Re: MIDI interface for old PowerBook?

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Thanks for the heads up. I=E2=80=99ve only been using my no-name =
interface to transfer patches, so far without problems. But I=E2=80=99ll =
keep your info in mind.


> On Dec 20, 2019, at 8:51 AM, [email protected] wrote:
>=20
> A couple of things to be aware of:  The DX7 and other synths from that =
era predate the current MIDI spec and really want to have a 5V signal on =
the line.  The MOTU Fastlane (which I have) does this and has always =
been reliable in my setup, even in the days before OS X.  However, I =
recently bought one of those 4x4 no-name interfaces, and it only =
delivers 3.3V on the data lines.  The result is that it does not =
reliably send data to my DX7; note triggers work but SYSEX data usually =
fails.  The MOTU works without a hitch.
>=20
> The other thing is that many librarian apps (like Sysex Librarian) =
while able to work with class compliant devices, do not work with Core =
MIDI.  They have their own interface code and if you are using Audio =
MIDI Setup to configure your system, these apps will ignore those =
settings and possibly cause a conflict with other MIDI apps.  You will =
also not be able to route their data using AM Setup. =20
>=20
> I just went through all of this within the last week, and it was a lot =
of effort to troubleshoot because the symptoms were hard to observe =
repeatably.


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