, >>>>>> all the other notes will play fine however. >>>>>>=20 >>>>>> Is this normal Avalon Bassline behaviour? Because it isn't normal >>>>>> TB303 behaviour. >>>>>>=20 >>>>>> Thanks, >>>>>> Stephen 303 problems today.